Studies of Neotropical Caddisflies, Lxi: New Species of Leptonema GuéRin (Trichoptera: Hydropsychidae)

Description of the immature stages of Leptonema tridens (Insecta: Trichoptera: Hydropsychidae) from southeastern Brazil with notes on its biology

“…Larvae and pupae were attached to the rock substrate in moderately to fast flowing water. The larval and pupal morphological terminology follows FLINT & WALLACE (1980) and WIGGINS (1996WIGGINS ( , 2004. The immature forms were associated with adults using the metamorphotype method, which relies on the collection of a pharate male within the pupal case or shelter (MILNE 1938, WIGGINS 1996.…”

“…It can be distinguished from L. columbianum and L. insulanum Banks, 1924 by the rodlike setae of the labrum (except at median line, which is glabrous). In these species the labrum is covered by many pale fine setae, lacking a glabrous area (FLINT 1964, FLINT & WALLACE 1980. Leptonema tridens can also be distinguished from L. columbianum by having a fore coxa without a forked digitate process on its anterior margin (FLINT & WALLACE 1980).…”

“…In these species the labrum is covered by many pale fine setae, lacking a glabrous area (FLINT 1964, FLINT & WALLACE 1980. Leptonema tridens can also be distinguished from L. columbianum by having a fore coxa without a forked digitate process on its anterior margin (FLINT & WALLACE 1980). In the description of the probable larva of L. poeyi (Banks, 1938) the forecoxa bears two short spines on a conical protuberance and two or three longer spines on the ridge proximally to this protuberance (BOTOSANEANU 1994).…”

“…Nevertheless, few species have their immature stages associated with the corresponding male adults. Larvae of New world Leptonema species have been described by MÜLLER (1921), FLINT (1964FLINT ( , 1968, FLINT &WALLACE (1980), andBOTOSANEANU (1994), whereas larvae of Old World species have been described by MARLIER (1961MARLIER ( , 1962 and SCOTT (1983).…”

Larvas de Synoestropsis sp. (Trichoptera: Hydropsychidae) são predadoras?

“…essas estruturas são: primeiro par de pernas robusto (com fêmur expandido e diversas cerdas rígidas na face interna), fêmur junto com tíbia e tarso formando uma estrutura preênsil (Figuras 1 e 2), cabeça afilada, mais longa que larga, mandíbulas fortes e pontiagudas (Figuras 1 e 3) e ausência de escova de cerdas no labro (presente em outros gêneros de Hydropsychidade filtradores como Macrostemum, Leptonema e Smicridea). estas características associadas ao comportamento de vida livre sugerem hábito alimentar predador para as larvas do gênero Synoestropsis, semelhante à larva de Plectromacronema que também é indicada como predadora (Flint, 1983).…”