What color are the legs, antennae, and siphunculi of wingless Aphis nerii?
Answer
Dusky or black
The Oleander aphid, specifically the wingless adult female form commonly observed, possesses a striking bright lemon yellow body color. However, its appendages—including the legs, the antennae responsible for sensory input, and the siphunculi, which are the twin tubes located near the rear of the abdomen used for excreting substances—are distinctly colored dusky or black. This high contrast marking is a key feature aiding in the identification of this species, even without specialized entomological knowledge.
Related Questions
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