Observations on Scale-insects (Coccidae)—IV

Abstract

Llaveia abrahami, sp. nov.Female, adult. Ovate, strongly gibbose above and flattened beneath; segmentation both on the dorsum and venter distinct. Colour, in alcohol, buff-yellow; with a thin deposit of white secretion in the hollows between the segments; legs and antennae yellowish brown. It is highly probable that much of the secretion had disappeared in the alcohol in which the specimens were preserved. Antennae of eleven segments, 2nd and 11th longest; 3rd a little shorter than the latter, but much longer than the succeeding ones, which are submoniliform in shape; average length 0·8–0·9 mm. Legs relatively short; tarsi a little more than half the length of the tibiae; front pair shortest, measuring 0·85 mm.; posterior pair longer, measuring 1–1·1 mm.; hairs relatively long and slender; claws simple, though in one example two of these organs have a well-marked tooth-like projection dorsally, just above the curved tip. Derm both dorsally and ventrally rather thickly set with very short fine hairs; margin with a narrow band of long fine hairs, the longest of which measure 0·6–0·7 mm. Pores dorso-ventrally relatively very small, circular and with beaded rims; these are less numerous than the fine hairs; those at the margins are slightly larger, much more numerous, and many have clear triangular-shaped centres. Anal segment of abdomen with three large ovate rings, the central one being slightly the largest and measuring about 0·2 mm. in its longest axis. Length, after maceration in KOH, 8–9 mm.