Polyrhachis gracilior
Encyclopedia
Polyrhachis gracilior is a species of ant
Ant
Ants are social insects of the family Formicidae and, along with the related wasps and bees, belong to the order Hymenoptera. Ants evolved from wasp-like ancestors in the mid-Cretaceous period between 110 and 130 million years ago and diversified after the rise of flowering plants. More than...

 found in the southwest and northeast India. It is one of the few ants that build arboreal nests made of leaves stitched together using silk produced by their larvae.

Originally described as a "race" of Polyrchachis furcata, it was elevated to a full species by C T Bingham
Charles Thomas Bingham
Charles Thomas Bingham was an Irish military officer and entomologist.Bingham’s military career began in India where he was a soldier in the Bombay Staff Corps and later with the Bengal Staff Corps...

 who noted differences in the shape of the spines. A species described from Travancore as weberi by Horace Donisthorpe
Horace Donisthorpe
Horace St. John Kelly Donisthorpe was an eccentric British myrmecologist and coleopterist, memorable in part for his enthusiastic championing of the renaming of the genus Lasius after him as Donisthorpea, and for his many claims of discovering new species of beetles and ants.He is often considered...

 in 1943 was identified as being identical to gracilior by Barry Bolton
Barry Bolton
Barry Bolton is an English myrmecologist, the world's leading expert on the classification, systematics and taxonomy of ants, who long worked at The Natural History Museum...

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