Ayarnangra Roberts, 2001 Ayarnangra estuarius Roberts, 2001 Genera of the Asian Catfish Families Sisoridae and Erethistidae (Teleostei: Siluriformes). Alfred W. Thomson Lawrence M. Page Zootaxa 2006 1345 1 96 62FGR 385279 urn:lsid:zoobank.org:act:8A316B41-E52D-4596-8F18-ED1F5764A35F Actinopterygii Erethistidae Ayarnangra Animalia Ayarnangra Roberts 2001:83 Siluriformes 8 Chordata genus  Fig. 2   Ayarnangra Roberts, 2001: 83. (Type species: Ayarnangra estuarius Roberts, 2001, by original designation). Gender masculine.  Diagnosis: No thoracic adhesive apparatus; granulate anterior margin on pectoral spine; slender body shape; smooth to granulate anterior margin on dorsal spine; papillate upper lip; moderate gill openings; 13-16 anal rays.  Ayarnangrais distinguished from all other erethistid genera by having 13-16 anal fin rays (vs. 8-12) and a granulate (vs. serrated) anterior margin on the pectoral spine. It is further distinguished from Conta, Pseudolaguviaand Caelatoglanisby the absence of a thoracic adhesive apparatus, from Caelatoglanisby having a papillate (vs. plicate) upper lip, from Caelatoglanisand Erethistesby having a more slender body (Fig. 2), from Caelatoglanisand Pseudolaguviaby having moderate gill openings (vs. wide, nearly meeting one another on the venter), and from Contaby having a granulate (vs. serrated) anterior margin on the dorsal spine and moderate gill openings (vs. extremely narrow gill openings not extending onto venter).   FIGURE 2. Ayarnangra estuarius, UF 148530, 38.6 mm SL.   TABLE2. External traits diagnostic for genera of Erethistidae      Conta  Pseudolaguvia  Caelatoglanis  Adhesive apparatus on thorax Long; extends nearly to pelvic fin base Short; not reaching nearly to pelvic fin base; with median depression Short; not reaching nearly to pelvic fin base; without median depression  Gill openings Extremely narrow; restricted to pectoral fin base Wide; nearly meet one another on venter Wide; nearly meet one another on venter  Anterior margin of pectoral spine Serrations all directed toward tip of spine Serrations all directed toward tip of spine Serrations all directed toward tip of spine  Anterior margin of dorsal spine Serrated Smooth to granulate Smooth to granulate  Body shape Elongate (Fig. 4) Elongate (Fig. 8) Moderately elongate (Fig. 3)  Upper Lip Papillate Papillate Plicate  Anal fin rays 9-10 8-10 8-10  continued.     Erethistes  Erethistoides  Ayarnangra  Adhesive apparatus on thorax Absent Absent Absent  Gill openings Moderate; extend onto venter Moderate; extend onto venter Moderate; extend onto venter  Anterior margin of pectoral spine Serrations point toward tip, arranged in divergent pairs, or outwardly directed and not divergent (Fig. 6a & b) Serrations directed toward tip of spine distally and away proximally (Fig. 6c) Granulate  Anterior margin of dorsal spine Smooth to granulate Smooth to granulate Smooth to granulate  Body shape Robust (Fig. 5) Elongate (Fig. 7) Elongate (Fig. 2)  Upper Lip Papillate Papillate Papillate  Anal fin rays 8-12 9-11 13-16  Remarks: Roberts (2001) diagnosed Ayarnangraas a genus of Sisoridae.  Description: Dorsal fin with 1 spine, 6 rays; pectoral fin with 1 spine, 5-6 rays; 6 pelvic-fin rays, 13-16 anal-fin rays, first 7-8 rays simple; 16 principal caudal rays. Body elongate. Eyes very small, nostrils huge, much larger than eye. Palatal teeth absent. Maxillary barbel with well-developed membrane, soft base; extending slightly beyond pectoral-finspine origin. Bases of outer and inner mental barbels nearly parallel. Gill openings moderate; branchiostegal membranes broadly fused to isthmus. Pectoral girdle with large coracoid process externally visible. Pectoral-fin spine with finely granulated anterior edge, serrated posterior edge. Dorsal spine granulated anteriorly, with small serrations posteriorly. No thoracic adhesive apparatus. Paired fins non-plaited.  Distribution: Irrawaddy River drainage, Myanmar (Roberts, 2001).