Page:Travels in West Africa, Congo Français, Corisco and Cameroons (IA travelsinwestafr00kingrich).pdf/783



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Eumenes melanosoma, Smith, MS., nec. Sauss.

Long. corp, 15-17 millim.; exp. al. 25-27 millim.

Head black above, the points of the angles within the eyes yellowish; antennæ ferruginous, black above; face ferruginous, very long, beak-like, sometimes yellow, only the mandibles and a space at the base of the clypeus remaining ferruginous. Prothorax red, with a large triangular black spot nearly filling up the hinder angles on each side; mesothorax black; tegulæ large, black, bordered outside with reddish; scutellum black, a short yellow dash running from its extremity between the base of the wings; postscutellum black, with a yellow dot on each side; metathorax black, deeply sulcated in the middle, and forming two long triangles, the points reddish, into which runs an oblique lateral yellow line. Pectus black, red towards the sutures. Petiole and abdomen black, shining, and much more finely punctured than the thorax; petiole rufous beneath and bordered behind above with a pale yellow line. First segment of abdomen bordered behind above with a yellow line, widely interrupted in the middle. Legs rufous, front (and sometimes middle) tibiæ lined with yellowish; tarsi clothed with greyish pubescence, and the four hinder legs more or less blackish above. Wings iridescent purplish subhyaline.

Agrees very closely with the description and figure of the Javan E. melanosoma, Sauss. but appears to be distinct. Specimens in the British Museum from Sierra Leone were labelled E. melanosoma by the late F. Smith. The species belongs to the group of E. æthiopica, Sauss.

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Synagris dentata, Sauss. Études Fam. Vesp. i. p. 80, pl. xiii. fig. 3 (1852).

A common African species.