Two new related oodine genera in the Oriental Region , with remarks on the systematic position of the genera Hololeius and Holosoma ( Coleoptera , Carabidae )

Two new genera of Oodini LaFerté-Sénectére, 1851 are described: Bamaroodes gen. n. (type species: Hololeius cyaneus Facchini, 2011) for Bamaroodes cyaneus (Facchini, 2011), comb. n., here placed in tribe Oodini and removed from Chlaeniini Brullé, 1834; and Thaioodes gen. n. (type species: Thaioodes piceus sp. n.) for Thaioodes piceus sp. n. (type locality: Khon Kaen, Thailand). The new genera are closely related and belong to the same lineage as evidenced by the following combination of characters: body shape semi-elongate; discal setiferous pore lacking in interval 3 of elytra; mesocoxa without lateral seta; tarsomere 5 setose ventrally; joints of the claws of tarsomere 5 parallel, situated closely to each other. The two genera are readily distinguished from one another by a number of distinct characters. Further, the tribal position of two other genera is reconsidered. The monospecific Hololeius LaFerté-Sénectére, 1851 is redescribed and its current placement within Chlaeniini is confirmed, though it might be distantly related to the two new genera. Analysis of character states in species of Holosoma Semenov, 1889 leads me to transfer the genus from Oodini to Chlaeniini. Pictures of the taxa dealt with here are provided, including habitus, external characters, and genitalia. In addition, all the genera of the Oodini from the Oriental Region, including genera of Oriental Chlaeniini with oodine facies, are keyed for the first time.


Introduction
The Oriental fauna of Oodini has not been examined by taxonomists for a long time.Its representatives were reviewed by LaFerté-Sénectére in 1851, who assigned six Indian and one Javanese species to Oodes Bonelli, 1810.Today the same species are arranged in six different genera of the tribe (Lorenz 2005).A second work of importance regarding the discussed fauna is the posthumous revision of Chaudoir (1882Chaudoir ( , 1883) ) that, even though old and out of date, is still the only worldwide review of the tribe.Subsequently other works appeared on this topic, among the more important being those of Bates (1892), Andrewes (1923Andrewes ( , 1940)), and Louwerens (1951).The only study entirely devoted to the Oriental Oodini is that of This work is useful for the making of a modern classification of the group in any other region.
Currently 44 oodine species from the Oriental Region are classified in 11 genera (Holosoma Semenov excluded).I add two more genera and two more species that will be discussed in detail in this work (Table 1).Undoubtedly, the status of some taxa needs verification, so this study should be considered a preliminary attempt to contribute to a better recognition of the taxa of Oodini in the region.
The main reason for doing this work is the finding of two unusual oodine-like specimens in MNHUB from Thailand, one of them found to be conspecific with Hololeius cyaneus Facchini, 2011.The samples had been collected with light traps by Dr Sastri Saowakontha and donated to MNHUB by Prof. Dr Hans-Jürgen Bremer, a specialist on Tenebrionidae.A careful study of the two specimens has revealed that each of them belongs to a separate genus, and that H. cyaneus is not congeneric with H. ceylanicus (Nietner, 1856), the type species of the genus.In addition, the study of specimens of Holosoma and a review of published descriptions revealed that this genus is does not belong to the Oodini, and should be transferred to Chlaeniini.
The measurements and drawings of the dorsal view of the aedeagus were made using an Olympus SZ 60 stereoscopic microscope.The rest of the drawings were taken with a Carl Zeiss Jena Technival 2 stereoscopic microscope.The photographs were made with a Zeiss Stemi 2000 microscope equipped an AxioCam ERc 5s camera.
The measurements are made as previously described by the author (Guéorguiev 2013).
