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