Dioxybracon bimucronatus, Grangeri 1949

Quicke, Donald L. J., Villemant, Claire & Butcher, Buntika A., 2019, The Afrotropical braconine genus Dioxybracon Granger with descriptions of four new species and new generic synonymy, Journal of Natural History 53 (27), pp. 1673-1689 : 1675-1677

D. bimucronatus Grangerı 1949

( Figure 1 )

Type locality

Lectotype female: ‘ MADAGASCAR: Bekyli , Reg. sud de l ’ île ’, ‘ MUSEUM PARIS, xi.1936, A. Seyrig ’ and ‘ MNHN, Paris, EY 19195 ’.

Paralectotypes. 1 female, same data as lectotype and ‘ MNHN, Paris, EY 19196 ’; 1 female, same data as lectotype except, iii .1934 and ‘ MNHN, Paris, EY 19197 ’.

Additional material. 1 female: ‘ ALDABRA: South Island , Cinq Cases . 3 – 16.i.1968, B. Cogan & A. Hutson ’ and ‘ Aldabra Atoll . Royal Society Expedition, 1967 – 68. B.M. 1968 – 333 ’ ( BMNH); 1 female: ‘ ALDABRA: I . le Michel, 15-ii.1968, B. Cogan & A. Hutson ’ and ‘ Aldabra Atoll . Royal Society Expedition, 1967 – 68. B.M. 1968 – 333 ’ ( BMNH).

Diagnosis. D. bimucronatus can be distinguished from all other Dioxybracon species in lacking extensive mesopleural sculpture, striate sculpture on frons and submedial mesoscutal grooves, hind coxa without dorsal spine, lateral lamella of metasomal tergites 1 – 3 narrow, without emargination or strong expansion at level of tergite 3, posterior margin of tergite 6 narrowly and more or less deeply emarginate medially.

Male. Unknown.

Host. Unknown.

Distribution. Afrotropical and Oceanic ( Madagascar and Aldabra).

Variation and comments. Very little variation was noted between specimens. The two specimens from Aldabra differ in having the scapus black laterally but brownish medially, pedicellus brownish apically and flagellum slightly paler. This difference does not seem sufficient to warrant separate species status for the Aldabra specimens.

Figures

Figure 1. Dioxybracon bimucronatus Granger. (a) habitusı dorsal viewı lectotype; (b) habitusı lateral viewı paralectotype; (c) faceı paralectotype; (d) head and mesosomaı dorsal viewı paralectotype; (e) metasomaı dorsal viewı paralectotype; (f) metasomaı lateral viewı paralectotype; (gıh) lectotype and paralectotype (EY19196) labels.