Singh, S.; Singh, K. P. Description of Two New Species of Psyllaephagus Ashmead (Hymenoptera: Encyrtidae) Parasitizing Phacopteron Lentiginosum Buckton (Hemiptera: Psyllidae), a Leaf Gall-Former of Garuga Pinnata Roxburgh (Burseraceae). Zootaxa 2011, 2885, 33–43.