Trachusa (Paraanthidium) wuae Niu, 2019

Niu, Ze-Qing, Ascher, John S., Orr, Michael C., Griswold, Terry & Zhu, Chao-Dong, 2019, Overview of the bee genus Trachusa Panzer, 1804 (Hymenoptera: Apoidea Megachilidae: Anthidiini) from China with description of three new species, Zootaxa 4646 (2), pp. 251-270 : 262-269

Trachusa (Paraanthidium) wuae Niu , sp. nov.

( Fig. 11 : A–F, male)

Diagnosis: This new species is only known from the male, and it is very similar to T. muiri and T. rufobalteata . Wu et al. (1988) and Wu (2006) misidentified it as T. muiri . Kasparek (2017) reexamined the allotype (male) of T. muiri in the collection of Mavromoustakis, redescribed the male and provided images. The main differences between the new species and T. muiri are as follows: T2 with a yellow linear stripe on each side ( Fig. 11D ); the genitalia with large, forked gonostylus with two equally strong arms ( Fig. 11 F-c). This new species can be distinguished from T. rufobalteata by the lower half of its supraclypeus being yellow ( Fig. 11B ), scutellum slightly emarginate medially ( Fig. 11C ), whereas the latter species has an immaculate supraclypeus, scutellum deeply emarginate medially.

Description: Male, BL= 8.5 mm ( Fig. 11A ); head broader than long, HW: HL=66: 58 ( Fig. 11B ); gena slightly narrower than eye, GW: EW=12: 15; MtW: MsW=174: 180 ( Fig. 11C , Fig. 11D ); ocelloccipital distance as long as ocellocular distance, OCD: OOD=10: 10 ( Fig. 11B ). Antenna long, reaching the apex of the scutellum, second to tenth flagellomere nearly equal in length, eleventh one slightly longer ( Fig. 11A ). Clypeus broader than long, apical margin slightly emarginate in middle, with fine and sparse punctures ( Fig. 11B ); subantennal suture obviously arcuate outwardly ( Fig. 11B ); mandible with three black teeth ( Fig. 11B ); vertex dull, with dense and fine punctures ( Fig. 11B ); omaular carina present, extending down to middle of mesepisternum; pronotal carina weak, shorter in height than medial bump of pronotum ( Fig. 11C ); scutum shining, with dense rounded punctures ( Fig. 11C ); scutellum shining, broadly rounded and slightly emarginate medially, nearly straight along rim, with dense rounded punctures ( Fig. 11C ); propodeal enclosure with band of punctures at top interrupted or at least sparser medially; disc of T1–T3 with dense rounded punctures ( Fig. 11D ). Head with strong, lemon yellow maculations present on clypeus except for a narrow, brown and translucent apical margin; mandible except the black apex; lower paraocular area entirely up to antennal sockets; and lower half of supraclypeal area ( Fig. 11B ); scape black ( Fig. 11B ); scutum, scutellum, axilla, and pronotal lobe black ( Fig. 11C ); tegula largely black, but center dull reddish black ( Fig. 11C ); T1 black, T2 largely black but with a lemon yellow linear stripe on each side, T3–T4 largely black but with a transverse and lemon yellow discal stripe widely notched at each side of the center ( Fig. 11A , Fig. 11D ), T5 yellow but with a black marking on each side ( Fig. 11A ); underside of S4–S5 with black combs ( Fig. 11E ); S7 (a), S8 (b) as shown in Fig. 11 F-a, Fig. 11 F-b respectively; genitalia with large, forked gonostylus with two equally strong arms ( Fig. 11 F-c).

Female, unknown.

Type material: Holotype, ♂, China, Yunnan, Cheli (23º06′N, 102º10′E), 560 m, 26.IV.1957, leg. Da-Hua LIU ( IZCAS).

General distribution: China (Yunnan *).

Etymology: The specific name is dedicated to Professor Yan-Ru Wu of the Institute of Zoology, Chinese Academy of Sciences for her contributions to bee taxonomy.

Figures

FIGURE 11. Trachusa (Paraanthidium) wuae Niu, sp. nov., A–F, male. A: Body in lateral view; B: Head in frontal view; C: Mesosoma in dorsal view; D: Metasoma in dorsal view; E: Metasoma in ventral view, showing combs on S5; F: Drawing of S7 (a), S8 (b), and genitalia (c), source: Wu (2006). Scale bars: 1.0 mm.