Chalicodoma (Alocanthedon) atratiforme

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Taxonavigation

Genus: Chalicodoma

Name

Chalicodoma atratiforme (Meade-Waldo) comb. n. – Wikispecies link – Pensoft Profile

• Megachile atratiformis Meade-Waldo 1914: 456.

Additional material

Malaysia (Peninsular): 3♀♀, Pahang, Batu Balai Estate, 18 March 1927, E. Seimund, Ex F.M.S. [Federated Malay States] Museum (NHML); 1♂, 1♀, Negri Sembilan, Gunong Angsi, 2000–2790’ [feet], April 1918, Ex F.M.S. [Federated Malay States] Museum (NHML).
Thailand: 1♀, Uthai Thani Province [western Thailand], Huay Kha Khaeng Wildlife Sanctuary, 15º36’ N, 99º20’ E, 1.xi.1995 [1 November 1995], J. Gazhoul, captured at Dipterocarpus obtusifolius Teijsman & Miquel (Dipterocarpaceae), D.B. & M.W. Baker Collection (SEMC); 1♀, 150 n.w. Bangkok, Huay Kha Khaeng, 5.xi.1995 [5 November 1995], J. Ghazoul (NHML).

Diagnosisn

The female of this species can be recognized by the clypeus lacking a medioapical tubercle, short mandibles (Fig. 45), labrum with an apical fringe of erect setae running along relatively straight apical margin, and the yellow wings (Fig. 44). The male can be recognized by the dense setal patch in forewing medial cell, tergum VI with shallow medioapical concavity on preapical carina, protibia with outer, apical surface not depressed, and genitalia as in figures 32–34.

Remarks

It should be noted that Meade-Waldo’s (1914) material from “Middle Tenasserim” is not conspecific with his type (B.M. Type Hym.17a2037) for Chalicodoma atratiforme and are actually specimens of Chalicodoma odontophorum. Additionally, despite Cockerell’s (1927) assignment of the subspecies Chalicodoma atratiforme sininsulae (Cockerell) (Type USNM 70455; ♀; Turtle Island [Koh Tao], Gulf of Siam; visum) to Meade-Waldo’s species, his female has nothing whatever to do with Chalicodoma atratiforme and is instead a synonym of Callomegachile (Callomegachile) fulvipenne (Smith 1879) (syn. n.).

Key to Species of Alocanthedon

Note: The female of Chalicodoma apoicola is unknown.

Key to Species of Alocanthedon — M. Engel , V. Gonzalez

1		Forewing either largely hyaline with fuscous apex (Figs. 35, 41) or entirely dark fuscous (Fig. 10), with dark brown to black venation; preapical carina of male tergum VI with deep medioapical concavity (Figs. 10, 40); outer, apical surface of male protibia distinctly depressed    2
–		Forewing yellow, like parchment, with smoky fuscous or grayish hyaline apex (Figs. 1, 7, 17, 23, 44), with ferruginous to orange-yellow venation; preapical carina of male tergum VI with shallow medioapical concavity (Figs. 6, 22); outer, apical surface of male protibia faintly or not depressed    3
2	(1)	Male clypeal disc largely exposed, not obscured by dense, appressed setae (Fig. 36); procoxal spines broad, oblique procoxal lamella long, distance from lamella to outer basal corner of procoxa shorter than lamella length; anterior border of outer surface of protibia with thin fringe of short, erect, black setae; protarsi as in figure 38; terga with faint to absent transverse ridges on non-depressed, postgradular discs; apical margin of second metasomal sternum straight, not produced medially; size moderate (17–22 mm) [Sulawesi]    Chalicodoma aterrimum (Smith)
–		Male clypeal surface largely obscured by dense, long, appressed, reddish setae (Fig. 12); procoxal spines more slender, elongate, oblique procoxal lamella short, distance from lamella to outer basal corner of procoxa slightly longer than lamella length; anterior border of outer surface of protibia with dense fringe of long, erect, slightly wavy, black setae; protarsi as in figure 14; terga with strong transverse carinae or ridges on non-depressed, postgradular discs; apical margin of second metasomal sternum with broad, short, medioapical extension; size very large (nearly 25 mm) [Mindanao, Philippines]    Chalicodoma apoicola Engel sp. n.
3	(1)	Female clypeus with pronounced, erect, medioapical tubercle (Fig. 8); female mandibles elongate (Fig. 8); apical fringe of erect setae on labrum separated from labral apical margin by at least one median ocellar diameter or slightly more, apical margin of labrum medially convex; male clypeus densely covered by long, appressed, apically-directed setae, obscuring integument, face with dense setae outside of antennal toruli tawny or white (Fig. 2); male protarsus as in figure 5 [Thailand, Myanmar]    Chalicodoma odontophorum Engel sp. n.
–		Female clypeus without medioapical tubercle; female mandibles short (Figs. 25, 45); apical fringe of erect setae on female labrum running along labral apical margin (separated by less than a median ocellar diameter), apical margin relatively straight; male clypeal disc largely exposed, setae on face outside of antennal toruli largely black or tawny to white only near clypeus (Fig. 18); male protarsus not as in figure 5    4
4	(3)	Female mesoscutum with pronounced transverse wrinkling on disc, posteriorly with well-defined coarse punctures separated by a less than a puncture width, punctures irregular, not loosely arranged in transverse series like those in wrinkles (Fig. 25); male forewing without patch of dense setae in forewing medial cell (Figs. 17, 20); male genitalia as in figures 29–31 [Peninsular Malaysia]    Chalicodoma memecylonae Engel sp. n.
–		Female mesoscutum with central wrinkling of integument less pronounced, posteriorly with ill-defined, somewhat transverse punctures separated by a puncture width or more and loosely in transverse rows like weak wrinkles on disc (Fig. 46); male forewing with dense patch of black setae in forewing medial cell; male genitalia as in figures 32–34 [Peninsular Malaysia, Thailand]    Chalicodoma atratiforme (Meade-Waldo)

