Atractides legeri, (MOTAS, 1927)

Gerecke, Reinhard, 2003, Water mites of the genus Atractides Koch, 1837 (Acari: Parasitengona: Hygrobatidae) in the western Palaearctic region: a revision, Zoological Journal of the Linnean Society 138, pp. 141-378 : 206-207

ATRACTIDES LEGERI (MOTAŞ, 1927) ( FIG. 32A–D )

Megapus legeri Motaş, 1927

Syn. A. taeniolatus ( Maglio, 1928) : K. Viets, 1956

Type series: Lectotype ♂, here designated, NHMB Megapus legeri ♂ Motaş Oisans , 19.7.1926 Coll. Motaş IXIV/76; Pr.1476; Leg. Motaş, Oisans, R. ons des Trois Dauphins, 19.7.1926. State of conservation: of the idiosoma only sclerites and parts of the shredded dorsal integument remain; several legs separated and more or less dissected in separate segments, left II/III-L-6 and one palp missing, gnathosoma separate, damaged, one palp and chelicerae isolated. Loci typici: ruisseau de Pied-Moutet, au-dessous de Bourg-d’Oisans, près de la Rampe des Commères dans les mousses et la vase, 19.7.1926 (4/1/ 20: female ovigerous); 17.11.1926 (2/18/12: most females ovigerous).

Description:

General features dorsal integument: lineated (1/10); muscle attachments: unsclerotized coxal field: sexual dimorphism, in both sexes mediocaudal margin Cx-1 + 2 indented or concave

I-L: I-L-3–5 forming extended distal articulation sheaths; I-L-5 dorsal and ventral margins diverging, S-1 and -2 nearer to each other, S-1 longer than S-2, slightly curved, S-2 basally thickened, narrowed distally, both S-1 and -2 with rounded tip; I-L-6 relatively short and strongly curved, narrowed distally genital field: Ac in a curved line excretory pore: smooth; Vgl-1: not fused to Vgl-2

palp: weak sexual dimorphism, P-2 ventrodistally with a longitudinal line separating a medial hump with three fine denticles, from a lateral, smooth elevation; P-4 2: 3: 1, sword seta strong, nearer to the distoventral hair

Males

Lectotype coxal field: Cx-1 + 2 and -3 + 4 fused at their touching edges genital field: anterior and posterior margins weakly indented, anteriorly with a narrow border of secondary sclerotization; genital setae: 35

palp: P-4 ventral hairs very short idiosoma L/W 550/360; glandularia 27

coxal field L 302; Cx-3 W 365; Cx-1 + 2 mL 105, IL 229, W 279

I-L-5 dL 194, vL 145, dL/vL 1.34, HA-HC 53, 66, 73, dL/HB 2.94

S-1 L 81, L/ W 10.1, S-2 L 70, L/ W 7.8, interspace 12, L S-1/2 1.16

I-L-6 L 111, HA-HC 35, 26, 26, dL/HB 4.27; L I-L-5/6 1.75

genital field L/W 139/153, Ac-1–3 L 49, 49, 57

gnathosoma vL 136; chelicera L 221, L/H 4.70, bS/claw 2.40

Figures

Figure 32. Atractides legeri, syntype ♂ NHMB. A, I-L-5 and -6; B palp, medial view; C, coxal field; D, genital field. Scale bars = 100 µm.