Kairosidae
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publication ID |
https://doi.org/ 10.11646/zootaxa.3731.3.11 |
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publication LSID |
lsid:zoobank.org:pub:2BB45C7C-B79D-4E5C-8A82-D080086FCD02 |
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DOI |
https://doi.org/10.5281/zenodo.6149233 |
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persistent identifier |
https://treatment.plazi.org/id/3857D760-0073-AB66-FF1D-FBDCFDE68BAB |
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treatment provided by |
Plazi |
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scientific name |
Kairosidae |
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Kairosidae View in CoL fam. nov.
Type genus. Kairos gen. nov. Krapp-Schickel & Müller.
Diagnostic description. Body laterally compressed. Eyes well developed, round. Antennae 1–2 calceoli absent. Antenna 1 longer than antenna 2; peduncular article 1 subequal to article 2; article 2 longer than article 3; article 3 shorter than article 1; peduncular articles 1–2 not geniculate. Antenna 2 peduncular article 1 not enlarged. Mandible molar triturative; palp symmetrical. Maxilla 1 basal endite apically setose; palps symmetrical. Maxilla 2 basal endite without oblique setal row. Labium inner lobes present. Coxal gills number and sequence [not known], not stalked; sternal gills absent; sternal blisters absent; oostegites fringing setae simple. Gnathopod 1 subchelate; smaller (or weaker) than gnathopod 2; propodus palm without robust setae along palmar margin. Gnathopod 2 subchelate; similar in males and females (not sexually dimorphic); carpus slightly produced along posterior margin of propodus. Pereopods 3–4 not sexually dimorphic. Pereopod 4 without posteroventral lobe. Pereopod 5 coxa with small anteroventral lobe. Pleonites 1– 3 without dorsal carinae. Urosomites 1–2 coalesced, 3 free; without 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 deeply cleft ; dorsal or lateral robust setae absent; apical robust setae absent.
Remarks. Kairosids are similar to the endemic Mediterranean carangoliopsids. However, carangoliopsids are subcylindrical amphipods with very small, discontiguous coxae, with gnathopod 2 dissimilar in form between males and females, with the carpus of gnathopod 1 shorter than the propodus, with well developed dactyli on the pereopods, with a relatively short merus on pereopod 3 and 4, with non-coalesced urosomites, with styliform rami on uropods 1 and with a basofacial robust seta on the peduncle of uropod 1.
Habitat. Marine, epigean.
Included genera. Kairos gen. nov. Krapp-Schickel & Müller.
Distribution. Society Islands.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.