Plutomurus Yosii

Barjadze, Shalva, Giordano, Rosanna & Soto-Adames, Felipe, 2020, Description of a new species of Plutomurus Yosii (Collembola: Tomoceridae) from Georgia, Caucasus and notes on the morphology of Plutomurus birsteini Djanashvili & Barjadze, Zootaxa 4790 (2), pp. 375-386 : 384

Key to species of Plutomurus Yosii from the Caucasus

1 Prelabral chaetae 2+2.................................................................................. 2

- Prelabral chaetae 3+3.................................................................................. 5

2 Spine–like chaetae on tibiotarsus I, II, and III as 002......................................................... 3

- Spine–like chaetae on tibiotarsus I, II, and III as 001......................................................... 4

3 Tenent hair acuminate.............................................. P. abchasicus Martynova, 1969 ( Georgia: soil)

- Tenent hair clavate...................................... P. birsteini Djanashvili & Barjadze, 2011 ( Georgia: caves)

4 Eye patch with 4–5 eyes; tenaculum with 1 chaeta........ P. sorosi Kniss & Thibaud, 1999 ( Russia: North Caucasus: cave)

- Eye patch with 6 eyes; tenaculum with 3–4 chaetae..................................................................................................... P. jeleznovodski Kniss & Thibaud, 1999 ( Russia: North Caucasus: cave)

5 Tenent hair clavate............... P. revazi Barjadze, Baquero, Soto-Adames, Giordano & Jordana, 2016 ( Georgia: caves)

- Tenent hair acuminate.................................................................................. 6

6 Spine–like chaetae on tibiotarsus I, II, and III as 002......................................................... 7

- Spine–like chaetae on tibiotarsus I, II, and III as 001......................................................... 9

7 Eyes absent; Th. II with 6 (anterior, medial & posterior) Mc.................................................................................... P. ortobalaganensis Jordana & Baquero, 2012 in Jordana et al. 2012 ( Georgia: caves)

- Eyes present; Th. II with 4 (medial & posterior) Mc.......................................................... 8

8 Abd. IV with 1 large lateral and sometimes a second smaller medial Mc.................................................................... P. shurubumuensis Barjadze, Jordana & Soto-Adames in Barjadze et al. 2018 ( Georgia: cave)

- Abd. IV with 3 Mc: 1 large lateral and 2 smaller medial Mc.................................................................................. P. pichkhaiai Barjadze, Jordana & Soto-Adames in Barjadze et al. 2018 ( Georgia: caves)

9 Eyes present and distinct; empodium with a large tooth.................................................................................................... P. kelasuricus Martynova, 1969 (North Caucasus and Georgia: caves)

- Eyes absent or indistinct; empodium with small teeth........................................................ 10

10 Th. II with 5 (medial & posterior) Mc; one chaeta–like process on the sublobal plate is much shorter than others ( Fig. 19 ).......................................................................... P. jordanai sp. nov. ( Georgia: cave)

- Th. II with without Mc; all chaeta-like process on the sublobal plate normally developed............................................................ P. eristoi Barjadze, Baquero, Soto-Adames, Giordano & Jordana, 2016 ( Georgia: cave)

Figures

FIGURES 19–20. Sublobal plate of outer lobe of maxillary palp. 19, Plutomurus jordanai sp. nov. (scale: 0.005 mm) (Arrow indicates reduced chaeta-like process); 20, Plutomurus kelasuricus Martynova, 1969 (scale: 0.005 mm).