Bathanthidium (B.) hainanense, Niu, Ze-Qing, Wu, Yan-Ru & Zhu, Chao-Dong, 2012

Niu, Ze-Qing, Wu, Yan-Ru & Zhu, Chao-Dong, 2012, A new species of Bathanthidium Mavromoustakis (Hymenoptera: Megachilidae: Anthidiini) from China, with a key to the species, Zootaxa 3218, pp. 59-68 : 61-62

Bathanthidium (B.) hainanense sp. nov.

( Figs. 1–12 )

Diagnosis. This new species can be distinguished from all other Chinese Bathanthidium s. str. by the following combination of characters: fovea behind propodeal spiracle rounded, delimited by a strong carina; mandible with 4 teeth; third flagellum as long as second one; clypeus black, without lateral yellow marks; paraocular area at ventral extreme with a little triangle dull yellow mark; scutellum without yellow mark apically; T1 without lateral yellow marks, T2 with pair of small, median, stripe-like yellow marks, T3-T5 with broader entire yellow bands.

Description. Female. BL=9.0mm ( Fig.1 ); head broader than long, HW: HL=60: 50 ( Fig.2 ); gena broader than eye, GW: EW=15: 12 ( Fig.3 ); width of metasoma slightly narrower than the width between the tegulae. Clypeus broader than long, with punctures on clypeus, vertex and genae larger and denser; frons with dense punctures, size of punctures smaller than that on vertex; mesoscutum and scutellum with round, dense punctures ( Fig.4 ); mandible widened apically, with 4 teeth ( Fig.5 ); third flagellum as long as second one; subantennal suture directed toward outer margin of antennal socket; face without longitudinal median ridge ( Fig.2 ); fore wing with two submarginal cells of roughly equal in length, basal vein nearly straight, meeting vein Cu at acute angle, 2nd m-cu slightly exceeding apical margin of 2nd submarginal cell, marginal cell distal to stigma on costa longer than stigma; stigma nearly twice as long as broad, prestigma short, less than twice as long as broad ( Fig.6 ); jugal lobe of hind wing less than half as long as vannal lobe, vein cu-v less than half as long as second abscissa of M+Cu; pronotal lobe with a dorsal-anterior carina; omaular carina absent; axilla rounded and not produced posteriorly ( Fig.4 ); metanotum without median spine; scuto-scutellar fovea open, each half of scuto-scutellar fovea about four times as wide as long ( Fig.4 ); fovea behind propodeal spiracle rounded, delimited by strong carina ( Fig.7 ), basal zone of propodeum distinct laterally, with regular, shiny, nearly horizontal pits ( Fig.8 ); basal margin of T1 with carina; pygidial plate absent; S6 unmodified, margin thin; front and middle tibia with one spine on outer side ( Fig.9 ), hind tibia without spine; outer surface of tibiae without tubercles; tarsal claws with inner median tooth, arolia present and large ( Fig.10 ); ventral surface of metasoma with scopa of pollen-carrying hairs ( Fig.11 ). Clypeus, mandible, vertex, frons, pronotal lobe, mesoscutum, scutellum, and all legs black; paraocular area at ventral extreme with a little triangle dull yellow mark ( Fig.2 ); metasoma black, except T2 with median pair of small stripe-like yellow marks, T3- T5 with broader entire yellow bands ( Fig.12 ). Pubescence sparse; face, mesosoma and anterior surface of T1 covered with short, sparse white hairs; all legs covered with sparse blackish-brown short hairs; apex of T6 with denser dull brownish-yellow hairs; S2-S5 with denser, longer golden-yellow hairs forming scopa ( Fig.11 ).

Male. Unknown.

Type material. Holotype, Ƥ, China, Hainan, Wuzhi mountain, 18.89ºN, 109.09ºE, 1147m, 10 Apr. 2010, coll. Mei-Ying Ling. The type specimen is deposited in the Insect Collection of Institute of Zoology, Chinese Academy of Sciences, Beijing, China.

Distribution. China (Hainan).

Etymology. Named after the type locality, Hainan Province, China.

Figures

FIGURES 1 – 6. Bathanthidium (B.) hainanense sp. nov., female. 1, Body in dorsal view; 2, Head in frontal view, showing the mark at the ventral of paraocular area; 3, Head in lateral view, showing the width of gena and eye; 4, Mesosoma in dorsal view, showing punctures on mesoscutum and scutellum, and the opened scuto-scutellar fovea; 5, Mandible in frontal view, showing the teeth; 6, Fore wing in dorsal view, showing the character of the forewing.

FIGURES 7 – 12. Bathanthidium (B.) hainanense sp. nov., female. 7, Fovea behind propodeal spiracle in frontal view, showing the shape of the fovea and the carina delimited the fovea; 8, Propodeal basal zone lateral pits in frontal view, showing the regular, shiny, nearly horizontal lateral pits; 9, Middle tibia, showing the tibial spine; 10, Distitarsus of front leg, showing the arolium; 11, Metasoma in lateral view, showing the scopa on S 2 - S 5; 12, Metasoma in dorsal view, showing the marks on T 2 - T 5.