Comprehensive Description

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Myersglanis Hora & Silas, 1952 ZBK

Fig. 22

Myersglanis Hora & Silas, 1952b ZBK : 19. (Type species: Exostoma blythii Day, 1869 ZBK , by original designation). Gender masculine.

Diagnosis (based, in part, on Vishwanath & Kosygin 1999): Continuous post-labial groove; gill openings not extending onto venter; homodont dentition; pointed teeth in both jaws; tooth patches in upper jaw joined and not produced posteriorly at the sides; 10 or 16-19 branched pectoral rays.

Myersglanis ZBK is distinguished from Glyptosternon ZBK , Glaridoglanis ZBK , Euchiloglanis ZBK , Pareuchiloglanis ZBK and Parachiloglanis ZBK by having a continuous post-labial groove (Table 5). Myersglanis ZBK is distinguished from Exostoma ZBK and Pseudexostoma ZBK by having tooth patches joined (vs. separated) in the upper jaw. It is further distinguished from Exostoma ZBK by having pointed teeth in both jaws (vs. teeth oar-shaped, flatted distally). Myersglanis ZBK is distinguished from Oreoglanis ZBK and Pseudexostoma ZBK by having homodont dentition in the upper and lower jaws (vs. heterodont dentition in the lower jaw in Oreoglanis ZBK and heterodont dentition in the upper and lower jaws in Pseudexostoma ZBK ).

FIGURE 22. Myserglanis jayarami , MUMF 2138, holotype, 82.0 mm SL. Photograph by W. Vishwanath.

Description: 7 dorsal rays; 10 or 16-19 branched pectoral-fin rays; 6 pelvic-fin rays; 8 anal-fin rays. Head depressed; body elongate, depressed anteriorly. Eyes minute, dorsal, subcutaneous. Lips thick, fleshy, papillated. Teeth pointed; tooth patches in upper jaw joined, ovoid-shaped; that in lower jaw divided medially, pointed posteriorly at sides. Maxillary barbel with well-developed membrane, soft base, and striated pad of adhesive skin. Gill openings narrow, not extending below pectoral-fin base. Branchiostegal membranes confluent with isthmus. Coracoid process not externally visible. No thoracic adhesive apparatus. Paired fins plaited to form an adhesive apparatus.

Distribution: Ganges and Irrawaddy drainages, India and Nepal (Vishwanath & Kosygin, 1999).

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