Taxonomy of family Gnathophausiidae (Crustacea: Lophogastrida)
In: Russian Journal of Marine Biology. Plenum: New York. ISSN 1063-0740; e-ISSN 1608-3377, more
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| Keywords |
Crustacea [WoRMS]; Fagegnathophausia Petryashov, 2015 [WoRMS]; Gnathophausia Willemoes-Suhm, 1873 [WoRMS]; Gnathophausiidae Udrescu, 1984 [WoRMS]; Lophogastrida [WoRMS]; Neognathophausia Petryashov, 1992 [WoRMS]
Marine/Coastal |
| Author keywords |
Taxonomy Crustacea Lophogastrida Gnathophausiidae Fagegnathophausia Gnathophausia Neognathophausia |
| Abstract |
In 1941, Fage (1941), referring to the shape of carapace, antennal scale, epimeral plates of sixth abdominal somite and structure of maxilliped, proposed three groups of species in the genus Gnathophausia, but did not give these groups taxonomical status. On the basis of new comparative morphological analysis, a valid genus is established for each group, and thus the family Gnathophausiidae now includes three genera: Fagegnathophausia gen. nov., Gnathophausia Willemoes-Suhm, 1873 and Neognathophausia Petryashov, 1992. Fagegnathophausia gen. nov. differs from the other two genera by sharply serrated median dorsal keel of carapace, presence of dorsal spiniferous ridge by the rostrum base, longer basal segment of maxillula endopod, which is three times as long as distal segment, wider oval distal segment of maxillula endopod, presence of large spatulate exopod on maxilliped, differentiated pereopodal dactyli, which are cone-shaped on pereopods 2–3 and stylet-shaped on pereopods 4–8, presence of spines on the inner margin of uropodal sympodite and crown shaped apex of telson. |
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