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7 September 2018 The psychomyiid genus Palerasnitsynus (Insecta, Trichoptera) in mid-Cretaceous Burmese amber
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Abstract

The extinct caddisfly genus Palerasnitsynus (Psychomyiidae) is revised, based on nine new species embedded in mid-Cretaceous Burmese amber. They can be distinguished from all other extinct and extant psychomyiid genera by the absence of fork III in their fore- and hindwings and by the presence of latero-apical dark sporns at the 3rd maxillary palp segment. These species belong to the smallest Trichoptera hitherto known, with forewing lengths of 1.8–2.6 mm. Moreover, the micro-caddisflies of the genus Palerasnitsynus are very common and comprise almost 60 % of all caddisflies in Burmese amber. Some amber pieces contain aggregations of specimens which indicates swarming activities of the adults.

Wilfried Wichard, Patrick Müller, and Bo Wang "The psychomyiid genus Palerasnitsynus (Insecta, Trichoptera) in mid-Cretaceous Burmese amber," Palaeodiversity 11(1), (7 September 2018). https://doi.org/10.18476/pale.11.a8
Received: 14 June 2018; Accepted: 24 July 2018; Published: 7 September 2018
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