Melanodrymia aurantiaca Hickman, 1984. Family Neomphalidae. ChEss logo OBIS species link

Melanodrymia aurantiacaMelanodrymia aurantiaca

See also Turner et al., 1985, figure 12 for protoconch SEM

Size under dissecting microscope: 260µm
Size under compound microscope: 255µm
Melanodrymia aurantiaca has a moderately large protoconch entirely covered with irregular reticulate sculpture, giving it a grainy appearance when viewed under a light microscope. The aperture is deeply sinuous and there is a broad ridge or bump at the anterior edge of the shell above the aperture.
Pump EPR 1999-2000: Frequent
Pump EPR 2004: Frequent
Trap EPR 2004-2005: Occasional

Can be confused with

Melanodrymia ?galeronae Melanodrymia aurantiaca is most likely to be confused with its congener, Melanodrymia ?galeronae. The protoconchs are very similar in size and general appearance. However, the sculpture is finer on M. ?galeronae, the aperture is less deeply sinuous and it lacks the distinct bump above the aperture, instead having a gentle curve which ends in a flare at the aperture.
Unknown Neomphalid sp. B Unknown Neomphalid sp. B – This protoconch is very similar in size and general appearance. However, instead of having a thick bump at the anterior edge, it has a narrow ridge that parallels the aperture, forming a distinct rim. The aperture is much straighter in this species and the sculpture is stronger and more regular, forming distinct rows at the anterior end of the shell.
Unknown neomphalid 290 Unknown neomphalid 290μm – This protoconch is very similar in general appearance and sculpture and may well be an undescribed Melanodrymia species. It is, however, larger (290μm against 260μm) and the aperture is more deeply sinuous, as well as flaring out at the outer edge.
Bathymargarites symplector
Bathymargarites symplector – This protoconch is similar in general appearance, but is much larger (~350μm) and lacks the overall reticulate sculpture.

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