Cucumber moth, Diaphania indica (Saunders) is a polyphagous insect, becoming one of the major constraints in cost-effective cultivation of bitter gourd. As the detailed knowledge of the biology of insect-pest is essential for the application of control methods, the biometrics of cucumber moth, D. indica was studied on bitter gourd in laboratory conditions during 2019 at Insect Culture Laboratory, Department of Entomology, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana. Gravid females laid 93.6 ± 44.14 eggs having the morphometrics of 0.7 ± 0.02 and 0.42 ± 0.02 mm in terms of length and breadth, respectively. The mean larval duration of 1st, 2nd, 3rd, 4th and 5th instar was observed to be 1.49, 2.41, 3.59, 2.54 and 3.3 days, respectively with the total mean larval period of 13.33 days, while length and breadth varied from 1.75 to 21.65 and 0.26 to 2.94 mm for 1st to 5th instar. The pupal period of D. indica lasted for 7.93 ± 1.06 days which further accounted for the average total life cycle of 26.91 ± 1.01 days. The pre-oviposition, oviposition and post-oviposition periods were recorded as 1.5 ± 0.53, 3.9 ± 0.74 and 1.9 ± 0.74 days, respectively with sex ratio of 1:1.1 (male: female). The longevity of male and female moths was 6.1 ± 0.71 and 7.69 ± 1.22 days, respectively.

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中文翻译：

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黄瓜蛾、Diaphania indica (Saunders) 对苦瓜 (Momordica charantia L.) 的生物特征评估

黄瓜蛾Diaphania indica (Saunders) 是一种杂食性昆虫，成为苦瓜经济高效栽培的主要制约因素之一。由于昆虫害虫生物学的详细知识对于控制方法的应用至关重要，黄瓜蛾D. indica的生物识别技术2019 年在哈里亚纳邦希萨尔州乔杜里查兰辛格哈里亚纳邦农业大学昆虫学系昆虫培养实验室在实验室条件下对苦瓜进行了研究。妊娠雌性产下 93.6 ± 44.14 个卵，长度和宽度的形态测量学分别为 0.7 ± 0.02 和 0.42 ± 0.02 毫米。1、2、3、4、5龄的平均幼虫历时分别为1.49、2.41、3.59、2.54和3.3天，总平均幼虫期为13.33天，长和宽从1.75到21不等。 0.26 至 2.94 mm 用于 1 至 5 龄。D. indica的蛹期持续了 7.93 ± 1.06 天，这进一步说明了平均总生命周期为 26.91 ± 1.01 天。产卵前、产卵期和产卵后时期分别记录为 1.5±0.53、3.9±0.74 和 1.9±0.74 天，性别比为 1:1.1（男性：女性）。雄蛾和雌蛾的寿命分别为 6.1 ± 0.71 和 7.69 ± 1.22 天。

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