Lepidostoma

Karaouzas, Ioannis & Waringer, Johann, 2016, The larva of Lepidostoma doehleri Malicky 1976 (Trichoptera: Lepidostomatidae) with notes on ecology and a key to larvae for species of the genus in Greece, Zootaxa 4189 (3), pp. 588-592 : 591

Key to the final instar larvae of Lepidostoma species in Greece

1 Anterior margins of mesonotal sclerites each with>20 median setae ( Fig. 8 ) ................................................................................2

- Anterior margin of each mesonotal sclerite with only one median seta ............................ Lepidostoma hirtum (case: Fig. 10 , right)

2 Each metanotal lateral sclerite with more than 15 setae ( Fig. 9 , arrow); posterior margin of each mesonotal sclerite with 10 or more setae ( Fig. 8 , arrow); case with round cross section, constructed of sand grains ( Fig. 10 , left) ................. Lepidostoma basale

- Each metanotal lateral sclerite with less than 10 setae ( Fig. 5 ); posterior margin of each mesonotal sclerite with 6–7 setae ( Fig. 4 ); case of final instar larva with quadrangular cross section, consisting of detrital and plant fragments ( Fig. 1 ) ................................. .......................................................................................................................................................................... Lepidostoma doehleri

Figures

FIGURES 8 – 10. Lepidostoma spp., 5 th instar larvae. 8, Lepidostoma basale, thorax, dorsal (arrow: setal group along posterior mesonotal margin). 9, L. basale, right lateral (arrow: lateral metanotal sclerite). 10, left: L. basale larva and case, right: L. hirtum larva and case. Scale bars = 1 mm

FIGURES 1 – 7. Lepidostoma doehleri, 5 th instar larva. 1, larval case. 2, head and frontoclypeal apotome, dorsal. 3, head, ventral. 4, pronotum, mesonotum, and metanotum, dorsal. 5, prothorax, mesothorax, and metathorax, right lateral. 6, abdominal segment 9, anal legs and claws, dorsal. 7, abdominal segment 9, anal legs and claws, ventral.