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Conorhynchos conirostris (Valenciennes, 1840)
The Conorhynchos conundrum:
investigating the phylogenetic position of
an enigmatic neotropical catfish
(Siluriformes, incertae sedis).
Flávio A. Bockmann
Mário C. C. de Pinna
John G. Lundberg
Carl J. Ferraris Jr.
(FAB) Laboratório de Ictiologia de Ribeirão Preto, Dept. Biologia, FFCLRP - Universidade de
São Paulo, Av. Bandeirantes 3900, 14040-901, Ribeirão Preto, SP, Brazil
(MCCP) Museu de Zoologia da Universidade de São Paulo, Av. Nazaré 481, São Paulo, SP,
04263-000, Brazil
(JGL) Department of Ichthyology, Academy of Natural Sciences, 1900 Benjamin Franklin
Parkway, Philadelphia, PA, 19103, USA
(CJF) 2944 NE Couch Street, Portland, OR, 97232, USA
Conorhynchos conirostris (Valenciennes, 1840)
São Francisco River
Paraguassu
River
Conorhynchos glaber Steindachner, 1877
São Francisco River
Paraguassu
River
Porto Seguro
(Buranhaém
River)
Pimelodidae: Bergiaria platana
Autopalatine articulation
Pimelodidae: Pimelodus ornatus
Conorhynchos conirostris
• Fotos de vagabundagem
Auchenoglanididae:
Auchenoglanis occidentalis
Ariidae: Arius seemanni
Claroteidae:
Chrysichthys sp.
Pangasiidae: Pangasius sp.
Conorhynchos conirostris
1) Presence of an accessory supraneural.
Conorhynchos conirostris
Auchenipteridae:
Pseudauchenipterus nodosus
Doradidae: Platydoras sp.
1) Presence of an accessory supraneural.
Doradidae: Oxydoras sp.
Auchenipteridae:
Ageneiosus sp.
Conorhynchos conirostris
2) Presence of an epioccipital process.
Doradidae: Doras sp.
2) Presence of an epioccipital process.
3) Presence of a single and large foramen for the exit of the
glossopharyngeal and vagus nerves.
Conorhynchos conirostris
Doradidae: Oxydoras sp.
4) Presence of the Müllerian ramus.
Conorhynchos conirostris
Doradidae: Oxydoras sp.
5) Transformator process of tripus abruptly
mesially-oriented.
Conorhynchos conirostris
Doradidae: Doras sp.
6) Nuchal plate 3 laterally expanded.
Conorhynchos conirostris
Doradidae: Doras sp.
7) Mesocoracoid vestigial or absent.
Conorhynchos conirostris
Autapomorphies for Conorhynchos.
1) Parasphenoid and pterosphenoid largely separated from each other.
Autapomorphies for Conorhynchos.
2) Deep fossa for dilatator operculi muscle.
Autapomorphies for Conorhynchos.
3) Presence of the pharyngobranchial 2.
ACKNOWLEDGEMENTS
-National Science Foundation – “All Catfish Species Inventory” Project
(NSF DEB 0315963 ).
- CNPq;
- FAPESP;
- Aléssio Datovo and Alexandre C. Ribeiro for helping with the images.