Abbreviations of the repositories of the specimens herein studied are: The distribution map was made using the online mapping software SimpleMappr (©David P. Shorthouse).Diagnosis.Small to medium-sized specimens (11-13 mm) for Oriental chlaeniines, with the following characters: habitus semi-elongate; color mostly olivaceous; integument punctate and pubescent, pubescence denser on sides of elytra and on sides of abdomen, less developed, scattered or lacking on rest of body; head with conspicuously large eyes and minute tempora; penultimate segment of labial palpomere without setae; antennomeres 1-3 lighter than other antennomeres, scape and pedicel glabrous, antennomere 3 with a few fine and scattered setae; pronotum subquadrate, without protruded angles, with basal margin laterally oblique towards posterior angle; elytra more densely pubescent and punctate laterally and apically, with only a few hairs basally and on disc; striae 1-7 of elytra punctiform; striae 5-7 obliterated anteriorly; stria 8 linear, somewhat more impressed than other striae; mesocoxa with two long setae, one lateral seta and one posteromedial seta; sterna 4-5 with pair of long ambulatory setae, sternum 3 without such setae; last abdominal sternum with two pores in male, four pores in female; male protarsomeres 1-3 longer than wide and with protarsomere 1 longer than each of following two protarsomeres separately; tarsomere 5 of all legs setose ventrally.
Taxonomic position.LaFerté-Sénectére (1851: 274) proposed Hololeius for Chlaenius nitidulus Dejean, 1826, due to: 1, pronotum at the base narrower than the base of elytra; 2, lack of pubescence; 3, antennomere 3 not longer than subsequent antennomeres.He placed the genus in tribe Oodini LaFerté-Sénectére, 1851, concluding: "C'est-à-dire qu'à l'exception de la largeur du corselet, cet insecte réunit tout les charactèrs à l'aide desquels nous avons séparé les Oodites des Chlaoenides.".In terms of the present knowledge, I can state that the first and third characters are true, but not the second one.When examined it was found that H. ceylanicus has the integument partially and diffusely punctate and pubescent, both dorsally and ventrally.This state is opposed to one of the basic features of the Oodini, namely the lack of pubescence and lack of extensive punctation of the integument (Bousquet 1996: 448).Hence, the three characters LaFerté-Sénectére mentioned are typical of Chlaeniini.The length and ratio of antennomere 3 to the following antennomeres is not of tribal significance.
Hololeius is usually placed in the beginning of the genera of Chlaeniini (Lorenz 1998(Lorenz , 2005)), presumably because of some odd features that it possesses.Actually, the genus combines characters distinctive for either one or the other tribe and the importance of each is discussed below (see 'Affinities' under Bamaroodes gen.n., 'Discussion').Diagnosis.Same as the generic diagnosis.Redescription.Habitus.Semi-elongate (Fig. 1).Color.Uniformly olive-green on most of dorsal surface, elytra light green to coppery at apex; venter black; elytral epipleura reddish; palpi, legs, antennomeres 1-3 and base of 4 red-yellow.Microsculpture.Reduced on most of surface, isodiametric on interval 9 and on medial intervals posteriorly, transverse on proepisternum.Punctation and pubescence.Head finely and densely punctate dorsally, slightly rugose at sides and posteriorly; pronotum and elytra with punctures coarser and more scattered than punctures on head; pronotum more densely punctate laterally and basally, less densely punctate apically, with a few hairs on disc; elytra more densely pubescent and punctate laterally and apically, with only a few hairs basally and on disc; prosternum, mesepisternum, metasternum, and metepisternum glabrous medially, sparsely to moderately punctate and pubescent laterally; abdominal sterna 1-2 sparsely punctate and pubescent, sterna 3-6 sparsely punctate and pubescent medially, more densely punctate and pubescent laterally.
