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Catalogue of the dipterous insects collected at Singapore and Malacca cover

Catalogue of the dipterous insects collected at Singapore and Malacca

Chapter 35: Gen. Anthrax, Fabr.
By Alfred Russel Wallace
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About This Book

A systematic catalogue of dipterous insects collected at Singapore and Malacca, listing families, genera, and species with concise morphological descriptions, measurements, and precise collection localities. Entries note diagnostic characters, colouration, and intraspecific variation, and record altitudinal and geographic occurrences when known. Numerous taxa are described as new, accompanied by comparative remarks and occasional figures or plates to aid identification, while brief comments indicate wider distributional links to specimens from neighboring islands and regions.

Fam. BOMBYLIDÆ, Leach.

Gen. Anthrax, Fabr.

48. Anthrax degenera, n. s., mas et fœm. Nigra, pectore albido, abdominis lateribus ferrugineis, ventre testaceo, alis subcinereis, pedibus basi testaceis. Mas. Alis basi et apud costam nigro-fuscis. Fœm. Alis plus dimidio basali nigro-fuscis.

Male and Female. Dull black. Head not broader than long. Antennæ small; 3rd joint short-conical; arista somewhat longer than the 3rd joint. Pectus whitish. Abdomen blackish-brown, ferruginous on each side, testaceous beneath. Legs long, slender. Wings greyish; veins black; radial vein curved towards its tip; fore fork of the cubital undulating, parallel to the radial, forming near its base an obtuse angle which emits the stump of a vein; hind fork straight; three nearly straight externo-medial veins; 2nd connected with the 3rd by an undulating and very oblique veinlet; subanal vein near the anal on the border. Halteres testaceous.—Male. Hind femora testaceous towards the base; anterior femora dark testaceous. Wings blackish-brown at the base and along the costa.—Female. Hind femora testaceous with black tips; anterior femora paler testaceous. Wings blackish-brown for much more than half the length from the base. Length of the body 3½ lines; of the wings 10 lines.

Singapore.