Atractides remyi
Creators: name: Gerecke, Reinhard
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Trombidiformes
Hygrobatidae
Atractides
Atractides remyi

description: ATRACTIDES REMYI (ANGELIER, 1951)   
 Megapus remyi Angelier, 1951   
 Syn. to A. latipes (Szalay, 1935): Angelier, 1954a   
 Type series: No access. Loci typici: France, Corse. Golo, près de Ponte- Castirla, 280 m, 25.08.1950, 2 ♀; Golo, à Ponte-Leccia, 160 m, 30.08.1950, 1 ♀; Rivière du Vecchio, sous le col de Vizzavona, 980 m, 20.08.1950, 1 ♀.   
 Discussion: In the preliminary publication, the author discussed only the diagnostic differences with A. distans and A. diastema, two taxonomically distant species. Later he noticed the similarity to A. latipes, and synonymized A. remyi with that species. Most measurements slightly exceed the values provided here for A. latipes, but the important proportions are in good agreement (e.g. I-L-5 dL/HB 2.43, L I-L-5/6 1.38). Dimensions of the palp as calculated from Angelier’s data are (L/H, L/H ratio, relative L): P-1 25/24, 1.04, 09; P-2 58/40, 1.45, 21; P-3 76/36, 2.11, 27; P-4 84/25, 3.36, 30; P-5 34/–, -, 12; total L 277, P-2/4 ratio 0.69.   
 However, the (admittedly sketchy) figures of the specimens from Corsica published in 1954 depict the following differences to A. latipes: S-1 and -2 sharply pointed, not blunt, and S-1 considerably enlarged, I-L-6 extremely narrowed at HB, and setation of palps rather uniform, without particularly enlarged and flattened dorsal setae. For the time being the synonymization of A. remyi with A. latipes is accepted, but we should keep in mind that in Corsica the presence of a modified island sister species of A. latipes is possible. This should be clarified by future variability studies.   
 ATRACTIDES GRACILIPES (ANGELIER, 1951)   
(FIG. 58A–C)  
 Megapus gracilipes Angelier, 1951   
 Type series: No access. Locus typicus: France, Corse, Ruisseau affluent du San Pietro, au pied du col de Bavella, sous un pont de bois de la route Forestière 4, 400 m environ, 27.08.1950, 1 ♂.   
 Description:   
 General features   
Original description, female unknown dorsal integument:?; muscle attachments: not sclerotized coxal field: mediocaudal margin of Cx-1 between apodemes of Cx-2 extremely narrow; suture lines Cx-3/4 curved, in their medial part directed to the posterior margin of Cx-3 + 4  
I-L: I-L-5 not enlarged distally, S-1 and -2 moderately distanced, S-1 longer and more slender than S-2; I-L-6 curved, equal in H all over the segment, claws strong excretory pore: sclerotized; Vgl-1: fused to Vgl-2  
palp: probably without sexual dimorphism, ventral margin P-2 equally convex, P-3 nearly straight, but in the distal part convex, P-4 1: 1: 1, rather slender, sword seta near proximoventral hair  
 Male   
Original description genital field: round, anteriorly convex, posteriorly slightly indented, gonopore extending from Ac-1 to Ac-3, Ac in triangular position; genital setae: 30 idiosoma L/W 600/450; glandularia petites coxal field L 320; Cx-3 W –; Cx-1 + 2 –  
I-L-5 dL 150, vL –, dL/vL –, HA-HC –, dL/HB –  
S-1 L 95, L/W –, S-2 L 75, L/W –, interspace –, L S-1/2 1.26  
I-L-6 L 120, HA-HC –, dL/HB –; L I-L-5/6 1.25  
genital field L/W 105/120, Ac-1–3 L –  
gnathosoma –; chelicera –
description: Published as part of Gerecke, Reinhard, 2003, Water mites of the genus Atractides Koch, 1837 (Acari: Parasitengona: Hygrobatidae) in the western Palaearctic region: a revision, pp. 141-378 in Zoological Journal of the Linnean Society 138 on page 269, DOI: 10.1046/j.1096-3642.06-0.00051.x, http://zenodo.org/record/5433518