Actinopus undetermined

Ríos-Tamayo, D. & Goloboff, P. A., 2018, Taxonomic Revision And Morphology Of The Trapdoor Spider Genus Actinopus (Mygalomorphae: Actinopodidae) In Argentina, Bulletin of the American Museum of Natural History 2018 (419), pp. 1-84 : 13-14

KEY TO FEMALE ACTINOPUs SPECIES FROM ARGENTINA

Females of A. puelche , A. cordobensis , A. magnus , A. ariasi , A. palmar , and A. balcarce are unknown.

1. Spermathecae without lobes (figs. 5C, 7D, E, 9D, E) (type I morphology)..........................2

– Spermathecae with lobes (fig. 11C, 14C, 17D, E, 19C, D, 20D, 22E, F, 24D, 28E, 30C, D, 33C, D, 35D, E, 37D, E, 40C)........................4

2. Dry thorn forests of Central Argentina (Córdoba); spermathecae as in figure 5C ............ ............................................ A. clavero , sp. nov.

– Moister forests of NW Argentina (Tucumám, Salta, Jujuy, Formosa) ; spermathecae as in figures 7D, E, 9D, E........................................3

3. Tibia II with about 23 or fewer retrolateral spines (fig. 9C), body coloration yellowish; cephalothorax length 5.00–5.25 .................... ............................. A. septemtrionalis , sp. nov.

– Tibia II with more than 30 retrolateral spines (fig. 7C), body coloration darker brown; cephalothorax length 5.40 or more .............. ............................................. A. reycali , sp. nov.

4. Sternum flat or with a slight central depression (type II morphology).............................5

– Sternum with a deep central depression (type III morphology)............................................16

5. Spermathecae with external lobes projected perpendicularly to the base (figs. 11C, 14C, 19C, D, 24D)...................................................6

– Spermathecae with external lobes in the same direction as the base (figs. 17D, E, 20D, 22E, F, 28E, 30C, D, 33C, D, 35D, E, 37D, E).......................................................................9

6. Tibia II with about 90 retrolateral spines.......7

– Tibia II with 50 or fewer retrolateral spines...8

7. Fovea wide (fig. 14A) (width of fovea/cephalothorax ≈0.40)............... A. casuhati , sp. nov.

– Fovea narrow (fig. 11A) (width of fovea/cephalothorax ≈0.17) .......... A. argenteus , sp. nov.

8. Booklungs with dark markings; tibia III with apical thorns, apical to the crown of spines; northern Buenos Aires; .................................. .......................... A. gerschiapelliarum , sp. nov.

– Booklungs with light markings; no thorns apical to the crown of the tibia III; northern Uruguay and eastern Entre Ríos ( Argentina);........... A. longipalpis Koch, 1842

9. Sternum center flat..........................................10

– Sternum center with slight depression..........12

10. Tibia II with less than 40 retrolateral spines ................................... A. indiamuerta , sp. nov.

– Tibia II with more than 60 retrolateral spines..11

11. Small spiders (body length <15 mm); spermathecae with very subtle lobes (fig. 28E); body coloration yellowish brown .................. ............................................. A. pampa , sp. nov.

– Larger spiders (body length> 17 mm); spermathecae with lobes small but well marked (fig. 33C, D); body coloration darker brown .............................. A. ramirezi , sp. nov.

12. Posterior sigilla anteriorly reaching the sternum center (fig. 30E)...................................13

– Posterior sigilla not reaching the sternum center (figs. 22D, 35F, 37F)........................14

13. Spermathecae wide, with small irregular lobes (fig. 30C, D), Patagonia ........................ ....................................... A. patagonia , sp. nov.

– Spermathecae narrow, with one external lobe well defined and inclined inward (fig. 17D, E) north-estern Argentina.......... A. coylei , sp. nov.

14. Booklungs with light markings (fig. 28C)..15

– Booklungs with dark markings (fig. 35C) ....... ........................................ A. szumikae , sp. nov.

15. Spermathecae with a small external lobe and without inner lobe (fig. 22E–F), no prolateral spines on tibia I ............................. .......................... A. insignis ( Holmberg, 1881)

– Spermathecae with a long external lobe and a small inner one (fig. 37D, E), four prolateral spines on tibia I (fig. 37C) ...................... ............................................ A. taragui , sp. nov.

16. Thoracic fovea discontinuous, interrupted in the middle (fig. 42A) ...................................... ...................... A. goloboffi Ríos-Tamayo, 2014

– Thoracic fovea continuous (fig. 40A) ............... ........................................ A. excavatus , sp. nov.