Pseudonemesia Caporiacco, 1955

Dupérré, Nadine & Tapia, Elicio, 2025, Revision of the Ecuadorian Microstigmatidae (Araneae: Mygalomorphae), with the description of six new species, European Journal of Taxonomy 1007, pp. 87-132 : 90-91

Genus Pseudonemesia Caporiacco, 1955

Type species

Pseudonemesia parva Caporiacco, 1955 by monotypy.

Composition

Pseudonemesia kochalkai Raven & Platnick, 1981 , P. parva Caporiacco, 1955 , P. tabiskey Indicatti & Villareal, 2016 and P. scutata sp. nov.

Diagnosis

For a complete diagnosis see Indicatti & Villarreal (2016). Pseudonemesia is differentiated from Spelocteniza and Pastaza gen. nov. by their tarsal organ being semi-flat, about two fifths away from apex with concentric ridges (see Raven & Platnick 1981: figs 31–32; Indicatti & Villarreal 2016: fig. 5a, d) while in Spelocteniza and Pastaza gen. nov. the tarsal organ is highly elevated, situated at the apex of tarsus ( Figs 25A , 29E ); presence of clavate setae on abdomen ( Indicatti & Villarreal 2016: figs 6b, 9b) absent in the other two genera. Furthermore, males of Pseudonemesia differ from those of Spelocteniza and Pastaza gen. nov. by the presence of a dorsal abdominal scutum ( Fig. 2C , arrow), and a unique large clasping spur accompanied by short and apically rounded spine ( Fig. 2D , arrow); both characters are absent in the males of the latter genera ( Figs 6A , 7D , 15A , 16C ).

Distribution

Venezuela, Colombia and Ecuador.

Figures

Fig. 25. Spelocteniza ashmolei Gertsch, 1982, ♀, holotype (AMNH_IZC 00357161), SEM. A. Palp tarsus, dorsal view (arrow points to tarsal organ). B. Tarsus III, dorsal view (arrow points to tarsal organ). C. Tarsus IV trichobothria, dorsal view. D. Tarsus II cuticle, dorsal view.

Fig. 29. SEM. A. Spelocteniza pampenita sp. nov., ♂, paratype (ZMH-A0030710; ZMH), tarsus II, dorsal view (arrow points to tarsal organ). B–D. Pastaza aureliae gen. et sp. nov., ECFN 7948 (QCAZ) B. Tarsus III, dorsal view. C. Tarsus III, dorsal view (arrow points to tarsal organ). D. Tarsal organ II, dorsal view. E. Pastaza roberti gen. et sp. nov. (ZMH-A0030714), tarsus I, dorsal view. F. Pastaza vegai gen. et sp. nov., (QCAZ), tarsus I, dorsal view (arrow points to tarsal organ).

Fig. 2. Pseudonemesia scutata sp. nov., ♂, holotype (ECFN 6985; QCAZ). A. Carapace, dorsal view. B. Sternum, ventral view. C. Abdomen, dorsal view (arrow points to scutum). D. Leg I, prolateral view (arrow points to rounded spine). Scale bars: 0.5 mm.

Fig. 6. Spelocteniza pampenita sp. nov., ♂, holotype (ECFN 11665; QCAZ). A. Habitus, dorsal view. B. Habitus, ventral view. Scale bars: 1.0 mm.

Fig. 7. Spelocteniza pampenita sp. nov., ♂, holotype (ECFN 11665; QCAZ). A. Carapace, dorsal view. B. Sternum, ventral view. C. Chelicerae (arrow points to intercheliceral tumescence). D. Leg I, retrolateral view. Scale bars: A–B = 1.0 mm; C–D = 0.5 mm.

Fig. 15. Pastaza roberti gen. et sp. nov., ♂, holotype (ECFN 11674; QCAZ). A. Habitus, dorsal view. B. Habitus, ventral view. Scale bars: 5.0 mm.

Fig. 16. Pastaza roberti gen. et sp. nov., ♂, holotype (ECFN 11674; QCAZ). A. Carapace, dorsal view. B. Sternum, ventral view. C. Tibia I, retrolateral view. Scale bars: 1.0 mm.