Distribution.Palaearctic Region (Japan, East China), Oriental Region (Ceylon, India, South China, Taiwan, Philippines, Malaysia, Indonesia), Australian Region (New Guinea, northeast and southeast Australia).Type species.Holosoma opacum Semenov, 1889 Historical remarks.Semenov (1889: 388) proposed the generic name Holosoma for H. opacum from South Gansu, China.The author placed the genus in "subtribum Oodidarum, prope genera Oodes Bon.et Simous Chaud, collocandum" (ibid.: 389).This tribal placement has been subsequently accepted (Jakobson 1906: 310-311).In 1923, Heller (1923: 66) described the genus Parahololius Heller, 1923, for P. weigoldi Heller, 1923, from Sichuan, China.He placed this genus in Chlaeniini, near to Hololeius.Shortly afterwards, Semenov (1927: 232) proposed [not Basilewsky 1953, as Kirschenhofer 1995: 77 stated] the synonymy of Parahololius and Holosoma and emended the former name to Parololius [according to the Article 32.2.3 of ICZN 1999, the change of the original name to Parololius is an "unjustified emendation].Jedlička (1931: 21-22) described H. rambouseki Jedlička, 1931from Sichuan, China. Andrewes (1935) described Chlaenius hedini Andrewes, 1935, from North Gansu and Southeast Sichuan, China.He noted, "It does not appear to be nearly allied to any other Asiatic species."[of Chlaenius Bonelli, 1810].Jedlička (1936: 51) described Holosoma boettcheri Jedlička, 1936, from the Philippines, which is the only known extra-Palaearctic record for the genus.Subsequent authors dealing with the genus, except for Lorenz (2005), have omitted this species.I have seen the holotype of Holosoma boettcheri in BMNH and found that it belongs to a different group of Oodini.Later, Basilewsky (1953: 153) included Holosoma to the tribe Simoini Basilewsky, 1953, of subfamily Oodinae (sensu Jeannel, 1949a).Kirschenhofer (1995) reviewed the known species (excl.Chlaenius hedini and H. boettcheri), adding three more species and retaining the tribal affiliation of the genus.Later, he synonymized one of his added taxa with H. hedini (Kirschenhofer 1998).Recently, Ito (2003Ito ( , 2012) ) added five more species and one subspecies to the genus and keyed all species known at that time.He retained the position of the genus within the Oodini.Taxonomic position.The discussion here is based on all the generic and species descriptions (Semenov 1889, Heller 1923, Jedlička 1931, Andrewes 1935, Kirschenhofer 1995, Ito 2003, 2012) and on the detailed examination of two specimens.It considers only the characters that are significant for the tribal position of Holosoma.Excluding H. boettcheri, I am aware that the group is homogeneous and the main structural features are uniform among the species.

Holosoma
1) Pronotum posterior margin as wide as basal margin of elytra, thus habitus seems semi-oval rather than elongate.Atypical of Chlaeniini (but occurs in a few species, such as the Nearctic Chlaenius tomentosus (Say, 1823); remark by R. Davidson).Typical of Oodini, except for the new genera.This condition is probably a derived trend within the genus because it occurs in most, but not all, species.2) Body dorsally with metallic lustre (greenish, turquoise, bluish, violet to black-blue) on dorsal surface.Habitual to Chlaeniini, since many species from this tribe are metallic colored.In the Oodini, a metallic hue is present only in Bamaroodes gen.n., most species of Simous and a few taxa of Stenocrepis Chaudoir, 1857.

3) Integument sparsely pubescent dorsally and ventral-
ly.The character is distinctive of Chlaeniini, but it is unknown in the Oodini.In the species of Holosoma, the dorsal surface of the head, antennomere 3 (excl.apical setae), pronotum, intervals 8-9 of elytra, prosternum, mesepisternum, mesocoxa, mesofemur, metasternum, metepisternum, and abdomen all have rather fine and scattered punctures (see also Kirschenhofer 1995, Ito 2003).Most of the punctures are provided with short, yellowish hairs, usually well visible under higher magnification.Sparse pubescence is also present on the medial elytral intervals posteriorly, though it is much more sporadic than on the intervals 8-9.4) Labrum with six setae along anterior margin.This feature is typical of Chlaeniini.Although it is present in most Oodini, several groups have different setation of the labrum.5) Clypeus with a pair of setae.The condition is usual for Chlaeniini.Although it occurs in most Oodini, several groups lack clypeal setae.6) Penultimate labial palpomere with 2-4 spines at front margin.Indicative of Chlaeniini (occurs in the most of the species).This feature is unknown in the Oodini.Jedlička (1931: 22) has noted that the penultimate labial palpomere in H. rambouseki lack setae, but this fact needs verification.7) Terminal labial palpomere with a few fine and short setae on lateral margin (see also Ito 2012: 303).Occurs in some Chlaeniini.Unknown in the Oodini.8) Elytral stria 8 shallower than, or as deep as striae 1-7.Typical of Chlaeniini, except for Hololeius.All taxa of Oodini I have studied have stria 8 more or less grooved along its extent and deeper than other striae.9) Discal setiferous punctures situated in elytral intervals 3 and 5, or in intervals 3, 5 and 7.There is no data for this condition in Chlaeniini, but it is also atypical of Oodini.Like point 1, it can be an apotypic trend within the genus since it occurs in several, but not in all species of Holosoma.For example, H. hedini, H. heros Kirschenhofer, 1995, and  of Chlaeniini.Unusual for Oodini, except for Bamaroodes gen.n. 12) Tarsomere 5 of all legs setose ventrally.Typical of Chlaeniini.Unusual for Oodini, except for the two new genera and a few species of Systolocranius.Among the species of Holosoma, the number of the setae varies from two to six on each side of tarsomere 5. 13) Quinone-like smell defensive secretion.This is one of three groups of compounds used for defence in the Chlaeniini.It is not found in Oodini.Ito (2003: 95) noted that the defensive chemical in Holosoma is "also the same as that of the genus Chlaenius".I noticed this pungent smell many times when was taking the specimens from Wenxian out of the test-tube and handling them.The odor is identical or similar to that existing in the European species of Chlaeniellus Reitter, 1908 (Bousquet 1987).Moore (1979: 198-199) regarded the quinones as one of the most elaborate defensive strategies in the ground beetles.
