Javalbia (Javalbicula) turcica, Esen, Yunus, Pešić, Vladimir & Erman, Orhan, 2011

Esen, Yunus, Pešić, Vladimir & Erman, Orhan, 2011, Water mites of the family Aturidae Thor, 1900 from Turkey (Acari: Hydrachnidia), with description of two new species, Zootaxa 2746, pp. 25-42 : 33-37

Javalbia (Javalbicula) turcica sp. nov.

( Figs. 7A–D , 8A–G )

Type series. Holotype: male, dissected and slide-mounted in Hoyer's fluid, Bingöl Province, Solhan, Masalla stream, 38°57'44"N 40°56'13"E, 1260 m asl., 26.viii.2008, Paratypes: same data as holotype, (0/1/0); ibid., 18.vii.2010, (4/10/0); ibid., 03.viii.2010, (5/3/0).

Further records. Bingöl Province, Yayladere, Deġirmen stream, 39°07'14"N 40°04'00"E, 1030 m asl., 03.viii.2010, (6/6/0); Genç, Kale stream, 38°31'41"N 40°32'40"E, 920 m asl., 04.viii.2010, (2/1/0).

Diagnosis. Two pairs of glandularia platelets lying between dorsal and ventral shield greatly enlarged, the posterior pair formed by the fusion of two glandularium platelets; genital field of male fused into the ventral shield with a distinct indication of a suture line; genital field with four pairs of Ac; excretory pore lying on a small platelet posterior to the genital field in males, but fused with the postgenital sclerite in females.

Description. Male: Dorsal shield ( Fig. 7A ) L/W 438/316, flanked by two pairs of elongated glandularia platelets, anterior pair in L 121, posterior pair formed by the fusion of two glandularium platelets, L 145; ventral shield ( Fig. 7B ) (including genital field) L/W 434/311, capitular bay L 77; anterior coxae not extending to anterior end of ventral shield; genital field fused into the ventral shield with a distinct indication of a suture line; genital field with four pairs of Ac; W between the most lateral pair of Ac 112; genital field flanked posteriorly by enlarged glandularia platelets; the small glandularia, each bearing two setae, present posterior to the genital field; excretory pore located on platelet which is much wider than long. Palp ( Fig. 8E ) total L 152, dL and %L (in parentheses): P-1 21 (13.8); P-2 35 (23.0); P-3 23 (15.1); P-4 51 (35.5); P-5 22 (14.5); L ratio P-2/P-4, 0.69; capitulum ventral L 81; chelicera total L 120. Legs: dL of I-L: 34-23-33-42-54-50 = 236; dL of II-L: 40-35-36-40-57-62 = 270; dL of III-L: 41-37-33-40-53-63 = 267; dL of IV-L: 58-55-53-62-66-68 = 362; III-L-5 with one swimming seta; IV-L-5 with two swimming setae ( Figs. 8 A-D).

Female: Similar to male, except in shape of the genital field; dorsal shield ( Fig. 7C ) L/W 456/335, anterior pair of elongated glandularia platelets of dorsum L 126, posterior pair L 140; ventral shield ( Fig. 7D ) (including genital field) L/W 448/138, capitular bay L 78; W between outer edges of acetabular plates 138; the acetabular plates separated from the postgenital sclerite; excretory pore fused with the postgenital sclerite; a pair of enlarged glandularia platelets located immediately lateral to the anterior end of acetabular plates. Palp ( Fig. 8G ) total L 161, dL and %L (in parentheses): P-1 21 (13.0); P-2 35 (21.7); P-3 25 (15.5); P-4 52 (32.3); P-5 28 (17.4); L ratio P-2/P-4, 0.67; capitulum ventral L 85; chelicera total L 96. Legs: dL of I-L: 36-25-31-43-50-49 = 234; dL of II-L: 42-35-40-38- 53-54 = 262; dL of III-L: 43-34-38-48-56-62 = 281; dL of IV-L ( Fig. 8F ): 68-50-51-62-63-62 = 356; leg and palp chaetotaxy as in the male.

Etymology. Named after the country of the type locality.

Discussion. Due to the presence of four pairs of acetabula the new Javalbia species from Turkey should be assigned to the subgenus Javalbicula which includes two so far known species: Javalbia lata K. O. Viets & Böttger, 1974 from Central Africa ( K. O. Viets & Böttger 1974) and J. ovata Kim & Chung, 1996 from Korea ( Kim & Chung 1996). Javalbia turcica sp. nov., can be easily distinguished from both species in the presence of two greatly enlarged glandularia platelets between dorsal and ventral shield (three small glandularia platelets between dorsal and ventral shield in J. lata and J. ovata ). Further differences are found in the presence of an indistinct suture line between genital field and ventral shield in the male of Javalbia ovata (see: Kim & Chung 1996), and the excretory pore laying on the posterior margin of dorsal shield in J. lata (see: K. O. Viets & Böttger 1974).

Habitat. The specimens of Javalbia turcica sp. nov. were collected in a sandy/bouldery stream, often with considerably exposure to sunlight ( Fig. 11A ).

Distribution. Turkey (Bingöl Province).

Figures

FIGURE 7 A – D. Javalbia (Javalbicula) turcica sp. nov., (A – B = male, C – D = female): A = idiosoma, dorsal view; B = idiosoma, ventral view; C = idiosoma, dorsal view; D = idiosoma, ventral view. Scale bar = 100 μm.

FIGURE 8 A – G. Javalbia (Javalbicula) turcica sp. nov., (A – E = male, F – G = female): A = I-L- 1 - 6; B = II-L- 1 - 6; C = III-L- 2 - 6; D = IV-L- 1 - 6; E = gnathosoma and left palp, lateral view; F = IV-L- 1 - 6; G = palp, medial view. Scale bar = 100 μm.

FIGURE 11 A. Sampling site of Javalbia (Javalbicula) turcica (Bingöl Province, Solhan, Masalla Stream). Photos: Yunus Esen.