Atractides microphthalmus

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 : 257-258

ATRACTIDES MICROPHTHALMUS ( MOTAŞ &

TANASACHI, 1948) ( FIG. 51H,I )

Megapus microphthalmus Motaş & Tanasachi, 1948 [syn. to A. denticulatus? ( Schwoerbel, 1961a) : rejected synonymy]

Type series: Missing. Locus typicus: Romania, Vallée du Rîuşor (R. Pitesti) affluent de la Dâmbovitza, 20.X.1948, 1 ♂, 3 ♀ .

Description:

General features

Original description dorsal integument: smooth sans structure; muscle attachments: Postoc and

D-1 fused to a small, longish platelet, Dgl-3 separate; Dgl-4 fused with

D-3; D-4 unfused, the largest of the dorsal plates; V-1 as a roundish platelet,

V-2–4 not sclerotized coxal field: posterior margin Cx-1 convex, with a subcuticular protrusion I-L: slightly modified, I-L-5 with S-1 and -2 similar in shape and close to each other, I-L-6 nearly straight, distally thickened, with strong claw, ventral margin lacking groups of fine hairs excretory pore: sclerotized; Vgl-1: fused to Vgl-2 palp: ventral margins of P-2/3 convexly protruding, with smooth surface; P-4

slender, in sectors 2: 2: 1 due to ventral hair insertions, proximoventral hair inserted near a prominent denticle, distoventral hair without denticle,

sword seta proximally from proximoventral hair

Males

Original description:

genital field: roundish, with slightly convex posterior margin, gonopore short, restricted to the area of Ac-1, Ac equal in diameter; genital setae: 30 palp: P-4 more robust and with more numerous hairs as compared with female

Idiosoma L/W 530/410; glandularia – (low diameter)

coxal field L 250; Cx-3 W –; Cx-1 + 2 mL 83, IL –, W –

I-L no measurements; L I-L-5/6 (following Fig. 24 ) 1.18

genital field L/W 122/118, Ac-1–3 L –

gnathosoma –; chelicera L 121, L/H – (5.26?), bS/claw 2.18

Figures

Figure 24. Atractides distans. A–C, lectotype ♂, D–F, paralectotype ♀ G, ♂ Germany, Lausitz. A, ♂ palp, medial view; B, ♂ I-L-5 and -6; C, ♂ genital field; D, ♀ palp, medial view; E, ♀ genital field; F, ♀ I-L-5 and -6; G, ♂ coxal field. Scale bars = 100 µm.

Figure 51. A–G, Atractides pygmaeus, A–C, ♀ from Austria, D–F, after Motaş et al. (1958); G, after Pešic ¢ (2001). A, ♀ idiosoma, dorsal view; B, ♀ idiosoma, ventral view; C, ♀ I-L-5 and -6, Scale bars = 100 µm; D, ♂ ventral idiosoma; E, ♂ I-L-5 and -6; F, ♂ genital field; G, ♂ palp, medial view. H, I, Atractides microphthalmus ♂ after Motaş et al. (1958). H, palp; I I-L-5 and -6.