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

Key to Larvae of Holarctic Blephariceridae: Couplet 2(1)

Antennae with 2 poorly delimited segments connected by elongate membranous area; ventral proleg with wide base, tapering to pointed apex...Blepharicera Macquart, Tianschanella Brodsky	Antennal segments distinctly separated by short connecting membrane; ventral proleg elongate, tapering only slightly to blunt apex...3