Xenylla, Tullberg, 1869

Skarżyński, Dariusz, Valle, Barbara, Gwiazdowicz, Dariusz J. & Porco, David, 2025, Integrative description of two new species of the Xenylla maritima species complex (Collembola: Hypogastruridae) from Crete (Greece), with notes on the high intraspecific genetic divergence found in X. maritima Tullberg, 1869, European Journal of Taxonomy 976, pp. 77-91 : 88

Identification key to species of the Xenylla maritima complex

The key is based on Skarżyński et al. (2018).

1. Three sublobal hairs on outer lobe of maxilla .................................................................................. 2

– One or two sublobal hairs on outer lobe of maxilla .......................................................................... 4

2. Setae in front of retinaculum on Abd. III and setae m 5 on Abd. IV absent ......................................... ................................................................................................................. X. maritima Tullberg, 1869

– Setae in front of retinaculum on Abd. III and setae m 5 on Abd. IV present ..................................... 3

3. Ratio: mucrodens / claw III length 2.3 .................................................. X. asiatica Martynova, 1975

– Ratio: mucrodens / claw III length 1–1.4 ................................................................... X. ellisi sp. nov.

4. One sublobal hair on outer lobe of maxilla, retinaculum with 2+2 teeth .......................................... .............................................................................................................. X. mediterranea Gama, 1964

– Two sublobal hairs on outer lobe of maxilla, retinaculum with 3+3 teeth ...................................... 5

5. Setae m 5 on Abd. IV absent, apex of mucro narrow, weakly upturned ............................................. 6

– Setae m 5 on Abd. IV present, apex of mucro broad, spoon-like ....................................................... 7

6. One or two setae in front of retinaculum on Abd. III ......................................................................... ................................................................................ X. szeptyckii Skarżyński, Piwnik & Porco, 2018

– Setae in front of retinaculum on Abd. III absent ................................................... X. schulzi sp. nov.

7. Ratio of mucrodens/ claw III length 1–1.3, mucro spoon-like, two setae on leg III subcoxae 1 ....... ...................................................................................................................... X. nitida Tullberg, 1871

– Ratio of mucrodens/ claw III length 2–2.3, mucro strongly spoon-like, three setae on leg III subcoxae 1 ............................................................. X. pomorskii Skarżyński, Piwnik & Porco, 2018