Neotrops nigromaculatus (Mello-Leitão, 1944) Grismado & Ramírez, 2013

Grismado, Cristian J. & Ramírez, Martín J., 2013, The New World Goblin Spiders Of The New Genus Neotrops (Araneae: Oonopidae), Part 1, Bulletin of the American Museum of Natural History 2013 (383), pp. 1-150 : 41-44

Neotrops nigromaculatus (Mello-Leitão, 1944) , new combination

Figures 27–33 , 40A–B ; map 2

Oonops nigromaculatus Mello-Leitão, 1944: 323 ;

female lectotype and female paralectotype from Argentina: Buenos Aires: José C. Paz, Rosas Costa leg., V.1941 (deposited in Museo de La Plata, MLP 15910, PBI _ OON 00015064) ; Grismado et al., 2010: 215). Reexamined.

DIAGNOSIS: Males share with those of N. yunga and N. rubioi the dorsal sclerotized stripe on the abdomen (figs. 27A, 28A), but differ by the narrower conductor, with undulated margin (fig. 40B). Females resemble those of N. rubioi and N. avalosi , but with a more gradually widened anterior receptacle (fig. 40A).

DESCRIPTION: See Grismado et al (2010, under Oonops ). Additional data are provided below.

FEMALE (PBI_OON 14807): Spinnerets (fig. 31D–G): ALS: with five spigots; PMS: with five spigots; PLS: with nine spigots. Genitalia: The posterior plate (erroneously interpreted as the posterior receptacle by Grismado et al., 2010) is highly domed, large, nearly circular, covering dorsally the anterior receptacle (fig. 33A–B). The accessory glands of the anterior receptacle are restricted to its base and have thin and long shafts (fig. 33C–D).

NEW RECORDS: ARGENTINA: Buenos Aires: Isla Martín García , riparian forest, June 06, 2004, to June 08, 2004, C. Scioscia et al., 1♀ ( MACN-AR 26075 PBI _ OON 15082) ; San Pedro: Reserva Municipal Vuelta de Obligado, barranca del Paraná , - 33.59722 °, - 59.80944 °, Oct. 11, 2009, N. López, C. Grismado, N. Olejnik, and I. Crudele coll., 18 ( MACN-AR 24301 PBI _ OON 15014). Entre Ríos: Dept. Colón : P. Nac. El Palmar, Arroyo Los Loros , - 31.861746 ° - 58.20934 °, 10 m, Aug. 07, 2011, Ramírez et al., MACN-Ar, 18 ( MACN-Ar 28003 PBI _ OON 42122) ; same collectors, - 31.86534 ° - 58.23745 °, stones, grassland with palms and low forest, 22 m, Aug. 06, 2011, to Aug. 08, 2011, 1♀ ( MACN-Ar 28163 PBI _ OON 42003), 1♀ ( MACN-Ar 27990 PBI _ OON 42103), 2♀ ( MACN-Ar 27991 PBI _ OON 42105), 28 ( MACN-Ar 27993 PBI _ OON 42106), 5♀ ( MACN-Ar 27993 PBI _ OON 42106), 3♀ ( MACN-Ar 27992 PBI _ OON 42109) ; same collectors, Sector Sur , - 31.88768 ° - 58.31186 °, 30 m, Aug. 07, 2011, 18 ( MACN-Ar 27986 PBI _ OON 42117), 1♀ ( MACN-Ar 27986 PBI _ OON 42117) ; Dept. Uruguay: Ruta Nac. 14, 7 km E Concepción del Uruguay, - 32.483128 ° - 58.308484 °, 26 m, Aug. 08, 2011, Ramírez et al., MACN-Ar, 1♀ ( MACN-Ar 28164 PBI _ OON 42015), 1♀ ( MACN-Ar 28019 PBI _ OON 42114) ; Diamante : P.N. Pre Delta, bosque de barranca, - 32.12034 ° - 60.62958 °, 26 m, May 23, 2011, to May 26, 2011, Rubio G., Izquierdo M. and Piacentini L., 18 ( MACN-Ar 28247 PBI _ OON 42076). Diamante: P.N. Pre Delta, bosque de barranca, - 32.12034 ° - 60.62958 °, 1♀ ( MACN-Ar 28246 PBI _ OON 42075) .

DISTRIBUTION (map 2): East central Argentina (Buenos Aires, Entre Ríos, and Córdoba provinces) and Uruguay (Rocha and Lavalleja), but see below, the comment under N. avalosi .

Figures

Fig. 27. Neotrops nigromaculatus (Mello-Leitão), male PBI_OON 14784. A. Habitus, dorsal view. B. Same, ventral view. C. Same, lateral view. D. Carapace, dorsal view. E. Cephalothorax, ventral view. F. Same, lateral view.

Fig. 28. Neotrops nigromaculatus (Mello-Leitão). (A, male PBI_OON 14797, B–D, male PBI_OON 42122). A. Carapace, anterior view. B–D. Palp. B. Dorsal view. C. Prolateral view. D. Retrolateral view.

Fig. 29. Neotrops nigromaculatus (Mello-Leitão), female PBI_OON 14784. A. Habitus, dorsal view. B. Same, ventral view. C. Same, lateral view. D. Carapace, dorsal view. E. Cephalothorax, ventral view. F. Same, lateral view. G. Habitus, anterior view. H. Epigynum, ventral view.

Fig. 30. Neotrops nigromaculatus (Mello-Leitão), female PBI_OON 14807. A. Carapace, dorsal view. B. Cephalothorax, ventral view. C. Same, lateral view. D. Ocular area, dorsal view. E. Same, anterior view.

Fig. 31. Neotrops nigromaculatus (Mello-Leitão), female PBI_OON 14807. A. Mouthparts, ventral view. B. Serrula, lateral view. C. Leg I, tarsal claws, prolateral view. D. Spinnerets, ventral view. E. Anterior lateral spinneret. F. Posterior median spinnerets. G. Posterior lateral spinneret.

Fig. 32. Neotrops nigromaculatus (Mello-Leitão) female, A–F (PBI_OON 14807), G (PBI_OON 42109). A. Palp, retrolateral view. B. Same, detail of the tarsal tip. C–G. Right leg I. C. Femur and patella, prolateral view. D. Tibia, prolateral view. E. Metatarsus, prolateral view. F. tarsus, prolateral view. G. Entire right leg I, prolateral view.

Fig. 33. Neotrops nigromaculatus (Mello-Leitão), female PBI_OON 14807. A. Internal female genitalia, dorsal view. B. Same, anterior view. C. Anterior recleptacle, anterior view. D. Same, detail of the gland ducts at the base. E. Anterior receptacle, detail of the distal part. Abbreviations: ar, anterior receptacle; pp, posterodorsal plate; tr, transverse ridges.

Fig. 40. Neotrops spp. genitalia, cleared. A–B, Neotrops nigromaculatus (Mello-Leitão), C–D, N. yunga, new species, E–F, N. rubioi, new species. A. Internal female genitalia, dorsal view (PBI_OON 14975), B. Male palp, retrolateral view (PBI_OON 14797), C. Internal female genitalia, dorsal view (PBI_OON 14885), D. Male palp, retrolateral view (PBI_OON 14765), E. Internal female genitalia, dorsal view (PBI_OON 43357), F. Male palp, retrolateral view (PBI_OON 43357). Abbreviations: ar, anterior receptacle; co, conductor; e, embolus; pp, posterodorsal plate; tr, transverse ridges; ue, uterus externus.