A remarkable new species of Paraparatrechina Donisthorpe (1947) (Hymenoptera, Formicidae, Formicinae) from the Eastern Himalayas, India.

A new ant species, Paraparatrechinaneela sp. nov., with a captivating metallic-blue color is described based on the worker caste from the East Siang district of Arunachal Pradesh, northeastern India. This discovery signifies the first new species of Paraparatrechina in 121 years, since the description of the sole previously known species, P.aseta (Forel, 1902), in the Indian subcontinent.

Two new species of doryline ants (Hymenoptera, Formicidae) with 11-segmented antennae from India.

Two new species of the subfamily Dorylinae Leach, 1815 namely Parasysciaganeshaiahi sp. nov. and Sysciaindica sp. nov. are described and illustrated based on the worker caste. These species were collected in the Eaglenest Wildlife Sanctuary, Arunachal Pradesh, Northeast India. Keys to Parasyscia of India and Syscia of Asia are provided based on the worker caste.