Abstract
Psyllids (Hemiptera: Psylloidea) are small insects and belong to sucking group of insects. Palaeolindbergiella simlae (Crawford, 1912) belongs to this group and is a serious pest of Bauhinia variegate Linn. The Genus Palaeolindbergiella Heslop-Harrison, 1961 has only 3 species records from the world. Immature stages of this species are 5 which have been described with the help of coloured micro-graphs. Male and female genitalia have been described using line drawings and coloured drawings. Main diagnostic characters, brief description, morphometrics, distribution and illustrations are provided. Biology, trophic associations with 4 ant's species namely, Camponotus parius, Camponotus compressus, Tapinoma melaocephalum, Lepisiota fraunfeldi have been discussed. Four natural enemies; two species of syrphid flies namely, Allobaccha apicalis (Loew, 1858), Allobaccha sapphirina (Wiedemann, 1830), two species of Coccinellid beetles, Coccinella septempunctata (Coleoptera: Coccinellidae), Menochilus sexmaculatus (Fabricius, 1781) and Chrysoperla carnea (Stephens, 1836) (Chrysopidae: Neuroptera) were found to be the bio-control agents of P. simlae.