Euryparasitus longicheta Bondartchuk & Buyakova

Hagele, Thomas, Kaufman, Bruce, Whitaker, John O., Jr & Klompen, Hans, 2005, The genus Euryparasitus in North America (Mesostigmata: Euryparasitidae), Zootaxa 1036, pp. 1-20 : 10-12

Euryparasitus longicheta Bondartchuk & Buyakova ( Figs. 2 B, 4)

Euryparasitus longicheta Bondartchuk & Buyakova, 1978 , Zool. Zh. 57: 1578 Diagnosis. This species differs from all other known Euryparasitus deutonymphs by the relatively long dorsal setae, nearly all of which surpass the insertion point of the next seta in the series. In most other characteristics it is quite close to E. tori and E. occidentalis . The following notes are intended to supplement the original description, and to provide comparative data for E. occidentalis .

Description. Idiosomal length 655 (36) and width 414 (15) (N= 6).

Gnathosoma. Cheliceral dentition, gnathotectal shape, and palp segmentation and setation as in E. occidentalis . Hypostomal setae relatively longer, lengths of setae hyp 2 far surpassing the insertion of setae cs ( Fig. 2 B).

Idiosoma. Dorsal shields subequal in size, covering most of dorsum ( Fig. 3 A). Podonotal shield length 325 (16), width 355 (16), opisthonotal shield length 301 (19), width 356 (40). All setae smooth; most setae long, although setae j 1, z 1, and some marginal setae are short; setae r 4, Z 3, and Z 5 longer than most other setae, but less obviously so than in E. occidentalis . Distribution of setae, lyrifissures, and glands as in E. occidentalis .

Venter. Sternal shield large. Peritremes extending beyond the anterior edge of coxal acetabula I. Peritrematal, metapodal, and anal shields as in E. occidentalis . Setae slightly longer than in E. occidentalis , but much less so than on the dorsum. Lyrifissures ivp, situated posterior to the anus not observed. This may be an artifact of inadequate material.

Legs. Leg morphology and setation pattern as in E. occidentalis .

Material examined (all deutonymphs). U.S.A.: Oregon, Union Co., Starkey Exp. Forest, 45°14'N, 118°33'W, ex Sorex vagrans (CM7004), 19 Oct 1976, coll. Maser, C. O., OSAL 013796–800; ex Clethrionomys gapper i ( Muridae ) (CM6994) 26 Oct 1976, coll. Maser, C. O., OSAL 013801.

Deposition of specimens. Specimens deposited in JOW and OSAL.

Remarks. Euryparasitus longicheta was described from Western Siberia associated with Eutamias sibericus (Sciuridae) and Cricetulus barabensis (Muridae) ( Bondartchuk & Buyakova, 1978).

Figures

FIGURE 2. Euryparasitus deutonymphs, subcapitulum. A: E. occidentalis n. sp.; B: E. longicheta Bondartchuk & Buyakova; C: E. maseri n. sp.; D: E. calcarator (Banks).

FIGURE 3. Euryparasitus occidentalis n. sp., deutonymph. A: dorsal view; B: ventral view.