Norman I. Platnick.
Notes on the Pepinensis Group of the Crab Spider Genus Ebo (Araneae: Thomisidae).
Psyche 79:58-60, 1972.

Full text (searchable PDF, 268K)
Durable link: http://psyche.entclub.org/79/79-058.html

The following unprocessed text is extracted from the PDF file, and is likely to be both incomplete and full of errors. Please consult the PDF file for the complete article.

NOTES ON THE PEPINENSIS GROUP OF THE
CRAB SPIDER GENUS EBO (ARANEAE : THOMISIDAE) * Museum of Compa,rative 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:
Ioa. Carapace pale yellow with scattered dark circular markings; legs pale yellow, without dark fleckings; embolus short ( 1972, Figs. 13, 14) ; spermathecae as in 1972, Fig. 20; known only from the south central states ....................... ...................................... punctatus Sauer and Platnick lob. Carapace orange-brown with dark fleckings; legs usually with dark fleckings ; embolus long (Figs. I, 4) ; spermathecae . .
as in Figs. 3, 6 .......................................................... I I Iia. 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 II~. Embolus distinctly angular, middle loop of duct near de- cending loop (Fig. I ) ; 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 Zoologv. 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.
At&f 7958 60 (1972). hup //psjVche rnlclub org#Y/79-058.html



================================================================================

Platnick - Ebo
Figs. 1-3.
Ebo bucktei n. sp.
1. Male, left palpus, ventral view. 2. Retro- lateral view. 3. Female, spermathecae, dorsal view (fertilization tubes omitted).
Figs. 4-6. Ebo pepinensis Gertsch. 4. Male, left palpus, ventral view. 5. Retrolateral view. 6. Female, spermathecae, dorsal view (fertilization tubes omitted).
(Scale line 0.1 mm)
MALE. Total length 2.75 å 0.18 mm ; carapace 1.29 å 0.07 mm long and 1.40 51 0.09 mm wide; femur I1 2.43 å 0.14 mm long (23 specimens). Carapace orange-brown with dark fleckings and a network of dark reticulations from the lateral edges almost to the thoracic groove. Legs with irregular reddish-brown fleckings. Abdo- men pale brown with dark cardiac mark and irregular fleckings forming vague chevrons and posterolateral stripes. Palpal segments with irregular fleckings, as in Figs. I, 2. FEMALE. Total length 3.88 å 0.43 mm; carapace 1.44 2 0.12 mm long and 1.59 =b 0.10 mrn wide; femur I1 2.38 k 0.10 mm long (10 specimens). Coloration as in male. Epigynum typical for the genus.
Spermathecae as in Fig. 3;
minute, unsclerotized fertilization tubes not drawn. RANGE. Known only from the type locality. COMMENTS AND DIAGNOSIS. Ebo bucklei is most similar to E. pepinensis Gertsch, but may be distinguished by the characters listed



================================================================================

60 Psyche [March- June
in the key and illustrated in Figs. 1-6. Mature males of E. bucklei have been taken from late May through late July; mature females from late June through early August.
The species is named in honor of Mr. Donald J. Buckle, who first brought it to the author's attention. LITERATURE CITED
SAUER, R, J. AND N, I. PLATNICK.
1972. The crab spider genus Ebo (Araneida: Thomisidae) in the United States and Canada. Can. Ent. 104: 35-60.



================================================================================