The genera of the spider family Theridiidae
Author
Levi, H. W., Levi, L. R.
text
Bulletin of the Museum of Comparative Zoology
1962
127
1
1
71
http://antbase.org/ants/publicaitons/LeviLevi1962Excerpt/LeviLevi1962Excerpt.pdf
journal article
LeviLevi1962Excerpt
6E92038A-8E18-476A-B914-00CAD84FC48B
ROBERTUS
O.P.-Cambridge Figures 290, 291
Carapace sclerotized, rounded in front, rather high; clypeus rounded. Chelicerae strong, with three large anterior teeth and two posterior denticles or teeth. Legs relatively short and strong; first subequal to fourth. First patella-tibia equal to carapace length or slightly shorter. Abdomen oval. Colulus large. Abdomen uniformly colored without pattern.
Palpus with all sclerites present, but reduced, and relatively simple in shape (probably secondarily) (Figs. 290, 291). Cymbium widest at proximal end, tapering to a relatively narrow tip. Paracymbial hook on margin (Fig. 291).
Separated from
Comaroma
by having eight eyes or anterior medians subequal to the others and from
Enoplognatha
by having several denticles on the posterior chelicerai margin, by not having male chelicerae enlarged, and by lacking a pattern on the dorsum of the abdomen.
Probably only Europe and North America.