Liotipoma solaris, Mclean, 2012

Mclean, James Hamilton, 2012, New species and genera of colloniids from Indo-Pacific coral reefs, with the definition of a new subfamily Liotipomatinae n. subfam. (Turbinoidea, Colloniidae), Zoosystema 34 (2), pp. 343-376 : 364

publication ID

https://doi.org/ 10.5252/z2012n2a10

persistent identifier

https://treatment.plazi.org/id/6C26A814-FF91-147A-D9D4-7C886EE2F3BB

treatment provided by

Felipe

scientific name

Liotipoma solaris
status

sp. nov.

Liotipoma solaris View in CoL n. sp.

( Figs 2E, F View FIG ; 11 View FIG ; 12 View FIG )

TYPE MATERIAL. — Holotype: LACM stn 91-188, Fiji, Diamond Seamount , E of Herald Pass, W of Ndravuni Island, inside great Astrolabe Reef , Kandavu Group, 18°45.8’S, 178°28.3’E, 20-25 m, 19.VI.1991, Twila Bratcher, from shell grit sample, ♂ shell, H 2.5, D 4.0 mm ( LACM 3107 About LACM , Fig. 11 View FIG A-D). GoogleMaps

Paratypes: same data as holotype, 2 ♂♂ shells, H 2.1, D 3.5 mm ( LACM 3108, Fig. 11 View FIG E-H). — Papua New Guinea, Horseshoe Reef, Bootless Bay, E of Port Moresby, 8°31’20”S, 147°16’32”E, 25 m, from shell grit sample, Ken Severin, 1985, 1 ♂ shell, H 2.4, D 3.9 mm ( LACM 3109, Fig. 12 View FIG A-D)

TYPE LOCALITY. — Fiji, Diamond Seamount, E of Herald Pass, W of Ndravuni Island, inside great Astrolabe Reef.

ADDITIONAL MATERIAL. — LACM stn 85-135, Fiji, Herald Pass, W of Ndravuni Island, NW end of Great Astrolabe Reef, 20 m, in coral rubble, 18.X.1985, Antonio J. Ferreira, 2 immature, including one with wedged operculum ( LACM, Fig. 2E, F View FIG ). — LACM stn 85-138, W end of Kandavu, 19°06.5’N, 177°58’E, 18 m, 27.X.1985, Antonio J. Ferreira, 1 immature ( LACM, Fig. 12 View FIG E-G).

DISTRIBUTION. — Fiji Islands and Papua New Guinea.

ETYMOLOGY. — Latin “sol”, the sun, suggested by the minimal expansion of the final whorl in this species.

DESCRIPTION

Male shell ( Figs 11 View FIG ; 12 View FIG A-D)

Whorls 3.3; profile of moderate height for genus; with single strongly projecting peripheral keel at mid-whorl; profile below keel evenly rounded. Axial sculpture of strong ribs, 21-25 on final whorl; spinose and projecting in early whorls, becoming weaker and more closely spaced in advance of final lip. Spiral sculpture of single, low cord on shoulder; base with strong subtending cord, and two cords of nearly equal strength between shoulder cord and subtending cord.Base with shallow pits on outer side of subtending cord; umbilicus bordered by broad emergent cord, overridden by narrow axial ribs; umbilicus narrow, obstructed by massive, triangular extension of inner lip; outer edge of tongue directed toward center of umbilicus, in alignment with plane of aperture.Final lip massive, extending for ⅓ of final quarter whorl, with successively decreasing layers of deposition, with strong indentations conforming to spiral sculpture, especially on basal portion.Aperture nearly radial, plane of aperture well outside of coiling axis. H 2.5, D 4.0 mm (holotype).

Female shell

Unknown.

Operculum ( Fig. 2E, F View FIG )

With deep pit in center, about 20 wavy radial ridges, with some coalescing.

REMARKS

Liotipoma solaris n. sp. is known only from male shells with a fully formed tongue. The specimen shown in Figure 12 View FIG E-G is a male shell that is nearly ready to form the tongue. It is characterised by minimal whorl expansion and a very short, triangular tongue with a pointed tip not in alignment with the plane of the aperture.

Specimens are approximately 1 mm in diameter smaller than L. mutabilis n. sp. from Lifou, Loyalty Islands. This has fewer axial ribs than the immature holotype specimen of L. clausa n. sp. ( Fig. 13 View FIG E-H), which is also known from Fiji.

LACM

Natural History Museum of Los Angeles County

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Trochida

Family

Colloniidae

Genus

Liotipoma

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF