Phyllolohmannia luiseae, Mahunka, 2008

Mahunka, S., 2008, A New Genus And Some Other Data Of Oribatids From Thailand (Acari: Oribatida), Acta Zoologica Academiae Scientiarum Hungaricae 54 (2), pp. 125-150 : 128-129

Phyllolohmannia luiseae sp. n.

( Figs 1–9 )

Diagnosis: Rostrum rounded. Prodorsal and notogastral setae wide, phylliform, covered by short spines. Sensillus with long branches. Sixteen pairs of notogastral setae present. Infracapitulum with two pairs of setae. Epimeral setal formula: 3–1–4–4. Genito-anal setal formula: 10–0–5–5. All legs monodactylous.

Material examined: Holotype: Thailand, Erawan National Park (Kanchanaburi). 14. 02. 1994.

Leg. S. MAHUNKA & L. MAHUNKA-PAPP (As-695). Holotype (1750-HO-07): HNHM.

Measurements: Length of body: 662 µm, width of body: 375 µm.

Prodorsum: Truncate, rounded anteriorly. All prodorsal setae large, expanded, covered almost all prodorsal surface ( Fig. 1 ). Whole surface of the setae distinctly aciculate, their margin sometimes serrate. Sensillus with approximately 12–14 long branches.

Notogaster: All notogastral setae, also the lateral ones (c 3 and cp) nearly round in shape. They overlap each other, so the most part of the notogastral surface is covered by these setae ( Fig. 1 ).

Ventral parts: Infracapitulum with two pairs of wide setae (h and m), anterior pair of which phylliform, posterior pair fungiform. Epimeral setal formula: 3–1–4–4 ( Fig. 2 ). All setae wide, but varying in shape ( Figs 4–9 ), mostly phylliform without vein. Genital plates bearing 10 pairs of setae, situated in two rows. Outer ones much wider than the setae in inner position. Both of anal and adanal plates with five pairs of setae in each, anal setae thin with long cilia, adanal ones wide, phylliform ( Fig. 3 ).

Legs: Typical for the genus. Some of the setae also wide, phylliform.

Remarks: This is the fourth species of the genus Phyllolohmannia J. et P. BALOGH, 1987. It stands nearest to the species, P. yinae HU et AOKI, 1993 , however, the notogastral setae of the latter species are much wider than in the new species, and the adanal setae cover the whole surface of the adanal plates (these setae also much narrower in P. yinae ). Two pairs of anal setae present in P. yinae , while five pairs in the new species.

Etymology: I dedicate this marvelous new species to my wife and co-worker, LUISE MAHUN-

KA- PAPP, who collected it.

Figures

Figs 1–9. Phyllolohmannia luiseae sp. n. – 1 = body in dorsal view, 2 = body in ventral view, 3 = genito-anal region, 4 = seta g2, 5 = seta 1a, 6 = seta ad3, 7 = seta an2, 8 = seta 3b, 9 = seta c1