Ceratovacuna perglandulosa

Adult apterae of Ceratovacuna perglandulosa are pear-shaped, reddish brown or black, and covered in white wax (see first image below). The head has small, anteriorly-directed frontal horns (visible in second image below), bearing 4 fine short hairs. Antennae are 5-segmented, but in some specimens the division between segments III and IV is indistinct. The antennae are 0.16-0.18 times the body length, and have distinct spinulose imbrications on segments III, IV & V. The longest hairs on the antennae are as long as, or slightly longer than, the basal diameter of that segment. The rostrum hardly reaches the fore-coxae, with the apical rostral segment about 0.5 times the second hind tarsal segment. The head and thoracic sements are fused to form a cephalothorax. There are two lateral and one transverse group of wax glands on the posterior of the dorsum of the cephalothorax, and each of the mesothorax and metathorax have groups of marginal and spinal wax glands (cf. Ceratovacuna lanigera, which has no spinal wax glands on the thorax and tergites I-VI, only marginal ones). The dorsum of the abdomen has paired marginal wax glands on tergites I-VII, and spinal groups on tergites I-IV; spinal wax glands on tergites V-VII are fused into single transverse groups, and tergite VIII has a single median group. Siphunculi are pore-like, with a thin sclerotic area around the base, and the cauda is transversely oval with a basal constriction and 9-10 hairs. The body length of adult Ceratovacuna perglandulosa apterae is 1.8-2.2 mm.

Images above by permission, copyright Sunil Joshi & Poorani, J. Aphids of Karnataka (accessed 12/2/20).

Alatae of Ceratovacuna perglandulosa (see picture below) are dark brownish-black, with very little wax present - but we have so far been unable to find any description of alate viviparae.