Graptacme semistriolata (Guilding, 1834)

Caetano, Carlos Henrique Soares, Scarabino, Victor & Absalão, Ricardo Silva, 2006, Scaphopoda (Mollusca) from the Brazilian continental shelf and upper slope (13 º to 21 ºS) with descriptions of two new species of the genus Cadulus Philippi, 1844, Zootaxa 1267, pp. 1-47 : 22-24

publication ID	11755326
publication LSID	lsid:zoobank.org:pub:DD06702D-A18D-4323-9CAE-D8F315FCCCC7
persistent identifier	https://treatment.plazi.org/id/CC6E8784-FFEF-FFAF-FF54-FDF8F985D499
treatment provided by	Plazi (2016-04-04 11:54:41, last updated 2016-04-04 11:54:46)
scientific name	Graptacme semistriolata (Guilding, 1834)
status

Treatment

Figs. 46–47

+ Dentalium semistriolatum Guilding 1834: 34 , pl. 3, figs. 1–5.

+ Dentalium (Graptacme) semistriolatum: Henderson 1920: 69 , pl. 11, figs. 1–3, 8, 9; Maury 1922: 37; Turner 1955: 313; Warmke and Abbott 1961: 224, fig. 34 a; Abbott 1974: 386; PennaNeme 1974: 111.

+ Graptacme semistriolatum: Scarabino 1985: 199 , pl. 72, fig. 1019; 1994: 307, pl. 106, fig. 1507; Cabral and Mello 1994: 38, fig. 10; Díaz and Puyana 1994: 256, pl. 71, fig. 1042.

+ Graptacme semistriolata: Redfern 2001: 190 , pl. 76, figs. 781 a, 781 b.

Type material

not located.

Type locality

"in arenosis Oceani Caribaei" (by original designation).

Diagnosis

Shell medium (to 46 mm), rapidly tapering, well curved. Translucent, brilliant, salmon tint at apex, alternating opaque bands throughout. Numerous longitudinal striae at apex; remainder smooth. Long, narrow, irregular slit at apex usually placed laterally. Section circular throughout.

Material examined

IBUFRJ 14249, sta 42, 5 lv, 9 dd; IBUFRJ 14247, sta 49, 1 lv, 2 dd.

Distribution

USA: Bermuda and Florida; Caribbean Sea: off St. Martin; Cuba (Henderson 1920); Bahamas (Redfern 2001); Virgin Islands (Turner 1955); Progreso, Southern Mexico ( Baker 1891); Brazil: Amapá to São Paulo (PennaNeme 1974; Scarabino 1975, 1985, 1994). Living 20 to 75 (PennaNeme 1974) and in unknown condition down to 150 m.

Remarks

Steiner and Kabat (2004) considered G. semistriolata as a junior synonym of G. semistriata (Turton, 1819) , from tropical East Pacific waters. According to these authors, this pattern of distribution could suggest the existence of sibling species. We prefer to maintain both species as valid until further taxonomic and/or molecular studies better resolve their status.