Nops gertschi Chickering, 1967

Sánchez-Ruiz, Alexander & Brescovit, Antonio D., 2018, A revision of the Neotropical spider genus Nops MacLeay (Araneae: Caponiidae) with the first phylogenetic hypothesis for the Nopinae genera, Zootaxa 4427 (1), pp. 1-121: 32-37

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Nops gertschi Chickering, 1967


Nops gertschi Chickering, 1967 

Figure 18A‒F View Figure

Nops gertschi Chickering, 1967: 9  , figs 7–8. Male holotype from Loma Cibao, 600–1600 m, La Vega, Dominican Republic, 9.viii.1956, Allan F. Archer & E. B. M ( AMNHAbout AMNH; examined). Sánchez– Ruiz, 2004: 96 (all specimens except those from Cuba, herein included in N. siboney Sánchez  –Ruiz).

Remarks. The type locality was never found during several fieldtrips to La Vega province. A male from Azua ( MNHNSDAbout MNHNSD 09.1424) is conspecific with the holotype, and the female from Azua ( MNHNSDAbout MNHNSD 09.1425) is conspecific with other females examined from La Vega and San Cristobal provinces.

Additional material examined. DOMINICAN REPUBLIC: La Vega: La Nevera, Parque Nacional Valle Nuevo (18°52′40″N, 70°43′02″W), 2000 m, 21.ix.1987, L. F. Armas, under stones, 1 ♀ ( BSC 625View Materials)GoogleMaps  . Parque Nacional Valle Nuevo (18°46′37.175″N, 70°38′21.822″W), 2260 m, 30.i.2005, R. Teruel, 1♀ immature ( BSC 513View Materials)GoogleMaps  . Parque Nacional Valle Nuevo (18°41′11.9″N, 70°35′37.4″W), 2041 m, 11.iv.2015. A. Sánchez ‒ Ruiz, J. Cabra, 3♀ 5 immatures ( IBSPAbout IBSP)GoogleMaps  . Cruce de Zocaba (18°51′34″N, 70°41′12″W), Constanza , 13.vii.1998, K. Polanco, S. Navarro & S. Medrano, 1♀ immature ( MNHNSD 09.476‒08)GoogleMaps  . Cienaga, Parque Nacional Armando Bermudez (19°10′32.355″N, 71°2′59.196″W), 1000 m, 19.vii‒2.viii.1995, S. Fit & J. Peck, 1♀ 1 immature (AMNH). Ditto, 1 immature ( AMNHAbout AMNH). Azua: Montilla, Parque Nacional Sierra Martin Garcia (18°23′51.02″N, 71°04′48.6″W), 406 m. 30.v.2014, F. Paz, P. Torres & G. de Los SantosGoogleMaps  , 1♀ 1 immature (MNHNSD 09.1425). Ditto, 1♂ 1 immature (MNHNSD 09.1424); 1♀ immature (MNHNSD 09.1422); 1♀ immature (MNHNSD 09.1423). San Cristobal: El Majagual (18°29′0″N, 70°13′0″W), 12.ix.1976, Gomez ‒ Marion, 1♀ ( MNHNSD 09.83‒07)GoogleMaps  .

Diagnosis. Males and females with several light grayish, irregular chevron stripes, extending dosolaterally on the abdomen ( Fig. 18A, D View Figure ). Males resemble similar congeners Nops pallidus  n. sp. and Nops siboney  by having a short and strongly curved embolus, with a sclerotized margin, but can be distinguished by having a greater and pointed sclerotized margin on the embolar tip ( Fig. 18B‒C View Figure ). Females can be distinguished by a receptaculum with narrow invagination and uterus externus with wide base ( Fig. 18F View Figure ).

Description. Male (holotype): Carapace dark orange. Chelicerae, labium, coxae and legs orange. Endites and sternum light orange. Abdomen light gray, dorsally with several light grayish, irregular chevron stripes, extending dosolaterally on the abdomen, forming a pattern ( Fig. 18A View Figure ), and ventrally with several dark grayish, irregular little spots at median part and dark grayish at distal part around the spinnerets. Anal tubercle and spinnerets light gray. Total length 7.5. Carapace 4.90 long, 2.9 wide. Sternum 2.35 long, 1.85 wide. Leg measurements: I: 3.40; II: 3.15; III: 2.9; IV: 3.55. Posterior unpaired claws short, as in other three‒clawed spiders. PLS same size as PMSAbout PMS. Palp with a short and strongly curved embolus, with a pointed sclerotized margin (sm) on embolar tip ( Fig. 18B‒C View Figure ).

Female ( MNHNSDAbout MNHNSD 09.1425): Carapace, chelicerae, labium, legs, coxae, endites and sternum as in male. Abdomen light grayish with a dorsal and ventral pattern similar to the male ( Fig. 18D View Figure ). Total length 7.75. Carapace 4.95 long, 3.1 wide. Sternum 2.4 long, 1.9 wide. Leg measurements: I: 3.60; II: 3.35; III: 3.0; IV: 3.85. Posterior unpaired claws and PLS as in male. External genital area with weakly sclerotized anterior plate and lep, unremarkable ess ( Fig. 18E View Figure ). Internal genitalia with narrow invagination on receptaculum and uterus externus with wide base ( Fig. 18F View Figure ).

Variation. Specimens from Parque Nacional Valle Nuevo have the abdomen green bluish, with dorsolateral abdominal bands narrower than other specimens examined.

Natural history. Like Nops enae Sánchez  ‒Ruiz, the only Caribbean species found over 1000 m above sea level, specimens of N. gertschi  from Valle Nuevo were also collected under the bark of the trunks of Pinus occidentalis Sw  at 2254 m. This is the greatest elevation record for a Caribbean caponiid.

Distribution. Known only from localities in Dominican Republic ( Fig. 19A View Figure ).


American Museum of Natural History


Museo Nacional de Historia Natural, Santo Domingo


Instituto Biologico de Sao Paulo


Prirodonamen Muzej Skopje














Nops gertschi Chickering, 1967

Sánchez-Ruiz, Alexander & Brescovit, Antonio D. 2018


Nops gertschi

Chickering, 1967 : 9 Ruiz, 2004 : 96