Attacobius blakei Bonaldo & Brescovit, 2005

Pereira-Filho, José Moisés B., Saturnino, Regiane & Bonaldo, Alexandre B., 2018, Five new species and novel descriptions of opposed sexes of four species of the spider genus Attacobius (Araneae: Corinnidae), Zootaxa 4462 (2), pp. 211-228 : 224

Attacobius blakei Bonaldo & Brescovit

Figs 19–21 ; Map 2

Attacobius blakei Bonaldo & Brescovit, 2005: 51 , figs 11–13 (♂ holotype from Estação Científica Ferreira Penna , Caxiuanã National Forest, Melgaço, Pará, Brazil, 1-11.VI.2001, A.B. Bonaldo et al. leg. ( MPEG 0152 ), re-examined.

Diagnosis. Females of A. blakei are similar to those of A. demiguise n. sp. and A. uiriri ( Figs 13, 15, 16, 18 ) by the medially interrupted epigynal ventral plate. They can be distinguished from those of A. demiguise n. sp. by the absence of secondary spermathecae and from those of A. blakei by the narrower copulatory ducts ( Figs 16–18 ).

Description. Male. Described by Bonaldo & Brescovit, 2005: 51, figs 11–13.

Female (MPEG 34841). Carapace pale yellow, with black spot on each anterior median eye area; chelicerae pale yellow with fangs darker; endites pale yellow with white apex; labium pale yellow; sternum pale yellow with pale brown margins; legs yellow; abdomen pale grey. Total length 3.56. Carapace 1.51 long, 1.21 wide, 0.47 high. Clypeus 0.11 high. Eye diameters and interdistances: AME 0.11, ALE 0.07, PME 0.09, PLE 0.08; AME–AME 0.06, AME–ALE contiguous, PME–PME 0.13, PME–PLE 0.06, ALE–PLE contiguous. MOQ length: 0.23, front width: 0.27, back width: 0.25. Chelicerae 0.57 long, with 3 promarginal and 2 retromarginal teeth. Sternum 0.82 long, 0.87 wide. Abdomen 1.85 long, 1.30 wide. Leg measurements: I: femur 1.30/ patella 0.52/ tibia 1.12/ metatarsus 1.17/ tarsus 0.87/ total 4.98. II: 1.23/ 0.50/ 1.07/ 1.18/ 0.90/ 4.88. III: 1.24/ 0.45/ 1.05/ 1.24/ 0.87/ 4.85. IV: 1.51/ 0.51/ 1.30/ 1.52/ 0.96/ 5.80. Leg spination: I: femur d1-1-0, p0-0-1, r0, v0; tibia d0, p0, r0, v3-2 -2; metatarsus d0, p0, r0, v2-2 -0. II: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v2-2 -2; metatarsus d0, p0, r0, v2-2 -0. III: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v0. IV: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v0. Epigynum: ventral surface medially excavated; ventral plate medially interrupted; posterior transverse septum absent; dorsal extension of epigynal posterior plate reduced; copulatory openings ventral, medially placed; copulatory ducts translucent, spermathecae separated from each other; primary spermathecae large, rounded; secondary spermathecae absent ( Figs 19–21 ).

Distribution. Known only from Caxiuanã National Forest Pará, Brasil (Map 2).

Material examined. BRAZIL: Pará: Melgaço, Estação Científica Ferreira Penna , Caxiuanã National Forest , 01°44'18.02"S, 51°27'48.01"W, 2♀, 21-31.X.2003, Equipe MPEG leg. ( MPEG 34841 , 34842 ).

Figures

FIGURES 19–24. Attacobius spp., female epigyna: 19–21. A. blakei Bonaldo & Brescovit, 2005, 19. ventral view, 20. posterior view, 21. dorsal view; 22–24. A. tremembe n. sp., 22. ventral view, 23. posterior view, 24. dorsal view. Abbreviations: CD, copulatory duct; EVP, epigynal ventral plate; FD, fertilization duct; PS, primary spermathecae; SS, secondary spermathecae.

FIGURES 13–18. Attacobius spp., female epigyna: 13–15. A. demiguise n. sp., 13. ventral view, 14. posterior view, 15. dorsal view; 16–18. A. uiriri Bonaldo & Brescovit, 2005, 16. ventral view, 17. posterior view, 18. dorsal view. Abbreviations: CD, copulatory duct; FD, fertilization duct; PS, primary spermathecae; SS, secondary spermathecae.