1964] 
Levi — Styposis and Pholcomma 
39 
Description. The whole spider is brownish, the abdomen is lighter 
on venter. The carapace is sclerotized. The posterior median eyes 
are largest, the anterior median eyes smallest. The anterior median 
eyes are two-thirds their diameter apart, almost touching laterals. 
The posterior median eyes are almost touching, less than one-quarter 
diameter from laterals. The chelicerae are very small, the shape of 
an equilateral triangle, and lack teeth. The abdomen is suboval with 
setae coming from sclerotized round spots on dorsum. The sides seem 
folded and there is a sclerotized ring around the spinnerets. The 
colulus is replaced by two setae. Total length 1.5 mm. Carapace 0.62 
mm long, 0.56 mm wide. Second patella and tibia 0.66 mm; third 
0.56 mm. Fourth femur, 0.66 mm, patella and tibia, 0.88 mm. 
The specimen is in poor physical condition. 
Diagnosis. This specimen is quite close to P. micro pun datum 
( Mello-Leitao) . The ducts of the genitalia are shorter (Figs. 17, 
18). Along with P. micropundatum this species may belong to the 
family Symphytognathidae ; its placement in Pholcomma is tentative. 
References Cited 
Levi, H. W. 
1957. The North American Spider genera Paratheridula, T ekellina, 
Pholcomma and Archerius (Araneae, Theriidae). Trans. Amer. 
Micros. Soc., 76: 105-115. 
1960. The spider genus Styposis (Araneae, Theridiidae) . Psyche 66: 13- 
19. 
1963. The American spiders of the genus Anelosimus (Araneae, Theri- 
diidae). Trans. Amer. Micros. Soc., 82: 30-48. 
Levi, H. W. and L. R. Levi 
1962. The genera of the spider family Theridiidae. Bull. Mus. Comp. 
Zool., 127: 1-72. 
