Ferrarissoaresia

GENUS FERRARISSOARESIA GRANT, 2015 STAT. NOV.

Centromochlus (Ferrarissoaresia) Grant, 2015: 3 (type species: Centromochlus meridionalis Sarmento-Soares, Cabeceira, Carvalho, Zuanon & Akama, 2013 View in CoL , by original designation and monotypy. Gender feminine). lsid: zoobank.org:act: 9F4414A7-126A-4DE0-8010- 41B11730AC6E

I n c l u d e d s p e c i e s: * Fe r r a r i s s o a r e s i a f e r r a r i s i (Birindelli, Sarmento-Soares & Lima, 2015) and Ferrarissoaresia meridionalis ( Sarmento-Soares, Cabeceira, Carvalho, Zuanon & Akama, 2013) .

Diagnosis: Ferrarissoaresia is diagnosed by 43 molecular and five morphological autapomorphies: Exclusive: (1) axillary slit absent in adults (char. 3498: 0 → 1), exclusive within Centromochlinae , convergent in Liosomadoras morrowi , Trachelyopterus lucenai , Trachelyopterus teaguei and Trachycorystes menezesi . Non-exclusive: (2) epiphyseal bar present in anterior cranial fontanel (char. 3540: 0 → 1), convergent in Centromochlus, Glanidiumcesarpintoi , Tympanopleura atronasus , Ageneiosus inermis , Auchenipterichthys longimanus , Auchenipterichthys thoracatus , Auchenipterus ambyiacus , Liosomadoras , Tocantinsia , Trachelyopterichthys , some species of Trachelyopterus and Trachycorystes menezesi ; (3) coronoid process of anguloarticular developed into a thin and conspicuous process (char. 3602: 1 → 0), convergent in clade 90 in Auchenipterini , Glanidium , Liosomadoras , some species of Tatia , Tetranematichthys, Trachelyopterina, Trachycorystina and Trachelyopterichthys ; (4) posterior bony projection on last pterygiophore of dorsal fin (char. 3680: 0 → 1), convergent in Centromochlus , Balroglanis macracanthus , Balroglanis schultzi , some species of Tatia and several auchenipterines; and (5) anterolateral and anteromedial processes of basipterygium approximately of same length (char. 3725: 1 → 0), convergent in Ageneiosini , Auchenipterini (except Entomocorus ), Glanidium , Trachycorystes menezesi , Trachelyopterus amblops and Trachelyopterus coriaceus .

Comparisons: Ferrarissoaria is distinguished from all Centromochlinae by the relatively long outer mental barbel, surpassing the pectoral-fin base (vs. outer mental barbel short, similar to the size of the inner barbel, ending much anterior to the pectoral-fin origin); from all Centromochlinae (except Gelanoglanis ) by the small eye, approximately one-third of head depth, not surpassing the mouth gap or the line of upper lip (vs. eye relatively large, occupying half of head depth or more), and except Tatia , Glanidium and Pseudotatia , by having the eye positioned dorsolaterally (vs. eye positioned laterally). Ferrarissoaresia differs from Gephyromochlus , Centromochlus , Duringlanis and Balroglanis by the eye not being visible in ventral view (vs. visible in ventral view). It is further distinguished from Centromochlus , Tatia and Gelanoglanis by having the hyomandibular and metapterygoid contacting each other (vs. not contacting each other), and from Centromochlus , Tatia (except Tatia musaica , Tatia meesi , Tatia reticulata and Tatia simplex ) and Glanidium by the lack of an anterior nuchal plate (vs. anterior nuchal plate present).

Remarks: Ferrarissoaresia , with the single species Ferrarissoaresia meridionalis , has a distinctive body shape and a splotchy colour pattern consisting of median brown speckles with darker large spots concentrated in the dorsolateral surface of body. Although Centromochlus ferrarisi was not included in the present study, it is provisionally transferred to the genus Ferrarissoaresia based on the sharing of several diagnostic characters. The lack of an anterior nuchal plate, the hyomandibular contacting the metapterygoid, the small-sized eye positioned dorsolaterally, the short body length, and the outer mental barbel elongated, characteristics not found in Tatia and Centromochlus , support the allocation in Ferrarissoaresia . In spite of that, the inclusion of Ferrarissoaresia ferrarisi in a phylogenetic context is necessary to confirm its generic position.