Sparianthina milleri ( Caporiacco, 1955 ), 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: 128-130

publication ID

http://doi.org/ 10.3897/zookeys.16.236

publication LSID

lsid:zoobank.org:pub:1DBBDBA2-6036-4675-984F-E640BC2A1575

DOI

http://doi.org/10.5281/zenodo.3791888

persistent identifier

http://treatment.plazi.org/id/039787A5-FFE2-730E-6ED0-2D80FDB2FAF9

treatment provided by

Plazi

scientific name

Sparianthina milleri ( Caporiacco, 1955 )
status

comb. n.

Sparianthina milleri ( Caporiacco, 1955)   comb. n.

Figs 55-64 View Figures 55-64 , 76 View Figures 74-79

Macrinus milleri Caporiacco, 1955: 404   , figs 57a–b (description ♁; holotype ♁, Venezuela, Aragua, Rancho Grande, 1.VIII.1949, Racenis leg., MUCV 810, in MBUC, examined). Brignoli 1983: 594. Platnick 2009.

Further material examined. VENEZUELA.1 ♁, Rancho Grande , 24.VI.–1.VII.1945, W. Beebee ( AMNH)   ; 1 ♁, Aragua, Maracay, Rancho Grande , 1.–10.VIII.1987, Bordan & Peck ( AMNH)   ; 2 ♁♁, 1.–10.VIII.1987, Bordan and Peck ( AMNH). 1 ♀ ( PJ 2855), Aragua, Henri Pittier National Park, nr Rancho Grande , 1100-1800 m, 12.–30.XI.1997, T. Pape leg. ( NHRS)   .

Diagnosis. Males: embolus massively widened, conductor directed prolaterally; DTA with well differentiated tip in ventral view pointing retrolatero-distally; sperm duct with retrolateral S-shaped bend; RTA massive with various small appendages, palpal tibia appearing triangular ( Figs 55-57 View Figures 55-64 ). Females: epigynal furrows present over entire length of epigyne (but inconspicuous in posterior part), anterior epigynal furrow situated laterally close to margin of epigynal field, posterior furrows S-shaped, running from lateral to median body axis ( Fig. 58 View Figures 55-64 ); fertilisation ducts situated at epigastric furrow; glandular appendages long and massive, pointing in an anterior direction, converging ( Figs 59-61 View Figures 55-64 ).

Redescription. Male (Holotype, MUCV 810). Total length 5.7. Prosoma: 2.7 long, 2.7 wide. Opisthosoma: 2.6 long, 2.0 wide. Eye diameters and interdistances: AME 0.24, ALE 0.16, PME 0.22, PLE 0.22, AME–AME 0.10, AME–ALE 0.06, PME–PME 0.24, PME–PLE 0.20, AME–PME 0.18, ALE–PLE 0.24. Legs: I: femur 4.0, patella 1.3, tibia 4.4, metatarsus 3.7, tarsus 1.6, total 15.0; II: 4.6, 1.4, 4.8, 4.1, 1.6, 16.5; III: 3.6, 1.1, 3.3, 3.3, 1.2, 12.5; IV: 4.2, 1.0, 3.8, 4.2, 1.6, 14.8.

Palp as in diagnosis. RTA massive, with wide dorsal branch bearing a small distalmedian projection. Ventral branch bifid. Embolus and conductor arising from tegulum at a 9-o’clock-position ( Figs 55-57 View Figures 55-64 ).

Colouration generally brown ( Fig. 76 View Figures 74-79 ). Specimen very badly preserved.

Description. Female. Total length 6.6. Prosoma: 3.0 long, 2.9 wide, anterior width 1.5. Opisthosoma: 3.6 long, 2.5 wide. Eye diameters and interdistances: AME 0.17, ALE 0.25, PME 0.22, PLE 0.27, AME–AME 0.11, AME–ALE 0.05, PME–PME 0.25, PME– PLE 0.24, AME–PME 0.25, ALE–PLE 0.22, clypeus AME 0.33, clypeus ALE 0.29. Palp: femur 1.2, patella 0.7, tibia 1.2, metatarsus -, tarsus 1.7, total 4.8; legs: I 3.5, 1.4, 3.7, 2.8, 1.3, 12.7; II: 4.0, 1.5, 3.9, 3.1, 1.4, 13.9; III: 3.2, 1.2, 2.9, 2.6, 1.1, 11.0; IV: 3.5, 1.0, 3.2, 3.2, 1.4, 12.3. Leg formula 2143. Spination: palp 131, 101, 2121, 1014; femur I–III 323, IV 321; patella 000; tibia 2024; metatarsus I–II 0014, III 2014, IV 3036. Ventral tarsus III and IV with bristles in two rows, tarsus IV with more and stronger bristles. Chelicerae with ca. 15 denticles in a row, basally with two denticles beside this row, 3 (+ 1 small) anterior and 6 posterior teeth ( Fig. 63 View Figures 55-64 ). Palpal claw with 9-10 teeth ( Fig. 64 View Figures 55-64 ). Spinnerets cylindrical.

Copulatory organ as in diagnosis. Epigynal field roughly rectangular, with lateral outgrowths ( Fig. 58 View Figures 55-64 : arrows) and without anterior bands, longer than wide. Posterior lobe of epigyne almost rectangular with rounded edges, distinctly extending beyond the epigastric furrow ( Fig. 58 View Figures 55-64 ). Internal duct system with wide ducts throughout and with reticulate structure close to glandular pores ( Figs 59-61 View Figures 55-64 ).

Colouration. Body and appendages yellowish-brown. Dorsal prosoma with darker striae and posterior-marginal band, fovea marked. Legs with indistinct spine patches. Sternum, labium, ventral gnathocoxae and coxae bright pale yellow. Opisthosoma without pattern.

Distribution. Known only from the type locality.

Relationship. As diagnostic characters for Sparianthina   are congruent with those found in S. milleri   comb. n. (shifted tegulum, complex RTA, membranous conductor flexible, epigynal furrows only in anterior part, internal duct system of females with glandular appendages, etc.) the species is transferred to this genus. Relationships within the genus cannot be recognised.

AMNH

American Museum of Natural History

NHRS

Swedish Museum of Natural History, Entomology Collections

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Sparianthina

Loc

Sparianthina milleri ( Caporiacco, 1955 )

Jaeger, Peter, Rheims, Cristina & Labarque, Facundo 2009
2009
Loc

Macrinus milleri Caporiacco, 1955: 404

Caporiacco L di 1955: 404
1955