Isogenus infuscatus. Newman

Newman, Edtward, 1845, Addendum to the " Synonymy of the Perlites, by Edward Newman, " published in the Mag. Nat. Histo. for 1839, The Zoologist: a monthly journal of natural history 3, pp. 852-854 : 852-853

Sp. 1. Isogenus infuscatus. Newman .

The antennae are about half as long as the body, rather slender, and composed of sixty-eight joints, which are so short and so closely compressed together, especially towards the base, that the sutures separating them are only perceptible under a lens of high power: the basal joint, which, in accordance with general structure, is much larger and stouter than the rest, is black; the remaining sixty-seven joints appear of a dingy-brown colour, paler beneath. The head is broad and flat, with very prominent lateral eyes, and three transparent ocelli: its colour is black, with a yellow patch on each side, surrounding the base of the antenna, and extending along the anterior margin of the eye. The prothorax is much narrower than the head; its transverse and longitudinal diameters nearly equal; but its posterior narrower than its anterior margin; both are straight. All the wings are opaque, and smoky-black, with the costal margin yellow: in the fore-wings, this yellow margin, occupying the space between the costal and subcostal nervure, is traversed by seventeen transverse nervures, twelve of which, nearest the base, are nearly direct, five towards the apex very oblique. The body is somewhat brown above, and dingy-yellow beneath. All the legs have the coxae and the basal portion (extending beyond the middle) of the femora yellow, the apical portion of the femora black; the protibiae are entirely black, the meso- and meta-tibiae black at the extremities, and yellow in the middle; all the tarsi are black. The caudal setae arc rather shorter and rather stouter than the antennae, slightly hairy, and composed of twenty-five joints; those nearest the base are very short, and closely united. The expansion of the wings is 1’75 inch.

Inhabits Hong Kong , China. Collected in that island, and presented to the British Museum collection, by John Charles Bowring, Esq., of Hong Kong .

Obs. This insect can scarcely be referred to Isogenus, as I ventured to restrict that genus in the paper to which this forms an addendum, and in which I described the present species from an imperfect specimen in the cabinet of the Rev. F. W. Hope.