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species

Cerithiopsis michellegalli Cecalupo & Perugia, 2020

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  family Cerithiopsidae »  genus Cerithiopsis

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Cerithiopsis michellegalli

Author: Cecalupo A. & Perugia I.

Taxon in country check-lists*

North America: Guadeloupe, Martinique, South America: Caribbean

* List of countries might not be complete

TYPE MATERIAL Holotype (MNHN-IM-2000-34844) dim. 2.05 x 0.75 mm. Protoconch 0.45 × 0.25 mm. stn AB197. Paratype 1 (MNHN-IM-2000-34845) dim 2.10 x 0.85 mm. Protoconch 0.40 x 0.24 mm. stn GS17. Paratype 2 (MNHN-IM-2000-34846) dim 1.95 x 0.75 mm. Protoconch 0.47 × 0.25 mm. stn AB562. Paratype 3 (MNHN-IM-2000-34847) dim 2.07 × 0.70 mm. Protoconch 0.45 × 0.25 mm. stn GB16. Paratype 4 (MNHN-IM-2000-34848) dim. 1.85 x 0.70 mm. Protoconch 0.41 × 0.25 mm. stn GB24. Paratype 5 (MNHN-IM-2000-34849) dim. 2.12 × 0.82 mm. Protoconch 0.41 × 0.25 mm. stn AB058.
TYPE LOCALITY Caribbean: French Martinique, Presqu'île de la Caravelle, Rocher de la Caravelle, 23-25 m.
DISTRIBUTION Guadeloupe, Martinique.
DESCRIPTION Shell small, oval with impressed sutures, back- ground color white with 1st spiral cord light orange. Protoconch conical of about 4.5 whorls, last 2 more convex; seen under ESEM there is a thin spiral cord above the sutures and a very narrow band of axial riblets immediately below. Teleoconch of 4.5 whorls with reticulate sculpture of 3 equal spiral cords crossed by weaker axial ribs, 18 on last whorl; beads at each intersection. A fourth cord is emerging at the base of the last whorl from the insertion of the outer lip; border between columella and base highlighted by a weaker cord. Columella short and broad, obliquely truncated, with a surface crossed by thin crisp threads, columellar callus bordering an oval aperture; anal sulcus and siphonal canal well defined.
COMPARISON For similar color and size Cerithiopsis michellegalli n. sp. is compared with: Cerithiopsis io Dall & Bartsch, 1911 which differs having less impressed sutures, a red brown upper spiral and a completely smooth protoconch; Cerithiopsis vicola, Cerithiopsis pesa both Dall & Bartsch, 1911 and Cerithiopsis iontha Barsch, 1911 have a protoconch of only 2-2.5 whorls.
ETYMOLOGY Named after Michel Le Gall, formerly chief engineer on French research vessels and now, being retired, the "MacGyver" of the MNHN coastal expeditions: pilot, electrician and handyman.
Cecalupo A. & Perugia I. (2020). Report on the Cerithiopsidae from Guadeloupe, Martinique and French Guiana (Caenogastropoda, Triphoroidea).
Author: Jan Delsing

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