Trachusa (Paraanthidium) pingdaensis 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 : 261-262

Trachusa (Paraanthidium) pingdaensis Niu , sp. nov.

( Fig. 9 : A–H, female)

Diagnosis: This new species is only known from the female; the mandible is five-toothed, the second recurrent vein ends distal to second submarginal crossvein, the subantennal suture is slightly outwardly arcuate, and the scutellum is broadly rounded but emarginate medially, the lateral margin of axilla convex, so it belongs to the subgenus Paraanthidium . The new species is very similar to T. (P.) longicornis , but it can be distinguished from T. (P.) longicornis by the following characters: Clypeus without a shining longitudinal slightly elevated middle line, with fine and dense punctures ( Fig. 9C ); pronotal lobe small and without obvious sharp lamella directed upwards, distinct medial bump of similar height to carina ( Fig. 9D ); apical half disc of T4 yellow, not black ( Fig. 9F ).

Description: Female, BL=9.0–10.0 mm ( Fig. 9A ); head broader than long, HW: HL=79: 72 ( Fig. 9B ); gena narrower than eye, GW: EW=12: 18; MtW: MsW=95: 83 ( Fig. 9D , Fig. 9E ); ocelloccipital distance longer than ocellocular distance, OCD: OOD=15: 9. Clypeus broader than long, concave with apical margin slightly emargin- ate in middle, without a shining longitudinal slightly elevated middle line starting from basal to middle of clypeus, punctures fine and dense ( Fig. 9C ); subantennal suture slightly arcuate outwardly ( Fig. 9C ); mandible dull, minutely roughened and bearing very short hairs, broadened apically, with five black teeth; vertex polished and shining, with sparse and rounded punctures ( Fig. 9B ); omaulus distinctly angled but lacking carina, anterior surface weakly concave if at all; pronotal lobe lamellate, but relatively small, without obvious sharp lamella directed upwards ( Fig. 9D ); scutum polished and shining, with large and dense rounded punctures ( Fig. 9D ); scutellum broadly rounded, emarginate medially, overhanging metanotum, with dense and rounded punctures ( Fig. 9D ); lateral margin of axilla convex, with punctures similar to those of scutellum ( Fig. 9D ); disc of T1–T3 with dense and rounded punctures ( Fig. 9E ); vein cu-v of hind wing oblique, nearly half as long as second abscissa of M+Cu ( Fig. 9H ), second recurrent vein of fore wing ends distal to second submarginal crossvein ( Fig. 9G ); arolia present, claw with inner median tooth ( Fig. 9F ). T1–T3 black, basal half of disc of T4 black, apical half of disc of T4 yellow, marginal zone of T4 yellowishbrown, T5–T6 yellow ( Fig. 9F ); scopa bright yellow ( Fig. 9A ); wings fuscated throughout ( Fig. 9G , Fig. 9H ).

Male, unknown.

Type material: Holotype, ♀, China, Yunnan, Longling Xian, Pingda (24º21′N, 98º56′E), 1600 m, 19.V.1955, leg. Bing-Rong OU ( IZCAS) ; Paratypes: 3 ♀, same label information as the holotype ( IZCAS); paratype , 1 ♀, Fukien, S. China, Changting , Tsingshanpu (25º48′N, 116º18′E), 30. VI .1940, leg. T. Maa (Nicosia).

General distribution: China (Yunnan *).

Etymology: The type location Pingda (Yunnan, China) is given as the specific name.

Remarks: Wu (2006) assigned the four specimens of the new species to T. (P.) longicornis .

Figures

FIGURE 9. Trachusa (Paraanthidium) pingdaensis Niu, sp. nov., A–H, female. A: Body in lateral view; B: Head in frontal view; C: Supraclypeal area in frontal view, showing subantennal suture; D: Mesosoma in dorsal view; E: Metasoma in dorsal view, showing T1–T3; F: Metasoma in dorsal view, showing T4–T6; G: Fore wing in frontal view, showing the position of the second recurrent vein; H: Hind wing in frontal view, showing vein cu–v and f M+Cu. Scale bars: 1.0 mm.