S. maydis

Sipha (Rungsia) maydis Passerini, 1860

Brown corn aphid

Morphological characters

1.0-2 mm.
Apterous: glossy brown, with numerous hairs all over the body.
Alate: brown with hairs, antennae short with 5 segments; large black patch on hind-parts of abdomen; tiny cornicles, reduced to a pore, cauda rounded.

Life cycles


Host plants


Particular characteristics

S. maydis is not very frequent.
Colonies are visited by ants.

Agronomic impact

S. maydis colonizes young shoots near base and sometimes stems and inflorescences. The leaves go yellow, roll up, then dry up.

Natural enemies

Parasitoids :
  • Adialytus ambiguus

Modification date: 23 May 2024 | Publication date: 08 November 2010 | By: Evelyne Turpeau, Maurice Hullé, Bernard Chaubet