Neoamerioppia csabai, Mahunka & Mahunka-Papp, 2007

Mahunka, S. & Mahunka-Papp, L., 2007, Taxonomical And Faunistical Studies On Oribatids Collected In Kenya (Acari: Oribatida) I., Acta Zoologica Academiae Scientiarum Hungaricae 53 (1), pp. 51-74 : 62-64

Neoamerioppia csabai sp. n.

( Figs 21–23 )

Diagnosis – Rostrum conical, rostral setae well pilose, arising on the dorsal surface, medially, near to each other. Interlamellar setae absent. A pair of thin lamellar lines and three pairs of interbothridial maculae present. Sensillus long, directed backwards, its head lanceolate. Ten pairs notogastral setae present, varying in length. Two pairs tubercles present on sejugal bordersin opposite position. Genitoanal setal formula: 5–1–2–3.

Material examined: Holotype: Kenya, Nakuru district, Lac Naivasha : 08.11.1977. Leg. V . MAHNERT & J.-L. PERRET (G 77/66). 9 paratypes from the same sample. Holotype and 5 paratypes: MHNG , 4 paratypes (1714-PO-2006): HNHM .

Measurements: Length of body: 416–482 µm, width of body: 252–280 µm.

Prodorsum: Rostral apex conical, rostral setae arising far from it, conspicuously medially, on the prodorsal surface, near to each other. They are much thicker than the other prodorsal setae and their cilia are also longer and thicker. A pair of lamellar lines, running anteriorly from the 3 pairs of interbothridial maculae and a weak, but thicker translamellar line present ( Fig. 21 ). Interlamellar setae absent. Sensillus long, directed backwards and outwards, its head short, gradually dilated, lanceolate, finely pilose. Behind the bothridium a pair of porose field observable.

Notogaster: Dorsosejugal suture convex. Ten pairs of notogastral setae present, setae ta minute, much shorter than the preceding setae. The remaining ones also varying in length, setae p much shorter than other ones, and located in median position.

Lateral part of podosoma ( Fig. 22 ): Exobothridial region granulate, without stronger lath or other structure. Pedotecta I small, pedotecta II hardly visible.

Ventral regions ( Fig. 23 ): Epimeral region well sclerotised, sejugal apodemes with two pairs of very strong tubercles in opposite position. Epimeral setae – except setae 3c – short, thin, simple. Setae 3c thicker and much more pilose than the others. Genitoanal setal formula: 5–1–2–3. Setae ad 1 longer than ad 2. Margin of the ventral plate with a deep hollow medially.

Remarks – The new species is well characterised by the ratio of the notogastral setae and first of all by the characteristic structure in the sejugal region.

Etymology – We dedicate the new species to our friend, Prof. Dr. JÁNOS CSABA (Budapest), who helped our work in different ways.

Figures

Figs 21–23. Neoamerioppia csabai sp. n. – 21 = body in dorsal view, 22 = body in ventral view, 23 = body in lateral view