22 
Psyche 
[March 
2b. Seminal receptacles oval or spherical; epigynum and palpus 
otherwise or if similar, not North American 3 
3a. Males 4 
3b. Females 17 
4a. Palpus with a large mesal projecting radix (1957b, figs. 59, 
68 ) 5 
4b. Palpus otherwise 6 
5a. Embolus short, radix longer than half length of bulb (1957b, 
fig. 59) > southern Canada to central Mexico 
S. albomaculata (DeGeer) 
5b. Embolus long, radix less than half length of bulb (1957b, fig. 
68) ; southern Canada to central Mexico, common in north- 
eastern states S. americana (Emerton) 
6a. Palpal tibia one and one-half times length of cymbium (1957b, 
fig- 76) ,* probably introduced and widespread in United States, 
rare in South America S. triangulosa (Walckenaer) 
6b. Palpal tibia as long as or shorter than cymbium 7 
7a. Palpal embolus visible as a prominent loop supported by con- 
ductor (1957b, fig. 73); probably cosmopolitan, Florida, 
Caribbean S. erigoniformis (O. P.-Cambridge) 
7b. Palpus otherwise 8 
8a. Palpus with a transverse, ventral embolus base and a prominent 
short thread-shaped embolus portion (1957b, fig. 74); cosmo- 
politan ; coast states, wide-spread in Mexico and South America 
S. grossa (C. L. Koch) 
8b. Palpus otherwise 9 
9a. Palpal embolus ventral, with a short distal hook as in 1957b, 
fig. 18; southern Mexico to southern Brazil 
S. moesta (O. P.-Cambridge) 
9b. Palpus otherwise 10 
10a. Palpus with biforked embolus (Fig. 22) ; northern Colombia 
S. maria n. sp. 
10b. Palpus otherwise 11 
lla. Palpus with spine on base of embolus and complex U-shaped 
radix (1957b, fig. 11; Figs. 44-48); southern Mexico to 
southern Patagonia S. ancorata (Holmberg) 
llb. Palpus otherwise 12 
1 2a. Palpus with prominent ventral embolus (Fig. 18); chelicerae 
tuberculate (Fig. 19) ; Venezuela, Ecuador, Peru to Chile 
S. andina (Keyserling) 
12b. Palpus and chelicerae otherwise 13 
