Pulse beetle, Callosobruchus maculatus (Bruchidae: Coleoptera), commonly known as Cowpea weevil or Cowpea seed beetle is a pest of stored grain that attacks legumes in the field and stored conditions. An investigation was conducted for screening the developmental preference of Callosobruchus maculatus in different legumes. Five different legumes were used with three replications in Completely Randomized Design (CRD). The grains of legumes were obtained from the local market of Dera Ghazi Khan. Two pairs of adult (C. maculatus) were inoculated in 20 g seeds of different legumes. Statistics on egg count, egg-laying preference percentage, hatching percentage, incubation period, larval + pupal period, total developmental period (from egg to adult), male and female population, total adult emergence, No. of holes in seeds and seeds weight loss percentage was recorded. The outcomes of this study represented that red kidney bean grains (22.54%) contained more egg-laying preference for C. maculatus as compared to other tested legumes while desi chickpea grains (14.53%) had a lesser ovipositional preference. Minimum growth period was recorded on mung bean (22.66 days), followed by cowpea (24.33 days), kabuli chickpea (27 days) and desi chickpea (30.33 days). But there was (0.0 days) no growth of C. maculatus on red kidney bean grains. In short, smooth seed coat and well-filled seeds were most preferred by C. maculatus for egg-laying, short developmental time, maximum adult emergence and increased holed seeds.

脉冲甲虫Callosobruchus maculatus（Bruchidae：Coleoptera），通常被称为Cow豆象鼻虫或Cow豆种子甲虫，是一种储存谷物的害虫，它在田间和储存条件下会攻击豆类。进行了一项调查，以筛选不同豆类中黄褐Callosobruchus maculatus的发育偏好。在完全随机设计（CRD）中，使用了五种不同的豆科植物，进行了三遍重复实验。豆类谷物是从Dera Ghazi Khan的当地市场获得的。两对成年（C. maculatus）接种在20克不同豆类种子中。卵数，产卵率，孵化率，孵化期，幼虫+ p期，总发育期（从卵到成年），雌雄种群，成年总出苗率，种子孔数和种子重量的统计数据记录损失百分比。本研究的结果表示的是红菜豆晶粒（22.54％）含有更多的产蛋偏好豆象相比于其它测试豆类而DESI鹰嘴豆谷物（14.53％）有较小的产卵偏好。记录到绿豆的最短生长期（22.66天），其次是cow豆（24.33天），卡布力鹰嘴豆（27天）和德西鹰嘴豆（30.33天）。但是没有（0.0天）斑纹梭菌的生长在红芸豆粒上。总之，光滑的种皮和填充良好的种子最受斑纹梭菌的产卵，较短的发育时间，最大的成年出苗率和带孔种子的增加。