Abstract

For the recently established genus Madagopsina (Diopsidae, stalk-eyed flies), Madagopsinamakayensis Feijen, Feijen & Feijen, sp. nov. is described from Madagascar. A concise catalogue is given for the genus and an identification key is presented for its six species. The differential character states are listed for the two species groups of the genus: the Madagopsinaapollo species group and the Madagopsinaapographica species group. The intrageneric relations are discussed based on morphology, geometric morphometrics analysis of wing shape, and allometric data for eye span against body length. Each of these three procedures places the new species in the M.apollo species group with Madagopsinaparvapollina as its closest relative. New records are presented for M.apographica and M.parvapollina.

Highlights

  • In 2018, Feijen et al erected Madagopsina Feijen, Feijen & Feijen and Gracilopsina Feijen, Feijen & Feijen as endemic genera for Madagascar

  • Three new species were described for Madagopsina: M. freidbergi, M. parvapollina, and M. tschirnhausi

  • Allometric data and geometric morphometrics analysis of wing shape, the new species is placed in the M. apollo species group

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Summary

Introduction

In 2018, Feijen et al erected Madagopsina Feijen, Feijen & Feijen and Gracilopsina Feijen, Feijen & Feijen as endemic genera for Madagascar. After the 2018 publication, a single specimen of Madagopsina was received which turned out to be an undescribed species. Allometric data and geometric morphometrics analysis of wing shape, the new species is placed in the M. apollo species group. A concise catalogue for Madagopsina is presented, as well as a new identification key to the six species of the genus. In Feijen and Feijen (2021 in press), a key to the Afrotropical genera of Diopsidae is presented along with a synopsis of the Afrotropical Diopsidae fauna, including the genus Madagopsina

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