Crymostygidae Kristjansson & Svavarsson 2004

• Main Author: Myers, A
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Amphipoda; Crymostygidae; Myers; Seta; Iceland
• Online Access: https://zenodo.org/record/6150695; https://doi.org/10.5281/zenodo.6150695

Crymostygiidae Kristjánsson & Svavarsson, 2004 Crymostygidae (sic) Kristjánsson & Svavarsson, 2004: 188. Type genus. Crymostygius Kristjánsson & Svavarsson, 2004. Diagnostic description. Body subcylindrical. Eyes poorly developed. Antennae 1–2 calceoli absent. Antenna 1 slightly longer than antenna 2; peduncular article 1 slightly 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 or minute. Antenna 2 peduncular article 1 enlarged, bulbous. Mandible molar triturating; palp symmetrical. Maxilla 1 basal endite setose along medial margin; palps symmetrical. Maxilla 2 basal endite without oblique setal row. Labium inner lobes vestigial or absent. Coxal gills number and sequence [not known], stalked (with proximal restriction or complete suture) or stalked (without proximal restriction); sternal gills present, simple; sternal blisters absent; oostegites fringing setae simple. Gnathopod 1 subchelate; similar in size to gnathopod 2; propodus palm with row or rows of simple or bifid robust setae along palmar margin. Gnathopod 2 subchelate; carpus not produced along posterior margin of propodus, projecting between merus and propodus. Pereopods 3–4 not sexually dimorphic. Pereopod 4 without posteroventral lobe. Pereopod 5 shorter than pereopod 6; coxa with small anteroventral lobe. Pereopod 7 longer than pereopod 5. Pleonites 1–3 without dorsal carinae. Urosomites 1–3 free; with slender or robust dorsal setae. Urosomite 1 without large distoventral robust seta. Urosomite 2 without dorsal setae. Uropod 1 without basofacial robust setae. Uropod 3 biramous, without plumose setae; endopod minute. Telson entire; dorsal or lateral robust setae absent; apical robust setae present. Habitat. Freshwater, hypogean. Included genera. Crymostygius Kristjánsson & Svavarsson, 2004. Distribution. Iceland. Published as part of Myers, A, 2013, A Phylogeny and Classification of the Senticaudata subord. nov. (Crustacea: ...