Leptotocinclus, Delapieve & A. & Reis, 2017

Delapieve, Maria Laura S., A., Pablo Lehmann & Reis, Roberto E., 2017, An appraisal of the phylogenetic relationships of Hypoptopomatini cascudinhos with description of two new genera and three new species (Siluriformes: Loricariidae), Neotropical Ichthyology 15 (4), No. e 170079, pp. 1-38 : 24

Leptotocinclus , new genus

urn:lsid:zoobank.org:act:BE04E60D-92F2-43CC-AE8D-75CD1449D314

Type-species. Leptotocinclus ctenistus .

Included species. Leptotocinclus madeirae , new species and Leptotocinclus ctenistus , new species.

Diagnosis. Leptotocinclus is diagnosed as monophyletic based on three non-exclusive synapomorphies: 12 caudalfin branched rays (char. 50.1); second and third radials of pectoral fin sutured along their longest axis (char. 54.1); and odontodes on dorsal margin of snout equal in size and arrangement compared to those on remainder of head (char. 91.0).

Comparisons. Leptotocinclus can be readily distinguished from Nannoptopoma by the trunk, which is concave from posteriormost dorsal- and anal-fin rays to caudal fin (vs. a straight trunk); having a smaller and more delicate pectoralfin spine, representing 23–27% SL (vs. 29.8–39.3% SL), and the posterior process of the coracoid is far from the lateropterygium ( Fig. 8a; vs. posterior process of the coracoid and anterior tip of lateropterygium in contact or almost in contact; Fig. 8b).

Etymology. Leptotocinclus is from the Greek leptos, meaning fine, small, delicate, and Otocinclus , a genus of Hypoptopomatini , in reference to the delicate aspect of the species included.

Gender. Masculine.