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Taxon profile

species

Chicomurex gloriosus Shikama, 1977

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Neogastropoda »  family Muricidae - Muricids »  genus Chicomurex

Scientific synonyms

Chicoreus gloriosus Shikama, 1977

Images

Chicomurex gloriosus

Author: Jan Delsing

Chicomurex gloriosus

Author: Jan Delsing

Chicomurex gloriosus

Author: Jan Delsing

Chicomurex gloriosus

Author: Avon, C.

Chicomurex gloriosus

Author: Shikama

Chicomurex gloriosus

Author: Houart et al.

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Description

Shell medium sized, thick, beautiful pinkish white and with 6 volutions of teleoconch. Protoconch small, round, light violet and with 2 volutions. Spire moderately high, with deep suture and angulated shoulder of whorl. There are running many spiral ridges which are above 5 on penultimate whorl. Varix eminent, stout, thick but spines present only on anterior portion of last whorl. Two spines along siphonal tube relatively distinct but not long. Two axial ridges between varices nodulous. Aperture suboval with thin inner and outer lips. Siphonal canal very narrow, slit-like and siphonal tube gently curved. Columella white and not broad.
Holotype: Shell 49.1 mm high and 24.5mm wide, stored in the writer's
collection, presented by NAKAYASU.
Locality: Off Cebu Island, Philippines.
Remarks: This species is near saltatrix KURODA and aculeatus LAMARCK in general outline and construction of shell but is distinct from them by absence of spines on varix shoulder and by two nodulous axial ridges between varices.
Shikama T. (1977). Descriptions of new and noteworthy Gastropoda from western Pacific and Indian Oceans.
-100~200m, By tangle net, Tinina, Balut Island, Davao Occidental, Philippines, 51.5mm., 2013/xi
Chicomurex gloriosus is a medium sized Chicomurex ranging widely across the Indo-West Pacific region ranging from Reunion and Mauritius to Indonesia to Philippines to Japan to Papua New Guinea. It has been considered a junior synonym of C. venustulus (Rehder & Wilson, 1975) and confused with that species for a long time but recently after careful comparison with C. venustulus from the Marquesas, its type locality, a number of consistent and reliable features was found to differentiate them (Houart Moe & Chen, 2015). These include C. gloriosus being much larger, not as stocky, and has longer siphonal canal as well as higher intervarical nodes. Furthermore, C. gloriosus is much less scabrous and the two differ in positions of the coloured spiral bands when they are present. Houart Moe & Chen (2015) reinstated the name C. gloriosus, and the true C. veustulus is now considered to be endemic to the Marquesas. It is a comm.on carnivorous gastropod inhabiting moderately deep water around -50~200m, and is very variable in colouration from cream to pink to red to brown. Darker coloured spiral band often present. Typical shell length around 45mm., very large specimens may reach 60mm.
Avon C. 2016 . Gastropoda Pacifica.
Shell up to 60 mm in length with small, conical protoconch of 3-3.5 whorls with narrow keel abapically and weakly shouldered, broadly convex teleoconch whorls.
Axial sculpture of last teleoconch whorl consisting of 3 broad, high, rounded, squamous, varices, each with short, webbed, weakly adapically bent spines on abapical part of varices, extending from P4, P5 and P6 and on siphonal canal from ADP, MP, and ABP. Other axial sculpture of one or two high, conspicuous, nodose intervarical ribs. Spiral sculpture of strong, narrow, high primary and narrower secondary and tertiary cords. Spiral sculpture of subsutural ramp of last whorl with adis, IP, abis, followed by P1, s1, P2, s2, P3, s3, P4, s4, P5, s5, P6, s6, and one or two tertiary cords on convex part of whorl. Other tertiary cords between primary and secondary cords. Aperture broadly ovate. Columellar lip with weak folds on its entire length, erect abapically, adherent on a small portion adapically. Outer lip crenulated, with narrow, split, elongate denticles within. Siphonal canal moderately long, narrow, narrowly open, weakly dorsally recurved, with fairly long ADP, MP, and ABP spines. ADP or ADP and MP spines strongly dorsally bent.
Pink or light orange, occasionally with a darker spiral band, usually between s2 and s4 or P5. Radula typical for Chicomurex with numerous crowded rows of teeth and a rachidian with large, broad, triangular central cusp.
Houart, R. Moe, C. Chen, C. - 2021 - Living species of the genera Chicomurex Arakawa, 1964 and Naquetia Jousseaume, 1880 (Gastropoda Muricidae) in the Indo-West Pacific.

Interchangeable taxa

Chicomurex gloriosus was first illustrated as C. venustulus by Houart (1981) then followed by Springsteen & Leobrera (1986). Houart (1992) classified C. gloriosus as subjective junior synonym.
However, after a careful comparison with new material from the Philippines (C. gloriosus) and from the Marquesas (C. venustulus) it appears that both species has some, permanent, different shell characters. C. gloriosus is larger relative to the number of teleoconch whorls, reaching 60 mm in length vs 40.6 mm for C. venustulus, it is not as stocky as C. venustulus and the siphonal canal is comparatively longer, while the intervarical nodes are generally higher, forming a stronger node on the last whorl. The coloured spiral bands, when present, also differs in being placed on different parts of the last whorl.
Houart, R. Moe, C. Chen, C. - 2021 - Living species of the genera Chicomurex Arakawa, 1964 and Naquetia Jousseaume, 1880 (Gastropoda Muricidae) in the Indo-West Pacific.

Distribution

Type locality. Off Cebu Island, Philippine Islands.
Distribution. Indo-W.Pac. (IP). Madagascar, Reunion and Mauritius and Nazareth Bank in the Indian Ocean; Philippine Islands, Vietnam, Taiwan, Papua New Guinea, North Queensland, Australia and New Caledonia in the Pacific.
Houart, R. Moe, C. Chen, C. - 2021 - Living species of the genera Chicomurex Arakawa, 1964 and Naquetia Jousseaume, 1880 (Gastropoda Muricidae) in the Indo-West Pacific.
Author: Jan Delsing

Similar species

Chicomurex excelsus Houart, Moe & C. Chen, 2017
Chicomurex globus R. Houart, C.O. Moe & C. Chen, 2015
Chicomurex venustulus Rehder & Wilson, 1975

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