Medionops, Sánchez-Ruiz, Alexander & Brescovit, Antonio D., 2017

Sánchez-Ruiz, Alexander & Brescovit, Antonio D., 2017, A new genus with seven species of the Subfamily Nopinae (Araneae, Caponiidae) from the Neotropical region, Zootaxa 4291 (1), pp. 117-143: 122

publication ID

https://doi.org/10.11646/zootaxa.4291.1.7

publication LSID

lsid:zoobank.org:pub:07981903-5F66-454D-8CF1-6E1077DB5333

persistent identifier

http://treatment.plazi.org/id/7B3E9B63-FF80-FFBD-D3BA-32B1FA61FB42

treatment provided by

Plazi

scientific name

Medionops
status

n. gen.

Key to the species of Medionops  n. gen.

1 Abdomen dorsally with remarkable pattern of spots, chevrons or bands...........................................2

- Abdomen dorsally with unremarkable pattern of very fine lines, almost unnoticeable................................6

2 Abdomen dorsally with five pairs of irregular dark gray spots forming two longitudinal bands.........................3

- Abdomen dorsally with five whitish gray chevrons fine marks..................................................4

3 Abdomen dorsally with big longitudinal pairs of irregular dark gray spots, almost touching ( Figs 18View FIGURE 18 A –B); crista short, spiders more than 5 mm total length....................................................................... M. simla 

- Abdomen dorsally with small longitudinal pairs of irregular dark gray spots, not touching ( Fig. 10View FIGURE 10 A); crista absent ( Fig. 9View FIGURE 9 K), spiders less than 3 mm total length.......................................................... M. claudiae  n. sp.

4 Whitish gray chevron pattern on abdomen uniform among marks ( Fig. 6View FIGURE 6 A); tip of embolus with several blade –shaped projections ( Figs 2View FIGURE 2 J –L); female posterior plate with an internally projected median septum ( Figs 4View FIGURE 4 J –L)........... M. blades n. sp.

- Whitish gray chevron pattern on abdomen not uniform among marks, the proximal being the largest ( Figs 8View FIGURE 8 A –B; 14A –B); tip of embolus with a short terminal triangular projection ( Figs 7View FIGURE 7 D –E; 12C –F) and females without septum on the internal posterior plate ( Figs 7View FIGURE 7 G –I; 13J –L)............................................................................5

5 The proximal whitish gray chevron mark on abdomen is thick, longitudinal line reaching the pedicel ( Fig. 14View FIGURE 14 A); crista and gladius absents ( Figs 11View FIGURE 11 C,D,F; 13B,C)........................................................... M. murici  n. sp.

- The proximal whitish gray chevron mark on abdomen is very fine, without longitudinal line reaching the pedicel ( Fig. 8View FIGURE 8 A); crista short, and gladius with the traditional shape among nopine ( Dupérré, 2014: fig.4)....................... M. cesari 

6 Crista short but noticeable, not reaching one fourth of metatarsal length; spider more than 4.5 mm total length; males with embolus length more than three times the greater diameter of the bulb ( Figs 19View FIGURE 19 G –H), known only from Venezuela ( Fig. 21View FIGURE 21)........................................................................................... M. tabay  n. sp.

- Crista unnoticeable ( Figs 15View FIGURE 15 D –F); spiders less than 3.5 mm total length; males with embolus length over two times the largest diameter of the bulb ( Figs 16View FIGURE 16 A –B), known only from southeast coast of Brazil ( Fig. 21View FIGURE 21)............... M. ramirezi  n. sp.