Scymnus (Pullus) jaculatorius Yu

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 : 181-182

Scymnus (Pullus) jaculatorius Yu , new species

( Fig. 18)

Description. Male. Length 1.85 mm, width 1.10 mm. Form oval with sides nearly parallel at middle, dorsum moderately convex. Color black, except basal two segments of antennae, apical margin of terminal segment of maxillary palpi, tarsi, and posterior part of abdomen brown. Interocular distance slightly less than 1/2 head width. Innerocular margins arcuate, divergent posteriorly. Frons finely, densely punctate. Antenna 11­ segmented, proportions as illustrated ( Fig. 18j). Maxillary palpus terminal segment with arcuate sides, distal side slightly oblique. Pronotum punctation coarser than head. Elytral punctures slightly finer than pronotum, much coarser than head, pubescence arranged in S­form. Prosternal carinae distinctly convergent anteriorly. Postcoxal line of first abdominal sternite arcuate, complete, extending about 2/5 sternite length, enclosed area irregularly punctate, coarser posteriorly, smooth near line. Fifth abdominal sternite hind margin broadly arcuate; sixth sternite apex distinctly emarginate. Genitalia: Sipho ( Fig. 18a) relatively slender, basal 2/3 strongly arcuate; siphonal capsule with short outer process, long inner process; simple siphonal apex, without appendix. Tegmen ( Fig. 18b, c) characteristic; in ventral aspect, median piece narrowing gradually from base for 5/6 length then sharply to teat­shaped tip; in lateral aspect, median piece thickest at basal 1/3. Lateral lobes of tegmen slightly shorter than median piece, with short setae.

Distribution. China (Yunnan).

Type Series. Holotype: (Ƌ), Yunnan: Lijiang: Yuelongxueshan (26.8 N, 100.2 E), 30­IV­1997, Yao D. et al. leg. ( BAAF).

Etymology. The name refers to the shape of the median piece of tegmen in lateral view.

Remarks. This species resembles S. (P.) robustibasalis Yu , new species, and S. (Neopullus) ater Kugelann in body size and coloration. It differs from the former by relatively long lateral lobes of tegmen, slender siphonal capsule and overall black dorsal surface. In the latter species, the median piece of tegmen is distinctly shorter than the lateral lobes, and the lateral lobes have long setae. It also resembles Pseudoscymnus tsugae Sasaji and McClure in coloration, but the body of the new species is more slender.