Abstract

Wesmaelius (Kimminsia) nanacamilpa Marquez & Contreras, sp. n., a brown lacewing from Tlaxcala state, Mexico is described and illustrated. This is the second recorded species of Wesmaelius from Mexico, and the third from Middle America. Males of the new species may be identified by parameres separate apically, styliform sclerites directed basally, as well as a rounded gonarcus with a short entoprocessus. Females may be distinguished from closely related species by a subgenital plate with the central plate broadly incised basally. There are now 16 species of Wesmaelius known from the New World.

Highlights

  • Wesmaelius Krüger is a mostly Holarctic brown lacewing genus, with highest diversity in temperate regions of Eurasia and North America (Yang 1980, Oswald 1993)

  • The New World species were treated more recently by Klimaszewski and Kevan (1987a, b), who revised the species from Alaska and Canada, and diagnosed the two subgenera proposed by Aspöck et al (1980), Kimminsia Killington and Wesmaelius Krüger

  • This subdivision was questioned by Oswald (1993), on the grounds that Kimminsia may be paraphyletic, a position followed by Zhao et al (2017), there is no conclusive evidence yet to settle the validity of the subgenera

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Summary

Introduction

Wesmaelius Krüger is a mostly Holarctic brown lacewing genus, with highest diversity in temperate regions of Eurasia and North America (Yang 1980, Oswald 1993). The New World species were treated more recently by Klimaszewski and Kevan (1987a, b), who revised the species from Alaska and Canada, and diagnosed the two subgenera proposed by Aspöck et al (1980), Kimminsia Killington and Wesmaelius Krüger. This subdivision was questioned by Oswald (1993), on the grounds that Kimminsia may be paraphyletic, a position followed by Zhao et al (2017), there is no conclusive evidence yet to settle the validity of the subgenera. A key for the identification of the 15 currently known species of Wesmaelius (Kimminsia) from the New World is included; the only currently known species of Wesmaelius (W.) from the New World, the Nearctic Wesmaelius (W.) longifrons (Walker), may be identified with Klimaszewski and Kevan (1987b)

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