Scymnus (Parapullus), Yang

Yu, Guoyue, Montgomery, Michael E. & Yao, Defu, 2000, Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae), The Coleopterists Bulletin 54 (2), pp. 154-199 : 167-169

Subgenus Parapullus Yang

Scymnus (Parapullus) was established by Yang (1978) for a Taiwanese species: S. secula Yang , and two additional Palearctic species have been assigned to this subgenus (Pang and Yu 1993). The new species described here resembles S. (Parapullus) alishanensis Pang and Yu , but is separated from it by the median piece of tegmen narrowing gradually to a pointed tip in ventral view, and by the finely punctate first abdominal sternite. The new species also resembles the European S. (Parapullus) abietis (Paykull) , but in the latter the lateral lobes of the tegmen are narrower and slightly shorter than the median piece of the tegmen.

Scymnus (Parapullus) tsugae Yu and Yao , new species ( Fig. 8)

Description. Male. Length 2.40 mm, width 1.35 mm. Form oval, moderately convex dorsum moderately convex. Color brown, except head and legs yellowish brown, elytra reddish brown. Interocular distance less than 1/2 head width. Innerocular margins arcuate. Frons weakly convex, finely punctate. Anterior margin of clypeus very weakly incurvate. Antenna 10­segmented, proportions as illustrated ( Fig. 8f). Maxillary palpus terminal segment widest at middle; inner, shorter lateral side slightly shorter than basal thickness, distal side strongly oblique. Pronotum with punctation similar to head. Elytral punctation distinctly coarser, pubescence arranged in weak S­form. Prosternal carinae moderately separated, slightly convergent anteriorly. Postcoxal line of first abdominal sternite incomplete, reaching 6/7 sternite length, enclosed area finely punctate, smooth near line. Hind margin of fifth abdominal sternite nearly truncate; apex of sixth slightly incurvate. Genitalia: Sipho ( Fig. 8a) moderately stout with well­developed siphonal processes; apex of sipho simple, without distinct appendix. Tegmen ( Fig. 8b, c) moderately stout; median piece slightly narrowed at base, converging gradually apically to a pointed tip in ventral aspect. Lateral lobes shorter than median piece, about 2/3 length of median piece, each lateral lobe apex with two groups of nearly uniform setae oriented in different directions ( Fig. 8b, e).

Distribution. China (Yunnan).

Type Series. Holotype: (Ƌ), Yunnan: Lijiang : (26.8 N, 100.2 E), IV­1996 ( BAAF) . Paratype: (1 Ƌ, same data as holotype) ( CAF) .

Etymology. The name refers to the plant on which it was found, Tsuga spp.