Deuteraphorura

Fanciulli, Pietro Paolo, Loreti, Mara & Dallai, Romano, 2010, A new cave species of Deuteraphorura (Collembola: Onychiuridae) and redescription of four species of the genus from Italy, Zootaxa 2609, pp. 34-54 : 52

Key for the Italian species of Deuteraphorura (based on dorsal and ventral formula of pseudocelli)

1 Thoracic tergum I without pseudocelli ........................................................................................................................ 2

- Thoracic tergum I with 1 + 1 pseudocelli ..................................................................................................................... 9

2 Hind margin of the head with 3 + 3 pseudocelli ............................................................................................................ 3

- Hind margin of the head with 2 + 2 pseudocelli............................................................................................................ 4

3 Pseudocellar formula of abdominal sterna I–IV as 3212, Abd. tergum IVwith chaeta p 4 ............... D. pseudobosnaria

- Pseudocellar formula of abdominal sterna I–IV as 1212, Abd. tergum IVwithout chaeta p 4 .................... D. apuanica

4 Abdominal tergum I with 5 + 5 pseudocelli .................................................................................................. D. spipolae

- Abdominal tergum I with 3 + 3 pseudocelli ................................................................................................................... 5

5 Abdominal tergum V with 3 + 3 pseudocelli................................................................................................................. 6

- Abdominal tergum V with 4 + 4 pseudocelli................................................................................................................. 7

6 Pseudocellar formula of abdominal sterna I–IV as 3212, PAO with 16–17 compound vesicles, body length 1,3–1,4 mm ................................................................................................................................................................ D. frasassi

- Pseudocellar formula of abdominal sterna I–IV as 2212, PAO with 18–20 compound vesicles, body length 1,8–2,5 mm .................................................................................................................................................................... D. banii

7 Head ventrally with 2 + 2 pseudocelli ............................................................................................................. D. ghidinii

- Head ventrally with 3 + 3 pseudocelli ........................................................................................................................... 8

8 Pseudocellar formula of Abd. sterna I–IV as 3212, body length 2,4–2,6 mm, PAO with 19–21 compound vesicles, Abd. tergum IV without Ca0 chaeta .......................................................................................... D. caprelleana sp. nov.

- Pseudocellar formula of Abd. sterna I–IV as 2212, body length 1,41–1,85 mm, PAO with 14–16 compound vesicles, Abd. tergum IV with Ca0 chaeta ...................................................................................................... D. pseudoghidinii

9 Abdominal tergum V with 3 + 3 pseudocelli............................................................................................................... 10

- Abdominal tergum V with 4 + 4 pseudocelli................................................................................................................ 12

10 Head ventrally with 2 + 2 pseudocelli ............................................................................................................ D. eduardi

- Head ventrally with 3 + 3 pseudocelli .......................................................................................................................... 11

11 Pseudocellar formula of Abd. sterna I–IV as 3222 ....................................................................................... D. silvaria

- Pseudocellar formula of Abd. sterna I–IV as 1212 ....................................................................... D. pseudoinsubraria

12 Head ventrally with 2 + 2 pseudocelli .......................................................................................................................... 13

- Head ventrally with 3 + 3 pseudocelli .......................................................................................................................... 14

13 Pseudocellar formula ventrally as 2 /000/ 2212, PAO with 20 compound vesicles ................................ D. bergamaria

- Pseudocellar formula ventrally as 2 /011/ 1212, PAO with 15 compound vesicles .................................. D. defensaria

14 Pseudocellar formula venytrally as 3 /011/ 2212 ......................................................................................................... 15

- Pseudocellar formula ventrally as 3 /011/ 3212 ........................................................................................ D. cebennaria

15 Posterior part of Abd. V with only one macrochaeta positioned laterally to the most lateral pseudocellus .................. ................................................................................................................................................................. D. imperfecta

- Posterior part of Abd. V with two macro-chaetae, one of them positioned between the medial pseudocelli, the other laterally to the most lateral one ..................................................................................................................... D. dunaria