Taxonomic Revision and Morphological Keys for Identification of Thrips Species (Thysanoptera) on Vegetable Crops

Abstract

Thrips species belonging to the order Thysanoptera are important pests of vegetable crops, causing direct feeding damage and transmitting several economically significant plant viruses. Accurate taxonomic identification is essential for effective pest monitoring, ecological studies, and integrated pest management programs. The present study conducted a taxonomic revision and developed morphological identification keys for thrips species associated with major vegetable crops. Specimens were collected from diverse vegetable-growing regions and examined using standard taxonomic and microscopic techniques. Diagnostic morphological characters including body coloration, antennal segmentation, wing venation, setal arrangement, and abdominal structures were carefully analyzed for species differentiation. Comparative examination revealed significant interspecific variation in morphological traits useful for reliable identification of economically important thrips species. Updated taxonomic descriptions and illustrated identification keys were prepared to facilitate accurate recognition of closely related species occurring on vegetable crops. Several species exhibited overlapping external characteristics, emphasizing the importance of detailed microscopic observations for precise identification. The revision also clarified certain taxonomic ambiguities and synonymies reported in previous classifications. Distribution patterns and host associations of identified species were documented to improve understanding of thrips diversity within vegetable agroecosystems. The developed morphological keys provide practical tools for researchers, quarantine agencies, and pest management professionals involved in thrips surveillance and diagnostics. The findings contribute to improved taxonomic knowledge and support the implementation of targeted integrated pest management strategies aimed at reducing crop losses caused by thrips infestations and associated viral diseases in vegetable production systems.