Siobla listoni Niu & Wei, 2012

Niu, Gengyun & Wei, Meicai, 2013, Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae), Zootaxa 3746 (1), pp. 41-68 : 50

Siobla listoni Niu & Wei, 2012

( Figs 2 c, 2d, 4k, 4l, 7g –i, 9f, 9s, 10c, 10d)

Siobla listoni Niu et al., 2012: 407 . ♀, type locality: Mt. Gongshan, Yunnan ( China).

Distribution. China (Yunnan, Shaanxi, Hubei).

Remarks. The species is similar to S. parallela sp. nov. but differs from it in the forewing infuscate and pterostigma dark brown; the antenna short and stout, with the subapical antennomeres distinctly enlarged, the 6th antennomere less than 2 × as long as broad; the breadth of apical sheath in lateral view distinctly broader than breadth of metabasitarsus, apical sheath 1.4 × as long as basal sheath; the middle serrulae each with 3–4 distal teeth; the dorsal side of mesoscutellum flat with the posterior margin obtusely truncate; the posttergite and metapostnotum microsculptured, posttergite with a distinct middle carina. The species is also somewhat similar to S. acutitheca Niu & Wei, 2010 , but differs from it in antenna entirely black in both sexes and the 5th to 8th antennomeres distinctly enlarged; the posterior margin of pronotum broadly reddish brown; the postocellar area elevated with lateral furrows only weakly divergent backwards; the ovipositor sheath very narrow; malar space as long as diameter of lateral ocellus; the posterior corner of mesoscutellum in female sharp; and the four anterior trochanters black in both sexes.

According to results from SDEI, one female (paratype) 10.06.2009, Gongshan 10km NW 2100 m, 27.798°N 98.583°E, 2100m, leg. S. M. Blank, A. D. Liston & A. Taeger (SDEI) shares the barcode cluster BOLD:ABV4520 with S. atra (similarity 98.39%; one male, 0 6.06.2009, Gongshan 10km NW 2100 m, 27.798°N 98.583°E, 2100m, leg. S. M. Blank, A. D. Liston & A. Taeger).

Figures

FIGURE 2. Siobla species, dorsal view. a. S. jiangi, sp. nov., holotype, ♀; b. S. jiangi, sp. nov., paratype, ♂; c. S. listoni, paratype, ♀; d. S. listoni, paratype, ♀; e. S. parallela, sp. nov., holotype, ♀; f. S. parallela, sp. nov., paratype, ♂; g. S. pseudoplesia, paratype; h. S. pseudoplesia, paratype, ♂. Scale bar = 1 mm.