Abstract
New species belonging to the genus Endonura is described and illustrated in detail. Endonura longirostris sp. n., from northern Iran, is distinctive due to an exceptionally elongate buccal cone compared to that of most other species of the genus. Other characteristic features of the species are the white body with pigmented eyes, a reduced chaetotaxy of the lateral part of the head, the thorax II–III and abdomen I–III with free chaetae De2 and 3, and abdomen IV with particularly short chaetae Di1. The main characteristics of Endonura paracentaurea sp. n. include a white body with dark pigmented eyes, a nonogival labrum, the presence of tubercles Di on the first thoracic segment and of microchaetae on the rudimentary furca. Endonura turkmenica sp. n. can be recognized by its bluish-grey body, labral chaetotaxy, free chaetae E on the head, and notably short chaetae De3 on the thorax and the abdomen. Short remarks on the possible importance of labral modifications are also provided.
Highlights
Amongst springtails, primitive and wingless insects, the subfamily Neanurinae is one of the most diversified, widespread, and species-rich systematic units and evolutionary lineages
E. paracentaurea sp. n. strongly recalls E. centaurea Cassagnau et Péja, 1979, a form shortly described from Greece (Cassagnau and Péja 1979) and recently redescribed (Smolis 2016). Both species are characterised in having white body, same number of chaetae on tubercles Dl and Af on head, same number of dorsal chaetae on Th and Abd and microchaetae on furca rudimentary
Members of the family Neanuridae completely lack a molar plate on the mandibles and have suctorial mouthparts
Summary
Primitive and wingless insects, the subfamily Neanurinae is one of the most diversified, widespread, and species-rich systematic units and evolutionary lineages. The Neanurini is the second largest tribe within the subfamily, after Paleonurini, currently containing over 170 valid species belonging to 22 genera (Cassagnau 1989, Hopkin 1997, Deharveng and Bedos 2000, Deharveng et al 2007, Smolis 2007, 2011, Mayvan et al 2015). Amongst Neanurini, the genus is more similar, and presumably seems to be closely related, to two genera: Cryptonura Cassagnau, 1979, and Deutonura Cassagnau, 1979, which share the following characters with Endonura: maximum 2+2 eyes on the head, the non-cross-type of chaetotaxy, and differentiation in size of dorsal chaetae.
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