Dadagulella meredithae (van Bruggen, 2000 ) Rowson & Tattersfield, 2013
publication ID |
https://doi.org/ 10.5852/ejt.2013.37 |
publication LSID |
lsid:zoobank.org:pub:ADF6394E-77B5-4309-87FE-4097FDE0A3FD |
DOI |
https://doi.org/10.5281/zenodo.3815781 |
persistent identifier |
https://treatment.plazi.org/id/4511E41D-D83D-FFDD-FE63-FBB7F6E2FD5C |
treatment provided by |
Carolina |
scientific name |
Dadagulella meredithae (van Bruggen, 2000 ) |
status |
comb. nov. |
Dadagulella meredithae (van Bruggen, 2000) View in CoL comb. nov.
Figs 37 View Figs 36-40 , 84 View Fig ; Table 1 View Table 1
Gulella meredithae van Bruggen, 2000: 226-232 View in CoL , figs 1-7.
“…an as yet unidentified species from Malawi ” – van Bruggen & Meredith 1984: 165.
Gulella meredithae View in CoL – Rowson & Lange 2007: 31.
Type material examined
MALAWI: holotype RMNH.59399 : 1 ad., Nyika National Park (approx. 10.6°S, 33.8°E), Rumphi District, Juniper Forest , approx. 2100 m alt., leg. H.M. Meredith, 16 Sep. 1983. GoogleMaps
Other material examined
None.
Description
SHELL ( Fig. 37 View Figs 36-40 ). Small (2.30 - 3.10 mm high x 1.40 - 1.60 mm wide), of 5.5 - “<6” whorls. Ovate-acuminate, although spire (spire angle 58 - 77°) less acuminate than in other Dadagulella gen. nov species. Apex rounded (in holotype) to weakly pointed. Embryonic whorls smoothly granulate. Later whorls with very fine, very numerous ribs (about 27 per mm on penultimate whorl). Sutures of intermediate depth. Umbilicus closed or nearly so. Peristome incomplete parietally. Outer palatal surface of aperture with a depression corresponding to the palatal tooth. Dentition 3-fold to 4-fold, consisting of at least: one lamella-like parietal tooth; one slab-like palatal tooth, not forming a parieto-palatal sinus; and a mammillate columellar baffle. Additional teeth limited to a shallow, weak columellar swelling. Juvenile shells with 2-fold to 3-fold dentition: one parietal tooth; one columellar tooth; and usually one basal tooth (termed labral by van Bruggen 2000). Van Bruggen (2000) showed that earlier sets of dentition are visible through the shells of some transparent juveniles, even in the preceding whorls, suggesting slow or no resorbtion. Anatomy unknown.
Range and habitat
Montane forest (above 1500 m to around 2450 m) in northern and central Malawi, and adjacent part of Zambia (Chowo Forest). Van Bruggen (2000) suspected it to range into parts of Tanzania adjoining northern Malawi.
Remarks
This species is distinctive in its small size, very fine, numerous ribs, and dentition. It differs from D. radius comb. nov. s.l. and D. browni comb. nov. s.l. in the lack of a basal tooth or denticle. The apex is rounded in the holotype but more conical in paratypes figured by van Bruggen (2000).
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.
Kingdom |
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Phylum |
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Class |
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Order |
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Family |
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Genus |
Dadagulella meredithae (van Bruggen, 2000 )
Rowson, Ben & Tattersfield, Peter 2013 |
Gulella meredithae
Rowson B. & Lange C. N. 2007: 31 |
Bruggen & Meredith 1984: 165 |
Gulella meredithae van Bruggen, 2000: 226-232
Bruggen A. C. van 2000: 232 |