198 
Psyche 
[September 
The species descriptions should be considered in conjunction with 
the above generic description which applies to each of the three spe- 
cies. 
The measurements made are the same as those made in the North 
and Central American revision (Reiskind, 1969) — all to the nearest 
0.05 mm. except genitalic measurements which are to the nearest 
0.0 1 mm. 
The white plumose hair patterns (see Figs. 4-9) are often partially 
rubbed off and should be used dignostically with special care. 
Psellocoptus flavostriatus Simon 
Figures 6, 7, 14. 
Psellocoptus flavostriatus Simon, 1896, Ann. Soc. Entomol. Belgium 40: 404, 
$, $. Syntypes from Colonia Tovar, Venezuela (probably in Aragua 
State) ; in the Museum national d’Histoire natureile, Paris, examined. 
Male lectotype chosen. 
Male 
Measurements. Based on lectotype and one male, lectotype listed 
first, range of both follows: carapace length 4.45 mm, 4.05-4.45 mm; 
carapace width 2.35 mm, 2.00-2.35 mm; carapace index (carapace 
width/carapace length X 100) 53, 50-53; sternum length 2.00 mm, 
1.95-2.00 mm; sternum width 1.30 mm, 1.15-1.30 mm; sternum 
index (sternum width/sternum length X 100) 65, 60-65. 
Femur IV length 4.55 mm, 4.25-4.55 mm; femur IV width (max. 
dorso-ventral ) 0.50 mm, 0.45-0.50 mm; leg thickness index (femur 
IV width/femur IV length X 100) 11.2, 10.5-11.2; leg length 
index (femur IV length/carapace length X 100) 103, 103-105. 
Abdomen length 4.90 mm, 4.75-4.90 mm; abdomen width 1.65 mm, 
1.40-1.65 mm; abdomen index (abdomen width/abdomen length X 
100) 34, 29-34. 
Description. Carapace red-brown; surface shiny and slightly 
granulated. Cephalic region width 81% of maximum carapace width. 
White plumose hair pattern similar to that in Figure 4 but some- 
what more extensive. 
Dorsum of abdomen red-brown with some lighter speckling, with 
a moderate red-brown anterior dorsal sclerite extending about 32% 
the length of the abdomen. A complex white plumose hair pattern 
as illustrated in Figures 6 and 7. Area of epigastric sclerite around 
gonopore light yellow and shiny. A trace of an inframammilliary 
sclerite. 
Sternum red-brown, slightly granulated surface with sparce long 
thin simple hairs. 
Chelicerae red-brown. The apices of the endites and chelicerae 
with heavy scopulae. Face of chelicerae with scattered small tubercles. 
