Out on a limb: novel morphology and position on appendages of two new genera and three new species of ectoparasitic isopods (Epicaridea: Dajidae) infesting isopod and decapod hosts
Author
Williams, Jason D.
Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (USA) jason. d. williams @ hofstra. edu (corresponding author)
Author
Boyko, Christopher B.
Department of Biology, Hofstra University, 1000 Hempstead Turnpike, Hempstead, NY 11549 (USA); and Division of Invertebrate Zoology, American Museum of Natural History, 200 Central Park West, New York, NY, 10024 (USA) cboyko @ amnh. org
cboyko@amnh.org
text
Zoosystema
2021
2021-02-16
43
4
79
100
journal article
8090
10.5252/zoosystema2021v43a4
f5c1cc3b-055c-41a7-8b9b-80a136141bad
1638-9387
4555463
urn:lsid:zoobank.org:pub:4F2A16F1-B100-4236-AD31-945896D6F910
TABLE 1. — Comparative characters of females in the 20 genera of Dajidae G. O. Sars, 1883. Higher level host taxon and the position on hosts or attachment site of the parasites,if known,is indicated in the first column. Two genera have no described females.Species of Dolichophryxus Schultz,1977 and Paraspidophryxus Schultz, 1977 described from cryptoniscus larva only, hosts are unknown. | | | Number of Number of | Number of | |
|---|
| Host taxon | Distinct | Pereon | pereopod | oostegite Number of | pleopod | |
|---|
| Genus | (position on host) | cephalon Segmented pairs | pairs | pleomeres pairs Uropods |
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| Aegophila Bresciani, 1966 | Isopoda | Yes | Rudimentary | 5 | 5 | 1 (fused) | 0 | No |
|---|
| (pereopod) |
|---|
| Akrophryxus n. gen. | Brachyura | No | No | 5 | 5 | 1 (fused | 0 | No |
|---|
| (antennule) | | | | | into plate) | | |
|---|
| Allophryxus Koehler, 1911 | Unknown | Yes | Yes | 5 | 5 | 5 or 6 | 2 | Yes |
|---|
| Antephyra Schultz, 1978 | Unknown | Yes | Yes | 5 | ? | 1 (fused) | 0 | No |
|---|
| Arthrophryxus | Lophogastrida | Yes | Yes | 4 | 5 | 5 | 0 | No |
|---|
| Richardson, 1908a | (unknown) | | | | | | | |
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| Aspidophryxus | Mysida | Yes | Rudimentary | 5 | 1 | 1 (fused; | 0 | No |
|---|
| G. O. Sars, 1883 | (between eyestalks, | | | | | vermiform) | | |
|---|
| carapace, thorax) | | | | | | | |
|---|
| Branchiophryxus | Euphausiacea | No | Rudimentary | 4 | 4 | 1 (fused) | 0 | No |
|---|
| Caullery, 1897 | (gills) | | | | | | | |
|---|
| Colophryxus | Unknown | Yes | Yes | 5 | ? | 1 (fused) | 0 | No |
|---|
| Richardson, 1908b | | | | | | | | |
|---|
| Dajus Krøyer, [1842] | Mysida | Yes | Yes | 5 | 5 | 4 | 1+ | Yes |
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| (in marsupium) | | | | | | | |
|---|
| Heterophryxus G. O. | Euphausiacea | No | Yes | 5 (terminal | 5 | 1 (fused) | 0 | No |
|---|
| Sars, 1885 | (eyestalks; attaches | | | pair highly | | | | |
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| with 5th pereopods) | | modified) | | | | |
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| Holophryxus | Caridea & | Yes | Rudimentary | 5 | 5 | 1 (fused) | 0 | No |
|---|
| Richardson, 1905 | Sergestoidea | | | | | | | |
|---|
| (carapace) |
|---|
| Notophryxus G. O. | Euphausiacea | Yes | Yes | 5 | 1 (fused) | 1 (fused) | 0 | No |
|---|
| Sars, 1883 | (abdomen, carapace, | | | | | | |
|---|
| gill, pereopod) | | | | | | | |
|---|
| Oculophryxus Shields & | Euphausiacea | No | Rudimentary | 4 | 1 (fused) | 1 (fused) | 0 | No |
|---|
| Gómez-Gutiérrez, 1996 | (eyestalks; attaches | | | | | | | |
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| with antennae) | | | | | | | |
|---|
| Prodajus Bonnier, 1903 | Mysida | Yes | No | 5 | 5 | 4 or 5 | 0 | Yes |
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| (in marsupium) | | | | | | | |
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| Prophryxus | Unknown | Yes | Yes | 5 | 2? | 5 Rudimentary? | ? |
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| Richardson, 1909 | | | | | | | | |
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| Streptodajus Nierstrasz & | Mysida | No | Yes | 5 | ? | 1 (fused, | 0 | No |
|---|
| Brender à Brandis, 1923 | (unknown) | | | | | with slight | | |
|---|
| | | | | | dorsal | | |
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| | | | | | indications) | |
|---|
| Telephryxus n. gen. | Anomura | No | No | 5 | 5 | 1 (fused | 0 | No |
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| (antennule) | | | | | into plate) | | |
|---|
| Zonophryxus | Caridea | No | Rudimentary | 5 | 5 | 1 (fused) | 1 | No |
|---|
| Richardson, 1904 | (carapace) | | | | | | | |
|---|