Scolopendromorpha

Key for identification of the scolopendromorph centipedes of Tunisia

1(2) with 4 ocelli on each side of cephalic plate (Family Scolopendridae)...............3

2(1) Head without ocelli. Ultimate legs with saw teeth on tibia and tarsus 1 (Family Cryptopidae)..................................................................................................9

3(4) Legs without tarsal spurs, pretarsus of ultimate leg longer than tarsus 2, spiracles very small................................................................. Cormocephalus gervaisianus

4(3) Most legs with tarsal spurs, pretarsus of ultimate leg markedly shorter than tarsus.............................................................................................................. 5

5(6) First spiracle (of leg-bearing segment 3) oval (Fig. 21), the rest round..................................................................................................... Otostigmus spinicaudus

6(5) Spiracles triangular (Fig. 4), more or less parallel to body axis.........................7

7(8) Leg 1 with two tarsal spurs (Fig. 3); coxopleural process generally long, with at least six spines sited laterally as well as distally (Fig. 5); prefemur of ultimate leg with two rows of spines ventrolaterally and two ventromedially (Fig. 7)................................................................................................................... S. canidens

8(7) Leg 1 with one tarsal spur (Fig. 10); coxopleural process short, with at most five distal spines, none laterally (Fig. 11); prefemur of ultimate leg with, at most, three rows of three spines ventrally (Fig. 13); femur and sometimes tibia in males flattened with ridged lateral and median edges...................... S. morsitans

9(10) Tergite 1 with anterior transverse suture from which run two diverging sutures to the posterior border of the tergite (Fig. 26)............................... C. trisulcatus

10(9) Tergite 1 with anterior transverse suture only (Fig. 28)...................... C. punicus

Key to the Scolopendromorpha of Saint Barthélemy Island

1. 23 leg-bearing segments............................................................................... 2.

-. 21 leg-bearing segments............................................................................... 5.

2. Leg-bearing segment 7 with spiracles, tarsus 2 of ultimate legs of several articles and longer than tarsus 1................................................................................................... Newportia (s.str.) … 3.

-. Leg-bearing segment 7 without spiracles, tarsus 2 of ultimate legs consists of several articles or a single article which is shorter than tarsus 1........................................................................................ 4.

3. Tibiae 3/4–20 with lateral and ventral spurs.............................................. N. longitarsis virginensis

-. Tibiae 2–20 with a lateral spur only............................................................ N. heteropoda

4. Tarsungula very short, ultimate tarsus 2 of several articles..................................... Newportia (Tidops) *

-. Tarsungula normal, ultimate tarsus 2 consists of a single article................................... Scolopocryptops *

5. Leg-bearing segment 7 with spiracles............................................................... Rhysida *

-. Leg-bearing segment 7 without spiracles.................................................................. 6.

6. Eyes absent.................................................................................. Cryptops *

-. Eyes present........................................................................................ 7.

7. Spiracle atrium covered by cuticular folds................................................................. 8. -. Spiracle without cuticular folds..................................................... Otostigmus (Parotostigmus) 8. Legs without tarsal spurs....................................................... Cormocephalus: C. i. impressus -. Legs with tarsal spurs.................................................................... Scolopendra … 9. 9. Tergite 1 with an anterior transverse suture......................................................... S. crudelis -. Tergite 1 without an anterior transverse suture............................................................. 10. 10. Prefemur of legs 20 with dorsal spines............................................................ S. alternans -. Prefemur of legs 20 without dorsal spines................................................................ 11. 11. Prefemur of ultimate legs with up to 3(4) spines ventrally; tergite 21 without median suture............... S. subspinipes -. Prefemur of ultimate legs with at least 8 spines ventrally; tergite 21 with median suture.................... S. morsitans

ORDER SCOLOPENDROMORPHA

Order SCOLOPENDROMORPHA Pocock, 1895