Sulciclivina coxisetosa, Balkenohl, 2023

Balkenohl, Michael, 2023, Revision of the genus Sulciclivina Balkenohl, 2022 from Asia (Coleoptera, Carabidae, Clivinini), European Journal of Taxonomy 915 (1), pp. 1-57 : 21-23

Sulciclivina coxisetosa sp. nov.

urn:lsid:zoobank.org:act:24EB45DE-C11F-47A3-84D7-5D0BA3DB1664

Figs 10 , 41, 53

Diagnosis

A small-sized species with short-oval elytra, all intervals of the elytra smooth, and the lateral lobe of the clypeus completely fused with the wings. Distinguished from the other two small species, S. splendida sp. nov. and S. basiangusta sp. nov., which as well have the pronotum slightly wider than long, by the subglobose shape of the pronotum with a deeply carved median line. In S. basiangusta , the clypeal wings are slightly developed but completely missing in S. coxisetosa sp. nov. and S. splendida . In contrast to S. splendida , the disk of the pronotum of S. coxisetosa shows a different pattern of the puncture groups. Moreover, in S. coxisetosa the female gonocoxites are extraordinarily different from all other species of the genus.

Etymology

The name refers to the high number of setae on the female gonocoxites.

Type material

Holotype

NEPAL • ♀; with white black printed and handwritten with black ink label and data: “Danda Pakhar 1600- 2500m 1.6.” / “Nepal, 1977 M.Brancucci ” / “ CLIVINA (Eoclivina) sp. P.Bulirsch det. 2016”; NHMB.

Remark. The terminal segment of the left antenna is missing.

Description

MEASUREMENTS. Holotype: body length 5.63 mm, width 1.72 mm; L/W of pronotum 0.92; L/W of elytra 1.77.

COLOUR. Glossy. Piceous. Labrum, intermediate and hind leg fuscous, antenna and tarsomeres of front leg fuscous. Supraantennal plate at the margin and anterior part of lateral margin of pronotum translucent-fuscous.

HEAD. A third narrower than pronotum. Clypeus with central part nearly straight, indistinctly bilobed anteriorly; lateral lobe distinctly projecting and completely fused with wing. Supraantennal plate laterally less convex at middle, laterally somewhat less projecting than eye; clypeus and wing slightly reflexed margined, supraantennal plate distinctly reflexed margined. Supraantennal plate overlapping eye anteriorly nearly by a quarter (dorsal view), with supraorbital keel extended up to gena level with slight interruption at middle by anterior supraorbital seta, separated from wing by sharp notch. Clypeus transverse, slightly convex, separated from frons by distinct sharp step and sulcus, step and sulcus in form like an inverted flat V. Frons moderately convex, with two small longitudinal impressions at middle, with supraorbital carina up to posterior eye-level. Clypeus and frons smooth, separated from supraantennal plate and supraorbital carina by deep moderately wide furrow, furrow slightly widening at the posterior end; with two supraorbital setigerous punctures at posterior third of the eye. Neck constriction missing. Eye convex in dorsal view. Main part of eye situated ventrally where it is globose. Due to the overlapping supraantennal plate, the eye resembles in lateral view an oval band. Gena distinct, moderately convex, covering more than a quarter of posterior eye in ventral view. Antenna relatively short, reaching middle of pronotum, antennomeres five to ten moniliform (L/W around 1.1). Labrum nearly straight anteriorly, with isodiametric-irregular reticulation, six setose. Mentum with transverse reticulation, with lobe flattened, shape of lobe long-oval, with short carina at median tooth. Median tooth moderately wide, not as protruding anteriorly as lobe, hollowed out and rounded anteriorly.

PRONOTUM. Disk distinctly convex in lateral and frontal view. Slightly wider than long, subglobose. Reflexed lateral margin nearly smooth, slightly convex attenuating in anterior half, widest behind middle; anterior angle distinct, slightly projecting, posterior angle missing; lateral channel narrow, completely and regularly rounded off before posterior setigerous puncture and continuing up to base. Median line deeply embedded, sharp, narrow, complete. Anterior transverse line consisting of longitudinal connected punctures, joining median line, finely joining anterior margin. Surface glossy, laterally with longitudinal group of punctures of moderate size, with few transverse wrinkles, with very few microscopic punctures on disk. Base distinctly marked, three times as wide as lateral channel. Proepisternum just visible in dorsal view.

ELYTRON. Disk slightly flattened in anterior half in lateral view, distinctly and regularly convex in frontal view. About 1.8 times as long as wide, shape oval with maximum width slightly behind middle. Reflexed lateral margin smooth. Scutellar striole missing; setigerous tubercle at base of first stria, with small but distinct tubercle at base of second stria, basal declivity with slight isodiametric reticulation. Humeral tooth situated at base of fourth stria. Striae moderately deep, distinctly and regularly punctuate-striate, one to three free at base, four reaching humerus, one and two, three and four, and five and six joining apically. Intervals convex, more convex laterally, interval eight convex at apex. Setigerous punctures missing on intervals. Surface of intervals glossy, interval eight smooth, intervals smooth at apex.

HIND WINGS. Alae reduced to a small rudiment (on the basis of the HT).

LOWER SURFACE. Proepisternum covered in lateral half with distinct isodiametric reticulation and with some transverse wrinkles. Sternite of abdomen laterally with limited number of moderately large punctures, smooth posteriorly, smooth at middle but with microscopic punctures, apical segment smooth.

LEGS. Protibia covered with fine longitudinal reticulation, with three spines of moderate length, not sulcate dorsally, movable spur apically moderately arcuate. Intermediate tibia covered with isodiametric-irregular reticulation.

MALE GENITALIA. Unknown.

FEMALE GONOCOXITE AND EPIPLEURITE (Fig. 41). Gonocoxite foliform, slender, flattened dorsally and ventrally, with seven long nematiform setae positioned at the median side, with one long apical and one long subapical nematiform seta arising from the apex of the gonocoxite. Epipleurite semi-rectangular, with conspicuously widened angulated rod.

Variation

Unknown.

Sexual dimorphism

Unknown.

Distribution

Known from the type locality in Danda Pakhar, Nepal.

Figures

Figs 4–11. Sulciclivina Balkenohl, 2022, habitus, dorsal view. 4–5. S. attenuata attenuata (Herbst, 1806). 4. ♀, lectotype (MFNB). 5. ♂ from Swat (CMBB). 6. S. attenuata semireticulata subsp. nov., ♂, holotype (MNHN). 7. S. bhamoensis (Bates, 1892), ♀, paralectotype (RBINS). 8. S. mikirensis sp. nov., ♀, holotype (NHMB). 9. S. basiangusta sp. nov., ♂, holotype (NHMB). 10. S. coxisetosa sp. nov., ♀, holotype (NHMB). 11. S. splendida sp. nov., ♂, holotype (CADW).