Ultrastructure and morphometric characteristics of Oecophylla smaragdina (Fabricius, 1775) (Hymenoptera: Formicidae)

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  • Department of Zoology, St. Xavier’s College (Autonomous), Palayamkottai – 627002, Tamil Nadu ,IN
  • Department of Zoology, St. Xavier’s College (Autonomous), Palayamkottai – 627002, Tamil Nadu ,IN
  • Department of Zoology, Jayaraj Annapackiam College for Women (Autonomous), Periyakulam, Theni – 625601, Tamil Nadu ,IN
  • Department of Zoology, Jayaraj Annapackiam College for Women (Autonomous), Periyakulam, Theni – 625601, Tamil Nadu ,IN
  • Department of Zoology, St. Xavier’s College (Autonomous), Palayamkottai – 627002, Tamil Nadu ,IN




Morphometric characteristics, Oecophylla smaragdina, Principal Component Analysis (PCA), taxonomic investigations


In this study, we explored various aspects of Oecophylla smaragdina, a potential biocontrol agent, evolution by examining its morphometric characteristics. We employed an intensive All-out search method (AOSM) to gather specimens from multiple locations in Vadakku Karaseri, Tamil Nadu. Our analysis involved measuring 16 morphological traits and indices, including Total Length, Head Width, Head Length, Eye Length and more, using specimens from five colonies in each locality. By calculating various morphometric indices, we assessed specific features and conducted a Principal Component Analysis (PCA) to determine the significance of head-related variables, antennae, and body size in shaping morphometric variation. Our study also revealed positive and negative associations between different morphometric variables, as highlighted by Pearson correlation coefficients. Furthermore, we used a Scanning Electron Microscope to examine the ultrastructure of the abdomen, revealing distinct features such as a one-jointed pedicel and modifications of the poison gland and stings. This comprehensive research provides valuable insights into O. smaragdina morphometric characteristics, enhancing our understanding of its variability and potential adaptations in various habitats.


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How to Cite

KARTHICK, M., SAMUEL, B., SELVAM, I. K., SAGAYA RANI, C., & AZHAGU RAJ, R. (2024). Ultrastructure and morphometric characteristics of <i>Oecophylla smaragdina</i> (Fabricius, 1775) (Hymenoptera: Formicidae). Journal of Biological Control, 38(1), 73–81. https://doi.org/10.18311/jbc/2024/35481



Research Articles
Received 2023-10-29
Accepted 2024-02-27
Published 2024-04-11



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