296 
Psyche 
[September 
Eriophora edax (Blackwall) 
Map 3 ; Figures 35-48 
Epeira edax Blackwall, 1863, Ann. Mag. Natur. Hist. ser. 3, vol. 11, p. 30. 
Female and male syntypes from Rio de Janeiro, Brazil, lost, probably 
destroyed. 
Eriophora edax, — F. P.-Cambridge, 1903, Biologia Centrali-Americana, 
Araneidea, vol. 2, p. 464, pi. 44, figs. 1, 2, $, $. Petrunkevitch, 1930, 
Trans. Connecticut Acad. Sci., vol. 30, p. 325, figs. 205-207, $, $. 
Aranea edax cauca Strand, 1915, Arch. Naturgesch., vol. 81, p. 111. Juve- 
nile holotype from Popayan or Cauca, Colombia in the Senckenberg 
Museum, Frankfurt, examined, new synonymy. 
Note. Blackwall’s rather detailed description matches specimens 
of this species. The unusual macrosetae in a line across the fourth 
coxa of males are mentioned by Blackwall. The proportions given 
by Blackwall fit. The Blackwall types are not known to exist. There 
are no recent collections of this species from Rio de Janeiro (open 
circle Map 3) but there are some from the east side of the Andes 
in the Amazon basin in Peru. Thus the recognition of the Blackwall 
name is not in doubt. Strand’s specimen is a characteristic specimen, 
a juvenile, of this species. 
Description. Female from Arizona. Carapace yellow-brown with 
a median longitudinal dark brown band and irregular brown spots. 
Clypeus dark brown, as is median eye area not including the pos- 
terior median eyes but including the anterior lateral eyes. Labium 
and endites dark brown, distally white. Sternum marbled brown. 
Coxae brown, bordered by dark brown. Legs banded with narrow 
bands, more distinct on venter. Abdomen with black and white pig- 
ment on dorsum (Figs. 41-47). Venter with a black mark wider 
than long, surrounded by white. Spinnerets dark brown. Anterior 
median eyes largest, posterior medians the radius of anterior medians 
in size, anterior laterals 0.8 diameters of anterior medians, posterior 
lateral eyes the radius of anterior medians. Anterior median eyes 
less than one diameter apart, posterior median eyes a little more than 
one diameter apart. The abdomen has a median dorsal hump and 
a smaller hump anteriorly. Total length 14 mm. Carapace 6.2 mm 
Figs. 35-48. Eriophora edax (Blackwall). 35. Male, left palpus, mesal 
view. 36. Embolus. 37. Epigynum. 38-40. Base of epigynum. 38. Ventral. 
39. Posterior. 40. Lateral. 41-47. Female, abdomen. 41. Ventral. 42-44. 
Dorsal view. 42. (Arizona). 43. (Veracruz). 44. (Loreto, Peru). 45-47. 
Lateral view. 45. (Arizona). 46. (Puerto Rico). 47. (Veracruz). 48. 
Male, fourth coxae and trochanters. 
Size Indicators : Figs. 35-40, 0.5 mm. Figs. 41-47, 1 mm. 
