Classification

Aphidinae: Macrosiphini

Common name(s)

Cabbage aphid

Diagnosis

Apterae medium-sized, greyish-green or dull green, with dark head and dark dorsal thoracic and abdominal markings, body covered with greyish-white mealy wax which is also secreted on to the surface of the plant and extends throughout the colony. Alatae with dark head and thorax and black transverse bars on dorsal abdomen. Antennae 0.6-0.65 times as long as body length. Siphunculi barrel shaped, dark.

The aphid is frequently found in association with M. persicae and L. erysimi on different host plants; however, it can be easily segregated by the presence of mealy covering on the body.

Host plant(s)

Brassicaceae: Brassica juncea (L.), Brassica oleracea L. var. capitata, Brassica campestris L., Brassica oleracea L. var. botrytis, Brassica oleracea L. var. gongyloides, Raphanus sativus L.; Capparidaceae: Gynandropsis pentaphylla (L.) DC.

Measurements

Aptera: Length of body 2.44, width 1.48; antennae 1.49, segments III: IV: V: VI 0.49: 0.16: 0.14: (0.11+0.36); u.r.s. 0.13; h.t.2 0.17; siphunculus 0.17; cauda 0.19.
Alata: Length of body 2.29, width 1.04; antennae 1.94, segments III: IV: V: VI 0.66: 0.13: 0.24: (0.12+0.49); u.r.s. 0.10; h.t.2 0.18; siphunculus 0.12; cauda 0.13.

Seasonal occurrence

December - March.

Natural enemies

Coleoptera: Coccinellidae: Adalia tetraspilota (Hope), Anegleis cardoni (Weise), Cheilomenes sexmaculata (F.), Coccinella septempunctata L., C. transversalis F., C. undecimpunctata L., Harmonia dimidiata (F.), H. eucharis (Mulsant), Hippodamia variegata (Goeze), Oenopia kirbyiMulsant, O. sauzeti Mulsant, O. sexareata (Mulsant), Propylea japonica (Thunberg), Nephus regularis Sicard, and Scymnus (Pullus) xerampelinus Mulsant; Diptera: Syrphidae: Eupeodes confrater (Wiedemann), Ischiodon scutellaris (F.), Episyrphus balteatus (De Geer), Sphaerophoria sp., Xanthogramma sp.; Hymenoptera: Aphelinidae: Aphelinus asychis (Walker), A. albipodus Hayat & Fatima; Braconidae: Aphidiinae: Aphidius matricariae Haliday, Diaeretiella rapae (M'Intosh), Ephedrus lacertosus (Haliday), Trioxys brevicornis (Haliday), T. rubicola Shujauddin.

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	Habitus