Atractides tener

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 : 174

ATRACTIDES TENER THOR, 1899 ( FIG. 18A–H )

Syn. A. palpalis ( Lundblad, 1956) : K. O. Viets, 1957; A. pilosus Schwoerbel, 1961 : syn. nov.

Type series: Lost. Neotype designated here: SMF 1515 Cotype Atractides tener (Thor) ♀ Norwegen Ljans-elv 5.10.1901 Thor coll. This specimen was authorized by Thor, but was clearly not a part of the type series (collected after publication, original description based on a male, type localities Isi-elv i Baerum). State of conservation: idiosoma slightly crushed, mounting fluid with many crystallizations, both chelicerae missing claws.

Material examined: SMF: K. Viets 2805, Rügen, sub nom. A. spinipes , 2 ♂ (mounted together with A. nodipalpis , 1 ♀, A. sp., 1 Dn) ; Germany, Schönbuch ( TÜ) Goldersbach near Teufelsbrücke, from a 12-month investigation, 1996, 1 ♂, 6 ♀; Germany, Black Forest , from a saprobiological investigation, 1984 in the Breg and Brigach catchments ( Gerecke & Schwoerbel, 1991) 5 ♂, 2 ♀ .

Description:

General features dorsal integument: striated (9–12/10 Mm); muscle attachments: unsclerotized I-L: I-L-5 slender, S-1 and -2 nearly equal in length and little modified, I-L-6 robust, weakly curved, distally thickened excretory pore: sclerite ring; Vgl-1: not fused to Vgl-2

palp: without ventral projections on P-2

Males

SMF 2805

genital field: anterior margin equally convex, with a narrow border of secondary sclerotization (occasionally slightly incised medially), posterior margin deeply indented, often with a fine medial tip palp: ventral margin of P-2 convex, P-4 thickened, ventral margin 1: 1: 2, sword seta long, near distoventral hair idiosoma L/W 670/500; glandularia 30

coxal field L 336; Cx-3 W 383; Cx-1 + 2 mL 130, IL 234, W 297

I-L-5 dL 172, vL 134, dL/vL 1.28, HA-HC 31, 43, 49, dL/HB 4.00

S-1 L 78, L/ W 13.0, S-2 L 76, L/ W 10.9, interspace 7, L S-1/2 1.03

I-L-6 L 125, HA-HC 30, 25, 29, dL/HB 5.0; L I-L-5/6 1.38

genital field L/W 112/121, Ac-1–3 L 30, 36, 34

gnathosoma –; chelicera –

Figures

Figure 18. Atractides tener. A–E, ♀, Norway, SMF 1515; F; G, ♂ N Germany, Rügen SMF 2805; H, ♂ Goldersbach. A, ♀ coxal field; B, ♀ genital field; C, ♀ excretory pore and Vgl-1/2; D, ♀ palp, lateral view; E, ♀ I-L-5 and -6; F, ♂ palp, medial view; G, ♂ genital field; H, ♂ coxal field. Scale bars = 100 µm.