A dichotomous key to the genera of the Marine Heterotardigrades (Tardigrada) Author Fontoura, Paulo Author Bartels, Paul J. Author Jørgensen, Aslak Author Kristensen, Reinhardt Møbjerg Author Hansen, Jesper Guldberg text Zootaxa 2017 4294 1 1 45 journal article 32663 10.11646/zootaxa.4294.1.1 4e098c30-d7f2-49d2-9d71-4a2815d76e06 1175-5326 831540 F7EC0547-6984-4C85-B1BF-010C049D0F2D 1.2 BATILLIPEDIDAE Ramazzotti, 1962 (emended by Gallo d’Addabbo et al. 2005 ) Arthrotardigrada with a trapezoid head divided into three parts: two lateroventral triangular lobes bearing all the cephalic cirri (except the medial cirrus) along with the primary and secondary clavae, and a central lobate portion with the medial cirrus. 15. In the terminology of this key “internal accessory point” = secondary point. Simple cephalic cirri with lance-like or frayed tips. Tubular primary clavae with or without one or more constrictions; papillar secondary clavae, not always evident. Lipoid eye spots sometimes present. Stylet supports always present. Lateral intermetamerical processes present or absent. Legs digitate with four or six toes, according to the age, bearing terminal adhesive discs. Claws absent. Sense organs present on all the legs. Cirrus E dorsal to the fourth pair of legs. A longitudinal groove generally present between the rosette-like female gonopore and the anus. Single internal seminal receptacle16 sometimes present, opposite the oviduct. Circular male gonopore covered with a crescent fold. Caudal apparatus present or absent. Cuticular punctations, consisting of pillars in the epicuticle, always present. Dorsal cuticular pillars always higher than the ventral ones. 1.2.1 Batillipes Richters, 1909 ( Figs 3 E, 7I , 14G) Generic diagnosis as that of the family. Type species: Batillipes mirus Richters, 1909 Selected literature for further information: Pollock (1970) defined patterns of toe length of Batillipes species, and Pollock (1971) included an early key to this genus. McKirdy (1975) summarized and discussed the taxonomic characters within the genus. Kristensen (1978) introduced new characters for the genus Batillipes using the electron microscope. Rho et al. (1999) provided a more recent key, but only covered Korean species. Kristensen & Mackness (2000) suggested a toe formula for all known species at that time. See also Jørgensen et al. (2014) , Menechella et al. (2015) , Rubal et al. (2016) , and Menechella et al. (2017) for a comprehensive key to all known species.