Fig. 4
From: Worker reproduction of the invasive yellow crazy ant Anoplolepis gracilipes
Morphological comparison between worker-produced and queen-produced offspring in A. gracilipes. a Male pupa from orphaned colony (left), worker pupa (middle) and male pupa from queenright colony (right); (b) external morphology of worker-produced male (left) and normal queen-produced male (right); (c) close up of external genital structure of worker-produced male (left) and queen-produced male (right); (d) internal organs of the male reproductive system of worker-produced male (left) and queen-produced male (right)