Cumoechidae Boyko & Williams 2023, n. fam.
Family Cumoechidae n. fam. (Fig 4J) https://zoobank.org/ urn:lsid:zoobank.org:act: 603E3A47-7E2D-454E-A42A-F0D7CA01656C Diagnosis: Epicaridium larva with antennules as long as body; setae on antennules and uropodal exopod and endopod as long as or longer than body. Cryptoniscus larva/male body elong...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2023
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| Online Access: | https://zenodo.org/record/7781619 https://doi.org/10.5281/zenodo.7781619 |
| Summary: | Family Cumoechidae n. fam. (Fig 4J) https://zoobank.org/ urn:lsid:zoobank.org:act: 603E3A47-7E2D-454E-A42A-F0D7CA01656C Diagnosis: Epicaridium larva with antennules as long as body; setae on antennules and uropodal exopod and endopod as long as or longer than body. Cryptoniscus larva/male body elongate. Head longer than wide, conical, posterior margin no wider than pereomere 1; eyes absent. Antennule article 1 elongate with ca. 16 marginal acute teeth. Coxal plates with posterior margins toothed. Pereopods 1–3 gnathopodal, 4–7 ambulatory with propodi tapering distally, dactyli as long as propodi. Pleotelson margin with 10 teeth, distalmost pair longest. Mature female spheroid in dorsal view, dorsoventrally compressed, segmented, ventral surface with long median cleft and raised segmented pad surrounding cleft; anterior region with reduced antennae and pair of pereopods. Parasitizing cumaceans. Included genus and species: Cumoechus Hansen, 1916, type genus (type species = Cumoechus insignis Hansen, 1916 by monotypy). Distribution: South of Jan Mayen, Norway (69°31’N, 07°06’W), 1309 fms (2394 m); northwest of the Faeroes, Denmark (63°26’N, 07°56’W and 61°08’N, 09°28’W), 436–471 fms (797–861 m); southwest of the Faeroes, Denmark (61°08’N, 09°28’W), 436 fms (797 m) (Hansen 1916). Hosts: Cumacea: Diastylis echinata Spence Bate, 1865, D. polaris G. O. Sars, 1871, Hemilamprops cristatus (G. O. Sars, 1870) (Hansen 1916). Remarks: Nierstrasz & Brender à Brandis (1931) noted similarities between the females of the nebaliacean parasite Apocumoechus paranebaliae Nierstrasz & Brender à Brandis, 1931 and Cumoechus insignis Hansen, 1916 and placed both species in Cabiropidae, although with hesitation and noting that the cabiropids represented a heterogenous grouping. Danforth (1970) proposed a new subfamily of Cryptoniscidae, Apocumoechinae, to contain the nebaliacean parasite and another new subfamily, Cumoniscinae, to include Cumoniscus Bonnier, 1903 and Cumoechus; this work was not published (i.e., not recognized by ... |
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