Nops ursumus 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 : 64

Nops ursumus Chickering, 1967

Figures 42A‒F ; 43A‒L

Nops maculata: Banks, 1929: 55 (not Nops maculata Simon ).

Nops ursumus Chickering, 1967: 16 , figs 20–21. Male holotype from Barro Colorado Island (9°9′19″N, 79°50′54″W), Canal Zone, Panama, berlese funnel, iv–vi 1950, J. Zetek ( MCZ 23413) ; female paratype, same data as holotype, 15.i.1958, A. M. Chickering ( MCZ 128576 ) ; male paratype, same data as holotype ( MCZ); all types examined.

Remarks. The specimen recorded from Panama as Nops maculata by Banks (1929) was transferred to Nops ursumus by Chickering (1967). This specimen is an immature female but has the diagnostic abdominal dorsal pattern of Nops ursumus .

Additional material examined. PANAMA : Panamá: Barro Colorado Island (9°9′19″N, 79°50′54″W), Canal Zone, vi.1950, A. M. Chickering, 4 immatures ( MCZ 128580 ) . Ditto , iv‒vi.1950, J. Zetek, 1♂ 3♀ 3 immatures ( MCZ 128587 ) . Ditto , x‒xii.1941, J. Zetek, 1♂ 1♀ ( MCZ 128583 ) . Ditto , vii.1943 ‒ iii.1944, J. Zetek, 1 immature ( MCZ 128581 ) . Ditto , vi‒viii.1949, J. Zetek, 1♀ ( MCZ 128590 ) . Ditto , 15.iii.1964, A. M. Chickering, 1 immature ( MCZ 128579 ) . Ditto , vii.1936, A. M. Chickering, 3 immatures ( MCZ 128582 ) . Ditto , 16.viii.1954, A. M. Chickering, 1 immature ( MCZ 128591 ) . Ditto , viii.1950, A. M. Chickering, 1♀ ( MCZ 128578 ) . Ditto , 16.vi‒15.vii.1934, A. M. Chickering, 6 immatures ( MCZ 128 585) . Ditto , vii.1954, A. M. Chickering, 5 immatures ( MCZ 128584 ) . Ditto , 7.ix.1930, 1 immature ( AMNH) . Ditto , xii.1937 ‒ i.1938, F. J. Ryan, 1♂ 1♀ (for SEM) ( AMNH) . Ditto , 8.i.1938, 1 immature ( AMNH) . Ditto , 18.i.1976, S. Levings, 1♀ ( USNM) . Ditto , 4.vi.1977, S. Levings, 2 immatures ( USNM) . Ditto , 22.ii.1976, S. Levings, 1♀ ( USNM) . Ditto , 30.i.1977, S. Levings, 1 ♀ ( USNM) . Ditto , 7.iii.1976, S. Levings, 1♀ ( USNM) . Ditto , 16.v.1976, S. Levings, 1 immature ( USNM) . Ditto , 30.v.1976, S. Levings, 1 immature ( USNM) . Ditto , xi.1947 ‒ i.1948, J. Zetek, 1♀ ( USNM) . Summit Gardens (9°3′55″N, 79°38′51″W), Canal Zone, 27.xii.1957, A. M. Chickering, 1 immature ( MCZ 128 577) . Forest Preserve (no more data), 4‒6.vii.1939, A. M. Chickering, 1 immature ( MCZ 128592 ) . Ditto , 8.i.1958, A. M. Chickering, 2♀ immatures ( MCZ 128588 ) . Ditto , vii.1954, A. M. Chickering, 1♀ immature ( MCZ 128589 ) . Colon: Santa Rosa , ix.1945, C.D. Michener, 1♀ immature ( AMNH) .

Diagnosis. Both sexes can easily be separated from members of all the other Central American congeners by having five, dark gray, irregular, transversal chevron stripes extending dosolaterally on the abdomen ( Fig. 42A, D ).

Description. Male (holotype): Carapace dark orange ( Fig. 42A ). Chelicerae, labium, endites, legs and coxae orange. Sternum orange, ligther than carapace. Abdomen light pale gray, with five, dark gray, irregular, transversal chevron stripes extending dosolaterally in the abdomen ( Fig. 42A ); ventrally with two irregular grayish spots close to spinnerets. Total length 9.8. Carapace 5.9 long, 3.5 wide. Sternum 4.5 long, 3.5 wide. Leg measurements: I: 4.4; II: 4.3; III: 3.8; IV: 4.6. Posterior unpaired claws elongated and dorsally reflexed ( Fig. 43I ). PLS same size as PMS. Palp with embolus distinctly shorter than tibia, thick and strongly curved; tip with two ventral short extensions ( Fig. 43C‒D ).

Female (MCZ 128576): Carapace, chelicerae, labium, legs, coxae, endites and sternum as in male, but a little darker ( Fig. 42D ). Abdomen as in male. Total length 10.2. Carapace 6.15 long, 3.9 wide. Sternum 4.75 long, 3.9 wide. Leg measurements: I: 4.55; II: 4.4; III: 3.95; IV: 4.75. Posterior unpaired claws and PLS as in male. External genital area with strongly sclerotized anterior plate, strongly sclerotized lep and remarkable ess ( Fig. 42E ). Internal genitalia with receptaculum without invagination and uterus externus with narrow base ( Figs 42F ; 43G‒I).

Natural history. Several specimens were captured with berlese in leaf litter. Apparently abundant in Barro Colorado Island.

Distribution. Known only from Panama ( Fig. 42G ).

Figures

FIGURE 42. Nops ursumus Chickering; A–C male (holotype); D–F female (paratype). A habitus, dorsal view. B left palp, prolateral view. C left palp, retrolateral view. D habitus, dorsal view. E external genital area, ventral view. F internal genitalia, dorsal view. G distribution map. Abbreviations: ap—anterior plate, ess—sclerotization around spiracles, lep—lateral extensions of posterior plate, pp—posterior plate, re—receptaculum, ue—uterus externus. Scale bars: 2 mm (A, D), 0.5 mm (B–C, E–F).

FIGURE 43. Nops ursumus Chickering; A–E male (MCZ128587); F–I female (MCZ128587). A left palp, prolateral oblique view. B left palp, ventral oblique view. C tip of embolus, ventral oblique view. D tip of embolus, prolateral oblique view. E tibial brush, prolateral view. F stridulatory pick, prolateral view. G internal genitalia, dorsal view. H receptaculum and uterus externus, dorsal view. I detail of receptaculum, dorsal view. J tarsus on left leg IV, prolateral view. K pretarsal claws on left leg IV, prolateral view. L same, anterior view. Abbreviations: aj—adesmatic joints, ete—embolar tip extensions, MtS –metatarsal dorsal stopper, re—posterior receptaculum, ue—uterus externus.