Eustigmaeus oacuus, Sali & Doğan, 2005

Sali & Doğan, H, 2005, Eustigmaeus mites from Turkey (Acari: Stigmaeidae), Journal of Natural History 39 (11), pp. 835-861 : 858-860

Eustigmaeus oacuus n. sp.

( Figure 15 )

Type materials

Holotype female from moss under Quercus sp., Erciyes Mountain , Kayseri, 16 May 2002; one paratype female from dung hill, Erzincan, 30 March 2001.

Female

Holotype: length of body (excluding gnathosoma) 297, width 173.

Dorsum

Dorsal shields with shallow dimples, each dimple with about 10–16 circular or oval vacuoles, some of them bean-shaped, majority peripherally disposed, very few scattered centrally or irregularly dispersed. Fossettes on dorsal shields as illustrated. Propodosomal shield with four pairs of setae and one pair of eyes. Hysterosomal shield with six pairs of setae, suranal shield with two pairs of setae. Dorsal body setae short, fan-shaped with numerous spinules, except for setae f 1 which are longer and club-shaped. Dimensions of setae as follows: υi 20, υe 18, sci 5 sce 5 c 1 17, c 2 20, d 15 d 25 e 15 e 2 17, f 1 30, h 15 h 2 20. Distance between setae: υi–υi 30, υe–υe 70, υi–υe 37, sci–sci 120, υe–sci 27, sce–sce 147, sci–sce 33, c 1 –c 1 60, d 1 –d 1 64, c 1 –d 1 57, c 1 –d 2 53, d 2 – d 2 157, d 1 – d 2 52, e 1 – e 1 53, e 2 –e 2 123, e 1 –e 25 d 1 – e 2 40, d 1 – e 1 54, d 2 –e 2 64, f 1 –f 1 53, e 1 –f 1 37, e 2 –f 1 70, h 1 –h 1 30, h 2 –h 2 67, h 1 –h 2 17.

Venter

Humeral shields triangular, setae c 2, similar to other dorsals. Humeral regions without callosities. Humeral and suranal shields with similar patterns as dorsum. Coxisternal shields completely fused, with vacuoles, except for a central circular region on posterior coxisternal shield which is faintly punctate. Coxisternal shields bearing 1a, 3a and 4a. Aggenital shield with three pairs of setae, ag 2 and ag 3 subequal in length, ag 1 slightly shorter than others. Pseudanal covers with three pairs of setae, subequal in length, ps 1 with spinules. Coxae, anal covers, coxisternal and aggenital shields with similar patterns.

Legs

Leg I 197, leg II 163, leg III 157, leg IV 190. Number of setae (solenidia in parentheses) on leg segments (I–IV) as follows: tarsi 14(v)-10(v)-8(v)-7, tibiae 7(w, w p)-6(w p)-6(w p)- 6(w p), genua 4(k)-4(k)-1-1, femora 6-4-3-2, trochanters 1-1-2-1, coxae 2-2-2-2. Lengths of solenidia on tarsi: v 1 18, v 2 10, v 3 4, femur II with four setae.

Male

Unknown.

Etymology

The name of this new species, υacuus, refers to the ornamentation of the dorsal and ventral shields.

Remarks

This species is similar to E. erzurumensis n. sp., E. anauniensis ( Canestrini, 1889) and E. kentingensis Tseng, 1982 , in the number of setae on femur II. However, it can be distinguished from these species by the shape of the dorsal dimples and the ventral shields.

Figures

Figure 15. Eustigmaeus υacuus n. sp. (female): (A) dorsal view; (B) ventral view; (C) leg I; (D) leg II; (E) leg III; (F) leg IV.