Torrenticola lundbladi ( K. Viets, 1930 )

Pešić, Vladimir, Valdecasas, Antonio G. & García-Jimenez, Ricardo, 2012, Simultaneous evidence for a new species of Torrenticola Piersig, 1896 (Acari, Hydrachnidia) from Montenegro, Zootaxa 3515, pp. 38-50 : 43-45

Torrenticola lundbladi ( K. Viets, 1930)

( Figs. 5A–F , 6 , 7B,D , 8B,D , 9B–C, E–F )

Material examined. Spain, Segovia, Sierra de Guadarrama, Eresma stream (40º50.590' N, 4º01.657' W), 29.v.2012 and 19.vi.2012, 1/1/0 (mounted), 2/2/0 in voucher collection for LSCM and molecular study.

General features. Shoulder platelets fused to dorsal plate, but suture line visible; area of primary sclerotization of the dorsal plate with two dorsoglandularia; posterior suture line of Cx-4 indistinct; postgenital area large; excretory pore and Vgl–2 posterior to the line of primary sclerotization; distal margins of P-2 and -3 without denticles, ventral protuberance of P-4 unpaired, with one longer, and three shorter hairs; capitular rostrum ( Figs. 5D, F ) relatively long and slender (L/H ratio 2.0–2.4).

Description. Male: Idiosoma (ventral view: Fig. 5B , 7D ) L 819, W 638; dorsal shield ( Fig. 5A , 7B ) L 688, W 534, L/W ratio 1.29; dorsal plate 653; frontal platelets L 141–144, W 58, L/W ratio 2.4–2.5; capitular bay L 140; Cx-1 total L 322, Cx-1 mL 181, Cx-2+3 mL 125; ratio Cx-1 L/Cx-2+3 mL 2.6; Cx-1 mL/Cx-2+3 mL 1.45; genital field L/W 159/131, L/W ratio 1.2; ejaculatory complex as in Figure 5C , L 255; distance genital field–excretory pore 122, genital field–caudal idiosoma margin 200; capitulum ( Fig. 5D , 9B,E–F ) vL 298; chelicera total L 334; palp ( Fig. 5E ): total L 316, dL: P-1, 37; P-2, 98; P-3, 62; P-4, 97; P-5, 22; P-2/P-4 ratio 1.01.

Female: Idiosoma (ventral view: Fig. 6 , 8D ) L 956, W 856; dorsal shield ( Fig. 7D ) L 831, W 719, L/W ratio 1.16; dorsal plate 797; frontal platelets L 166, W 72–73, L/W ratio 2.3; capitular bay L 173; Cx-1 total L 347, Cx-1 mL 172, Cx-2+3 mL 20; ratio Cx-1 L/Cx-2+3 mL 17.4; Cx-1 mL/Cx-2+3 mL 8.6; genital field L/W 203/200, L/ W ratio 1/02; distance genital field–excretory pore 253, genital field–caudal idiosoma margin 371; capitulum ( Fig. 5F , 9C ) vL 338; chelicera total L 411; palp: total L 373, dL: P-1, 45; P-2, 116; P-3, 72; P-4, 117; P-5, 23; P-2/P-4 ratio 0.99.

Remarks. After the original description ( K.Viets 1930), only one further record was published by Lundblad (1956) who showed that the male allotype of T. lundbladi designated by K.Viets was not conspecific, but represented T. ungeri . Our specimen from Segovia ( Spain) agrees well with the description of T. lundbladi by Lundblad (1956) for the male and by K. Viets (1930) for the female.

Habitat. Rhitrobiont; sandy/bouldery streams with well developed riffle areas ( Fig. 10 ).

Distribution. Spain ( K. Viets 1930, Lundblad 1956; present study).

Figures

FIGURE 6. Torrenticola lundbladi (K. Viets, 1930), female: ventral shield. Scale bar = 100 µm.

FIGURE 10. Sampling site (Eresma stream in Sierra de Guadarrama, Spain) of Torrenticola lundbladi (K. Viets). Photo: A. Valdecasas.

FIGURE 5 A – G. Torrenticola lundbladi (K. Viets, 1930) (A – E male, F female): A = dorsal shield, B = ventral shield, C = ejaculatory complex (mounted), D = capitulum and chelicera; E = capitulum, ventral view, E = palp, medial view, F = capitulum and chelicera, lateral view. Scale bars = 100 µm.

FIGURE 7 A – D. LSCM images of dorsal shield (A – B male, C – D female): A – C = Torrenticola lukai sp. nov. B – D = Torrenticola lundbladi (K. Viets, 1930). Scale bars = 100 µm.

FIGURE 8 A – D. LSCM images of ventral shield (A – B male, C – D female): A – C = Torrenticola lukai sp. nov. B – D = Torrenticola lundbladi (K. Viets, 1930). Scale bars = 100 µm.

FIGURE 9 A – F. LSCM images of gnathosoma: A, D Torrenticola lukai sp. nov. (A female, D male). B – C, E – F Torrenticola lundbladi (K. Viets, 1930) (B, E – F male, C female): A – C = capitulum and palps; D – E = capitulum, ventral view; E = capitulum, dorsal view. Scale bars = 50 µm.