Coelioxys (Hemicoelioxys) Pasteels, 1968

Rocha Filho, Léo Correia Da & Packer, Laurence, 2017, Phylogeny of the cleptoparasitic Megachilini genera Coelioxys and Radoszkowskiana, with the description of six new subgenera in Coelioxys (Hymenoptera: Megachilidae), Zoological Journal of the Linnean Society 180 (2), pp. 354-413 : 403

= Coelioxys (Hemicoelioxys) Pasteels, 1968 .

Type species: Coelioxys apicata Smith, 1854 .

Diagnosis: Species of the subgenera C. (Liothyrapis) and C. (Torridapis), as well as C. (Allocoelioxys) madagascariensis are the only ones within Coelioxys with bare eyes ( Fig. 4 ). The species C. madagascariensis is differentiated from C. (Liothyrapis) spp. by the sharply carinate lateral margins of the axilla ( Fig. 6 ). The most easily observed characteristics that separate C. (Liothyrapis) spp. from C. (Torridapis) are [alternative conditions in C. (Torridapis) are given in parentheses]: axilla short, free apical portion not produced beyond posterior margin of mesoscutellum (Figs 7, 8) (long, free apical portion produced beyond posterior margin of mesoscutellum; Fig. 11 ); T 6 in females ending in a long spine-like process, with some long, erect hairs subapically ( Fig. 9 ) ( T 6 ends in a very short, obsolescent spine-like process and lacks long, erect hairs subapically; Fig. 12 ), and S 6 in females broad and constricted medially, bearing a dense fringe marginally ( Fig. 9 ) (S6 very elongate, never constricted medially and lacking a dense fringe on lateral margins; Fig. 12 ).

Comments: This subgenus is mostly Afrotropical, with some species in the Indomalayan region and others in the Palaearctic. Additionally, one species, C. apicata , has been introduced into Puerto Rico ( Genaro & Franz, 2008). There are at least 24 species assigned to C. (Liothyrapis) ( Ascher & Pickering, 2015). The Afrotropical fauna was revised by Pasteels (1968).

List of species: Coelioxys aberrans Morawitz, 1894 , Coelioxys albociliata Pasteels, 1968 , C. apicata , Coelioxys bruneipes Pasteels, 1968 , Coelioxys calabarensis Pasteels, 1968 , Coelioxys cavigena Pasteels, 1968 , Coelioxys cherenensis Friese, 1913 , Coelioxys chionospila Cockerell, 1935 , Coelioxys circumscripta Schulz, 1906 , C. decipiens , Coelioxys dormitans Cockerell, 1919 , Coelioxys elongativentris ( Pasteels, 1977) , Coelioxys gracillima ( Pasteels, 1977) , Coelioxys heterozona Cockerell, 1939 , Coelioxys integra Pasteels, 1968 , Coelioxys junodi Friese, 1904 , Coelioxys lativentris Friese, 1909 , Coelioxys luangwana Cockerell, 1939 , Coelioxys neavei Vachal, 1910 , Coelioxys reticulata Pasteels, 1968 , Coelioxys rotundicauda Cockerell, 1935 , Coelioxys rotundiscutum ( Pasteels, 1977) , Coelioxys scioensis Gribodo, 1879 , Coelioxys umbripennis Friese, 1922 , and Coelioxys verticalis Smith, 1854 .

Figures

Figures 4 and 5. Female. Frontal view of head (for compound eye): 4, Coelioxys weinlandi; 5, Coelioxys zapoteca. Scale bars: 1.5 mm.

Figures 6 and 7. Female. Dorsal view of mesoscutellum (for lateral margin of axilla): 6, Coelioxys madagascariensis; 7, Coelioxys verticalis. Scale bars: 1.5 mm.

Figures 8–13. 8, 9, female, Coelioxys apicata: 8, dorsal view of mesoscutellum; 9, dorsal view of T6 and S6. 10, male, Coelioxys decipiens: dorsal view of T6 (for lateral tooth of T6). 11, female, Coelioxys ducalis: dorsal view of mesoscutellum. 12, 13, Coelioxys weinlandi: 12, female, dorsal view of T6 and S6; 13, male, dorsal view of T6 (for lateral tooth of T6). Scale bars: 1.5 mm.