Pingleotrechus, Sun, Feifei & Tian, Mingyi, 2015

Sun, Feifei & Tian, Mingyi, 2015, First cavernicolous trechine beetle discovered in Guilin karst, northeastern Guangxi (Coleoptera, Carabidae, Trechinae), ZooKeys 545, pp. 119-129 : 120-121

Taxon classification Animalia Coleoptera Carabidae

Pingleotrechus subgen. n.

Type species.

Oodinotrechus yinae sp. n. (Cave Chaotianyan, Pingle County)

Diagnosis.

Similar to the nominate subgenus Oodinotrechus (s. str.) Uéno, 1998, but smaller and slenderer; body, in particular head and elytra, longer; head narrower, genae only slightly expanded laterally; pronotal base with sides much in advance of nearly straight medial part, without a gap submedially on each side between pronotum and elytra; scutellum visible from above; elytra slenderer, with two dorsal pores on 3rd and 4th striae, respectively; umbilical setae 5 and 6 widely separate, distance between them almost triple as that between setae 4 and 5; an additional striole running inside and forming a crescent with apical stria; aedeagus short and stout, without sagittal aileron.

Remarks.

Pingleotrechus subgen. n. is similar to Oodinotrechus (s. str.) Uéno, 1998, occurring in Maolan-Mulun karst, in many aspects, viz. short and stout body, short legs and antennae, entire frontal furrows, tridentate right mandible, well-defined labial suture, two pairs of supraorbital setigerous pores present on head, campanulate pronotum, ciliate elytral margin, presence of two dorsal pores on elytron, and unmodified protarsi in male. However, Pingleotrechus is different from the nominate subgenus in many characters as follows: body smaller and slenderer; head slightly expanded laterally (versus strongly expanded); second dorsal pore situated on 4th elytral stria (versus on 5th stria); umbilicate setigerous pores of the middle group (pores 5 and 6) widely separated (versus very close to each other); an additional, inner, apical striole, present (versus absent); male genitalia stouter, without sagittal aileron (versus with a large sagittal aileron).

Etymology.

Refers to Pingle County, the locality of the type species.

Distribution.

China (northeastern Guangxi) (Fig. 1).