Neanura, MACGILLIVRAY, 1893

Smolis, Adrian & Deharveng, Louis, 2017, Neanura judithae n. sp. from Polish Carpathians, with an updated and illustrated key to all species of the genus Neanura MacGillivray, 1893 (Collembola: Neanuridae), Zoosystema 39 (1), pp. 37-47 : 46

KEY TO THE SPECIES OF NEANURA MACGILLIVRAY, 1893

1. Chaeta L’ on Abd. V present ( Fig. 5A ), chaeta Ocp on head absent ( Fig. 5B ), tubercle (L + Dl) on head consist of two parts (L + 1/2Dl) and Dl’ ( Fig. 5B ) ................................................................................................... 2

— Chaeta L’ on Abd. V absent ( Fig. 2A ), chaeta Ocp on head present ( Fig. 5E ), tubercle (L + Dl) on head not divided ( Fig. 5E ) ......................................................................................................................................... 3

2. Body whitish to pale bluish, tubercles De of Th. II-III with 2 + S and 3 + S chaetae respectively ( Fig. 5C ) ....... ........................................................................................................................... N. pallida Deharveng, 1979

— Body dark bluish, tubercles De of Th. II-III with 3 + S and 4 + S chaetae respectively ( Fig. 5D ) ...................... ................................................................................................................................... N. minuta Gisin, 1963

3. Chaetae Oca, C, E and sometimes D on head absent ( Fig. 1B ) ................................................................... 4

— Chaetae Oca, D and often C and E on head present ( Fig. 5E ) ..................................................................... 5

4. Labrum non ogival ( Fig. 1E ), chaeta Di3 on Abd. V absent ( Fig. 2B ) ................................. N. judithae n. sp.

— Labrum ogival ( Fig. 5F ), chaeta Di3 on Abd. V present ( Fig. 5G ) ................................ N. parva Rusek, 1963

5. Chaetae C, D and E on head present, chaetae De3 of Abd. I-III free ( Fig. 6A ), chaeta L2 of Th. III shorter than L3 ( Fig. 6B ), group Vei of Abd. IV with three chaetae ( Fig. 6D ) ............... N. muscorum* (Templeton, 1835)

— Chaetae De3 of Abd. I–III fused with tubercles De ( Fig. 6F ), chaeta L2 of Th. III longer than L3 ( Fig. 6C ), group Vei on Abd. IV with two chaetae ....................................................................................................... 6

6. Tubercles Di and De of Th. I fused ( Fig. 6E ) .................................................................. N. alba Törne, 1956

— Tubercles Di and De of Th. I separate ( Fig. 6C ) .......................................................................................... 7

7. Chaeta Di3 of Abd. V present ( Fig. 6 H ), tubercles Di of Abd. V fused ( Fig. 6H ) or sometimes separate ....... ........................................................................................................................... N. pseudoparva Rusek, 1963

— Chaeta Di3 of Abd. V absent ( Fig. 6G ), tubercles Di of Abd. V always separate ( Fig. 6G ) ............................. ................................................................................................ N. moldavica Buşmachiu & Deharveng, 2008

Figures

FIG. 5. — A, B, D, Neanura minuta Gisin, 1963: A, ventral chaetotaxy of Abd. IV-VI; B, chaetotaxy of head,dorsolateral view; D, chaetotaxy of group De of Th.II-III; C, N. pallida Deharveng, 1979: chaetotaxy of group De of Th. III.; E, N. pseudoparva Rusek, 1963: chaetotaxy of head, dorsolateral view; F, G, N. parva (Stach, 1951): apical part of labrum (F), tubercle (Di +Di) of Abd. V (G). Abbreviations: see Material and methods. Scale bars: A-E, G, 0.1 mm; F, 0.01 mm.

FIG. 2. — Neanura judithae n. sp.: A, ventral chaetotaxy of Abd.III-VI,adult ♂; B, dorsal chaetotaxy of Abd. V-VI; C, chaeta Di1 of Abd.I; D, sensillum of Abd. V.Abbreviations: see Material and methods. Scale bars: 0.1 mm.

FIG. 1. — Neanura judithae n. sp.: A, dorsal chaetotaxy; B, chaetotaxy of head, dorsolateral view; C, dorsal chaetotaxy of Ant. III-IV; D, ventral chaetotaxy of Ant. III; E, chaetotaxy of labrum. Abbreviations: see Material and methods. Scale bars: A-D, 0.1 mm; E, 0.01 mm.

FIG. 6. — A, B, D, Neanura muscorum (Templeton, 1835): A, chaetotaxy of group De of Th. II-III and Abd. I; B, chaetotaxy of group L of Th. I-III; D, ventral chaetotaxy of Abd. IV-V; C, H, N. pseudoparva Rusek, 1963: C, chaetotaxy of Th. I-III, dorsolateral view; H, tubercle (Di+ Di) of Abd. V; E, N. alba Törne, 1956: tubercle (Di+ De) of Th. I.; G, N. moldavica Buşmachiu & Deharveng, 2008: tubercles Di of Abd. V. Abbreviations: see Material and methods. Scale bars: 0.1 mm.