Trechepaphiopsis uniporosa Deuve and Liang, 2016

Deuve, Thierry, Kavanaugh, David H. & Liang, Hongbin, 2016, Inventory of the Carabid Beetle Fauna of the Gaoligong Mountains, Western Yunnan Province, China: Species of the Tribe Trechini (Coleoptera: Caraboidea), with Descriptions of Four New Genera, One New Subgenus and 19 New Species., Proceedings of the California Academy of Sciences 63 (12), pp. 341-455 : 413-415

Trechepaphiopsis uniporosa Deuve and Liang , sp. nov.

( Figs. 16f , 28 , 37a , 46–48 )

TYPE MATERIAL.— Holotype, a male, in IOZ, labeled: “CASENT 1001923”/ “ CHINA, Yunnan Province, Gaoligongshan Mountains, Nujiang Prefecture , 9 [actually 9.3] km ESE of Pianma, 25°59.6’N/ 98°37.6’E.”/ “2450 [actually 2460-2470] m, 15-18 October 1998, Stop #98-118D D.H. Kavanaugh , C.E. Griswold, C. Ferraris & C.-L. Long collectors”/ “IMAGE” [green label]/ “ HOLOTYPE Trechepaphiopsis uniporosa Deuve & Liang , sp. nov. designated 2016” [red label]. Paratypes (a total of 5): 3 males and 2 females (in CAS, IOZ, MNHN) labeled: same as holotype, except first label “CASENT 1001920” to “CASENT 1001922” and “CASENT 1001924” to “CASENT 1001925”, respectively. All paratypes also bear the following label: “ PARATYPE Trechepaphiopsis uniporosa Deuve & Liang , sp. nov. designated 2016” [yellow label] .

TYPE LOCALITY.— China, Yunnan, Gaoligong Shan, Lushui County, Pianma Township , 9.3 km ESE of Pianma, 25.99363°/ 98.66651°, 2460-2470 m .

DERIVATION OF SPECIES NAME.— The species epithet, uniporosa , is an adjective derived from the Latin words, unus, meaning one, and porus, meaning pore or hole. The name refers to the single discal setiferous pore found on the elytra of members of this species.

DIAGNOSIS.— Adults of this species ( Fig. 28a ) can be distinguished from those of all other species in the region by the following combination of character states: size medium (BL = 3.3 to 3.5 mm), apterous; body color light brown, slightly iridescent; eyes small; tempora distinctly convex, sparsely pubescent; pronotum transverse (ratio PW/PL = 1.34), with basal angles obtuse and rounded; elytra convex, with stria 1 deeply impressed and finely punctate, other striae more faintly impressed and lateral striae effaced; recurrent stria terminated anteriorly in presumed location of interval 6; only one discal setiferous pore present, inserted at anterior one-third next to stria 3; preapical seta present, inserted next to stria 3; median lobe of male aedeagus ( Fig. 28b ) with apex slender but bluntly rounded and slightly recurved dorsally, endophallus with a faintly sclerotized scaly area.

DESCRIPTION.— Size medium BL = 3.3 to 3.5 mm. Body color light brown, appendages concolorous, except palpi paler, dorsum shiny, slightly iridescent.

Head. Moderate in size, short; eyes small, not projected, their diameter about equal to length of tempora but their convexity less than that of tempora, the latter markedly convex, inflated and sparsely pubescent. Frontal furrows thin and linear, deeply impressed, arcuate, continuous posteriorly to hind margins of tempora. Two pairs of supraorbital setae present, the anterior pair inserted in foveae. Clypeus with four setae. Labrum with six setae, anterior margin distinctly concave or emarginate. Mandibles short and slender, right mandible as in Fig. 16f . Mentum and submentum not fused. Mentum with medial tooth apically truncate, about one-half the length of the lateral lobes. Submentum with six setae anteriorly. Antennae rather short, not quite extended posteriorly to basal one-fourth of the elytra, only 2.5 antennomeres extended posteriorly beyond basal pronotal margin; antennomeres 2 and 3 about equal in length, antennomere 4 slightly shorter .

Pronotum. Distinctly transverse (ratio PW/PL = 1.34), with greatest width near anterior one-third, only slightly narrowed posteriorly; lateral margins rounded, slightly more so anteriorly, slightly straighten just anterior to basal angles, the latter obtuse and rounded. Disc smooth and convex, median longitudinal impression finely impressed, but continuous between anterior and posterior margins; basal foveae shallow, faintly impressed; median basal area reduced, faintly delimit- ed, slightly punctate in some specimens. Basal margin nearly rectilinear. Lateral pronotal borders moderately slender, regular, narrowly and regularly reflexed, lateral grooves narrow but distinctly impressed. Single midlateral setae on each side inserted near anterior one-third; single basolateral seta on each side, inserted at basal angle.

