Scymnus (Parapullus) annuliformis, 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 : 211-212

Taxon classification Animalia Coleoptera Coccinellidae

Scymnus (Parapullus) annuliformis sp. n. Figs 4, 10

Diagnosis.

This species is similar to Scymnus (Parapullus) parallelicus Chen, Ren & Wang, 2012 in general appearance and male genitalia, but can be separated from it by having slender, ring shaped apex of penis (Fig. 4f) and the abdominal postcoxal lines strongly recurved toward base of ventrite (Fig. 4d). It also resembles Scymnus (Parapullus) malleatus Chen, Ren & Wang, 2012, particularly the ring shaped apex of penis, but can be recognized from it by having narrow and short parameres (Fig. 4h) and the different shape of penis capsule.

Description.

TL: 2.28-2.34 mm, TW: 1.58-1.71 mm, TH: 1.06-1.15 mm, TL/TW: 1.37-1.44, PL/PW: 0.51-0.53, EL/EW: 1.07-1.13, HW/PW: 0.60-0.61, PW/EW: 0.67-0.71.

Body oval, moderately convex, entirely reddish brown, dorsum covered with white pubescence (Fig. 4 a–c).

Head with fine frontal punctures, as large as eye facets, 1.0-2.0 diameters apart. Eyes densely faceted, interocular distance 0.49 times head width. Pronotal punctures larger than 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 trapezoidal, 2.5 times as long as its width at base; with lateral carinae distinct, extending to anterior margin of prosternum, slightly convergent anteriorly. Abdominal postcoxal lines strongly recurved and distinctly incomplete laterally (Fig. 4d), reaching 5/6 length of abdominal ventrite 1, area enclosed by lines finely punctate, broadly smooth along line. Abdominal ventrite 5 in both sexes with apex truncate.

Male genitalia: penis moderately stout (Fig. 4e). Penis capsule with small inner arm and large outer arm. Apex of penis slender, ring shaped (Fig. 4f). Tegmen stout (Fig. 4 g–h) with penis guide parallel sided from base to 3/4 length, then tapering gradually to blunt apex in ventral view (Fig. 4g). Parameres stout with obliquely truncate apex, longer than half length of penis guide, densely covered with two groups of long setae at apices (Fig. 4h).

Female similar to male except for sexual characters.

Type materials.

Holotype: male, No. SCAU (E) 11527, China: Anhui: Hongshan, Yaoluoping National Nature Reserve, Yuexi County, 31°0.85'N, 116°8.67'E, ca 800 m, 30. IX. 2010, Wang XM leg. Paratypes (9): Anhui: 1♂ with same data as holotype. 1♂, Yaoluoping National Nature Reserve, Yuexi County, 30°58.95'N, 116°4.83'E, ca 1000 m, 28. IX. 2010, Li WJ leg. Tibet: 1♀, Cibagou National Nature Reserve, Chayu County, 28°33.69'N, 97°5.10'E, ca 2000 m, 13. X. 2007, Chen XS leg. 2♀, Xiachayu Town, Chayu County, 28°30.04'N, 97°0.84'E, ca 1800 m, 14. X. 2007, Chen XS leg. 1♂, Xiayadong Village, Yadong County, 28°29.29'N, 97°1.36'E, ca 2800 m, 29-30. IX. 2009, Chen XS leg. 1♀, Motuo County, Linzhi City, 29°19.30'N, 95°18.33'E, ca 760 m, 17. X. 2009, Chen XS leg. 1♀, Lebu Village, Cuona County, 27°48.63'N, 91°44.98'E, ca 2400 m, 24. X. 2011, Li WJ leg. 1♂, Mama Village, Cuona County, 27°47.44'N, 91°46.56'E, ca 2800 m, 25. X. 2011, Huo LZ leg.

Distribution.

China (Anhui, Tibet).

Etymology.

The specific epithet refers to its penis with ring shaped apex.