Classification

Aphidinae: Aphidini

Diagnosis

The aphid is dark grey to black with white transverse bands marked out by wax, found in large colonies in the central whorl of leaves during the initial infestation stages, but later spreads to the leaf surface. Antennae and siphunculi short. Body 1.5-1.7x as long as antennae. Processus terminalis 1.5-1.6x longer than base of last antennal segment. Siphunculi darker than cauda, which is dusky with 15-20 hairs.

Distribution

India: Meghalaya; Karnataka; Tamil Nadu. Mediterranean region excepting Africa.

Host plant(s)

Poaceae: Arundo donax Georgi.

Measurements

Aptera: Length of body 1.57, width 0.90; antennae 0.91, segments III: IV: V: VI 0.26: 0.16: 0.13: (0.09+0.16); u.r.s. 0.09; h.t.2 0.03; siphunculus 0.10; cauda 0.12.
Alata: Length of body 1.49, width 0.89; antennae 0.89, segments III: IV: V: VI 0.22: 0.13: 0.14: (0.10+0.18); u.r.s. 0.10; h.t.2 0.03; siphunculus 0.11; cauda 0.14.

Seasonal occurrence

Almost throughout the year.

Natural enemies

Coleoptera: Coccinellidae: Coccinella transversalis F., Oenopia sauzeti Mulsant.

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	Habitus