Atractides loricatus, Piersig, 1898

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 : 170-172

ATRACTIDES LORICATUS PIERSIG, 1898 ( FIG. 16A–F )

Syn. A. barsiensis ( Szalay, 1929) : Lundblad, 1956; A. firmus ( Walter, 1947) : syn. nov.

Type series: Lectotypus, here designated: NHMB Megapus loricatus ♀ Piersig Hohe Tatra coll. Piersig; Pr. 475; desiccated, all legs missing or only with basal segments, gnathosoma lateral, one palp lateral, the other one missing. Locus typicus: Tatra, Quellbach des Felklersees .

Material examined: MMB: (under the name of A. barsiensis ) 1109, 1228–5, Pramen nad Ostruznou Jeseniky. 7.8.1957 5 ♂, 1 ♀ .

Rejected determinations: (1) referring to A. brendle sp. nov.: MMB: 154; 1121–1. potok v Tatranske Pojané. 7.9.1956 1 ♀ 1049; 1107. Javorinka n novàrny pod Hamanem. Belan. Tatry. 4.9.1956 1 ♂. NHMB: Megapus loricatus ♀ juv. Piersig coll. Piersig; P.S. on two slides, idiosoma Pr. 476, gnathosoma (lateral, dissected) + I-L 476a, without collecting site identification; (2) referring to an unidentified species: Quelle zwischen Arabba und Prodoijoch. Dolomiten 1900 m; specimen without dorsal plates, erroneously published by Walter (1922b) under the name A. loricatus .

Description:

General features dorsal integument: striated (9/10); muscle attachments: sclerotized, postoc fused with D-1 and Dgl-3 (occasionally also prefr), Dgl-4 fused with D-3 coxal field: extended secondary sclerotization I-L: S-1 and -2 close together, homoiomorphic, with rounded tips; I-L-6 short and thick, curved, only slightly narrowed centrally excretory pore: smooth; Vgl-1: fused to Vgl-2 palp: weak sexual dimorphism

Males

Specimen from MMB

genital field: anterior margin straight or weakly convex, posterior margin deeply indented palp: ventral margin of P-3/-3 straight, ventral margin P-4 1: 1: 1, sword seta strong, near distoventral hair idiosoma L/W 470/330; glandularia 30

coxal field L 238; Cx-3 W 265; Cx-1 + 2 mL 99, IL 175, W 211

I-L-5 dL 119, vL 96, dL/vL 1.24, HA-HC 28, 35, 38, dL/HB 3.40

S-1 L 58, L/ W 9.7, S-2 L 55, L/ W 7.9, interspace 4; L S-1/2 1.05

I-L-6 L 85, HA-HC 22, 21, 23, dL/HB 4.05; L I-L-5/6 1.40

genital field L/W 103/112, Ac-1–3 L 26, 28, 31

gnathosoma vL 99; chelicera –

Figures

Figure 16. Atractides loricatus. A–C, lectotype ♀ NHMB, D–F, ♂ MMB 1109, 1228–5 (labelled A. barsiensis). A, ♀ coxal field; B, ♀ dorsal sclerites; C, ♀ genital field; D, ♂ idiosoma, ventral view; E, ♂ I-L-5 and -6; F, ♂ palp, medial view. Scale bars = 100 µm.