Cyranozetes nasalis, Mahunka & Mahunka-Papp, 2003

Mahunka, S. & Mahunka-Papp, L., 2003, Contribution To The Knowledge Of The Hungarian Oribatida Fauna (Acari) I., Acta Zoologica Academiae Scientiarum Hungaricae 49 (4), pp. 255-260 : 257-260

Cyranozetes nasalis sp. n.

( Figs 1–8 )

Diagnosis – With the features mentioned in the description of the new genus.

Material examined – Holotype: “ Hungary, Bélmegyer: Fás-puszta, from grass, pasture. 04.08. 2000, leg. S. Mahunka & L. Mahunka-Papp. ” Holotype deposited in the Pedozoological Collections [pars Arachnoidea (1678-HO-03)] of the Hungarian Natural History Museum ( HNHM), Budapest .

Measurements – Length of body: 265 µm, width of body: 158 µm.

Prodorsum: Rostrum divided by two rounded incisions. Rostral apex nasiform, wide, with undulate anterior margin ( Fig. 3 ). Lamellae long, broad basally, strongly converging and narrowing anteriorly, with long cusps. Lamellar cusp simple without medial or lateral dens. Translamella present, much narrower than the lamellae. Rostral setae well barbed, curved inwards. Lamellar setae short, hardly longer than the lamellar cusp. Interlamellar setae also short, straight, not reaching over the translamella. Lamellar and interlamellar setae finely roughened. Sensillus short, guttiform, aciculate. Bothridia uncovered.

Lateral part of podosoma ( Figs 5–6 ): Tutorium wide, strongly dilated basally. Its cusp with nearly parallel sides, reaching to the insertion of the rostral seta with dentate anterior margin. Pedotectum I large, covering the acetabulum of leg I. Surface with some parallel striae. Discidium broad. Custodium very long.

Notogaster: Much longer than wide. Median part of the anterior margin slightly convex. Pteromorpha wide, curved downwards. Ten pairs of setiform, thin but well observable notogastral setae ( Fig. 1 ), porose areas hardly visible, without clear borders.

Ventral regions ( Fig. 2 ): All epimeral setae simple and short. Setae 1c arising laterally, at the base of pedotecta 1. Discidium wide, setae 4c arising on their outer margin. Genitoanal setae short, their position shown in Fig. 2 . Adanal setae shorter than the anal ones, setae ad 1 stand in post-, ad 2 and, ad 3 in paraanal position.

Legs: All legs with three claws. Setation of leg I as shown on Fig. 7 . Surface of tibia of femur II ( Fig. 8 ) with an anteriorly sharp expansion. The other femora bearing simple carina.

Remarks – See the remarks after the description of the genus.

Etymology – Having a nose-like rostral apex.

*

Acknowledgement – This study was supported by the Hungarian Scientific Research Fund

(OTKA, No. 45889).

Figures

Figs 1–4. Cyranozetes nasalis gen. et sp. n. – 1 = body in dorsal view; 2 = body in ventral view; 3 = rostrum; 4 = pigidial part of the body

Figs 5–8. Cyranozetes nasalis gen. et sp. n. – 5–6 = lateral part of podosoma; 7 = femur of leg II; 8 = tibia and tarsus of leg I