Couplets: 1  2  3  4  5  6  7  8  9  10  

Key to Larvae of Holarctic Blephariceridae: Couplet 3(2)

Antennae with three segments; body of characteristic shape, abdominal divisions not tapering laterally, more-or-less contiguous with one another...Horaia Tonnoir	Antennae with two segments; body shape variable but abdominal divisions always tapering laterally, with wide spaces between adjacent divisions...Apistomyia Bigot