Drymaeus costatus Breure & Vega-Luz, 2021

CLASSE: GASTROPODA: TERRESTRE

FAMÍLIA: BULIMULIDAE

ESPÉCIE: Drymaeus costatus Breure & Vega-Luz, 2021

Tamanho médio: 43 – 45 mm

Habitat: Vive em árvores e arbustos

Ocorrência: Peru, Departamento Amazonas

Localidade tipo: Peru, Departamento Amazonas, Província de Chachapoyas, Distrito de Omia

Altitude: 1800–1900 m

Nome original: Drymaeus (Drymaeus) costatus Breure & Vega-Luz, 2021

Etimologia: O nome da espécie “costatus”, tem origiem no Latim, e significa “com costelas”, uma referência às estrias rasas na superfície da última volta

Zoobank: http://zoobank.org/NomenclaturalActs/83BD29C4-113C-4D82-8039-C698385EC413

Descrição original:

(Breure & Vega-Luz, 2021): “shell up to 45.0 mm height, 1.78 times as long as wide, rimate, the spire with almost straight sides, rather thin. Colour roseate to yellowish, dotted with irregular dark reddish-brown blotches, partly arranged in an axial pattern, with axially arranged whitish lines evenly spaced, mostly noticeable on the last whorl. Upper whorls pink to yellowish. Surface dull to rather shiny when fresh or collected alive; the upper whorls with indistinct growth lines, becoming stronger towards the last whorl, which is covered by shallow axial riblets and with some indistinct, interrupted spiral grooves. Protoconch with a reticulate sculpture of riblets and spiral striae, which are of equal strength and form a grating pattern. Whorls 5.5, nearly flat except the last whorl which is rather swollen, last whorl 0.83 times the total shell height; suture slightly impressed, somewhat ascending behind the lip. Aperture elongate-ovate, 1.9 times longer than wide, 0.65 times the total height. Peristome expanded and reflected, somewhat sinuate above, white. Columellar margin curved, reflected, white. Parietal wall with a very thin, whitish callus.”

Fotos: (1) cortesia Carles Dorado (Espanha); (2) Breure & Vega-Luz, 2021: variações de cor e formato na série tipo; (3) idem, animais vivos

Figura: Breure et al, 2024: Drymaeus costatus Breure & Vega-Luz, 2020: (A) HOLOTYPE MNCN 15.05/200126; (B) animal vivo, TOPOTYPE (crédito: Valentín Mogollón Ávila)

Fontes:

Descrição original: (como Drymaeus (Drymaeus) costatus Breure & Vega-Luz, 2021) Breure, A. S. H. & Vega-Luz, R. (2021). Additionnal new Drymaeus species from northern Peru (Mollusca, Gastropoda, Bulimulidae). Folia Conchyliologica. 60: 19-24.
página(s): 19, figs 1-4

Breure et al, 2024:  Struggling with shells: Drymaeus Albers, 1850 and Mesembrinus Albers, 1850 species (Mollusca, Gastropoda, Bulimulidae) from Peru—an illustrated checklist and descriptions of new species. Journal of Conchology 45 (2), 2024. disponível online em https://conchsoc.org/jconch-45-2

MolluscaBase: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1486247