Scymnus (Parapullus) yanzigouensis, Chen, Xiaosheng, Ren, Shunxiang & Wang, Xingmin, 2015

Chen, Xiaosheng, Ren, Shunxiang & Wang, Xingmin, 2015, Contribution to the knowledge of the subgenus Scymnus (Parapullus) Yang, 1978 (Coleoptera, Coccinellidae), with description of eight new species, Deutsche Entomologische Zeitschrift 62 (2), pp. 211-224 : 213-215

Taxon classification Animalia Coleoptera Coccinellidae

Scymnus (Parapullus) yanzigouensis sp. n. Figs 8, 12

Diagnosis.

This species is similar to Scymnus (Parapullus) nanlingicus Chen, Ren & Wang, 2012 in general appearance and male genitalia, but can be separated from it by having broad area enclosed by abdominal postcoxal lines (Fig. 8d) and the parameres narrowest at base, expanding toward apex in lateral view (Fig. 8h).

Description.

TL: 2.20-2.42 mm, TW: 1.52-1.67 mm, TH: 0.99-1.05 mm, TL/TW: 1.45, PL/PW: 0.51, EL/EW: 1.13-1.14, HW/PW: 0.56-0.58, PW/EW: 0.73-0.74.

Body oval, moderately convex, dorsum covered with white pubescence (Fig. 8 a–c). Head, antennae and mouthparts brown. Pronotum yellowish brown. Scutellum dark brown. Elytra black with apical 1/4 yellowish brown. Prothoracic hypomeron and prosternum yellowish brown. Mesoventrite, metaventrite and elytral epipleura black. Legs brown.

Head with fine frontal punctures, as large as eye facets, 0.5-1.0 diameters apart. Eyes densely faceted, interocular distance 0.47 times head width. Pronotal punctures similar to those on frons, 1.0-2.0 diameters apart. Surface of elytra with punctures larger than those on pronotum, separated by 2.0-3.0 diameters. Prosternal process rectangular, 2 times as long as its width at base; with lateral carinae distinct, parallel, extending to anterior margin of prosternum. Abdominal postcoxal lines strongly recurved and distinctly incomplete laterally (Fig. 8d), reaching 7/8 length of abdominal ventrite 1, area enclosed by lines irregularly punctate, broadly smooth along line. Abdominal ventrite 5 in male with apex truncate.

Male genitalia: penis stout (Fig. 8e). Penis capsule with outer arm stout and inner arm strongly curved, hook-shaped. Apex of penis simple (Fig. 8f). Tegmen stout (Fig. 8 g–h) with penis guide parallel sided from base to 4/5 length, then tapering abruptly to blunt apex in ventral view (Fig. 8g). Parameres narrowest at base, expanding toward apex, distinctly shorter than penis guide, densely covered with two groups of long setae at apices (Fig. 8h).

Female unknown.

Type materials.

Holotype: male, No. SCAU (E) 11531, China: Sichuan: Yanzigou, Gonggashan National Nature Reserve, Luding County, 29°41.92'N, 102°0.22'E, ca 2500 m, 28. IX. 2007, Chen XS leg. Paratypes (1): 1♂ with same data as holotype.

Distribution.

China (Sichuan).

Etymology.

The specific epithet refers to its type locality, Yanzigou Scenic Spots, Gonggashan National Nature Reserve, Sichuan Province.