Elytra. Ovoid, only slightly more narrowed anteriorly than posteriorly, humeri distinct but rounded. Disc convex, striae faintly impressed and finely punctate, the medial three or four striae distinctly impressed, the more lateral striae more or less effaced, but perceptible if only by the presence of fine punctures seen as rows of brown dots visible through the integument. Parascutellar striole present. Recurrent stria abruptly terminated anteriorly in presumed location of interval 6. Parascutellar setiferous pore present at base at common origin of discal striae 1 and 2. Only one discal setiferous pore present, inserted slightly anterior to middle next to stria 3. Preapical seta present on interval 3 near stria 3, closer to elytra apical margin that to sutural margin.

Legs. Short, protibiae with longitudinal furrow. Male protarsomeres 1 and 2 dilated and apicomedially toothed.

Abdomen. Abdominal ventrites glabrous, except for a single paramedial seta on each side, and ventrite VII of males apically with one pair of paramedial setae, of females with two pairs.

Male aedeagus. Median lobe ( Fig. 28b ) with sagittal aileron very small, shaft moderately broad basally, expanded near mid-length, then gradually narrowed apically to a thin, bluntly round- ed apex, the latter slightly recurved dorsally; endophallus with a small scaly sclerotized area ( Fig. 28c ).

HABITAT DISTRIBUTION.— Members of this species have been found in mixed broadleaf evergreen/ deciduous forest at elevations ranging from 2460 to 2470 m and collected by sifting leaf litter on the forest floor ( Fig. 37a ). Specimens of Trechepaphiosis unisetosa and Trechepaphiama gaoligong sp. nov were collected in the same sifted leaf litter samples and are therefore syntopic with T. uniporosa at this site.

GEOGRAPHICAL DISTRIBUTION WITHIN THE GAOLIGONG SHAN.— Fig. 28d . We examined a total of 6 specimens (4 males and 2 females) from the type locality on the western slope of the southcentral part of the Gaoligong Shan in Lushui County (see Type material above for exact collection data). This locality is in Core Area 4 .

OVERALL GEOGRAPHICAL DISTRIBUTION.— This species currently is known only from western Lushui County in the southcentral part of the Gaoligong Shan region, western Yunnan Province, China.

Figures

FIGURE 16. Trechine right mandibles, ventral aspect. a. Agonotrechus xiaoheishan sp. nov. b. Trechus indicus Putzeys with dentition enlarged. c. Trechus gongshanensis sp. nov. d. Trechus shibalicus sp. nov. e. Pseudepaphius gonggaicus Deuve with dentition enlarged (China, Sichuan Province, Moxi Township, NE slope of Gongga Shan). f. Trechepaphiopsis uniporosa sp. nov. with dentition enlarged. g. Epaphiotrechus fortipesoides sp. nov. with dentition enlarged. h. Trechepaphiama gaoligong sp. nov. Scale lines = 0.5 mm.

FIGURE 28. Trechepaphiopsis uniporosa sp. nov.; a. Dorsal habitus (CASENT1001923). b-c. Median lobe of aedeagus of male (CASENT1001923); b. left lateral aspect; c. ventral aspect. d..Map of locality records (red circles) for T. uniporosa in the Gaoligong Shan region. Scale lines a-c = 0.5 mm, d = 100 km.

FIGURE 37. Photographs of habitats for trechine species in the Gaoligong Shan region. a. Lushui County, Pianma Township,9.3 km ENE of Pianma along road to Lushui at Changyan He, elevation 2460 m; habitat in which specimens of Trechepaphiopsis unisetosa (Deuve), T. uniporosa sp. nov., and Trechepaphiama gaoligong sp. nov. were collected. b. Gongshan County, Cikai Township, slope S of of Heipu Yakou, elevation 3370 m; habitat in which specimens of Queinnectrechus griswoldi sp. nov., Q. balli sp. nov., and Trechus qiqiensis sp. nov. were collected. Photos by David H. Kavanaugh.

FIGURE 46. Chart showing the representation of trechine species in project-designated Core Areas (see Fig. 3) in the Gaoligong Shan region.

FIGURE 47. Chart illustrating the altitudinal ranges of trechine species represented in the Gaoligong Shan region.

FIGURE. 48. Chart illustrating the co-occurence (syntopy) of trechine species in samples from the same habitats and at the same sites in the Gaoligong Shan region.