Dunaxeus
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Ordo: Trombidiformes
Familia: Cunaxidae
Name
Dunaxeus Den Heyer & Castro, 2009 – Wikispecies link – Pensoft Profile
Historical review
Den Heyer (1981b)[1] described Cunaxoides capensis and Cunaxoides elongatus. Den Heyer and Castro (2009)[2] erected Dunaxeus, transferred Dunaxeus capensis and Dunaxeus elongatus to the genus, and described Dunaxeus duosetosus.
Diagnosis
Gnathosoma. Pedipalps 3-segmented. Femurogenua at least twice as long as wide, complemented with 5 setae. Tibiotarsi at least twice as long as wide, usually complemented with 6 setae. A small apophysis occurs basally and a pointed process occurs near the terminal tip; a ridge runs between the apophysis and pointed process. Subcapitulum with 4 pairs of setae (hg1–4 and 2 pairs of adoral setae); setae hg4 is often the longest. Chelicera without seta.
Idiosoma, dorsal. Proterosoma bears an ill-defined and weakly sclerotized shield which is complemented with 2 pairs of setae (lps and mps) and 2 pairs of setose sensillae (at and pt). Dorsal hysterosoma may or may not bear a plate; if a plate is present it is ill-defined and weakly sclerotized, may be complemented with a variable number of setae, and may or may not be fused with the proterosomal shield. Setae c1–h1, c2, and h2 are present. Cupule im is present laterad and posterior of e1. The integument that is not covered in shields or plates is striated.
Idiosoma, ventral. Coxae weakly sclerotized and ill-defined; they can be recognized by possessing somewhat denser striations than the surrounding integument. Coxae I–II may be fused and may coalesce medially to form a sternal shield. Coxae III–IV fused. Each coxa complemented with 2–4 setae. Genital plates each bear 4 setae (g1–4); 2 pairs of genital papillae visible underneath plates. Anal plates bear 1 pair of setae; 1 pair of setae present ventrally on the integument near the anal plates. Up to 7 pairs of setae present on the integument between the coxal and genital plates. Cupule ih present ventrally laterad the integumental setae associated with the anal plates. Integument not covered in shields or plates is striated. Legs. Tarsi never constricted apically so as to end in lobes. Tibia III complemented with 5 sts (4 short, 1 long). Tibia IV complemented with 5 sts (4 short, 1 long), and lacks a trichobothrium. Ambulacral claws on either side of a 4-rayed empodium present.
Key to adult female Dunaxeus
Taxon Treatment
- Skvarla, M; Fisher, J; Dowling, A; 2014: A review of Cunaxidae (Acariformes, Trombidiformes): Histories and diagnoses of subfamilies and genera, keys to world species, and some new locality records ZooKeys, 418: 1-103. doi
