Microtrypetes Pilsbry & Lowe, 1932

Fedosov, Alexander E, Malcolm, Gavin, Terryn, Yves, Gorson, Juliette, Modica, Maria Vittoria, Holford, Mandë & Puillandre, Nicolas, 2019, Phylogenetic classification of the family Terebridae (Neogastropoda: Conoidea), Journal of Molluscan Studies The Malacological Society of London 85 (4), pp. 359-388 : 22-23

Genus Microtrypetes Pilsbry & Lowe, 1932

( Fig. 10F )

Type species: Microtrypetes iola Pilsbry & Lowe, 1932 ; OD.

Diagnosis: Shell small (<20 mm), dull, with turreted outline due to subcylindrical to clearly cylindrical whorl outline. Sculpture of strong, straight to finely curving axial ribs and fine spiral striae. Subsutural band indistinct or weakly defined. Siphonal canal long, curved.

Distribution: E Pacific.

Remarks: The genus can be differentiated from other New World genera of Terebridae by the stepped appearance of the spire, due to the cylindrical or subcylindrical whorl outline, by the generally indistinct subsutural band and by the siphonal canal that is rather long for the family.

Included species:

Microtrypetes iola Pilsbry & Lowe, 19324 ;

M. polypenus (Pilsbry & Lowe, 1932) 4 n. comb.

Descriptionsof newspecies

Figures

Figure 10. Genera defined solely by shell morphology. A. Terebra bathyrhaphe lectotype, NHMUK 1873.8.6.10/1, Gulf of Yedo, 35◦35'N, 139◦48'E, 6–25 fms (= 11–46 m), 24.8 mm. B. Hastulopsis melanachme lectotype, NMHUK 1873.8.6.11/1, Cape Sima, Japan, 18 fms (= 33 m), 17.8 mm. C. Terebra bifrons holotype, NHMUK 1968237, Japan, 51.0 mm. D. Gradaterebra scalariformis, SAM D-110176, Newland Head, S Australia, 20 fms (= 37 m), 12.1 mm. E. Terebra circumcincta holotype, NHMUK 1978150, Red Sea (erroneous?), 38.0 mm. F. Microtrypetes iola holotype, ANSP 155289, Mazatlan, Mexico, 20 fms (= 37 m), 14.0 mm.