FIGURES 39–43. Thremma spp., final instar larvae. 39–42, Thremma gallicum McLachlan 1880 in Discriminatory matrix for the larvae of the European Thremma species (Trichoptera: Thremmatidae)

FIGURES 39–43. Thremma spp., final instar larvae. 39–42, Thremma gallicum McLachlan 1880, final instar larva: 39, case, ventral; 40, case, dorsal; 41, case, right lateral; 42, case, posterior, showing silken membrane with ovoid foramen. 43, Thremma tellae González 1978, final instar larva: head, frontal. Scale bars: 0.5 mm (except Fig. 42: 0.2 mm).