• HARSHITHA C
• SANNAPPA B

Laboratory investigations were undertaken at the Department of Studies in Sericulture Science, University of Mysore, Manasagangotri, Mysuru, at temperature ranging between 23 – 28ºC and 65 – 85 % Relative humidity, to understand the effect of lepidopteran insect/host species on its reproductive performance of progenies of an indigenous endo-pupal parasitoid, Tetrastichus howardi (Olliff) (Hymenoptera: Eulophidae). For experimentation, 2-day-old pupae of lepidopteran insect/host species were exposed to parasitism by 2-day-old T. howardi for 2 days at a host-parasitoid ratio of 1:1. After development of the parasitoid progenies, observations were recorded on the parasitoid developmental duration, progeny production (male and female), sex ratio, progeny female longevity. The results revealed that, reproductive efficiency of the parasitoid Tetrastichus howardi showed significant variation among the selected lepidopteran insect/host species. Emergence in insect/host species were greatly influenced on the progeny production of T. howardi. Among the insect/host species, H. armigera (120.80±4.54) and S. c. ricini (111.20±5.09) were recorded a highest number of progenies in compression to other insect/host species. Key words: Lepidopteran insects, progeny production, reproductive efficiency, Tetrastichus howardi.

"REPRODUCTIVE EFFICIENCY OF TETRASTICHUS HOWARDI (OLLIFF) (HYMENOPTERA: EULOPHIDAE) ON SOME LEPIDOPTERAN INSECT/HOST SPECIES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 2, page no.e824-e829, February-2025, Available :http://www.jetir.org/papers/JETIR2502500.pdf

"REPRODUCTIVE EFFICIENCY OF TETRASTICHUS HOWARDI (OLLIFF) (HYMENOPTERA: EULOPHIDAE) ON SOME LEPIDOPTERAN INSECT/HOST SPECIES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 2, page no. ppe824-e829, February-2025, Available at : http://www.jetir.org/papers/JETIR2502500.pdf