Sparianthina pumilla ( Keyserling, 1880 ) Jaeger & Rheims & Labarque, 2009

Jaeger, Peter, Rheims, Cristina & Labarque, Facundo, 2009, On the huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 from South and Central America (Araneae, Sparassidae), ZooKeys 16 (16), pp. 115-147 : 123-125

Sparianthina pumilla ( Keyserling, 1880) comb. n.

Figs 22-33

Heteropoda pumilla Keyserling, 1880: 237 , pl. 6, fig. 129 (description ♁ and ♀; Syntypes, 1 ♁, 3 ♀♀, 1 juv., Colombia, Bogota [4°35’56.33”N, 74°3’56.96”W], NHM 3099-3102, examined). Petrunkevitch 1911: 488. Roewer 1954: 721. Bonnet 1957: 2194. Platnick 2009.

Note. The juvenile is considered as belonging to the type series, although it was not mentioned in the original description. As it was together with the adult specimens in one vial, Keyserling had seen and identified it as belonging to the same species by writing the label to all specimens and not excluding the juvenile from the type series ( International Commission on Zoological Nomenclature 1999: 72.4.1). For reasons of stability and considering the potential sympatric diversity, the male syntype is herewith designated the lectotype, the female syntypes and the juvenile syntype as paralectotypes.

Diagnosis. Males: embolus filiform, distinctly bent (roughly at a right angle); additional apophysis between embolus and conductor, blunt to rounded, widened distally; DTA massive in lateral views, bluntly rounded, pointing retrolatero-distally in ventral view; RTA with two appendages, one smaller pointing ventrally, the other larger, stout and slightly pointed and pointing distally ( Figs 22-24 ). Females: epigynal furrows present over the entire length of epigyne, forming two rounded fields, a larger anterior and a smaller posterior one ( Figs 27-28 ); fertilisation ducts very slender running posteriorad, turning at epigastric furrow; glandular appendages dorsally at anterior part of internal duct system, inconspicuous ( Figs 29-30 ).

Redescription. Male (Lectotype). Total length 6.8. Prosoma: 3.1 long, 3.0 wide. Opisthosoma: 3.5 long, 2.1 wide. Eye diameters and interdistances: AME 0.16, ALE 0.22, PME 0.18, PLE 0.20, AME–AME 0.12, AME–ALE 0.08, PME–PME 0.24, PME–PLE 0.24, AME–PME 0.22, ALE–PLE 0.22. Legs: I: femur 4.4, patella 1.6, tibia 4.7, metatarsus 4.3, tarsus 1.6, total 16.6; II: 5.0, 1.6, 5.1, 4.8, 1.5, 18.0; III: 4.0, 1.3, 3.6, 3.7, 1.3, 13.9; IV: 4.3, 1.3, 4.0, 4.4, 1.8, 15.8.

Palp as in diagnosis. Embolus arising from tegulum at a 9:30-o’clock-position, conductor at a 10-o’clock-position. Tegulum extending strongly beyond cymbium. Sperm duct running submarginally ( Fig. 23 ).

Female (Paralectotype). Total length 9.8. Prosoma: 3.8 long, 3.5 wide. Opisthosoma: 5.6 long, 3.8 wide. Eye diameters and interdistances: AME 0.20, ALE 0.26, PME 0.20, PLE 0.28, AME–AME 0.14, AME–ALE 0.08, PME–PME 0.32, PME–PLE 0.28, AME–PME 0.22, ALE–PLE 0.22. Legs: I: femur 4.2, patella 1.6, tibia 3.9, metatarsus 3.4, tarsus 1.3; II: 4.5, 1.7, 4.2, 3.6, 1.4, 15.4; III: 3.7, 1.4, 3.1, 3.0, 1.1, 12.3; IV: 4.2, 1.4, 3.5, 3.6, 1.2.

Copulatory organ as in diagnosis. Epigynal field rounded, as long as wide. Posteri- or margin of epigyne with distinct lobe. Copulatory openings situated anteromedially of anterior median field ( Figs 27-28 ). Internal duct system less complex than that of S. selenopoides , with wound part of internal duct system transversely arranged. Fertilisation ducts long, bent and narrow ( Figs 29-30 ).

For further details see Keyserling (1880).

Distribution. Colombia (known only from the type locality).

Figures

Figures 22-33. Sparianthina pumilla (Keyserling, 1880) comb. n. from Colombia (22-26 ♁ lectotype 27-33 ♀ paralectotypes).22-24 Left ♁ palp (22 prolateral 23 ventral 24 retrolateral) 25, 32 Eyes, dorsal 26, 33 Chelicerae, ventral 27-28 Epigyne, ventral 29 Internal duct system, dorsal 30 Schematic course of internal duct system, dorsal 31 Habitus, dorsal.