Taxon Treatment

• Engel, M; Gonzalez, V; 2011: Alocanthedon, a new subgenus of Chalicodoma from Southeast Asia (Hymenoptera, Megachilidae) ZooKeys, 101: 51-80. doi

Images

Figures 1–6. Photomicrographs of male of Chalicodoma (Alocanthedon) odontophorum Engel, sp. n. 1 Dorsal habitus 2 Facial aspect 3 Dorsal aspect of mesoscutum and mesoscutellum 4 Detail of forewing medial cell 5 Protarsus, pro-pretarsus, and protibia 6 Dorsal aspect of metasomal terga V and VI.  Figures 7–9. Photomicrographs of female of Chalicodoma (Alocanthedon) odontophorum Engel, sp. n. 7 Dorsal habitus 8 Facial aspect (with expanded detail of clypeus, arrow indicating medioapical tubercle) 9 Dorsal aspect of mesoscutum and mesoscutellum.  Figures 10–14. Photomicrographs of male of Chalicodoma (Alocanthedon) apoicola Engel, sp. n. 10 Dorsal habitus 11 Detail of forewing medial cell 12 Facial aspect 13 Dorsal aspect of mesoscutum and mesoscutellum 14 Protarsus, pro-pretarsus, and apex of protibia.  Figures 17–22. Photomicrographs of male of Chalicodoma (Alocanthedon) memecylonae Engel, sp. n. 17 Dorsal habitus 18 Facial aspect 19 Lateral aspect of head, arrow indicates postgenal flange, note also broad, medial inferior protuberance of male mandible 20 Detail of forewing medial cell 21 Protarsus, pro-pretarsus, and apex of protibia 22 Dorsal aspect of metasomal terga V and VI.  Figures 23–25. Photomicrographs of female of Chalicodoma (Alocanthedon) memecylonae Engel, sp. n. 23 Dorsal habitus 24 Facial aspect 25 Dorsal aspect of mesoscutum and mesoscutellum.  Figures 26–34. Photomicrographs of representative male genitalia for species of Alocanthedon Engel and Gonzalez, subgen. n. in ventral, lateral and dorsal aspects 26–28 Chalicodoma (Alocanthedon) odontophorum Engel, sp. n. 29–31 C. (A.) memecylonae Engel, sp. n. 32–34 C. (A.) atratiforme (Meade-Waldo).  Figures 35–40. Photomicrographs of male of Chalicodoma (Alocanthedon) aterrimum (Smith) 35 Dorsal habitus 36 Facial aspect 37 Dorsal aspect of mesoscutum and mesoscutellum (small portion of first metasomal tergum also visible) 38 Protarsus, pro-pretarsus, and apex of protibia 39 Detail of forewing medial cell 40 Dorsal aspect of metasomal terga V, VI, and apical portion of IV.  Figures 41–43. Photomicrographs of female of Chalicodoma (Alocanthedon) aterrimum (Smith) 41 Dorsal habitus 42 Facial aspect 43 Dorsal aspect of mesoscutum and mesoscutellum.  Figures 44–46. Photomicrographs of female of Chalicodoma (Alocanthedon) atratiforme (Meade-Waldo), comb. n. 44 Dorsal habitus 45 Facial aspect 46 Dorsal aspect of mesoscutum and mesoscutellum.