Dactyloscirus Berlese, 1916

Corpuz-Raros, Leonila A., Naredo, Jeremy C. B., Lit, Ireneo L. & Caasi-Lit, Merdelyn T., 2022, Two new species of the genus Dactyloscirus (Acari: Prostigmata: Bdelloidea Cunaxidae) from Sumatra, Indonesia, with a key to known species, Zootaxa 5214 (1), pp. 89-103 : 91

Genus Dactyloscirus Berlese, 1916

Dactyloscirus Berlese, 1916: 132 (subgen. of Scirus ); Thor and Willmann 1941: 173.

Type species: Scirus (Dactyloscirus) eupaloides Berlese, 1916 , by original designation.

Diagnosis. Generally pale yellow to light brown or orange. Pedipalps 5-segmented, with at least the terminal segment extending beyond subcapitulum; hyaline bulbous-tipped apophyses usually present on inner margin of telofemur and on joint of genu and tibiotarsus; the latter may be elongated, pointed or blunt apically, or less frequently inconspicuous or absent. Pedipalpal basifemora and telofemora with spine-like dorsal seta.

Idiosoma covered dorsally with large propodosomal and variously developed hysterosomal shields in females, and more extensive dorsal shield covering almost entire idiosoma in males. Two pairs of long and plumose trichobothria (vi and sce) and 2 pairs of short and smooth tactile setae (ve and sci) on propodosomal shield, and 7 pairs on hysterosoma— c 1, d 1, e 1, f 1 and h 1 medially, and c 2 and h 2 laterally, setae h 2 often displaced ventrally on tapered posterior portion. Two pairs of cupules present: im dorsally near seta e 1, and ih ventrally near seta h 2. Ventrally on idiosoma, coxal plates I–II and III–IV contiguous, each usually bearing 3 tactile setae; genital plates large, each with 4 genital setae and 2 papillae; anal plates less distinct and striated like surrounding soft cuticle, with 1 pair of anal setae (ps 1) arising on the plate, and the 2 nd pair (ps 2) located outside it (thus the term para-anal also applied to it), together with the ventrally displaced seta h 2; additional 4 – 7 pairs of hysterogastral setae also present between posterior coxal and genital shields.

Legs relatively short, usually not exceeding ¾ of the total body length; each leg ends in a pair of claws and 4-rayed empodium; tarsi constricted apically forming conspicuous tarsal lobes that are completely separated from distal end of tarsi II – IV, and incompletely separated on tarsus I. Attenuate solenidia usually present on genua, tibiae and tarsi; famulus present on tarsus I, basally enlarged and usually ends in three tiny prongs; tibia IV always smooth trichobothrium. One of the dorsal tactile setae on basifemora III, IV and telofemora III, IV enlarged, long and spiculiform.