1962] 
Brady — Sosippus 
145 
Sosippus mexicanus Simon 
Figures 6, 23, 24, 46, 47. Map 1. 
Sosippus mexicanus Simon, 1888, Ann. Soc. Ent. France, 8 (6):206. Female 
holotype from Mexico in the Paris Museum. Simon, 1898, Histoire 
naturelle des Araignees, 2 (2) :325, 327. F. P. -Cambridge, 1902, Biologia 
Centrali-Americana, Araneidea, 2:332, p. 31, figs. 30, 31a-c. Banks, 1909, 
Proc. Acad. Nat. Sci. Philadelphia, 61 :2 1 7. Bryant, 1948, Psyche, 
55 (2) :55. Roewer, 1954, Katalog der Araneae 2:314. Bonnet, 1958, 
BibJiographia Araneorum, 2(4):4093. Roewer, 1959, Exploration du 
Parc National de l’Upemba, Araneae Lycosaeformia II (Lycosidae), p. 
1004. 
Structure. For comparison of certain diagnostic measurements of 
S. mexicanus to other species see Table 1. 
Posterior cheliceral margin with three teeth on each side. Of two 
females examined one had 3-3 posterior cheliceral teeth, the other 4-3. 
The male specimen, described by F. Pickard-Cambridge (1902), has 
3-3 posterior cheliceral teeth. According to F. P.-Cambridge all the 
specimens that he examined had 3-3 posterior cheliceral teeth. 
Tibial spination in the two females examined was the same as in S. 
calif ornicus with the following exceptions: ventral spines on leg II 
1-2-2, dorsal spines on tibia III and IV 1-1. These spines slightly 
smaller than the lateral spines. 
Clypeus height of one female subequal to the diameter of the AME, 
in the other greater than the diameter of the AME. Clypeus height 
of the male subequal to the diameter of the AME. 
Labium. Length subequal to width in the male and two females. 
Color. Female. Pattern illustrated in Figure 6. Carapace brown, 
darker in the eye region with the eyes circled in black. A thin pale 
brownish yellow median stripe beginning immediately behind the 
second eye row and continuing to the posterior edge of the carapace. 
Broad marginal stripes of the same color starting at the edge of the 
clypeus and extending the length of the carapace. The marginal 
stripes, as well as the median stripe, clothed with short white hair. 
Darker brown lines radiating from the thoracic groove. Chelicerae 
dark reddish brown. 
Sternum brownish yellow. Labium and endites darker reddish 
brown. Legs brownish yellow without distinct darker markings. 
Dorsum of the abdomen with a wide brown median stripe, enclosed 
by two very light broken lines in the anterior region. Posteriorly the 
lines are broken-up into a series of dots, the broken lines and dots 
accented with white hair. Lateral to the light lines and dots the 
dorsum is brownish yellow mottled with brown. Venter of the abdo- 