Thirteen character states are considered.Number 9 is not counted due to deficient data about its presence among other taxa.Six character states, i.e., 2, 3, 6, 7, 8, 13, are typical for Chlaeniini and are unknown to Oodini.Characters 10, 11 and 12 are also typical of the Chlaeniini and have a few exceptions in the Oodini.Similarly, characters 4 and 5 are always indicative of Chlaeniini.Most genera and species of Oodini also share these two conditions, but there are some important exceptions.Character 1 is the only one characteristic of Oodini and not typical of Chlaeniini.
In conclusion, Holosoma lacks oodine characters but does share important traits with the chlaeniines.It is therefore removed to a new tribal placement incertae sedis within Chlaeniini.The precise affinity of the genus within the tribe remains unresolved.
Holosoma sp.Notes.The specimens seem closer to taxa from south Gansu with pores in intervals 3, 5 and 7 (i.e., H. hedini and H. heros), but further work is needed to clarify their precise position.
Etymology.A compound word, based on the ethnic name of the people in the region where the type species was first found, Bamar, and Oodes (for its etymology see Bousquet 2012: 955).It is treated as a Latin masculine.
Affinities.In 2011, Facchini described eight new species of Chlaeniini from the Afrotropical and Oriental region, among them Hololeius cyaneus from Myanmar (Facchini 2011: 350-351).The author noted also that the holotype of the species has sympatrically been collected with specimens of H. ceylanicus, the type species of the genus.Facchini differentiated the latter from the former by: 1, size of the body; 2, coloration of the integument, including the color of femora and epipleura; 3, shape of the pronotum; 4, shape and striation of the elytra; 5, punctuation of the elytral intervals; 6, chaetotaxy of the last abdominal sternum in the females; 7, distance between the joints of the claws of tarsomere 5. Examination of the paratype and another specimen of H. cyaneus from Thailand confirms that these distinguishing features are valid (except for the color of epipleura, which is not markedly different) and well-chosen for ready differentiation of these taxa.However, they are inadequate to give an idea of a more precise systematic position of the species, though some of the differences noted by Facchini are of generic value.
Careful study ascertained significant structural differences between H. cyaneus and H. ceylanicus (Table 2).
Five of the listed character states (1, 2, 3, 9, and 11) are of tribal magnitude, though one of them (i.e., attribute 9) shows transitional conditions in the two species.All the states are characteristic of Oodini and atypical for Chlaeni-ini (Jeannel 1949a, Bousquet 1996).Point 11 exhibits a unique condition in H. cyaneus that is hitherto unknown in the two tribes.However, a complete character state transformation of this feature occurs in the Oodini.Except for Bamaroodes gen.n., all other examined oodines possess a ninth interval of elytra completely transformed into a marginal gutter throughout.In my view, this special feature may be morphological evidence for transition between the two tribes, but this needs further examination.The losses of the mesocoxa lateral seta (point 13) and parallel position of the joints of the tarsal claws (attribute 14) are conditions hitherto not found together in the aforementioned tribes.Among the Oodini, the three character states occur together only in H. cyaneus and Thaioodes gen.n. piceus sp.n.I believe that they have arisen as a consequence of a specific adaptation and survival strategy for an aquatic manner of living.The remaining character states (i.e., 4, 5, 6, 7, 8, 10, 12, 15, and 16) demonstrate marked differences of a grade higher than the grade usual for species from one and the same genus.I treat each of these nine differences as of generic significance.
