syrma

Syrma is a genus of katydids, commonly known as bush crickets or coneheads, in the subfamily Phaneropterinae. They are found in the Oriental realm, primarily in South Asia and Southeast Asia. The genus was described by Carl Stål in 1874. Syrma species are characterized by their distinct tegmina (forewings) which are often ovate or narrowly elongated and typically bear prominent venation. The pronotum, which covers the head and thorax, can vary in shape and size among species, sometimes featuring a prominent cephalic projection, though less pronounced than in some other conehead genera.

These insects are generally herbivorous, feeding on the leaves of various plants. Their coloration often provides camouflage, allowing them to blend in with their leafy surroundings. Like other katydids, Syrma species are known for their stridulation, a sound produced by rubbing their wings together, used for communication, particularly for attracting mates. The life cycle involves eggs laid on plants, followed by nymphal instars before reaching adulthood. Sexual dimorphism is often observed, with females typically larger than males and possessing an ovipositor for egg-laying. Research on Syrma is ongoing, contributing to the understanding of insect diversity and evolution within tropical ecosystems.