Protoconch SEM Fig. 3 Mullineaux et al. (1996)
Larval photograph in Desbruyères et al. (2006) p. 115
|Size under dissecting microscope: 220µm
Size under compound microscope: 215, 220µm
Lirapex has an unusual type of sculpture consisting of the lineate sculpture typical of peltospirids with numerous tubercles between them, especially near the axis of coiling. Both fade out about halfway to the aperture. When viewed from the bottom under the light microscope, a thick bar running across the shell is visible just posterior to the aperture. The aperture is nearly straight, with a wide rim tapering toward the posterior. The shell is transparent and glassy-looking.
The species was described from 21°N and has been reported from 9°N, though adults are rarely collected there.
Pump EPR 1999-2000: Occasional
Pump EPR 2004: Occasional
Trap EPR 2004-2005: Occasional
Lirapex is similar in size to Peltospira spp. However, Peltospira is more streamlined in appearance and doesn't have tubercles or the bar posterior to the aperture.
Echinopelta fistulosa is similar in size to Lirapex; however, it is about 10µm smaller, more angular in appearance, has a raised platform at the base and no tubercles.
|Unknown peltospirid 240µm closely resembles Lirapex in general morphology, but does not have tubercles and is slightly larger. See notes on peltospirids.|
Gastropods by Size
Gastropods by Species