What question did this study set out to answer?

The aim is to describe new species of Lonchaeidae and document their distinguishing features.

January 18, 2026Taxonomy0 citationsOpen Access

New Species and New Details of Lonchaeidae (Diptera) from the Australasia–Oceania and Indo-Malayan Realms

Key Points

The aim is to describe new species of Lonchaeidae and document their distinguishing features.
Described ten new species within the genera Lonchaea and Silba.
Illustrated male genitalia of the new species and existing species.
Prepared a checklist of Lonchaeidae in Papua New Guinea.
Ten new species of Lonchaeidae were identified: five from Lonchaea and five from Silba.
Illustrations of male genitalia for some species were provided for the first time.
A checklist of the Lonchaeidae family from Papua New Guinea was created.

Abstract

Ten new species of Lonchaeidae in the genera Lonchaea Fallen and Silba Macquart are described, nine from the Australasia–Oceania realm—Papua New Guinea (7 species), Solomon Islands (1 species), and Sulawesi (1 species)—and one from Sumatra in the Indo-Malayan realm. The new species are Lonchaea bacchusi sp. nov., Lonchaea herzogi sp. nov., Lonchaea morobe sp. nov., Lonchaea spenceri sp. nov., Lonchaea sulawesi sp. nov., Silba guineai sp. nov., Silba honiara sp. nov., Silba ismayi sp. nov., Silba kokoda sp. nov., and Silba papua sp. nov. The male genitalia are illustrated, and the diagnostic features that distinguish these species are presented. The male genitalia of Lonchaea uniseta Malloch, 1930, from Samoa are described and illustrated for the first time, and the male genitalia of two species from Micronesia, Lonchaea belua McAlpine, 1964, and Lonchaea sabroski McAlpine, 1964, are illustrated for the first time. A checklist of the Lonchaeidae of Papua New Guinea is provided.

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