Description: Shell medium-sized, SL 25-55 mm, from narrow-fusiform to fusiform, with up to 9 prominently shouldered teleoconch whorls, and with medium-long to long (0.25 0.35 of SL), straight siphonal canal. Suture from shallowly narrowly channelled to shallowly impressed. Protoconch incomplete in studied specimens, multispiral of more than three whorls, later ones with axial riblets. Subsutural cord strong, occupying at least half width of subsutural ramp, bearing two or three, strongly unequal, spiral ridges; when three are present, central one strongest, smooth or usually crenulate, brown. Below subsutural cord, subsutural ramp form¬ing deep depression, with two to three narrow, distinct, cordlets. Peripheral cord similar in strength to subsutural one, forming prominent shoulder angle, gemmate; gemmae weakly prosocline, rarely shallowly bifid, 35-37 on last whorl. Last whorl with seven to nine major cords on base, sometimes with one smaller cordlet between major cords. Siphonal canal with more closely spaced, uniform, distinct cords. Aperture (without canal) 0.20 0.25 of SL.
Anal sinus médium broad and shallow, on peripheral cord. Ground colour from beige to light brown. Subsutural, peripheral and major cords on shell base light brown. Radula comprising about 50 transverse rows of teeth. Marginal teeth shoe-shaped. Central formation with rectangular base and short blunt central cusp.

Etymology: The genus is named after Prof. Tsugio Shuto, eminent Japanese malacologist, in recognition of his contribution to the study of Mollusca, including fossil and Recent Conoidea, and also referring to the overall similarity of the new genus to the earlier broader concept of Gemmula.

Remarks: The genus Shutogemmula includes species with shells ranging from moderately broad to relatively narrow fusiform, thus exhibiting moderate variability in shell outline. Conversely, the sculpture pattern and colouration are similar in all species. Shutogemmula is most similar to Oliveragemmula in shell outline, sculpture pattern and colouration, in particular with the two genera displaying a characteristic orange subsutural cord, and the conchological distinction between the two genera is not clear. There are, however, some differences in radular morphology: whereas in Shutogemmula the central formation is poorly pronounced with a short, blunt cusp, in Oliveragemmula, the central cusp is rather large and sharply pointed. The exon-capture analysis clearly demonstrates that despite conchological similarity, the two genera are not sister taxa.

Distribution: The genus is distributed from Taiwan and the Philippines to Papua New Guinea, with a broad bathymetric range from 35 m for Shutogemmula sp. 02 to 940 m for Shutogemmula solomonensis n. sp.