Aquatic Lepidoptera: family key Proleg with crochets forming Proleg with crochets in either: a mesoseries • circle or incomplete circle • ellipse or if an incomplete circle, crochets hook- • sometimes appearing as like transverse lines Crambidae Noctuidae Bellura • Larvae living in cases • Cases made of: leaves or plant material • Usually associated with lakes, Genera in NE Canada & US Acentria ponds, quiet water (no keys in Merritt et al & Peckarsky, except Bellura): • Bellura • Archanara • Simyra Parapoynx Genera in NE Canada & US (with keys in Merritt et al & Synclita Peckarsky): • Acentria • Elophila • Eoparargyractis • Langessa • Nymphula • Nymphuliella Petrophila • Parapoynx Elophila -based on keys and descriptions from Merrit, • Synclita Cummins & Berg (2008), Peckarsky (1990); by • Petrophila Michelle Dobrin, U of Windsor, 2017 Photos/diagrams of genera common in the Great Lakes area -based on keys and descriptions from Merrit, Cummins & Berg (2008), From Peckarsky 1990 Peckarsky (1990); by Michelle Dobrin, U Aquatic Lepidoptera: Crambidae of Windsor, 2017 (genus not keyed in Merritt et al 2008) no • No filamentous gills with filamentous • Crochets uniordinal Note: 1st instars filamentous gills or biordinal in circles without gills! gills • Spiracles on abdominal segments 2-4 twice as large as those on 1, 5-8 • Crochets in ellipse, • All gills unbranched, lateral sometimes appearing Nymphula as transverse lines • Head prognathous • Larvae living in cases • Body dorsoventrally flattened of plant material Prothorax: • lateral setae of T1 on ventral extension of prothoracic gills gills unbranched, shield branched uniformly distributed Prothorax: lateral setae • with a very large blackish of T1 not on prothoracic brown shield dorsally and Gills on A9 and shield with vestigial spiracles A10 extremely dense and long, Sphagnum bogs only forming a fan (Peckarsky 1990) Nymphuliella • Crochets triordinal (i.e. of 3 lengths) Crochets biordinal Petrophila Eoparargyractis (i.e. of 2 lengths) • Head and cephalic shield of prothorax with extensive pattern of brown bands on cream-coloured background Parapoynx (in live specimens only) Langessa Spiracles on abdominal crochets equal on both caudal cephalic segments 1-4 larger than crochets other spiracles (Peckarsky cephalic and caudal crochets side larger than larger than 1990) cephalic caudal Acentria Synclita Elophila Cephalic: towards the head end of the body Prognathous Hypognathous Caudal: towards the tail end of the body (long axis of the head is (long axis of the head is vertical i.e. at horizontal and in line with the right angle to the long axis of the long axis of insect body) body; mouthparts point downwards) General anatomy/structures of larval Lepidoptera.