Cheletonella Womersley

Vol & Doğan, Sibel, 2019, RESEARCH ARTICLE First record of Cheletonella (Acariformes: Cheyletidae) in Poland, with comments on other member of the genus, Acarological Studies 1 (2), pp. 95-100 : 95-97

Genus: Cheletonella Womersley

Species: Cheletonella vespertilionis Womersley

Female

Body ovoid, length (including gnathosoma) 556 (478- 600), width 306 (246-339).

Length of gnathosoma 180 (169-193), width 145 (139- 148) ( Fig. 1 ). Rostrum pointed, with two pairs of adoral setae (or 1,2). Longitudinal apodeme on midventral line of subcapitulum, between one pair of subcapitular setae (m). Protegmen conical, dorsal surface with faint broken striae. Tegmen with broken striae and small punctations scattered over its surface. Peritremes with nine chambers on each side ( Fig. 2A). Palps short and thick. Palp tarsus with two comb-like and two sickle-like setae. Palp tibia striated, bearing one dorsal, one ventral and one inner ventral acicular setae, palp claw bearing three basal teeth ( Fig. 2B). Palp genu short, with outer ventral acicular seta and one dorsal seta similar in form to dorsal body setae. Outwardly bulged femur striated, elbow-like in the middle of segments, with one dorsal seta similar in form to dorsal body setae, and two ventral acicular setae.

Dorsum ( Figs 3-4 ) with 15 pairs of fan-like setae including humerals, dorsal body setae homeomorphic. Dorsal idiosoma covered by only one prodorsal shield, sculptured like that of stylophore, with four pairs of setae ( Fig. 3 ). Eyes absent. Venter striated; intercoxal setae 1a, 3a and 4a piliform. Anogenital setae three pairs (ag 1-3), two pairs of genital setae (g 1-2) and three pairs of pseudanal setae (ps 1-3), ps 1-2 bifurcate, ps 3 smooth ( Fig. 5 ).

Leg I 304 (283-325), leg II 254 (209-283), leg III 271 (234-297), leg IV 314 (297-323). Chaetotaxy of leg segments as follows: coxae 2–1–2–2, trochanters 1–1–2–1, femora 2–2–2–1, genua 2(+1K)–2–2–2, tibiae 4(+1φ)–4– 4–4, tarsi 9(+1 ω)–8(+1 ω)–7–7.

Male

Length of body (including gnathosoma) 472 (463-482), width 245 (237-263). Length of gnathosoma 167 (165- 169), width 135 (128-140). Leg I 307 (300-318), leg II 217 (209-225), leg III 245 (240-254), leg IV 284 (273- 297).

Resembles female in general appearance, but: dorsal body setae 13 pairs, each tibiae II-IV bearing extra one dorsal solenidion and each tarsi II-IV bearing extra one ventral solenidion, anogenital shields situated posteriorly ( Fig. 6 ) Material examined

Poland: close to the entrance of Mopkowy Tunnel , Nowogród Bobrzański, May 2010, 3 ♀♀, from litter and detritus samples, 51°48' N 15°13' E (the seconds were not given as there were few collecting sites), 81 m a.s.l., coll. D. Łupicki. Poland: Szczytnicki Park , Wrocław, May 2010, 20 ♀♀ and 14 ♂♂, from litter and soil samples, 51°06'52''N 17°04'51''E, 120 m a.s.l. , coll. the students research group.

Distribution

Algeria, Armenia, Australia, Belgium, Brazil, Egypt, Iran, Malaysia, Tajikistan, Ukraine, USA ( Womersley, 1941; Baker, 1949; Volgin, 1955, 1969; Summers and Price, 1970; Fain and Nadchatram, 1980; Gerson, 1994; Halliday, 1998; Fain and Bochkov, 2001a; da Silva Ezequiel et al., 2001; Webster and Whitaker, Jr., 2005; Whitaker, Jr. et al., 2009; Doğan et al., 2011; Negm and Mesbah, 2014; Salarzehi et al., 2018) and Poland (current paper).

Figures

Figure 1. Cheletonella vespertilionis Womersley (Female) – Gnathosoma in dorsal view.

Figure 3. Cheletonella vespertilionis Womersley (Female) – Prodorsal region.

Figure 4. Cheletonella vespertilionis Womersley (Female) – Dorsum of hysterosoma.

Figure 5. Cheletonella vespertilionis Womersley (Female) – Anogenital region.

Figure 6. Cheletonella vespertilionis Womersley (Male) – Anogenital region.