Atropacarus (Atropacarus) parainsularis, Niedbała, Wojciech & Ỷ, Josef Star, 2011

Niedbała, Wojciech & Ỷ, Josef Star, 2011, Three new species of ptyctimous mites (Acari: Oribatida: Phthiracaroidea) from Spain, Zootaxa 2966, pp. 58-64 : 60-61

Atropacarus (Atropacarus) parainsularis sp. n.

(Figs. 2A–H)

Measurements of holotype. prodorsum: length 215, width 134, height 99, sensillus 40, setae: interlamellar 63, lamellar 20, rostral 33, exobothridial 15; notogaster: length 364, width 252, height 222, setae: c1 53, h1 and p1 48; c1 / c1–d1 = 0.6; genitoaggenital plate 101×71; anoadanal plate 131×76.

Diagnosis. Sensilli with clavate head, interlamellar and rostral setae erect, notogastral setae thick, covered with short cilia in distal half, minute setae h of mentum, relatively long, rough setae ad3 of anoadanal plates.

Description. Colour light yellow. Surface of the body covered with feeble concavities, more distinct in prodorsum.

Prodorsum (Fig. 2 A–B) with weak lateral carinae of medium length. Sigillar fields weakly discerned, median longer than lateral, posterior furrows well developed. Sensilli with narrow pedicel and clavate, even globular head; interlamellar setae rigid, erect covered with small spines in distal half, similar to notogastral setae; lamellar setae needleform, smooth, rostral setae spiniform, rough, erect.

Notogaster (Fig. 2 F) with 16 pairs of rather short (c1 <c1–d1), rigid, thick setae as interlamellar setae covered with short cilia in distal half. Setae c1 and c3 situated near to the anterior border, setae c2 shifted away from the bor- der. Vestigial setae f1 located posteriorly of setae h1. Between lyrifissures ia and im was observed, lyrifissures im situated above the line cp -h3.

Ventral region (Fig. 2 C–E). Setae h of mentum minute. Arrangement of genital setae: 6: 3. Four pairs of rather smooth flagellate setae at proximal border of anoadanal plates and also relatively long ad3 rough setae.

Leg: Leg setation of “complete type ”. Seta d, l, v’ on femora I (Fig. 2H) minute, setae d located at the distal end of segment.

Material examined. Holotype and one paratype are deposited at DATE, Locus typicus: ESP-92, Spain, Puerto de Aliba, 22.VII.2004, growth of Genista hispanica , sample of dry rhizosphere, leg. M. Svoboda, twenty other paratypes are deposited at ISB, and twenty five ones at DATE, from locality: ESP-105, Spain, heatland South of Puerto del Escudo with heather Erica sp., 4.VIII.2004, sample of Erica sp. rhizosphere, leg. M. Svoboda.

Comparison. The new species is similar to Atropacarus (Atropacarus) insularis Weigmann, 1976 from the Azores in the shape of sensilli. However, the new species is distinguishable from that species by the presence of different notogastral and interlamellar setae rigid and covered with cilia in distal half and the erect rostral and interlamellar setae.

Etymology. The name of new species refers to the similarity to Atropacarus (Atropacarus) insularis Weigmann, 1976 .

FIGURE 2 A–H. Atropacarus (Atropacarus) parainsularis sp. nov.: A, prodorsum, dorsal view; B, prodorsum, lateral view; C, genitoaggenital plate; D, genitoaggenital and anoadanal plate; E, mentum of subcapitulum; F, lateral view of opistosoma; G, notogastral seta c1, H, trochanter and femur I.