Atractides heversi, K. O. Viets, 1982

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 : 319

ATRACTIDES HEVERSI K. O. VIETS, 1982 ( FIG. 80A–D )

Type series: Holotype ♀, SMF KOViets 7258 Atractides (Polymegapus) heversi KOViets ♀ Holotypus, Israel, Nahal Dan, Stn 6–3 Ortal leg. 25.7.1979 IES 1610; Aca. 1149. State of conservation: perfect, dorsum, palps, and all legs detached, separate, appendages lateral, gnathosoma and chelicerae in situ .

Description:

General features

Male unknown dorsal integument: striated (10/10 Mm); muscle attachments: smooth coxal field: Cx-1 + 2 with mediocaudal margin extremely narrowed between the strong, caudolaterally-directed apodemes of Cx-2, caudal margin of Cx- 4 with two concave sectors separated by a little pronounced extension near an apodeme

I-L: I-L-5 with diverging ventral and dorsal margins, setae S-1/2 strongly heteromorphic and distanced, S-1 strong, curved, with blunt tip, S-2 slender, straight and pointed: I-L-6 robust, equal in H from the base to the claw furrow genital field: with more than 4 pairs of Ac various in size excretory pore: smooth; Vgl-1: separate from Vgl-2

gnathosoma with elongated, slender and pointed rostrum palp: sexual dimorphism?

Females

Holotype:

genital field: pregen strong, equally curved, genital plates halfcircle-shaped with 5 Ac on the right, 6 on the left side palp: robust, ventral margin P-2 straight, with a slight kink in the centre of the segment, P-3 straight, P-4 basally concave, from the proximoventral hair to the distal end of the segment straight, 2: 1: 2, P-5 stout, with elongated claws idiosoma L/W 720/530; glandularia 45

coxal field L 293; Cx-3 W 369; Cx-1 + 2 mL 103, IL 211, W 260

I-L-5 dL 152, vL 103, dL/vL 1.48, HA-HC 41, 48, 59, dL/HB 3.17

S-1 L 79, L/ W 8.8, S-2 L 45, L/ W 6.4, interspace 19, L S-1/2 1.76

I-L-6 L 119, HA-HC 30, 28, 29, dL/HB 4.25; L I-L-5/6 1.28

genital field L/W 157/193, Ac-1–3 L 10, 20, 30

gnathosoma vL 157; chelicera –

Figures

Figure 80. Atractides heversi, holotype ♀ SMF KOViets 7258. A, coxal field; B, genital field; C, palp, medial view; D, I-L- 5 and -6. Scale bars = 100 µm.