Micrencaustes (Mimencaustes) renshiae, Meng, Zhao-Na, Ren, Guo-Dong & Li, Jing, 2014

Meng, Zhao-Na, Ren, Guo-Dong & Li, Jing, 2014, Two new species of Micrencaustes Crotch, subgenus Mimencaustes Heller from China (Coleoptera, Erotylidae, Encaustini), ZooKeys 391, pp. 55-64 : 57-59

Micrencaustes (Mimencaustes) renshiae sp. n.

Type material.

Holotype. male, CHINA: Hainan Province, Baisha County, 19.2248°N, 109.4514°E, alt. 450 m, 27 May 2008, Yi-Bin Ba & Jun-Tong Lang leg. (MHU). Paratypes. 3 males, 4 females, same data as holotype (MHU).

Description.

Body (Fig. 1) moderately elongate, length: 10.5-12.4 mm, width: 4.1-4.5 mm; widest at base of elytra, general color dark, slightly shining. Head with an irregular orange mark between eyes. Pronotum with two longitudinal, curved orange marks, each bearing a short branch in the middle.

Head (Fig. 2) strongly and sparsely punctured on vertex, with ocular lines. Clypeus strongly and rather closely punctured, with anterior border feebly emarginate, with a fovea on each side of the base. Eyes large, moderately prominent laterally. Antennae (Fig. 3) extending posterior border of pronotum; antennomere III about 1.75 times as long as IV; antennomere IX asymmetrical, almost triangular; antennomere X bowl-shaped; antennomere XI hemispherical, narrower than antennomere X, slightly constricted in middle; relative lengths of antennomeres II–XI: 12: 35: 20: 19: 19: 19: 20: 18: 16: 19. Maxillary palp terminal segment triangular, sides rounded, nearly 2.7 times as wide as long. Mentum (Fig. 4) with plate triangular, sides concave, with coarse punctures and setae; submentum roughly punctured, with long golden setae.

Pronotum (Fig. 5) widest at base (pl/pw = 0.69-0.74); lateral margin slightly curved; pronotal anterior margin straight in the middle; basal margin weakly sinuate. Pronotum finely punctate, punctures evenly scattered; with a group of coarse punctures on each side of base area. Anterior angles projected; posterior angles nearly rectangular.

Prosternum (Fig. 6) coarsely and sparsely punctured on lateral areas, with some oblique rugae; an irregular depression in the middle of base area; surface with golden pubescence. Prosternal process triangular, strongly emarginated at apical border, produced into a blunt point at the base. Prosternal femoral lines almost straight, converging anteriorly and reaching the front edge of coxae.

Scutellum pentagonal, with fine and spare punctures.

Elytra widest near base, then gradually narrowing to apex. Each elytron with 8 striae; strial punctures stronger at basal part, gradually weakened apically and disappeared before extremity; intervals finely punctured and wrinkled.

Mesoventrite (Fig. 7) broad, with a median quadrate depression; mesocoxal lines short; sternum with fine and sparse punctures.

Mesotibia (Fig. 8) with outer edge of apex acutely toothed.

Male genitalia (Fig. 9) with median lobe weakly curved; narrowed to a point in lateral view; median strut about 1.31 times as long as median lobe.

Female genitalia (Fig. 10) with narrow styli at apex of coxite, and styli rounded apically, covered with setae at apex. Female spermatheca as in Fig. 11.

Distribution.

Known only from the type locality (China: Hainan Province, Baisha County).

Diagnosis.

Micrencaustes (Mimencaustes) renshiae is most similar to Micrencaustes (Mimencaustes) acridentata Li & Ren, 2006, due to the similar form and color pattern of pronotum. The new species can be distinguished from it by the head with orange mark; prosternum with an irregular depression in the middle of base area; prosternal femoral lines reaching the front edge of coxae. Micrencaustes (Mimencaustes) acridentata without orange mark on head; prosternum with a distinctly depressed in the middle; prosternal femoral lines surpassing the front edge of coxae.

Etymology.

This species is named in honor of Mr. Guo-Dong Ren, teacher of author Jing Li, who helped a lot during our work.