NOTES ON THE PEPINENSIS GROUP OF THE 
CRAB SPIDER GENUS EBO (ARANEAE: THOMISIDAE)* 
By Norman I. Platnick 
Museum of Comparative Zoology 
Cambridge, Mass. 
Through the courtesy of Mr. Donald J. Buckle, I have recently 
had the opportunity to examine a series of crab spiders from Saskatch- 
ewan representing a new species of Ebo ( Ebo ). As this genus 
has recently been revised, an isolated description of the new species 
seemed warranted. 
The Saskatchewan specimens are most closely allied to Ebo 
pepinensis Gertsch, and will key out to that species in the published 
key (Sauer and Platnick, 1972, p. 37), which should be emended 
as follows: 
10a. Carapace pale yellow with scattered dark circular markings; 
legs pale yellow, without dark deckings; embolus short 
(1972, Figs. 13, 14); spermathecae as in 1972, Fig. 20; 
known only from the south central states 
punctatus Sauer and Platnick 
10b. Carapace orange-brown with dark deckings; legs usually with 
dark deckings; embolus long (Figs, 1, 4) ; spermathecae 
as in Figs. 3, 6 1 1 
1 1 a. Embolus broadly curved, middle loop of duct far from de- 
scending loop (Fig. 4) ; retrolateral tibial apophysis broad, 
serrate (Fig. 5) ; spermathecae separated by their width 
(Fig. 6) ; widely distributed pepinensis Gertsch 
11b. Embolus distinctly angular, middle loop of duct near de- 
cending loop (Fig. 1); retrolateral tibial apophysis long, 
narrow, not serrate (Fig. 2) ; spermathecae separated by 
less than half their width (Fig. 3) ; known only from 
Saskatchewan bucklei n. sp. 
Ebo bucklei n. sp. 
Figs. 1-3 
types. Holotype male, allotype female from Saskatchewan (5 mi. 
NE of Saskatoon, 6-13 July 1967, E. Gorin) deposited in the 
Museum of Comparative Zoology. Twenty-two male and nine 
female paratypes from the same locality, various dates. 
*This investigation was supported in part by Public Health Service Grant 
Al-01944. 
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