Anthidiellum (Pycnanthidium) latipes (Bingham, 1897)

Nalinrachatakan, Pakorn, Ascher, John S., Kasparek, Max, Traiyasut, Prapun, Thanoosing, Chawatat & Warrit, Natapot, 2023, A review of the anthidiine bees (Apoidea, Megachilidae) in Thailand, ZooKeys 1186, pp. 235-284 : 235

Anthidiellum (Pycnanthidium) latipes (Bingham, 1897)

Fig. 2

Anthidium latipes Bingham, 1897: 495 (♀). Holotype from “Rangoon” [= Yangon], Myanmar (NHMUK, examined).

Paraanthidium latipes Bingham: Wu 1962: 162-163, fig. 16 (♀, ♂ nov.); Wu et al. 1988: 61 (♀, ♂).

Trachusa (Paraanthidium) latipes (Bingham, 1897): Wu 2006: 180 (♀, ♂).

Anthidiellum (Pycnanthidium) latipes (Bingham, 1897): Niu et al. 2016: 337, 341-343 (♀, ♂).

Material examined.

3 (3♀). Myanmar : 1♀ holotype, Rangoon [= Yangon, Myanmar ], 1-87 Bingham coll., Anthidium latipes ♀ Bingh Type B.M. TYPE HYM. 17a.1873, Col. C.T. Bingham. 96-30. (NHMUK 014026066) ; Thailand: 2♀ , Phang Nga, Kapong District, Tha Na Subdistrict (8°41'38.14"N, 98°24'28.87"E, alt. 29.4 m), 30 Apr. 2020, A. Kaosung (CUNHM, BSRU-AB-0162, 0163) .

Records from iNaturalist

(2023). Myanmar: Yangon, Yangon District, (16°47'12.3"N, 96°08'38.1"E) observed by ‘chimik’ on 25 Apr. 2022. (observation id: 113229246). Thailand: Chiang Mai, Mueang District, Suthep-Pui (18°49'00.5"N, 98°55'26.8"E, accuracy 240 m) observed by ‘jackychiangmai’ on 9 Apr. 2023 (observation id: 154207614), and on 13 Apr. 2023 (observation id: 154700134 and 154702585).

Distribution.

China (Yunnan), Myanmar (Yangon), Thailand (Chiang Mai (new record from iNaturalist 2023), Phang Nga (new record)).

Diagnosis.

Anthidiellum latipes can be assigned to a group of Asian Pycnanthidium which includes A. butarsis Griswold, 2001, A. ramakrishnae (Cockerell, 1919), A. rasorium (Smith, 1875), A. coronum (Wu, 2004), and A. cornu Tran & Engel, 2023. The group contains medium-sized bees without carina on their hindlegs ( Griswold 2001; Niu et al. 2016; see also Tran et al. 2023).

Floral association.

Marigold ( Tagetes erecta L., Asteraceae , see Fig. 2E ) and also yardlong bean ( Vigna unguiculate (L.), Fabaceae ).

Remarks.

The knowledge on the Asian Pycnanthidium is relatively scant due to the limited material and the damages in type specimens such as in Anthidiellum ramakrishnae (Griswold, 2001), and with the materials of A. coronum (discussed below). The female holotype of A. latipes from Myanmar is also not in good condition, the head and most of the legs were missing while the mesosoma and metasoma were glued together.

There is a possibility that A. coronum (Wu, 2004) is a junior synonym of A. latipes , as the color patterns on the supraclypeal area (Fig. 2C ), hindlegs (Fig. 2D ), and the shape of enlarged hind basitarsus, with ~ 1.3 length/width ratio, are more or less similar. In addition, the Thai specimens and a specimen recorded from Myanmar (through iNaturalist) share similar maculation on the supraclypeal area as seen in A. coronum , including the presence of mesad process running along the upper rim of the antennal socket.

Figures

Figure 2. Female of Anthidiellum latipes (Bingham, 1897) from Phang Nga, Thailand (BSRU-AB- 0162) (A-E), and the female holotype of A. latipes from Yangon, Myanmar (NHMUK 014026066: picture modified from NHMUK data portal) (F) A lateral habitus B dorsal habitus C face D lateral angle showing the omaulus and hind legs E female wandering on the marigold flower (Tagetes erecta L.), photographed by Andaman Kaosung F lateral habitus. Scale bars: 2 mm (A, B, D); 1 mm (C, F).