Niarchos

Platnick, Norman I. & Dupérré, Nadine, 2010, The Andean Goblin Spiders Of The New Genera Niarchos And Scaphios (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2010 (345), pp. 1-120 : 9-10

KEY TO SPECIES OF NIARCHOS

1. Males (those of baehrae , grismadoi , matiasi , and rheimsae unknown)............. 2

– Females (those of keili and florezi unknown)......................... 19

2. Dorsal scutum covering most of abdomen .............................. 4

– Dorsal scutum covering cardiac area only (figs. 407, 430)................... 3

3. Dorsal scutum relatively long (fig. 407)......................... michaliki

– Dorsal scutum relatively short (fig. 430)............................ ligiae

4. Palpal bulb with retroventral projection (as in fig. 17)......................... 5

– Palpal bulb without retroventral projection........................... 11

5. Tip of retroventral projection on palpal bulb bent distally (figs. 202, 225); Colombia.... 6

– Tip of retroventral projection on palpal bulb straight; Ecuador................. 7

6. Embolar region relatively narrow (figs. 221, 224)........................ florezi

– Embolar region relatively wide (figs. 198, 201)................... wygodzinskyi

7. Anterior projection on endites narrow (figs. 151, 174)................... 8

– Anterior projection on endites wide (figs. 12, 35, 128)........................ 9

8. Embolar region relatively long (figs. 176– 179)........................ elicioi

– Embolar region relatively short (figs. 153– 156)........................ tapiai

9. Endites with rounded protrusion just posterior of anterior projection (fig. 128), chelicerae with distinct anterior projection (fig. 126)... keili

– Endites without rounded protrusion, chelicerae otherwise.................... 10

10. Embolus relatively long, thin (figs. 36–40)......................... barragani

– Embolus relatively short, thick (figs. 13– 17)....................... cotopaxi

11. Embolar base bent near middle at right angle (as in figs. 234, 395)............... 15

– Embolar base not bent near middle at right angle.......................... 12

12. Embolus relatively short, with translucent tip (figs. 569, 665)................... 13

– Embolus relatively long, with dark tip (figs. 462, 485)................... 14

13. Translucent tip of embolus relatively long (figs. 664, 665).............. facundoi

– Translucent tip of embolus relatively short (figs. 568, 569).............. palenque

14. Embolus accompanied by long, basal projection (figs. 461, 462)............... loja

– Embolus without basal projection (figs. 484, 485)........................ foreroi

15. Embolus bearing long, narrow distal flange (figs. 395, 396)............... santosi

– Embolus without narrow distal flange.... .............................. 16

16. Embolar base relatively thick (figs. 234, 235)....................... scutatus

– Embolar base relatively thin (as in figs. 319, 344, 369)....................... 17

17. Anterior projection on endites relatively small, directed medially (fig. 368), terminal palpal elements triangular (figs. 374, 375)............................ vegai

– Anterior projection on endites larger (figs. 318, 343)................... 18

18. Projection on embolar base relatively large (figs. 319–325)................ ramirezi

– Projection on embolar base relatively small (figs. 344–350)............... bonaldoi

19. Sternum surface finely reticulate (as in fig. 46)......................... 20

– Sternum surface smooth (as in fig. 246).. 28

20. Genitalia with anteriorly expanded anterior process (figs. 474, 677).............. 21

– Genitalia without such a process...... 22

21. Genitalia with translucent atrium (figs. 677, 678)...................... facundoi

– Genitalia without translucent atrium (figs. 474, 475)...................... loja

22. Genitalia with thumblike anterior process (figs. 27, 119, 384)................. 23

– Genitalia without thumblike anterior process........................... 25

23. Thumblike process extending anterior of receptaculum (fig. 385)............ vegai

– Thumblike process not extending beyond receptaculum (figs. 27, 119).......... 24

24. Posterior extensions of thumblike process diverging at wide angle (figs. 119, 120)......................... barragani

– Posterior extensions of thumblike process diverging at narrow angle (figs. 26, 27)......................... cotopaxi

25. Genitalia with distinct apodemes (figs. 143, 166, 189)....................... 26

– Genitalia without distinct apodemes (figs. 211, 212)........... wygodzinskyi

26. Anterior receptaculum containing distinct lateral ducts (figs. 143, 166).......... 27

– Anterior receptaculum without lateral ducts (figs. 188, 189)................ elicioi

27. Epigynal atrium triangular (figs. 142, 143).......................... baehrae

– Epigynal atrium ovoid (figs. 165, 166) tapiai

28. Genitalia with thumblike anterior process extending anteriorly of receptaculum (figs. 310, 334, 359, 405)................ 29

– Genitalia without thumblike anterior process........................... 32

29. Anterior margin of anterior receptaculum medially indented (figs. 310, 334)...... 30

– Anterior margin of anterior receptaculum medially smooth (figs. 359, 360, 405, 406) .............................. 31

30. Sclerite connecting apodemes narrow at midline (fig. 335).............. ramirezi

– Sclerite connecting apodemes wide at midline (fig. 311).................... scutatus

31. Apodemes present, connected by wide sclerite (fig. 360)................... bonaldoi

– Apodemes absent (fig. 408)...... santosi

32. Anterior receptaculum with M–shaped anterior protrusion (figs. 428, 451)........ 33

– Anterior receptaculum without anterior protrusion......................... 34

33. Posterior sclerite of genitalia oval (figs. 428, 429)...................... michaliki

– Posterior sclerite of genitalia rectangular (figs. 451, 452)................. ligiae

34. Anterior receptaculum enlarged, membranous, with short anterior sclerotization (figs. 687, 697)................... 35

– Anterior receptaculum not enlarged.... 36

35. Anterior sclerotization of anterior receptaculum relatively narrow (figs. 687, 688)............................. grismadoi

– Anterior sclerotization of anterior receptaculum relatively wide (figs. 697, 698)................................ matiasi

36. Apodemes longer than epigastric scutum (figs. 707, 708).............. rheimsae

– Apodemes much shorter than epigastric scutum......................... 37

37. Anterior genitalic process greatly widened anteriorly (figs. 654, 655)....... palenque

– Anterior genitalic process not greatly widened anteriorly (figs. 559, 560)......... foreroi