Lepidochitona beanii (Carpenter, 1857)
publication ID |
https://doi.org/ 10.11646/zootaxa.5296.2.2 |
publication LSID |
lsid:zoobank.org:pub:624273A6-3028-42C2-ABE2-A18BBF828156 |
DOI |
https://doi.org/10.5281/zenodo.7973139 |
persistent identifier |
https://treatment.plazi.org/id/795287BF-E458-5505-D0F1-707A71A0FD62 |
treatment provided by |
Plazi |
scientific name |
Lepidochitona beanii (Carpenter, 1857) |
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Lepidochitona beanii (Carpenter, 1857)
( Figures 3B View FIGURE 3 , 8I–O View FIGURE 8 )
Lepidopleurus beanii Carpenter, 1857: 209–229 . Chresonymy and synonymy in Ferreira (1982).
Type material. Lectotype, designated by Keen (1968), Carpenter´s Mazatlán collection, LACM tablet 905.
Type locality. Mazatlán , Sinaloa, México .
Material examined. Ten specimens, BL 4.7–8.5 mm.
Habitat. In the upper intertidal on medium–sized and small rocks, buried in sand.
Remarks. Lepidochitona beanii has a microgranular sculpture in all valves ( Figs. 8I–M View FIGURE 8 ), lateral areas delimited by a shallow depression ( Fig. 8L View FIGURE 8 ). Girdle densely covered by tiny spicules and tufts of hyaline curved spicules, bunched in groups of 3–5 located near the sutural areas of the valves ( Figs. 8I–J View FIGURE 8 ). Radula with tricuspid major lateral tooth, minor lateral tooth long and narrow, shorter than the central tooth, which is a sub–rectangular, long plate ( Figs. 8N–O View FIGURE 8 ).
Ferreira (1982) recorded specimens from Baja California (he did not specify the exact locality) with a maximum size of 11.7 mm, and with varied tegmentum colors (pink, cream, and light "salmon" color). Ferreira (1982) reported that hyaline girdle spicules are lacking in small individuals (BL 4.5 mm) and concluded that these structures develop in the last phase of the juvenile stage (this cannot be confirmed herein, see below). Kaas & Van Belle (1985a) reported that L. beanii has been collected from the intertidal to up to 230 m depth, showing a continuous distribution from southern California to Perú, including the Gulf of California. García-Ríos & Álvarez-Ruiz (2007) reported L. beanii from La Paz, Baja California Sur (BCS). There are no recent reports from the type locality, Mazatlán, Sinaloa.
We found that hyaline spicules are present even in small specimens collected at Bahía Kino (BL 3.6 mm, see Fig. 8I View FIGURE 8 ) and La Paz (BL 3.1 mm, see Fig. 8J View FIGURE 8 ). Smaller specimens also showed hyaline spicules, while larger ones showed evidence of many broken spicules. Therefore, Ferreira's (1982) hypothesis regarding the late ontogenetic development of the spicules could not be confirmed.
LACM |
Natural History Museum of Los Angeles County |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Lepidochitona beanii (Carpenter, 1857)
Reyes-Gómez, Adriana, Vargas-Ponce, Ofelia, Galván-Villa, Cristian, Salgado-Barragán, José, Esqueda-González, Ma. Del Carmen & Ríos-Jara, Eduardo 2023 |
Lepidopleurus beanii
Carpenter 1857: 209 - 229 |