Sicarius

Key for Sicarius species from the Brazilian Caatinga

1 Males............................................................................................... 2

- Females............................................................................................. 5

2 Embolus with a distal keel; bulb base smoothly tapers into body (Fig. 131)...................... Sicarius ornatus n. sp.

- Embolus simple, without distal keel; bulb base distinct from bulb body (Figs 125, 127, 129).......................... 3

3 Embolus bent at approximately a right angle in relation to the rest of the bulb (Figs 65, 89, 127) and with a curvature facing ret- rolaterally, visible only in apical view (Fig. 66)............................................................... 4

- Embolus not bent and without such curvature (Figs 49, 125).......................... Sicarius tropicus (Mello-Leitão)

4 Embolus relatively short and robust (Figs 65–71)............................................ Sicarius cariri n. sp.

- Embolus relatively long and sinuous (Figs 88–91)......................................... Sicarius diadorim n. sp.

5 Ventral face of spermathecae with 2–5 pairs of digitiform branches and covered with many pores (Figs 111, 115, 119, 141, 149)................................................................................... Sicarius ornatus n. sp.

- Ventral face of spermathecae without such branches, or with just one pair; few pores (Figs 53, 79, 93)................... 6

6 Spermathecae with few branches(usually less than 12) (Figs 73, 79, 81).......................... Sicarius cariri n. sp.

- Spermathecae with at least 16 branches (Figs 53, 55, 93, 101).................................................. 7

7 Spermathecae branches convoluted near the apex; median branches much longer than the lateral ones (Figs 93, 95, 99, 101)................................................................................... Sicarius diadorim n. sp.

- Spermathecae branches only slightly convoluted; all spermathecae branches approximately the same size (Figs 53, 55, 57, 61)........................................................................... Sicarius tropicus (Mello-Leitão)