A Phylogeny and Classification of the Senticaudata subord. nov. (Crustacea: Amphipoda) Author Myers, A text Zootaxa 2013 3610 1 1 80 journal article 10.11646/zootaxa.3610.1.1 126b5f67-71bb-46e4-874c-7f8864ea8cd1 1175-5326 283309 AA71AC2D-C7BF-43AE-9E25-29A5EC843B89 Chillagoeidae Lowry & Myers, 2012 Type genus. Chillagoe Barnard & Williams, 1995 . Diagnostic description. Body laterally compressed. Eyes absent. Antennae 1–2 calceoli crangonyctoid ( type 9) . Antenna 1 subequal in length or longer than antenna 2; peduncular article 1 subequal to, or longer than article 2; article 2 longer than article 3; article 3 shorter than article 1; peduncular articles 1–2 not geniculate; accessory flagellum short. Antenna 2 peduncular article 1 enlarged, bulbous. Mandible molar triturative; palp symmetrical. Maxilla 1 basal endite setose along medial margin or apically setose; palps symmetrical. Maxilla 2 basal endite without oblique setal row. Labium inner lobes vestigial or absent. Coxal gills on pereopods 2–6, stalked (without proximal restriction) or not stalked; sternal gills present, simple; sternal blisters absent; oostegites fringing setae simple. Gnathopod subchelate; 1 similar in males and females (not sexually dimorphic); smaller (or weaker) than or similar in size to gnathopod 2; propodus palm without robust setae along palmar margin. Gnathopod 2 subchelate; 1 similar in males and females (not sexually dimorphic); carpus slightly produced along posterior margin of propodus or not produced along posterior margin of propodus, projecting between merus and propodus. Pereopods 3–4 not sexually dimorphic. Pereopod 4 with well developed posteroventral lobe or with small posteroventral lobe or without posteroventral lobe. Pereopod 5 shorter than pereopod 6; coxa with small anteroventral lobe. Pereopod 7 subequal in length to, or longer than pereopod 5. Pleonites 1–3 without dorsal carinae. Urosomites 1–3 free; with slender or robust dorsal setae. Urosomite 1 with large distoventral robust seta. Urosomite 2 with pair of dorsal concavities each with 1–3 small setae . Uropod 1 with 1 or 2 basofacial robust setae. Uropod 3 not sexually dimorphic; uniramous, without plumose setae. Telson deeply cleft ; dorsal or lateral robust setae present or absent; apical robust setae present. Habitat. Freshwater, hypogean. Included genera. Chillagoe Barnard & Williams, 1995 . Distribution. Tropical Australia .