The reproductive traits of the mymarid wasp Cosmocomoidea annulicornis (Ogloblin) (Hymenoptera: Mymaridae) attacking eggs of the sharpshooter Tapajosa rubromarginata (Signoret) (Hemiptera: Cicadellidae) were evaluated under laboratory conditions. Bioassays were carried out to estimate the realized fecundity and egg load of females. The ovigeny index was calculated and different biological traits, such as body size, oöcyte length, gaster length and wing length, were analysed to assess significant associations between these traits and the species fitness. In addition, the effect of host availability and feeding on longevity and potential fecundity throughout life and the effect of female age on egg maturation dynamics were assessed. The results showed that C. annulicornis is a strongly synovigenic species. A positive correlation was found between fecundity and longevity of the females and between body size and oöcyte length. Contrary to expected, body size was not related to fecundity and longevity. Females lived significantly longer in the presence of hosts and honey than when they were host-deprived and honey-fed or both host and honey deprived. Host availability had a significant effect on the amount of eggs laid by C. annulicornis females. Female age was negatively associated with oöcyte length. Furthermore, females were able to mature additional eggs as they aged, nevertheless, when host-deprived, senescent females presented significantly less mature eggs than younger ones, suggesting a possible egg oosorption. These results might contribute to a better understanding of the reproductive potential of this species as a biocontrol agent.

在实验室条件下评估了 mymarid 黄蜂Cosmocomoidea annulicornis (Ogloblin) (Hymenoptera: Mymaridae) 攻击神枪手Tapajosa rubromarginata (Signoret) (Hemiptera: Cicadellidae) 的卵的繁殖性状。进行生物测定以估计雌性的实际繁殖力和卵载量。计算了产卵指数，并分析了不同的生物学特征，如体型、卵母细胞长度、腹长和翼长，以评估这些特征与物种适应性之间的显着关联。此外，还评估了宿主可用性和摄食对寿命和潜在繁殖力的影响以及女性年龄对卵子成熟动态的影响。结果表明，C. annulicornis是一种强烈的共生物种。发现雌性的繁殖力和寿命之间以及体型和卵母细胞长度之间存在正相关。与预期相反，体型与繁殖力和寿命无关。雌性在宿主和蜂蜜存在下的寿命明显长于宿主剥夺和蜂蜜喂养或宿主和蜂蜜都被剥夺时。宿主可用性对C. annulicornis产卵量有显着影响女性。女性年龄与卵母细胞长度呈负相关。此外，随着年龄的增长，雌性能够使额外的卵子成熟，然而，当宿主剥夺时，衰老的雌性比年轻的雌性表现出的成熟卵明显更少，这表明可能存在卵子吸收。这些结果可能有助于更好地了解该物种作为生物防治剂的繁殖潜力。