Atropacarus (Hoplophorella) parastenos, Niedbała & Starý, 2016

Niedbała, W. & Starý, J., 2016, Six new species of ptyctimous mites (Acari: Oribatida) from Madagascar, Acarologia 56 (4), pp. 485-496 : 494-496

Atropacarus (Hoplophorella) parastenos n. sp.

( Figures 6 )

Description

Measurements of holotype — Prodorsum: length 190, width 139, height 71; length of prodorsal setae: sensillus (ss) 35, interlamellar (in) and exobothridial (ex) 18, lamellar (le)13, rostral (ro) 20; notogaster: length 374, width 227, height 222; length of notogastral setae: c 1 71, c 1 / c 1 - d 1 =0.8, h 1 94, ps 1 83; genitoaggenital plate 114 × 71, anoadanal plate 104 × 63.

Species of rather small size; colour yellow; surface of body covered with deep rounded foveoles, in anterior part of notogaster with irregular margin.

Prodorsum — with small median crista. Lateral carinae short, posterior furrows distinct. Sigillar fields feeble, median ones narrow and longer than laterals. Sensilli (ss) rather short, with narrow pedicel and club-shaped, distally rounded head covered with small cilia. Other prodorsal setae minute, needleform, similar in length, ss> ro> in = ex> le.

Notogaster — with needleform, attenuate and smooth notogastral setae, most of them characteristically bent, medium in the length (c 1 <c 1 - d 1); notogastral setae c 1 and c 3 slightly remote from anterior notogastral margin, setae c 2 far from the margin. Vestigial setae and lyrifissures not visible.

Ventral region — setae h of subcapitular mentum considerably longer than distance between them. Formula of minute genital setae: 6(4+2): 3. Anoadanal plates with minute, needleform setae similar in length; adanal setae ad 3 situated in the middle of plates.

Legs — Formulae of setae and solenidia of "complete type "; setae d on femora I needleform and situated at distal end of article.

Material examined — Holotype is deposited at DATE from locus typicus: North Madagascar, Montagne d’Ambre National Park, circuit Sommet, 12. I. 2015, evergreen rain forest, latitude 12°31’52" S, longitude 49°10’17" E, altitude 1169 m, sifted of Pandanus sp. litter sample, Winkler apparatus extraction, leg. P. Ba ˇnaˇr and E. M. Rabotoson.

Etymology — The prefix para is Latin meaning "near" and refers to the similarity the new species with A. (H.) stenos Niedbała et Starý, 2014 .

Comparison — The new species is slightly similar to A. (H.) stenos Niedbała et Starý, 2014 from Tanzania in the shape of the sensilli and shape and length of prodorsal, genital, anal and adanal setae. The new species is distinguishable from A. (H.) stenos by the absence of powerful median crista of prodorsum and anterior cowl of notogaster, curved notogastral setae, longer setae h of the mentum (versus shorter setae) and setae d of femora I situated at distal end of article (versus remote from distal end) ( Niedbała and Starý 2014a).

Figures

FIGURE 6: Atropacarus (Hplophorella) parastenos n. sp. (holotype): A – prodorsum, dorsal view; B – lateral view of body; C – seta c1; D – mentum of subcapitulum; E – right genitoaggenital plate; F – left anoadanal plate; G – trochanter and femur of leg I.