Nilotonia, , Panesar, 2004

Goldschmidt, Tom, 2008, Taxonomical, ecological and zoogeographical studies on anisitsiellid water mites (Acari: Hydrachnidia: Anisitsiellidae Koenike, 1910) from Madagascar, Zootaxa 1954 (1), pp. 1-120 : 43-47

Nilotonia (c.f. Telotaolana ) sp. nov.?

( Figs 87–91 , Table 5)

Material: Deutonymph, MD 160 , Joffreville, Montagne d’Ambre (Antsiranana), riparian springs at right bor- der of Rivière Antomboka , downstream sacred cascade, 1000 m asl, 18.0 °C, 20 µS/cm 19.11.2001, mounted .

Habitat: Spring at 1000 m asl.

olana) sp. nov. MD 30 deutonymph. Measurements given in µm.

Distribution: Madagascar (Montagne d’Ambre).

Description, deutonymph (n = 1): Idiosoma rounded-oval ( Fig. 87 ); dorsum with one trapezoid posterior plate (L/W 226/196) and two oblique-oval anterior plates (L/W 181/103); sclerotized body parts dark purplegreyish; Dgl-1 and -2 anterior, Dgl-3 close antero-laterally, Dgl-4 postero-laterally to anterior plates, Dgl-5 lateral to posterior plate, Dgl-6 posterior; Lgl-1 to -4 far laterally between dorsum and venter, two pairs of very small platelets (anterior Dgl-3 and Lgl-4) and one pair of mid-sized platelets (antero-laterally to Dgl-5); lateral eyes small, oval, separated on both sides, free under integument (partly lost in preparation), first pair of lyrifissures directly posterior eyes; soft integument irregularly lined ( Fig. 88 ); coxal field broad compact, Cx- I antero-medially overlapping, posteriorly diverging; Cx-II laterally overlapping Cx-III; Cx-I/II with large hook-shaped caudal apodemes; Cxgl-2 between Cx-II and Cx-III, Cxgl-4 at the anterior margin of Cx-III, suture between Cx-III and -IV incomplete ( Fig. 87 ); medial margins of Cx-III/IV extended by fine secondary sclerotization, slightly convex, strongly diverging towards caudal; caudal margin of Cx-IV with pointed protrusion, Vgl-3 close to the protrusion of caudal margin of Cx-IV, fused with stripe of secondary sclerotization, lateral margin of Cx-IV (with secondary sclerotization) dorso-laterally extended beyond Cx-III; provisional genital field on triangular, anteriorly pointed plate, caudal corners rounded, two pairs of rounded-oval acetabula (Ac1 closer together than Ac2), flanked by three pairs of setae; setae of Vgl-1 on small platelets laterocaudal beside genital plate, Vgl-2 and -4 on small platelets lateral of excretory pore, close to caudal margin of idiosoma ( Fig. 87 ); legs slender, bearing many large and heavy setae; claws on leg-I to -III with distinct ventral clawlet ( Fig. 89 ); leg-IV-6 with two small peg-like and two hair-like terminal setae as well as one long sub-terminal seta ( Fig. 90 ); gnathosoma without special characteristics, palp relatively slender, P2 ventral without seta ( Fig. 91 ).

Male: Unknown.

Female: Unknown.

Remarks: The deutonymph is tentatively placed close to or within the new subgenus according to the relatively large dorsal plates and the general shape of the legs. However, the relatively long sub-terminal seta on leg-IV-6 separates the species from the previous species and the specimen was found far away from the nearest sample site of the other species. A definite assignation to one of the species described before is therefore not possible; the deutonymph most probably represents a further undescribed species.

Figures

FIGURES 87–91. Nilotonia (cf. Telotaolana) sp. nov., deutonymph (MD 160): 87, idiosoma, ventral view; 88, idiosoma, dorsal view; 89, leg-II; 90, leg-IV; 91, right palp, ventro-medial view. Scale bars = 100 µm.