Javalbia K. Viets, 1935

Smit, Harry & Pešić, Vladimir, 2014, Water mites from Mount Kinabalu and the Crocker Range, Borneo, Malaysia (Acari: Hydrachnidia), with the description of 34 new species, Zootaxa 3876 (1), pp. 1-71 : 38

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Javalbia K. Viets, 1935


Genus Javalbia K. Viets, 1935

Diagnosis (after Cook 1974, revised). Characters of Axonopsalbia -like mites. Coxae not extending to anterior idiosoma margin. Anterior end of ventral shield entire, dorsal shield posteriorly unmodified. Male without cauda development. Dorsal and ventral shields completely separated. Dorsal shield with 2–4 pairs of glandularia, occasionally only associated setae present. Vgl- 4 either lying free or fused with ventral shield. Genital field with three pairs of acetabula, gonopore small and subterminal and fused with ventral shield in male, wider and acetabula lying on a pair of genital plates in female. Excretory pore either lying on a small platelet posterior to the genital field or fused with the dorsal shield. Excretory pore of female either fused with postgenital sclerite or separated. Glandularia in dorsal furrow lying on small or large platelets. IV-leg- 1 of male with a large dorsal seta. Palp with a slender P 5. Fourth leg of male either of normal size or enlarged, in the latter case with claws of different size.

So far, the genus Javalbia is known in 11 species described from the Oriental, Afrotropical and Palaearctic regions. The finding of as much as seven new species in Borneo is remarkable.

The key of Cook (1974) to separate females of Javalbia and Barbaxonella Lundblad, 1954 is not correct. Also in female Javalbia the genital plates are fused with the postgenital sclerite.