Superfamily Argiopoidea 



Genus TRAB/EA (Tra-bae'a) 



The face is subquadrate, not at all or barely wider below than 

 above; the sides are straight; the anterior row of eyes is very 

 strongly procurved; and the anterior median eyes are much closer 

 to each other than to the anterior lateral eyes. 



Only a single species is found in our fauna; and this is one 

 of the smallest of the Lycosidae. 



Trabea aurantiaca (T. au-ran-ti'a-ca). — The female is only 

 one eighth inch or a little more in length; and the male is less than 

 one eighth inch long. The cephalothorax is black or blackish 

 brown, with a yellow median band which begins just back of the 

 second row of eyes and narrows to a point at the median furrow, 

 a yellow spot behind just under the front end of the abdomen, 

 and a narrow yellow stripe on each side. The abdomen is brownish 

 orange with a yellow spot in the middle tapering to a row of smaller 

 spots behind. 



This species occurs in New England, New York, and south to 

 the District of Columbia. 



Genus SOS1LAUS (So-sil'a-us) 



This genus differs from all other members of the Lycosidae 

 found in our fauna in having the anterior tibiae armed below with 

 five pairs of long slanting spines; and the metatarsi are armed 

 with four pairs of similar spines. 

 The four anterior eyes are subcon- 

 tiguous and are in a gently recurved 

 row; the anterior median eyes are 

 at least twice as large as the an- 

 terior lateral (Fig. 727). 



Sosilaus spiniger (S. spin'i-ger). 

 — This is the only known species 

 of the genus and of it only a single 

 specimen is known; this was taken Fig. 727. 



in Louisiana. It is a male and face of sosnvus spiniger 



(after Simon) 



measures a little less than one sixth 



inch in length. The cephalothorax is "fulvoriifous, smooth 

 and subglabrous, a narrow marginal fuscous line and the pars 

 thoracica marked irregularly with short radiating stripes. Ab- 

 domen fusco-testaceous, paler in front and below." 



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