Atractides allgaier, Gerecke, 2003

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 : 321

ATRACTIDES ALLGAIER SP. NOV. ( FIG. 81A–G )

A. distans (K. Viets, 1914) partim K. O. Viets, 1978 A. distans Gerecke, 2002

Type series: Holotype ♂, SMF KOViets 1809, Atractides allgaier nov. spec . Holotypus ♂ Gerecke [ Atractides distans (Viets) ♂] Germany, Niedersachsen, Mölle, linker Zufluss ; 1. Hals unten südl. Möllenbeck bei Rinteln 23.7.1953 , 1809. Paratypes: SMF 1796 , labelled as holotype, Germany, Niedersachsen, ‘ Mölle linker Zufluss von Hals z. westl. Strasse; südl. Möllenbeck bei Rinteln [16/53] 22.7.1953 1796’ 1 ♂, 1 ♀. Coll. Gerecke : Germany, Baden- Württemberg, Schönbuch ( TÜ) D 459 Arbach bei Becklesgarten, 400 m, Gerecke 2 ♀ ; Goldersbach bei Teufelsbrücke 390 m, Gerecke D 453/3 5.9.1995 Moos , 1 ♀ ; D 453/4 5.10.1995 Steine , 4 ♂, 2 ♀ .

Description:

General features dorsal integument: lineated (4/10 Mm); muscle attachments: smooth coxal field: mediocaudal margin of Cx-1 + 2 with a large, slightly concave area between the laterally directed apodemes of Cx-2

I-L: I-L-5 ventral margin slightly expanding near the insertion of the ventral seta, dorsal and ventral margin between the narrow base of the segment and the ventral seta slightly diverging, more strongly diverging between this seta and the insertion S-1; S-1/-2 strongly heteromorphic and distanced, S-1 long, slightly bent inwards, distally thickened and with truncate tip, S-2 shortened, enlarged, with irregular blade and a blunt tip; I-L- 6 long and slender, only slightly narrowed from the base to the tip.

excretory pore: smooth; Vgl-1: separate from Vgl-2

palp: weak sexual dimorphism, ventral margins of P-2 and P-3 straight, P-4 ventral margin 2: 2: 1, with denticles near hair insertions, but the distal one only little projecting, sword seta curved, near distoventral hair

Males

Holotype, variability of paratypes in parentheses: genital field: apple-shaped, with nearly straight, irregular anterior margin,

and a shallow posterior indentation; genital setae: 50 palp: more stout, sword seta P-4 slightly proximally from distoventral hair idiosoma L/W 450/340 (380–600/300–500); glandularia 23 coxal field L 250 (230–305); Cx-3 W 275 (265–375); Cx-1 + 2 mL 74 (70–108),

IL 153 (140–205), W 215 (210–295) I-L-5 dL 132 (132–145), vL 90 (88–92), dL/vL 1.47 (1.47–1.63), HA-HC 37 (37–

40), 42 (40–44), 55 (55–60), dL/HB 3.14 (3.14–3.55) S-1 L 85 (85–98), L/ W 11.3 (8.2–11.3), S-2 L 63 (62–72), L/ W 8.3 (5.3–8.3),

interspace 17 (17–25), L S-1/2 1.35 (1.31–1.48) I-L-6 L 127 (123–127), HA-HC 17 (17–20), 16 (15–18), 15 (14–15), dL/HB 7.94

(6.89–8.33); L I-L-5/6 1.04 (1.04–1.17) genital field L/W 80/85 (80–105/85–120), Ac-1–3 L 25, 15, 25 gnathosoma vL 105; chelicera –

Figures

Figure 81. Atractides allgaier. A, paratype ♂, C-E holotype ♂ B, F, G, paratype ♀. A, ♂ ventral idiosoma partial view; B, ♀ genital field; C, ♂ palp, medial view; D, ♂ palp, lateral view; E, ♂ I-L-5 and -6; F, ♀ palp, medial view; G, ♀ I-L-5 and -6. Scale bars = 100 µm.