Two Rare Neuroptera Species Discovered in Kerala

January 9, 2025

Recent research in Kerala has revealed two rare species belonging to the Order Neuroptera. The Shadpada Entomology Research Lab (SERL) at Christ College has documented these findings, which include Glenochrysa zeylanica and Indophanes barbara. The rediscovery of Glenochrysa zeylanica marks its first report in India after being thought endemic to Sri Lanka for over a century. Indophanes barbara, an antlion, has also been identified across various locations in Kerala.

Discovery Overview

The research team, led by Doctoral Scholar Suryanarayanan T. B. and supervisor Bijoy C., has made contributions to entomology. The findings were published in respected journals, including the Journal of the Entomological Research Society and Natura Somogyiensis. The study marks the biodiversity of Kerala and its similarities with Sri Lankan fauna.

Glenochrysa zeylanica Details

Glenochrysa zeylanica is a green lacewing species rediscovered in Wayanad district. This species had not been observed for 111 years. Previously believed to be confined to Sri Lanka, its presence in India expands the known range of this insect. This discovery represents the twelfth green lacewing species identified in Kerala.

Indophanes barbara Characteristics

Indophanes barbara is classified as an antlion and is noted for its unique habitat preferences. Unlike typical antlions, its larvae do not construct pits but dwell beneath loose soil. This behaviour protects them from environmental elements. The adult form is often mistaken for damselflies due to morphological similarities, yet they can be distinguished by their long antennae.

Neuroptera Order

The Order Neuroptera encompasses net-winged insects, including lacewings and antlions. This order contains approximately 6,000 species and is part of the broader taxon Neuropterida. Neuropterans are characterised by their four membranous wings and chewing mouthparts. They undergo complete metamorphosis, with larvae acting as specialised predators.

Research Funding and Support

The research conducted by SERL received financial backing from the Council of Scientific and Industrial Research (CSIR), New Delhi. The lab focuses on the study of lesser-known organisms, contributing to the understanding of insect diversity in the region.

Glenochrysa zeylanica was last seen in 1914.
Indophanes barbara larvae do not build pits.
Neuroptera includes 6,000 species worldwide.
Antlions and damselflies belong to different orders.
SERL is based at Christ College, Irinjalakuda.

Implications for Biodiversity Research

The discoveries of these species tell the importance of ongoing entomological research. They highlight the rich biodiversity of Kerala and the need for conservation efforts. The findings also suggest potential undiscovered species within the region, encouraging further exploration and study.

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