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species

Naquetia rhondae R. Houart & F. Jr. Lorenz, 2015

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

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Naquetia rhondae

Author: Houart et al.

Taxon in country check-lists*

Africa: Egypt, Red Sea, Asia: Israel, Saudi Arabia

* List of countries might not be complete

Description

Shell medium sized for the genus, up to 59.2 mm in length at maturity. Biconical, heavy, strongly nodose. Subsutural ramp narrow, strongly sloping, almost straight.
Spire high with 2+ protoconch whorls (Fig. 250) and teleoconch up to 6 moderately broad, convex, weakly shouldered, nodose whorls. Suture slightly adpressed. Protoconch small with broad, rounded last whorl and narrow, small, rounded first whorl; tip somewhat damaged. Terminal lip eroded. Axial sculpture of teleoconch whorls consisting of high, narrow, rounded, nodose varices and high, nodose intervarical ribs. Last whorl with 2 uneven, nodose ribs. Spiral sculpture of rounded, narrow, weakly squamous cords. Last teleoconch whorl with IP, abis, P1, s1, P2, s2, P3, s3, P4, s4, P5, P6, (s6), ADP, MP, ABP and a few additional tertiary cords and threads. Primary spiral cords approximately similar in size and strength except quite smaller P6. Secondary cords very narrow, except s3 almost as large as primary cords, forming large gap between P3 and P4. Primary cords extending on axial varices, forming very short, broadly open, webbed spines. Aperture small, ovate. Columellar lip narrow, weakly flaring, smooth, with narrow, low, parietal tooth at adapical extremity; rim partially erect, adherent at adapical extremity. Anal notch deep, broad. Outer lip erect, crenulated, with 13 or 14 weak, elongate denticles within: ID-D5 split and D6 occasionally split. Siphonal canal moderately long, broad, dorsally bent at tip, narrowly open, with 3 broad, webbed spines: ADP, MP, and ABP. Light tan with a few darker colored spots on primary spiral cords and darker spiral bands between PI-P2, P3-P4, and P5-ADP, more obvious on axial varices. Other brown spots occasionally on shoulder ramp. Aperture white.
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

Naquetia rhondae differs from the closely resembling N. cumingii in having a different morphology of the protoconch whorls and axial sculpture of the teleoconch whorls. The protoconch of N. cumingii consists of a very small, narrow, more or less shouldered or carinate first whorl and a weakly broader last whorl with a straight outline and a narrow keel abapically vs. a rounded, small, first whorl and a broad, rounded, last whorl in N rhondae .
The spiral sculpture of N. cumingii is identical to N rhondae, consisting of broad, strong, primary cords, narrow, weak, secondary cords and very small tertiary cords and threads. However, the intervarical axial sculpture differs in being shallower, consisting of 2 or 3, occasionally 4 axial ridges on penultimate and last whorls in N. cumingii vs 2 broad ridges on penultimate whorl and one broad node with an additional, lower, node in N. rhondae. The second node even becomes obsolete on the last portion of the whorl, between penultimate and the last varix. Naquetia jickelii has a stouter and broader shell, occasionally also with broad intervarical axial nodes on the last whorl, but bearing 2 or 3 ridges on penultimate whorl. It also has broader and stronger secondary spiral cords, a broader shell with a comparatively broader aperture, a lower spire and a shorter siphonal canal.
Naquetia vokesae is also a species with paucispiral protoconch consisting of 2 whorls, but with broader, more rounded whorls. The teleoconch morphology is also quite different from N. rhondae, having a higher spire, a more scabrous sculpture, narrower varices and 3 to 5, low, rounded, nodose, intervarical ridges.
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. Red Sea, Gulf of Aqaba, 50 km off Sharm el-Sheikh, 27°48' N, 33°55' E at 25-28 m.
Distribution. Indo-W. Pac. (I). North of Red Sea, From Sharm el-Sheikh to the north of Ras Banas (Egypt), living at 20 to 25 m.
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

Naquetia cumingii Adams, 1853

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