Seasonal changes in the firefly (Luciola lateralis) were studied in the laboratory to understand biological characteristics. Fecundity varies with seasons; these were measures at $162.0{pm}8.67$ in the winter, $226.9{pm}15.84$ in the spring and $166.6{pm}9.3$ in the summer. Seasonal change also influenced oviposition period ($6.9{pm}0.59$ days in the winter, $16.1{pm}1.10$ days in the spring and $8.2{pm}0.61$ days in the summer). The firefly oviposited every $2.5{pm}0.22$ days in the winter, $3.9{pm}0.25$ days in the spring, and $2.3{pm}0.14$ days in the summer. Oviposition occurred 3 times in the winter, and 4 times in the spring and summer. The number of eggs per cycle was $52.2{pm}4.56$ and $55.9{pm}4.38$ in winter and spring, respectively, and was lower in the summer ($42.2{pm}3.76$). Egg period significantly differed among seasons. The life span of the firefly was $17.9{pm}0.14$ days in the winter, $19.7{pm}0.25$ days in the spring and $16.5{pm}0.43$ days in the summer.