Two new species of the rare Neotropical caddisfly genus Amphoropsyche Holzenthal (Trichoptera, Leptoceridae).

Ernesto Rázuri-Gonzales,Ralph W Holzenthal,Blanca Ríos-Touma

doi:10.3897/zookeys.707.20759

Abstract

Two new species in the rare, endemic Neotropical caddisfly genus Amphoropsyche Holzenthal, 1985 are described from Ecuador (A. carchi sp. n.) and Peru (A. matsigenka sp. n.) bringing to 17 the number of species known in the genus. Almost all species are known from only a few individuals and from even fewer localities. The new species belong to a group of 10 other species that have tergum X in the male genitalia divided into a mesal process and a pair of lateral processes. Amphoropsyche carchi can be separated from those species by the rounded mesal concavity, the short mesobasal lobe, and the short 2nd article of the inferior appendage, while A. matsigenka can be diagnosed by the very slender and straight inferior appendage, which bears a pair of spine-like mesoventral projections. We also present a new record for Amphoropsyche tandayapa Holzenthal & Rázuri-Gonzales, 2011, from Ecuador, previously known only from the male holotype.

Highlights

The recently published Catalog of the Neotropical Trichoptera lists more than 3,200 species occurring in the region of Mexico, the Caribbean, and Central and South America (Holzenthal and Calor 2017)
The endemic genus Amphoropsyche currently includes 15 species, 13 from South America, and the remaining from the Lesser Antilles (Holzenthal and Calor 2017)
The two new species described in this paper from Ecuador and Peru are known from only 3 individuals, and no biological information was observed

Summary

Introduction

The recently published Catalog of the Neotropical Trichoptera lists more than 3,200 species occurring in the region of Mexico, the Caribbean, and Central and South America (Holzenthal and Calor 2017). The endemic genus Amphoropsyche currently includes 15 species (one further divided into two subspecies), 13 from South America, and the remaining from the Lesser Antilles (Holzenthal and Calor 2017). All these species are very rare; individuals are only very infrequently attracted to UV lights or caught in Malaise traps, standard methods for collecting adult caddisflies, and most of the described species are known from only one or two specimens (Holzenthal and Rázuri-Gonzales 2011, Holzenthal and RíosTouma 2016). The two new species described in this paper from Ecuador and Peru are known from only 3 individuals, and no biological information was observed

Material and methods

Discussion