Atractides brendle, 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 : 323

ATRACTIDES BRENDLE SP. NOV. ( FIG. 82A–K )

A.loricatus Piersig, 1898 partim, K. O. Viets, 1978, Crema et al., 1996, Gerecke et al., 1998

Type series: Holotype ♂, Germany, Upper Bavaria, Berchtesgaden National Park 9, Königssee , Quelle 2 u. Sagereckwand , 605 m, 12∞57¢55E, 47∞31¢30 N, 31.05.1994 Gerecke & Goldschmidt; slide mounted in Hoyer’s fluid, gnathosoma separate, laterally, both I-L, both palps separate, laterally, genital skeleton separate, anterior . Paratypes: 3 ♂, 4 ♀, same site and date as holotype.

Material examined: MMB: 1049; 1107. Javorinka n novàrny pod Hamanem. Belan.Tatry. 4.9.1956 1 ♂ 154; 1121–1. potok v Tatranske Pojané. 7.9.1956 1 ♀.

Description:

General features dorsal integument: finely striated (10/10 Mm), inner layer with a honeycomblike structure consisting of regularly arranged fields of fine porosity; muscle attachments: sclerotized, D-1 fused with postfr, postoc, and Dgl-3, occasionally also prefr; D-2 a separate, roundish platelet, D-3 fused with Dgl-4, D-4 free or fused with Dgl-5; V-1–3 as separate, roundish platelets coxal field: mediocaudal margin of Cx-1+2 extending over the level of the apodemes equally rounded, apodemes Cx-2 short and curved, their tips directed laterally; Cx-3+4 subtriangular, with straight caudal margin slightly irregular due to secondary sclerotization.

I-L: I-L-5 elongated, ventral margin slightly convex near the base, slightly concave in the centre, and strongly diverging from dorsal margin in the sector between ventral seta and base of seta S-1; S-1/2 homoiomorphic, with rounded tips, narrow setal interspace, S-1 more slender and with a knobshaped tip; I-L-6 equally curved, with dorsal and ventral margins slightly converging from the base to the claw furrow.

excretory pore: posteriorly embraced by an U-shaped sclerite; Vgl-1: fused to Vgl-2

palp: little sexual dimorphism, ventral margin P-2 weakly concave, with rugosity in its central part, P-3 straight, slightly convex in the centre, P-4 straight, 1: 1: 1, with a fine denticle near proximoventral hair insertion, sword seta halfway between ventral setae or nearer to the distoventral one.

Males

Holotype, in parentheses paratypes:

genital field: anterior margin straight or slightly concave, posterior margin indented, Ac in triangular arrangement and subtriangular in shape, with their medial edges directed to the gonopore; genital setae: 48

palp: slightly more stout than in females idiosoma L/W 610/420 (550–600/420–450); glandularia 42

coxal field L 280 (256–300); Cx-3 W 310 (302–350); Cx-1+2 mL 92 (94–100), IL 175 (175–200), W 230 (220–280)

I-L-5 dL 146 (141–160), vL 120 (116–135), dL/vL 1.22 (1.19–1.24), HA-HC 32, 40, 43 (29–35, 38–45, 40–47), dL/HB 3.65 (3.56–3.74)

S-1 L 62 (61–72), L/ W 10.3 (8.7–10.3), S-2 L 58 (61–62), L/ W 8.3 (6.9–7.8), interspace 7, L S-1/2 1.07 (1.00–1.16)

I-L-6 L 98 (92–100), HA-HC 25, 23, 23 (25–28, 23–24, 22–23), dL/HB 4.26 (4.00–4.35); L I-L-5/6 1.49 (1.53–1.62)

genital field L/W (–/160 (150/157–180), A-1–3 L (54, 54, 58)

gnathosoma –; chelicera L (197), L/H (5.63), bS/claw (2.46)

Figures

Figure 82. Atractides brendle. A, C–G, holotype ♂ B, paratype ♂, H–K paratype ♀. A, ♂ coxal field; B, ♂ genital and postgenital field; C, ♂ dorsum; D, ♂ chelicera; E, ♂ I-L-5 and -6; F, ♂ palp, medial view; G, ♂ palp, lateral view; H, ♀ palp, medial view, I ♀ I-L-5 and -6, K ♀ genital field. Scale bars = 100 µm.