Which characteristic distinguishes the yellow pecan aphid (Monelliopsis pecanis) from Aphis nerii?

Answer

Presence of long setae sticking out at sharp angles

Distinguishing between different yellow aphids found in pecan groves requires examining specific morphological features beyond general coloration. While both the Oleander aphid and species within the Yellow Aphid Complex are yellow with black markings, the yellow pecan aphid, *Monelliopsis pecanis*, is specifically characterized by the presence of long setae, or hairs, that project outward from its body at sharp angles. This feature imparts a unique, somewhat 'pincushion' appearance to *M. pecanis*, which is not a trait associated with the Oleander aphid, *Aphis nerii*. Furthermore, the presence of red eyes in the yellow pecan aphid serves as an additional distinguishing factor during scouting.

Which characteristic distinguishes the yellow pecan aphid (Monelliopsis pecanis) from Aphis nerii?

Related Questions

What color are the legs, antennae, and siphunculi of wingless Aphis nerii?Which characteristic distinguishes the yellow pecan aphid (Monelliopsis pecanis) from Aphis nerii?What reproductive terms describe A. nerii's method of rapid colony growth?What type of potent defensive compounds do Oleander aphids incorporate from oleander and milkweeds?What visible consequence results from the aphids excreting excess honeydew on leaves?What is the result when the parasitic wasp Lysiphlebus testaceipes targets an immature A. nerii?Where does the black margined aphid (M. caryella) primarily feed on pecan leaves?Which two primary plant families show a strong host preference for the Oleander aphid, Aphis nerii?What color markings characterize the head and thorax of winged A. nerii adults (alatae)?Why must pecan growers rotate insecticides according to Mode-of-Action Group Numbers?What term describes the bright yellow coloration of A. nerii when used as a warning signal to predators?
insectpestyellowAphid