Copepoda taxon details
Dioithona Kiefer, 1935
346356 (urn:lsid:marinespecies.org:taxname:346356)
accepted
Genus
Dioithona alia Kiefer, 1935 accepted as Oithona rigida Giesbrecht, 1896 accepted as Dioithona rigida (Giesbrecht, 1896) (type by original designation)
- Species Dioithona horai (Sewell, 1934)
- Species Dioithona indogallica Lindberg, 1940
- Species Dioithona minuta Shuvalov, 1980
- Species Dioithona oculata (Farran, 1913)
- Species Dioithona propinqua Herbst, 1964
- Species Dioithona rigida (Giesbrecht, 1896)
- Subspecies Dioithona rigida aurea Lindberg, 1950 accepted as Dioithona rigida (Giesbrecht, 1896)
- Subspecies Dioithona rigida elongata Lindberg, 1950 accepted as Dioithona rigida (Giesbrecht, 1896)
- Species Dioithona alia Kiefer, 1935 accepted as Oithona rigida Giesbrecht, 1896 accepted as Dioithona rigida (Giesbrecht, 1896) (synonym according to Nishida, 1985)
- Species Dioithona aurea Lindberg, 1948 accepted as Oithona rigida Giesbrecht, 1896 accepted as Dioithona rigida (Giesbrecht, 1896) (listed as synonym by Nishida, 1985)
marine, brackish, fresh, terrestrial
Kiefer, F. (1935). Zur Kenntnis der Oithonidae (Crustacea Copepoda Cyclopoida). [On the knowledge of the Oithonidae (Crustacea Copepoda Cyclopoida).]. <em>Zoologischer Anzeiger.</em> 112(11-12):322-327, figs. 1-9. (15-xii-1935). [details] Available for editors 
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Taxonomic remark to raise Dioithona from subgenus to genus was based not only on the two setae on the expopod of leg 5 (original reason for...
Taxonomy Vervoort (1964) believes that the creation of this genus rests on a character that is too restrictive and suggests to...
Taxonomic remark to raise Dioithona from subgenus to genus was based not only on the two setae on the expopod of leg 5 (original reason for the separation from Oithona), but also by the absence of pores laterally on the male prosome. These pores were first described on two coastal zone male oithonids (Ferrari, 1977) and later extended to several oceanic species (Ferrari & Bowman, 1980). Nishida (1986) described the fine structure of the cilia associated with the pores, and Uchima (1985) and Uchima & Murano (1988) proposed their function in searching for females. Pores also have been described on males of Limnoithonatetraspina (Cyclopettidae) see Abihay et al, 2007) and the planktonic males of Pachypygus gibber (Notodelphyidae) see Hipeau-Jacquotte (1984). And based on their broader distribution of male pores within Cyclopoida, absence of pores on males of the two Dioithona I studied appears to be a derived apomorphy, strengthening the taxonomic conclusion. However, pores have not been described on males of O. bjornbergae, Paroithonapacifica, Limnoithona sinensis or sedentary males of Pachypygus gibber, nor on any other species of Oithona with two setae on the exopod of leg 5. Much work on oithonids remains. [details]
Taxonomy Vervoort (1964) believes that the creation of this genus rests on a character that is too restrictive and suggests to...
Taxonomy Vervoort (1964) believes that the creation of this genus rests on a character that is too restrictive and suggests to consider it only as a subgenus of Oithona. This opinion is followed by Wellershaus (1970) who reviews several characters in some Oithona species. Shuvalov (1980, p.86, 169) considers the genus as justified. Meanwhile, after examination of the males and on the basis of a phylogenetic analysis (Abiahy, 2000), Boxshall & Hasley (2004, p.611) restore the validity of the genus Dioithona. 4 spp. (+ 1 doubtful). [details]
Walter, T.C.; Boxshall, G. (2025). World of Copepods Database. Dioithona Kiefer, 1935. Accessed at: https://www.marinespecies.org/copepoda/aphia.php?p=taxdetails&id=346356 on 2025-12-28
Date
action
by
original description
Kiefer, F. (1935). Zur Kenntnis der Oithonidae (Crustacea Copepoda Cyclopoida). [On the knowledge of the Oithonidae (Crustacea Copepoda Cyclopoida).]. <em>Zoologischer Anzeiger.</em> 112(11-12):322-327, figs. 1-9. (15-xii-1935). [details] Available for editors [request]
additional source Aneesh, K.S., B. Santhosh, F.M. Anzeer, V.A. Mijo, C. Unnikrishnan, K.H. Jose, A. Udayakumar & Y. Greever. (2018). Biological information and culture techniques of Dioithona sp. <em>In: Santhosh, B., M.K. Anil, F.M. Anzeer, K.S. Aneesh, V. Mijo, G.G. Abraham, R.M. George, A. Gopalakrishnan & C. Unnikrishnan (Eds.). (2018). Culture Techniques of Marine Copepods. ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala, India, St. Francis Press, Kochi. 144 pp.</em> 91-98. [details] Available for editors [request]
[request]additional source Aneesh, K.S., B. Santhosh, F.M. Anzeer, V.A. Mijo, C. Unnikrishnan, K.H. Jose, A. Udayakumar & Y. Greever. (2018). Biological information and culture techniques of Dioithona sp. <em>In: Santhosh, B., M.K. Anil, F.M. Anzeer, K.S. Aneesh, V. Mijo, G.G. Abraham, R.M. George, A. Gopalakrishnan & C. Unnikrishnan (Eds.). (2018). Culture Techniques of Marine Copepods. ICAR-Central Marine Fisheries Research Institute, Kochi, Kerala, India, St. Francis Press, Kochi. 144 pp.</em> 91-98. [details] Available for editors
[request]From editor or global species database
Taxonomic remark to raise Dioithona from subgenus to genus was based not only on the two setae on the expopod of leg 5 (original reason for the separation from Oithona), but also by the absence of pores laterally on the male prosome. These pores were first described on two coastal zone male oithonids (Ferrari, 1977) and later extended to several oceanic species (Ferrari & Bowman, 1980). Nishida (1986) described the fine structure of the cilia associated with the pores, and Uchima (1985) and Uchima & Murano (1988) proposed their function in searching for females. Pores also have been described on males of Limnoithonatetraspina (Cyclopettidae) see Abihay et al, 2007) and the planktonic males of Pachypygus gibber (Notodelphyidae) see Hipeau-Jacquotte (1984). And based on their broader distribution of male pores within Cyclopoida, absence of pores on males of the two Dioithona I studied appears to be a derived apomorphy, strengthening the taxonomic conclusion. However, pores have not been described on males of O. bjornbergae, Paroithonapacifica, Limnoithona sinensis or sedentary males of Pachypygus gibber, nor on any other species of Oithona with two setae on the exopod of leg 5. Much work on oithonids remains. [details]From regional or thematic species database
Taxonomy Vervoort (1964) believes that the creation of this genus rests on a character that is too restrictive and suggests to consider it only as a subgenus of Oithona. This opinion is followed by Wellershaus (1970) who reviews several characters in some Oithona species. Shuvalov (1980, p.86, 169) considers the genus as justified. Meanwhile, after examination of the males and on the basis of a phylogenetic analysis (Abiahy, 2000), Boxshall & Hasley (2004, p.611) restore the validity of the genus Dioithona. 4 spp. (+ 1 doubtful). [details]
