Neoplecostomus Eigenmann &amp; Eigenmann 1888
Creators: name: Andrade, Breno Neves
name: Langeani, Francisco
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Siluriformes
Loricariidae
Neoplecostomus

description: Key to species of <i>Neoplecostomus</i> 1a. Enlarged, fleshy folds between dentaries in all specimens, more evident in mature males..................... <i>N. doceensis</i> 1b. Absence of the enlarged fleshy folds............................. 2 2a. Lateronasal plate absent............................................... 3 2b. Lateronasal plate present, between nare and infraorbital 2 or posteriorly........................................................... 10 3a. Adipose fin absent or poorly developed....................... 4 3b. Adipose fin present and well developed....................... 5 4a. Conspicuous dark spots all over the body; head depth 55.6-63.9% of head length........................... <i>N. botucatu</i> 4b. Conspicuous dark spots all over the body absent; head depth 44.4-55.4% of head length............. <i>N. paranensis</i> 5a. Moderate keels along each plate of lateral series, more evident in mature males; first plates in the mid-ventral series shorter than the area between them.................................................................................. <i>N. bandeirante</i> 5b. Characters above absent............................................... 6 6a. Mature males with enlarged odontodes and distinct swollen skin along lateral margins of snout................. 7 6b. Mature males without enlarged odontodes and distinct swollen skin along lateral margins of snout................. 8 7a. Ridge of swollen skin and enlarged odontodes in front of eyes in mature males; 17-24 teeth in premaxilla and 15-24 teeth in dentary..................................... <i>N. selenae</i> 7b. Ridge of swollen skin and enlarged odontodes in front of eyes in mature males absent; 10-15 teeth in premaxilla and 8-12 teeth in dentary.................................... <i>N. yapo</i> 8a. Azygous preadipose plate present; cleithral width 19-23% of standard length; 5-13 teeth in dentary............ <i>N. microps</i> 8b. Azygous preadipose plate absent; cleithral width 25-30% of standard length; 10-39 teeth in dentary.................... 9 9a. Orbital diameter 8.3-11.4% of head length; 7-9 plates between the adipose fin and caudal fin......... <i>N. langeanii</i> 9b. Orbital diameter 12.2-13.0% of head length; 4-6 plates between the adipose fin and caudal fin........ <i>N. corumba</i> 10a. Spinelet absent or weakly developed, usually narrower than dorsal-fin unbranched thick ray; canal plate divided in three smaller plates................................ <i>N. ribeirensis</i> 10b. Spinelet present and always wider than dorsal-fin unbranched thick ray; canal plate simple, not divided......11 11a. Lateral-line plates 34-43; 10-13 plates between the adipose fin and caudal fin............................ <i>N. granosus</i> 11b. Lateral-line plates 27-33; 4-9 plates between the adipose fin and caudal fin........................................................ 12 12a. Head length 26.2-26.8% of SL; head width 96.7-97.0% of head length............................................ <i>N. variipictus</i> 12b. Head length 28.0-34.5 of SL; head width 77.0-92.0% of head length................................................................. 13 13a. Thoracic length 10.0-13.0% of SL...... <i>N. franciscoensis</i> 13b. Thoracic length 13.2-17.6% of SL........................... 14 14a. Premaxillary and dentary teeth more numerous in females than males, respectively 30-39 (<i>vs.</i> 14-20) and 30-38 (<i>vs.</i> 13-18); cleithral width 25.2-28.7% of SL; orbital diameter 9.5-11.4% of length of the head........................ <i>N. jaguari</i> 14b. Premaxillary and dentary teeth number equivalent for males and females, respectively 15-35 and 19-38; cleithral width 19-21% of SL; orbital diameter 6-9% of head length............................. <i>N. espiritosantensis</i>
description: Published as part of <i>Andrade, Breno Neves &amp; Langeani, Francisco, 2014, A new species of Neoplecostomus Eigenmann &amp; Eigenmann, 1888 (Siluriformes: Loricariidae: Neoplecostominae) from the upper rio Paraná basin, pp. 675-681 in Neotropical Ichthyology (Neotrop. Ichthyol.) (Neotrop. Ichthyol.) 12 (4)</i> on pages 675-681, DOI: 10.1590/1982-0224-20130195, http://zenodo.org/record/4551229