Medionops,

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: 122-124

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-FFBF-D3BA-364DFBE1FEE7

treatment provided by

Plazi

scientific name

Medionops
status

 

Medionops  blades new species

Figures 1EView FIGURE 1; 2–6

Types. Male holotype from Páramo de Monserrate (4°36'N 74°3'W), 40 km NE of Bogotá, 2920 m aslGoogleMaps  , Colombia, 23.vii.1968, H. Sturm, deposited in AMNH  . Paratypes: one male, one female and 1 immature, same data as holotype, deposited in AMNHGoogleMaps  .

Additional material examined. COLOMBIA: Bogotá: Páramo de Monserrate (4°36'N 74°3'W), 40 km NE of Bogotá, 2920 m asl, 23.vii.1968, H. Sturm, 1♂ for SEM, 2 imm. ( AMNH)GoogleMaps  . Paramo de Guaca , 40 km NE of Bogotá, 2920 m asl, 23.vii.1968, H. Sturm, 2♂, 1♀ (genital area, palp, spinnerets and legs for SEM) ( MCZ 128513View Materials). 

Etymology. The specific name refers to the blade –shaped projections on the tip of the male embolus, and is masculine in gender.

Diagnosis. Male and females resemble those of M. cesari  n. sp. and M. murici  n. sp. in having the abdomen with light whitish gray chevron dorsal pattern, but can be distinguished by having uniform chevron marks ( Fig. 6View FIGURE 6 A). Males with several blade –shaped projections on the tip of embolus (arrows in Figs 2View FIGURE 2 J –L); females with internally projected median septum on the posterior plate ( Figs 4View FIGURE 4 J –L).

Description. Male (holotype): Total length 5.2. Carapace 1.9 long, 1.7 wide. Sternum 1.7 long, 1.5 wide. Leg measurements: I: 2.80; II: 2.75; III: 2.30; IV: 3.05. Carapace dark orange. Chelicerae, palps and legs orange; coxae and trochanters lighter. Endites, labium and sternum light orange. Abdomen dark gray with a pattern formed by five light grey chevrons ( Figs 6View FIGURE 6 A, B). Anal tubercle and spinnerets lighter than abdomen. Crista short, gladius with the common shape among nopine ( Figs 3View FIGURE 3 D, G, J). Palp with spherical oval bulb and embolus longer than cymbium ( Figs 6View FIGURE 6 D –E), tip of embolus slightly curved, sinuous dorsally, with several blade –shaped projections ( Figs 2View FIGURE 2 J –L).

Female (paratype): Total length 5.9. Carapace 1.7 long, 1.5 wide. Sternum 1.6 long, 1.4 wide. Leg measurements: I: 2.85; II: 2.80; III: 2.40; IV: 3.10. Carapace, chelicerae, labium, legs, coxae, endites and sternum as in the male. Abdomen as in the male, but somewhat lighter. Anal tubercle and spinnerets lighter than abdomen.

Crista (ca) and gladius (gl) as in male ( Fig. 5View FIGURE 5 G). External genitalia with strongly convex and wide genital opening (go), wide sclerotization around spiracles (ess), slight on anterior plate (ap) ( Fig. 6View FIGURE 6 C). Internal genitalia with slight median concavity (mc); fine internal fold weakly sclerotized; posterior plate with median septum ( Figs 4View FIGURE 4 J –L).

Distribution. Known only from the Bogotá province in Colombia ( Fig. 21View FIGURE 21).

AMNH

American Museum of Natural History

MCZ

Museum of Comparative Zoology