A new fringed stargazer (Uranoscopidae: Ichthyscopus) with descriptions of the other Australian species
Gomon, M.F.; Johnson, J.W. (1999). A new fringed stargazer (Uranoscopidae: Ichthyscopus) with descriptions of the other Australian species. Mem. Queensl. Mus. 43: 597-619
In: Memoirs of the Queensland Museum. Queensland Museum: Brisbane. ISSN 0079-8835, more
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| Keywords |
Taxa > Species > New taxa > New species
Ichthyscopus nigripinnis Gomon & Johnson, 1999 [WoRMS]
Marine/Coastal |
| Authors | | Top |
- Gomon, M.F.
- Johnson, J.W.
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| Abstract |
Ichthyscopus nigripinnis sp. nov. is described from a series of specimens collected off the northeastern coast of Australia extending from northern New South Wales to eastern Papua New Guinea. The species appears most closely related to I. spinosus from northern WesternAustralia, with which it shares a highly developed subcleithral ridge and a partially separated anterior portion to the dorsal fin, but resembles I.barhatus from southern Australia more closely in coloration. The new species is distinguishable from the former by the absence of dark spots on the upper portion of the head and body and the presence of fimbriae on the horizontal fleshy ridge adjacent to the upper pectoral fin base. It is separable from the latter by its well defined, jet black anterior segment of the dorsal fin and the absence of barbels on the midline of its chin. Detailed descriptions of Australian congeners, I. barhatus, I. fasciatus, I. insperatus, I. sannio and I. spinosus, are also presented. A cladistic analysis ofthe interrelationships between Australian species of Ichthyscopus based on 1 4 variable characters supports two similar trees ofequal length. An evolutionary hypothesis is presented for Australian Ichthyscopus based on this analysis, the current distributions of species and perceptions of past climatological fluctuations. |
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