Catalog of the Hydroptilidae (Insecta, Trichoptera)

Abstract

The microcaddisfly (Trichoptera: Hydroptilidae) fauna is catalogued from a review of more than 1,300 literature citations through the end of 2020 to include 2,665 currently recognized, valid species in six subfamilies and 76 genera. Fourteen subspecies are included in the total as well as 23 fossil species and three fossil genera. The family Ptilocolepidae (Trichoptera), also covered in this catalogue, comprises 19 valid species in two genera; two subspecies and two fossil species are included in the total. The monotypic genus Eutonella, currently considered incertae sedis within Trichoptera, was formerly placed in Hydroptilidae and is also included in this catalogue. Genus-group and species-group synonyms are listed. Information on the type locality, type depository, sex of type, distribution by country, and other relevant taxonomic or biological information is included for each nominal species. Summary information on taxonomy, phylogeny, distribution, immature stages, and biology are provided for each subfamily, tribe, and genus where known. An index to all nominal taxa is provided to facilitate catalog use.

The Trichoptera of Panama XXIII. Two New Microcaddisfly Species (Trichoptera: Hydroptilidae)

“…Male genitalia were soaked in 5% KOH overnight, and washed in weakly acidified alcohol prior to examination under a dissecting scope. Morphological terminology used for male genitalia generally follows that of Marshall (1979) and classification within the Hydro-ptilidae follows Thompson (2023). Altitude values are given in meters above sea level (m a.s.l.).…”

First Records of the Microcaddisfly Genus Metrichia Ross, 1938 (Trichoptera: Hydroptilidae) in Brazilian Amazonia: Three Remarkable New Species and a Checklist from Brazil

“…Hydroptilidae, or microcaddisflies, is the largest trichopteran family with about 2,600 species and consist of six subfamilies (Thomson 2023), all occurring in the Neotropical region: Hydroptilinae Stephens, 1836, Leucotrichiinae Flint, 1970, Neotrichiinae Ross, 1956, Ochrotrichiinae Marshall, 1979, Orthotrichiinae Nielsen, 1948, and Stactobiinae Botosaneanu, 1956 (Holzenthal and Calor 2017).…”

“…Currently, nine genera are included in Ochrotrichiinae (Thomson 2023): Angrisanoia Özdikmen, 2008, Caledonotrichia Sykora, 1967, Dibusa Ross, 1939, Maydenoptila Neboiss, 1977, Metrichia Ross, 1938, Nothotrichia Flint, 1967, Ochrotrichia Mosely, 1934, Ragatrichia Oláh & Johanson, 2011, and Rhyacopsyche Müller, 1879. Metrichia is the second most species-rich genus of the subfamily, comprising 141 species exclusively from the New World and distributed mainly in Central America (Holzenthal and Calor 2017, Mey and Ospina-Torres 2018, Thomson and Armitage 2018, 2021, Harris and Armitage 2019, Armitage and Harris 2020).…”

Assessing molecular phylogenetics of Hydroptilidae (Trichoptera) subfamily lineages, with notes on biogeography

“…We aim to determine how molecular phylogenetic analysis can help resolve the subfamily relationships within the caddisfly family Hydroptilidae, the “microcaddisflies.” For several decades (until recent work published by Thomson et al, 2022), the most prominent family-level phylogeny of Hydroptilidae was constructed with morphological characters by Marshall (1979). Since then, many species and genera have been described within the family (Morse, 2023; Thomson, 2023). Intensive molecular phylogenetic work has been done within one subfamily, Leucotrichiinae (Santos et al, 2016), though a thorough treatment of each of the other subfamilies is still needed.…”

“…We also relate biogeography and species diversity to the phylogenetic analysis of the subfamily lineages to assess whether certain lineages are concentrated in particular parts of the world. Hydroptilidae is the most diverse family of Trichoptera, with over 2000 species and a worldwide distribution (Morse, 2023; Thomson, 2023); relating biogeographical occurrences to phylogenetic analyses may indicate spatial patterns of Hydroptilidae evolution. Here, we present preliminary analyses using publicly available data on GenBank (NCBI, 2021).…”