Dicharax (?) crispatus (Godwin-Austen, 1871)
publication ID |
https://dx.doi.org/10.3897/zookeys.981.53583 |
publication LSID |
lsid:zoobank.org:pub:5194AAC8-6B8A-473F-8A41-470A60182A0B |
persistent identifier |
https://treatment.plazi.org/id/F39A5CAB-EAD3-59E0-A7BB-9CABD571E526 |
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scientific name |
Dicharax (?) crispatus (Godwin-Austen, 1871) |
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Dicharax (?) crispatus (Godwin-Austen, 1871)
Alycaeus crispatus Godwin-Austen, 1871: 91-92, pl. 4, fig. 1.
Alycaeus crispatus - Godwin-Austen 1875: 8, pl. 4, fig. 3.
Alycaeus (Dicharax) crispatus - Kobelt 1902: 367; Gude 1921: 242-243.
Alycaeus crispatus - Godwin-Austen 1914: 371-372, pl. 145, figs 1, 1a, 1b; Godwin-Austen 1914: 389.
Chamalycaeus (Dicharax) crispatus - Ramakrishna et al. 2010: 58; Tripathy et al. 2018: 789.
Type locality.
"Khasia, Jiantia and N. Cachar Hills".
Material examined.
Shibak, Habiang Garo Hills, NHMUK 1903.7.1.2635 (5 syntypes); Same container (probably same locality), NHMUK 1903.7.1.2759 (11 syntypes).
Godwin-Austen (1914: 372) explained that the Alycaeus crispatus variety from north Cachar in his previous paper ( Godwin-Austen 1871: 93) was renamed A. asaluensis . The originally figured sample ( Godwin-Austen 1871: pl. 4, fig. 1) is from Shibak, Gabir valley (Godwin-Austen, 1914: 372).
Remarks.
Protoconch moderately elevated, matte, no spiral lines visible; R1 rather regularly ribbed, also without spiral lines; R2 relatively short, with regular, widely spaced, sharp ribs.
The placement of the species in the genus Dicharax is based on the absence of spiral striation on the entire shell; however, the sharp R2 ribs are characteristic of the genus Chamalycaeus . The shape of protoconch shows some variation within species. Namely, typical crispatus and typical cristatus minimus shells have only slightly elevated protoconchs, whereas it is characteristically Chamalycaeus -like (strongly elevated) in D. crispatus makarsae specimens.
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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Dicharax (?) crispatus (Godwin-Austen, 1871)
Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D. 2020 |
Alycaeus crispatus
Godwin-Austen 1871 |
Alycaeus crispatus
Godwin-Austen 1871 |
Alycaeus (Dicharax) crispatus
Godwin-Austen 1871 |
Alycaeus crispatus
Godwin-Austen 1871 |