Contribution to the knowledge of Neanurinae of north-western Iran with description of seven new species (Collembola, Neanuridae)

Abstract

Seven new species of the subfamily Neanurinae from north-western Iran are described and illustrated in detail. Endonura agnieskae sp. nov. differs from the most similar congener, E. reticulata (Axelson, 1905), in chaetotaxic details and the arrangement of tubercles on the dorsal side of the body. Endonura annae sp. nov. can be easily recognised by its wide labrum, the absence of chaetae C on the head and the presence of a toothed claw. Endonura schwendingeri sp. nov. is especially distinctive due to the absence of chaetae A and Ocp on the head and the presence of the male ventral organ. Deutonura breviseta sp. nov. is related and most similar to D. persica Smolis, Shayanmehr & Yoosefi-Lafooraki, 2018, described recently and known from Mazandran Province in Iran. The new species can be easily distinguished by the following set of features: dark pigmented body, presence of chaetae C and Dl3 on the head, absence of microchaetae on the furca rudimentary, presence of thickened macrochaetae on dorsal side of body and absence of cryptopygy. The main characteristics of Deutonura sengleti sp. nov. include a white body with dark pigmented eyes, the fusion of tubercles Di and De on the first thoracic segment and the presence of the male ventral organ. Deutonura iranica sp. nov. is superficially similar to D. gibbosa Porco, Bedos & Deharveng, 2010, a species known from the Alps and Jura in Europe, but it differs in the body colour and the number of labial chaetae and chaetae (L+So) on the head. Paravietnura rostrata sp. nov., the first member of this enigmatic and intriguing genus known from Iran, is characterised by an unusually elongate ogival labrum and extreme reduction of dorsal chaetotaxy. Furthermore, new records of several other species of the subfamily: Cryptonura maxima Smolis, Falahati & Skarżyński, 2012; C. persica Smolis, Falahati & Skarżyński, 2012; Deutonura persica; Endonura longirostris Smolis, Shayanmehr, Kuznetsova & Yoosefi-Lafooraki, 2017; E. paracentaurea Smolis, Shayanmehr, Kuznetsova & Yoosefi-Lafooraki, 2017; Neanura deharvengi Smolis, Shayanmehr & Yoosefi-Lafooraki, 2018; N. muscorum (Templeton, 1835) and Protanura papillata Cassagnau & Delamare Deboutteville, 1955 are given. The present study is based on the rich material collected by Antoine Senglet and loaned by Peter J. Schwendinger.

Keywords: Asia; new records; springtails; taxonomy; western Palearctic.

Figures 1–13.

Endonura agnieskae sp. nov.: 1 apical bulb, dorsal view 2 apical bulb, ventral view 3 chaetotaxy of head and Th., dorsolateral view 4 chaetotaxy of labium and group Vi (holotype) 5 chaetotaxy and ventral sclerifications of labrum (holotype) 6 tubercle De of Th. III 7 chaeta B4 of leg III 8 claw of leg III, lateral view 9 ventral chaetotaxy of Ant. III 10 dorsal chaetotaxy of Ant. III–IV (holotype) 11 dorsal chaetotaxy of Abd. III–VI 12 chaeta Di1 of Abd. V 13 sensillum of Abd. V.

Figures 14–27.

Endonura annae sp. nov.: 14 chaetotaxy of head and Th. (holotype), dorsolateral view 15 chaetotaxy and ventral sclerifications of labrum 16 Mandible 17 Maxilla 18 chaetotaxy of labium and group Vi19 apical bulb, dorsal view 20 apical bulb, ventral view 21 sensillum sgv and microsensillum of Ant. III 22 dorsal chaetotaxy of Ant. III–IV 23 dorsal chaetotaxy of Abd. III–VI (holotype) 24 sensillum of Abd. V 25 chaeta Di1 of Abd. V 26 tibiotarsus and claw of leg III, lateral view 27 tubercle L of Abd. IV.

Figures 28–41.

Endonura schwendingeri sp. nov.: 28 chaetotaxy of labium 29 chaetotaxy of head and Th. (holotype), dorsolateral view 30 apical part of labrum 31 Mandible 32 Maxilla 33 tibiotarsus and claw of leg III, lateral view 34 apical bulb, ventral view 35 apical bulb, dorsal view 36 dorsal chaetotaxy of Ant. III–IV 37 sensillum sgv and microsensillum of Ant. III 38 ventral chaetotaxy of Abd. II–VI (adult male) 39 dorsal chaetotaxy of Abd. III–VI 40 chaeta Di1 of Abd. V 41 sensillum of Abd. V.

Figures 42–52.

Deutonura breviseta sp. nov.: 42 chaetotaxy of head, Th. and Abd. I (holotype), dorsolateral view 43 chaetotaxy of tubercles Dl and (L+So), lateral view 44 apical bulb, dorsal view 45 apical bulb, ventral view 46 dorsal chaetotaxy of Ant. III–IV 47 ventral chaetotaxy of Ant. III 48 ventral chaetotaxy of Abd. IV–V (adult male) 49 claw of leg III, lateral view 50 dorsal chaetotaxy of Abd. IV–VI (holotype) 51 sensillum of Abd. V 52 chaeta Di1 of Abd. V.

Figures 53–61.

Deutonura sengleti sp. nov. 53 chaetotaxy of head, Th. and Abd. I (holotype), dorsolateral view 54 dorsal chaetotaxy of Ant. III–IV 55 ventral chaetotaxy of Ant. III 56 chaeta Di1 of Abd. V 57 sensillum of Abd. V 58 apical part of labrum 59 chaetotaxy and ventral sclerifications of labrum 60 dorsal chaetotaxy of Abd. V–VI (holotype) 61 ventral chaetotaxy of Abd. III–IV (adult male).

Figures 62–71.

Deutonura iranica sp. nov.: 62 chaetotaxy and ventral sclerifications of labrum 63 chaetotaxy of head and Th. (holotype), dorsolateral view 64 dorsal chaetotaxy of Ant. III–IV 65 ventral chaetotaxy of Ant. III–IV 66 chaetotaxy of tubercles L of Abd. III–IV, ventral view 67 chaetotaxy of labium and group Vi68 dorsal chaetotaxy of Abd. III–VI (holotype) 69 chaeta Di1 of Abd. V 70 chaeta Di2 of Abd. V 71 sensillum of Abd. V.

Figures 72–82.

Paravietnura rostrata sp. nov.: 72 apical part of Ant. IV, dorsal view 73 sensillum sgd and microsensilla of AOIII, dorsolateral view 74 sensillum sgv and microsensillum of Ant. III 75 chaetotaxy of head and Th. (holotype), dorsolateral view 76 chaetotaxy and ventral sclerifications of labrum 77 chaetotaxy of labium and group Vi78 furca rudimentary 79 dorsal chaetotaxy of Abd. III–VI (holotype) 80 claw of leg III, lateral view 81 chaeta Di1 of Abd. III 82 sensillum of Abd. IV.