Ilyodromus Sars, 1894

Shearn, Rylan, Halse, Stuart, Koenders, Annette, Schön, Isa & Martens, Koen, 2014, Redescriptions of six species of Ilyodromus Sars, 1894 (Crustacea, Ostracoda, Cyprididae) from New Zealand and Eastern Australia, Zootaxa 3878 (2), pp. 101-145 : 103

Genus Ilyodromus Sars, 1894

Type Species: Ilyodromus stanleyanus ( King, 1855)

Diagnosis (based also on descriptions in Danielopol & McKenzie 1977; De Deckker 1981; Sars 1894): Carapace of females larger than males but otherwise the same, often with longitudinal striations of varying complexity, in lateral view sub-rectangular and usually straight along dorsal hinge with LV slightly overlapping RV, in dorsal view often elongated and compressed. Internal view of both valves with calcified inner lamella usually broad anteriorly and posteriorly, and most species without inner lists or prominent selvage, calcified inner lamella of LV with up to two inner pegs (remnants of an inner list), of varying size, position and structure. An1 second segment with two segmented sensory Rome organ having distal flagella of varying length that can appear as another segment under low magnification, and with a long dorso-distal seta. An2 with natatory setae highly variable in length. Md palp with α seta short and spine-like distally, but with broad base, the β seta stout, covered with long setules, and almost of the same length as the α seta, the γ seta elongate and with short setules covering the distal half. Mx with seven setae on first palp segment and a spatulate second palp segment with three claws and three setae. Claw-like Sp of the CR hirsute and jointed at the base in all species, but can be thin, and more bristle-like. Male Mx prehensile palps with hook shaped distal segment, hemipenis with lobes ls and ms of variable shapes.