Megachile (Callomegachile) parornata Chatthanabun, Warrit and Ascher, 2020

Chatthanabun, Nontawat, Ascher, John S., Pinkaew, Nantasak, Thanoosing, Chawatat, Traiyasut, Prapun & Warrit, Natapot, 2020, Resin bees of genus Megachile, subgenera Callomegachile and Carinula (Hymenoptera, Megachilidae) from Thailand with description of a new species, ZooKeys 997, pp. 95-144 : 95

Megachile (Callomegachile) parornata Chatthanabun, Warrit and Ascher nom. nov. Figs 21 , 22

Megachile gigas Wu, 2005: 159; preoccupied (junior primary homonym, not Megachile gigas Schrottky, 1908, Brazil). Female holotype (erroneously described as male) (IZB, examined) Xiaomengyang, Xishuangbanna, Yunnan, China.

Diagnosis.

Female superficially resembles M. (Callomegachile) ornata Smith, 1853 except T1 covered with black hairs; T2-T5 covered with brick-red hairs; T6 covered with pale yellow hairs (Fig. 22g, h ); scopa brick-red.

Redescription.

Female. Length. Total body length 20.00-21.50; wingspan 35.55-38.24; forewing 14.84-16.13. Structure and color. Head black; ventral margin of paraocular area with brown hairs; clypeus trapezoid with rough surface and sparse punctures; supraclypeal area convex and subtriangular with rough surface and sparse punctures; mandible with three teeth, without cutting edge; outer surface of mandible minutely roughened with long brown hairs; labrum length twice as long as wide with round apex, surface minutely convex and rough with erect long brown hairs at apex; gena with sparse punctures; bare vertex with sparse punctures, ID shorter than OD, ID/OD = 0.28 ± 0.01; antennae with eleven flagella, first flagellomere wider than long, shorter than the second; body parallel-sided; scutum and scutellum hairless except anterior margin of scutum with brown hairs; lower part of metathorax with white hairs; scutum and lower part of mesepisternum with coarsely striate puncture pattern; procoxa covers with brown hairs; pro- and mesotibiae with two apical spines, mesotibial spine bifurcate; apex of metatibiae with spine at apex; pro- and mesotarsus with short brown hairs; metatarsus with dense short fulvous hairs inner side and short brown hairs outer side; forewing length yellow hyaline with yellowish-brown vein; T1 covers with black hairs; T2-T5 cover with brick-red hairs; T6 covers with pale yellow hairs, round apex; scopa fulvous-red.

Male. Unknown.

Literature records.

China. Yunnan ( Wu 2005); Vietnam. Hoa-Binh, Vinh-Quang ( Wu 2005).

Material examined.

Female holotype (erroneously described as male). China. "Yunnan, Xishuangbanna, Xiaomengyang (22°N, 100.8°E), 850 m; 1957. IX. 6, collected by Zang Ling-Chao; Holotype; female, Megachile (Callomegachile) gigas Wu, 2005; det. Y. R. Wu; IOZ(E) 210406"; Thailand (new record). Bangkok Province: 1♀, Dusit, 8-IX-1968, coll. Patchanee (leg. NC and NW). Chiang Mai Province: 1♀, Meuang district, Faculty of Agriculture, 4-VIII-1981, coll. Vijit (leg. NC and NW); 1♀, Meuang district, Chiang Mai University, 6-VIII-1981, coll. Sumrid (leg. NC and NW). Nakhon Ratchasima Province: 1♀, 30-VI-1962, coll. unknown (leg. NC and NW); 1♀, Faculty of Forestry, 10-VII-1968, coll. K. Vajropala (leg. NC and NW).

Etymology.

The species name refers to the close resemblance to M. ornata .

Remarks.

The wide published distribution of M. ornata from Nepal to the Indonesian Archipelago raises a question regarding whether this is a single species or a species complex. Since the type material of M. ornata was collected from Sumatra, Indonesia, specimens reported under this name from other mainland Asian countries should be re-examined. Furthermore, whereas no additional specimens of M. parornata were collected and deposited in NHMCU-BSRU and CMU since 1968, Tadauchi and Tasen (2009) recorded one specimens of M. ornata from Chiang Mai province (not seen by us). Until, male specimens of both M. parornata and M. ornata are collected and studied, we are proposing M. parornata to be a separate species from M. ornata .

Figures

Figure 21. Thai distribution of Megachile (Callomegachile) parornata.

Figure 22. Megachile (Callomegachile) parornata Chatthanabun, Warrit and Ascher, nom. nov., female a frontal view b labrum and mandibles c mandible d dorsal view e spine on hind tibia f spine on front tibia g dorsal view of metasoma h lateral view of metasoma and scopa.