Atractides inflatus, Walter, 1925

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 : 197

ATRACTIDES INFLATUS ( WALTER, 1925) ( FIG. 28A–H )

Megapus inflatus Walter, 1925

Syn. A. granulatus (K. Viets, 1930) : Lundblad, 1956

Type series: Holotype ♀ NHMB Megapus inflatus ♀ ov. Walter Algerien 3.5.1924 coll. Gauthier; leg. Gauthier. Algérie. Mare près de l’Oued Kerma. 3.5.1924; XIII/16; Typus; Pr. 1316 Typ. ♀. State of conservation: good, idiosoma caudally cracked; gnathosoma ruptured; palps, chelicerae and left I-L separate, laterally.

Material examined: Megapus inflatus ♂ Walter Algerien 10.5.1925 coll. Gauthier; Typus; leg. Gauthier Algérie Acif Bognif à Bognit 10.V.1925; XIV/ 04; Pr. 1404 Typ ♂ [in reality no type, described by Walter (1928b) together with the following specimen]. State of conservation: good, but idiosoma including genital field longitudinally fractured, and palps damaged by crushing. Megapus inflatus ♀ ov. Walter Algerien 28.6.1925 coll. Gauthier Oued Aissi; Pr. 1409 ♀ ov.; Italy I 323, Sicily ( EN) Nicosia, Fiumetto di Sperlinga upstr. confluence Torrente Fiumetto, VB 43 77, 550 m, 18.04.1986 Gerecke (3/ 13/11); Morocco, MAR 3.94 78c Goldschmidt 1/0/0 .

Description:

General features dorsal integument: lineated (3–4/10); muscle attachments: unsclerotized I-L: I-L-5 with S-1 and -2 rather short, blunt, I-L-6 curved, basally and distally thickened, in the centre narrowed genital field: Ac in a weakly curved line excretory pore: smooth; Vgl-1: not fused to Vgl-2

palp: strong sexual dimorphism

Males

NHMB 14/04

genital field: anterior margin straight or slightly concave, posterior margin concavely indented; genital setae: 50

palp: ventral margin P-2 with lamellar extension strongly protruding in the distal third, P-3 with similar protuberance distally or in the centre of the segment, P-4 2: 2:1, ventral setae of P-4 long, sword seta curved, distally from the proximoventral hair idiosoma L/W 600/500; glandularia 20

coxal field L 293; Cx-3 W 369; Cx-1 + 2 mL 85, IL 202, W 279

I-L-5 dL 174, vL 123, dL/vL 1.41, HA-HC 46, 51, 62, dL/HB 3.41

S-1 L 74, L/ W 10.6, S-2 L 59, L/ W 8.4, interspace 13, L S-1/2 1.25

I-L-6 L 130, HA-HC 31, 25, 29, dL/HB 5.2; L I-L-5/6 1.34

genital field L/W 103/121, Ac-1–3 L 57, 61, 54

gnathosoma –; chelicera –

Figures

Figure 28. Atractides inflatus. A, ♂ SMF 3873 (holotype of A. inflatus granulatus = syn. to A. inflatus, SMF 3873); B, ♂ Sicily I 323; C, D, ♂ Algeria, coll. Gauthier, NHMB, E–H holotype ♀ NHMB. A, ♂ coxal field; B, ♂ genital field; C, ♂ I-L-5 and -6; D, ♂ palp, medial view; E, ♀ palp, medial view; F, ♀ genital field; G, ♀ I-L-5 and -6; H, ♀ coxal field. Scale bars = 100 µm.