Redescription and assignment of the chydorid Indialona ganapati Petkovski,1966 (Branchiopoda : Anomopoda : Aloninae) to Indialonini, new tribus

The chydorid Indialona ganapati Petkovski, 1966 is redescribed based on mat erial from the sublittoral plankton of Ajwa Reservoir, Ahmedabad, India, an d a neotype is selected. Lateral head pores are recorded, and all thoracic limbs are studied in detail. Gamogenetic specimens are described for the fi rst time. Evolutionarily relationships of Indialona and other Aloninae are discussed. A new tribe Indialonini n. trib. is proposed for the sole genus Indialona, while all other genera of Aloninae, as far as is known, compose the tribe Alonini s. str. A diagnosis of both tribes and a key for their di scrimination is proposed. Sharp differences between these tribes are found in some characters of the thoracic limbs. The limbs of the Indialonini are more oligomerized than those of the Alonini, and a strong oligomerization i s characteristic of limbs I-II.