In conclusion, there are quite a number of considerable morphological differences between Hololeius ceylanicus and H. cyaneus, which taken together are cause for the separation of the latter in a separate genus.That is why Bamaroodes gen.n. is proposed to accommodate this species.The new taxon does not share main tribal characters of chlaeniines but shows important similarities with oodines.Bamaroodes cyaneus is therefore removed to a new tribal placement within Oodini.The relationships of the new genus are discussed below (see 'Discussion').PW/PL 1.14-1.15(Fig. 1) 1.24-1.37(Fig. 13) 06 Basal margin of pronotum at posterior angles oblique (Fig. 1) gradually rounded (Fig. 13) 07 Pronotum bordered laterally and lateroapically, not bordered medioapically and basally (Fig. 1) bordered throughout (Fig. 13) 08 Elytral striae 1-8 1-7 punctate, 8 impunctate (Fig. 2) impunctate (Fig. 14 (Facchini, 2011) det.

B.Guéorguiev 2014" [printed, white] (MNHUB).
Diagnosis.Same as the generic diagnosis.Redescription (based on female sex).Habitus.Body semi-elongate, moderately convex (Fig. 13); tegument wholly glabrous (excl.antennomeres 4-11), smooth, only disc of head moderately punctate and wrinkled.Measurements (data for paratype in parentheses brackets).BL: 8.5 (8.2) mm; BW: 3.65 (3.6) mm.Ratios.PW/HW: 1.39 (1.5); PW/PL: 1.24 (1.37); PbW/PaW: 1.34 (1.31); EW/ PW: 1.59 (1.54); EL/EW: 1.38 (1.28).Color.Head and pronotum dark with strong bluish reflection, elytra mostly blackish with slight bluish color, with oblique yellow apical band (starting externally at apical fourth of elytron and directed obliquely to apical ninth of suture), mouthparts and femora dark reddish, tibia and tarsi red-yellow, palpi, antennomeres 1-3 and base of antennomere 4 yellowish, antennomeres 4-11 blackish.Microsculpture.Isodiametric on whole dorsal and most of ventral surface of body, transverse on prosternum medially and prosternal process, meso-and metacoxa, and metatrochanter.Lustre.Dorsal and ventral surfaces shiny.Head.Slightly narrower with respect to pronotum; disc moderately punctate and slightly wrinkled laterally, with a pair of supraorbital setae, frontal furrows indistinct; eyes fairly large, very prominent, with vertical diameter longer than length of antennomere 1, tempora minute; clypeus punctate, subtrapezoid, with distinct clypeal suture, anterior margin slightly concave and two pores remote from anterior margin at distance as long as two diameters of pores; labrum subrectangular, with straight anterior margin and six setae removed back from margin, four medial setae closer to each other than to lateral setae; mandibles moderately large, pointed and hooked at apex; maxillae not exceeding mandibles, maxillary palpi considerably longer than labial palpi, with glabrous and elongate palpomeres, terminal palpomere slightly fusiform, palpomere 2 longer than 4; labium not fused, with distinct suture between mentum and submentum, mentum emarginate, with two setae, distinct labial pits, anterior margin bordered, median tooth large, simple, widely rounded at tip, and short epilobes, exceeding mentum tooth anteriorly; submentum with four long setae, two basal and two lateral, distance between two basal setae at least three times longer than distance between basal and lateral seta, basal setae longer than lateral ones and as long as transverse length of mentum; ligula broadened apically, its anterior margin with two long ventral setae, paraglossae slightly exceeding ligula in front, labial palpi elongate, glabrous, terminal palpomere slightly fusiform, penultimate palpomere slightly shorther than terminal one; antennae filiform, with antennomeres 1-3 and base of 4 glabrous, stipes 1.1 times longer than antennomere 3, with dorsal seta distally, pedicel with one ventral seta, antennomere 