Revision of Dadagulella gen. nov., the “ Gulella radius group ” (Gastropoda: Streptaxidae) of the eastern Afrotropics, including six new species and three new subspecies Author Rowson, Ben 05D46259-DA45-45A4-9127-5AF361D566A7 Biodiversity & Systematic Biology, National Museum of Wales, Cathays Park, Cardiff, UK CF 10 3 NP. ben.rowson@museumwales.ac.uk Author Tattersfield, Peter 8C55642E-B18A-461B-9BF9-31CB6DB7A070 Biodiversity & Systematic Biology, National Museum of Wales, Cathays Park, Cardiff, UK CF 10 3 NP. text European Journal of Taxonomy 2013 2013-02-04 37 37 1 46 journal article 10.5852/ejt.2013.37 9682b45b-5e22-4965-a293-e203660e0ed3 2118-9773 3806770 ADF6394E-77B5-4309-87FE-4097FDE0A3FD Dadagulella meredithae (van Bruggen, 2000 ) comb. nov. Figs 37 , 84 ; Table 1 Gulella meredithae van Bruggen, 2000: 226-232 , figs 1-7. “…an as yet unidentified species from Malawi ” – van Bruggen & Meredith 1984 : 165 . Gulella meredithae – 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 . Other material examined None. Description SHELL ( Fig. 37 ). 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) .