(Left to Right) Appearance of Immatures: First instar (planidium larva) has legs, high mobility and (2nd instar Larva) Successive instars are legless and grub-like with reduced mouthparts. Appearance of Adults: (Females) remain larviform, legless and wingless, partially projecting from host’s abdomen. (Males) emerge with adult-like body; Large fan-shaped hind wings; small club-like front wings; Reduced mandibulate mouthparts; Antennae 4- to 7-segmented; often with lateral branching