3 with six apical setae.Pronotum.Semi-round to semi-rectangular, moderately transverse, wider than long, widest before middle, margins with fine border throughout; disc slightly convex, smooth, midline finely impressed, longer than half pronotal length, not reaching anterior and posterior margins; sides more rounded anteriorly than posteriorly, without lateral setae, with laterobasal setae; anterior margin slightly concave, shorter than posterior margin, anternior angles round, not prominent; posterior margin convex laterally and concave medially, posterior angles briefly rounded; basal impressions faint, sublinear, parallel.Elytra.Oval, widest at middle, with convex disc; basal margin complete, touching parascutellar striola; sides regularly rounded from middle towards base and apex; shoulder broadly rounded, without denticle; striae linear, impunctate, and moderately impressed for most of length, 1-7 becoming punctiform and obliterated in apical fifth to fourth; striae 5-7 obliterated basally; stria 8 deeper than other striae throughout (Figs 14-15); parascutellar striola distinct, long, situated between suture and stria 1; intervals wide, flat and smooth throughout; intervals 7 and 8 separate (not fused) apically (Figs 15-16); interval 9 transformed into marginal gutter at anterior two fifths of elytra, distinct on posterior three fifths (Figs 14-15); marginal gutter ended at preapical sinuation, before apex of elytron (Fig. 16); parascutellar pore present, inside stria 1, close to meeting point of striae 1 and 2, discal punctures in interval 3 lacking, stria 7 with two punctures before apex, umbilicate series with 15-16 pores.Hind wings.Well-developed.Ventral surface (thorax and abdomen).Sternal part of thorax and abdomen smooth and shiny; intercoxal process of prosternum unbordered, prosternal keel moderately protruding posteriorly; mesosternum concave; metepisternum longer than wide, slightly narrowed behind, laterally coadunate with elytral epipleuron, with medial margin longer than anterior one, lateral margin longer than both anterior and medial margins.Abdomen with pair of ambulatory setae on sterna 4-5, sternum 6 with pair of marginal pores, each pore removed proximally from apical margin a distance about twice as long as diameter of pore.Legs.Long and fairly slender; procoxa without seta, mesocoxa with single posterior seta, metacoxa with anterior pore; pro-and mesotrochanter with one distal seta, metatrochanter without seta; profemur anterior, ventral and posterior faces glabrous, dorsal face with three-four short setae in distal half; mesofemur anterior face with five short and thick setae, ventral and posterior faces glabrous, dorsal face with 16-18 short, thick setae arranged in two rows; metafemur glabrous or with single pore on dorsal surface; protarsomere 1 longer than 2 and 3 combined, meso-and metatarsomere 1 as long as 2 and 3 combined, tarsomere 5 of all legs with two-four pairs of fine setae ventrally.Male genitalia.Unknown.Female genitalia.Ovipositor consists of valvifer and stylomere ; distal margin of valvifer with some long setae; basal stylomere subconical, its ventral surface with 10-11 thin setae directed to apical stylomere, two medial setae rather short, others long (some of lateral setae longer than half length of apical stylomere); apical stylomere subelongate, nearly twice as narrow as basal stylomere, with 11 short, subtriangular, moderately chitinized ensiform setae (3 dorsomedial and 8 dorsolateral) and two thin nematiform setae, nearly twice as long as ensiform setae.
Etymology.A compound word, based on the ethnic name of the predominating people in the country where the type species was found, Thai, and Oodes (for the etymology of this name see Bousquet 2012: 955).It is treated as a Latin masculine.
Hind wings.Well-developed.Ventral surface (thorax and abdomen).Sternal part of thorax and abdomen smooth and shiny; intercoxal process of prosternum bordered, indistinctly at sides, distinctly posteriorly, prosternal keel moderately protruding posteriorly; mesosternum concave; metepisternum slightly longer than wide, narrowed behind, laterally coadunate with elytral epipleuron, with medial margin slightly longer than anterior one, lateral margin distinctly longer than anterior and medial margins.Abdomen with pair of minute pores on sterna 4-5, sternum 6 without apical setae.Legs.Long and fairly slender; procoxa without seta, mesocoxa with one posterior seta, metacoxa with anterior pore; pro-and mesotrochanter with one distal seta, metatrochanter without seta; profemur anterior, ventral and posterior faces glabrous, dorsal face with one-two, short, thick setae in distal half; mesofemur anterior face with five short and thick setae in one row, ventral and posterior faces glabrous, dorsal face with about 12 short, thick setae arranged in two rows, anterior row widely interrupted, consists of one proximal and two distal setae, posterior row continuous, consists of 9-10 setae; metafemur glabrous; protarsomeres 1-3 of male slightly dilated, nearly symmetrical, protarsomere 1 longer than wide, subtriangular, longer than following two protarsomeres, distal half with 16 (on left leg) and 17 (on right leg) small, round adhesive discs ventrally; protarsomere 2 as long as wide, subquadrate, wider, and as long as protarsomere 3, with 17 (on left leg) and 13 (on right leg) round adhesive discs ventrally; protarsomere 3, longer than wide, sub-rectangular, with 7 (on left leg) and 8 (on right leg) round adhesive discs ventrally; mesoand metatarsi with tarsomere 1 as long as or longer than tarsomeres 2 and 3 combined; tarsomere 5 of all legs with two pairs of setae ventrally.Male genitalia.Median lobe of aedeagus long, slender, curved laterally, with complex internal structure (Figs 23-24); basal part short, narrow, with small bulb and orifice deeply concave in lateral aspect, regularly bent towards massive and broadened medial part, dorsal margin convex to straight, ventral margin undulating, apical lamella goes down at tip;    (Facchini, 2011); red circle -Khon Kaen, type locality of Thaioodes gen.n. piceus sp.n. and second known locality of Bamaroodes gen.n. cyaneus (Facchini, 2011)).
median lobe long, straight, almost symmetrical in dorsal aspect, slightly widened distally, with apical orifice elliptic and lamella broadly rounded off; inner sac with two chitinized, differently shaped structures: proximal paddle-like sclerite and medial threadlike filament; parameres different in shape, right one elongate, thick, with dorsal margin contiguously widely elevated and broadly concave , left paramere conchoidal, with thick, strongly chitinized and oblique process internally .Female genitalia.Unknown.
Etymology.The specific epithet piceus is Latin, draws attention to the predominant glossy black color of this beetle.An adjective in the nominative singular.
Special traits shared by the two new genera imply that they form clade: 1) Body shape semi-elongate.This habitus is owing to pronotum anterior and posterior margin with similar widths and pronotum posterior margin narrower than basal margin of elytra.All other examined Oodini have elliptic or broadly oval (amariform) shape of body which is due to a subtrapezoidal pronotum having the anterior margin distinctly narrower than the posterior margin, as well pronotum posterior margin and basal margin of elytra of similar width.2) Discal punctures in interval 3 lacking.The majority of oodines from the Old World have two small discal setiferous punctures in the interval 3 of elytra.3) Mesocoxa lateral margin without seta.This state is not typical of any other Oodini that I know.The spe-cies from this tribe usually have one, long and thick seta, and rarely two such setae on the lateral margin of the mesocoxa.It is also not typical of Chlaeniini, which commonly possess two or more such setae.4) Tarsomere 5 of all tarsi setose ventrally.As far as I know, all representatives of Oodini (except for a few species of Systolocranius) have the last segment of the tarsi without setae.To the contrary, the species of Chlaeniini have tarsomere 5 always setose ventrally.5) Joints of the claws of tarsomere 5 parallel, situated closely to each other.As a rule, all epigeous carabid beetles have opposite joining of claws, situated distantly from one another.Such a position is certainly convenient to their movement on the ground.However, the convergence of the joints of the claws is a modification to a different way of moving, perhaps to aid movement in an aquatic environment.
To my knowledge, these character states do not occur together in other taxa of the Oodini.Characters 3 and 5 exhibit derived characteristics shared by the two new genera.This fact reveals that most probably the taxa form a clade.Additionally, attributes 1, 3, and 5 are not present in any other group of oodines.Characters 1, 2 and 4 are typical for many Chlaeniini, so that they are considered symplesiomorphies in Bamaroodes gen.n. and Thaioodes gen.n.But this assumption should be cleared up by future study.Attributes 1 and 4 are also clearly plesiotypic in the Carabidae Conchifera.The reduction of the elytral discal pores is a homoplasy that has occurred many times in different lineages.
All of the above facts make me believe that the lineage of these genera may be an adelphotaxon of the rest of the Oriental Oodini.

Table 1 .
List of the Oriental genera of Oodini, their species number and distribution.

Table 2 .
Diagnostic character state combinations shown by exemplars of Hololeius ceylanicus and H. cyaneus.