In this study, we use for the first time the electropenetrography (EPG) technique to characterize and describe the feeding activities of Collaria scenica (Stål) adults and their respective waveforms on wheat, Triticum aestivum L. plants. It comprised of four waveforms, two related to non-feeding (Np and R) and two with feeding activities (CR and I). The Np wave represents the insect resting or walking on the plant surface (75% of the recording time). R wave was associated to sensory evaluation of leaf surface with the tip of the labium (labial dabbing activity—ca. 1% of the recording time). Feeding activities were of relative short duration; cell rupture waveform (CR—ca. 49 min—ca. 15% of the recording time) was highly irregular due to constant movement of the stylets internally in the plant tissue. The waveform I (ca. 28 min—ca. 9% of the recording time) showed stereotypical and repetitive pattern and represents ingestion of the cell contents previously degraded via cell-rupturing activities. The damage caused by C. scenica in wheat leaflets is a result of cell-rupturing activities, generated by action of digestive enzymes plus mechanical action of serrated mandibular stylets. This results in whitish streaks, dots, or spots on the leaflet of wheat plants which cause significant damage and eventually plants’ death.

在这项研究中，我们第一次使用电子穿透率(EPG) 技术来表征和描述Collariascenea (Stål) 成虫的摄食活动及其各自在小麦、小麦上的波形L. 植物。它由四个波形组成，两个与非进食有关（Np 和 R），两个与进食活动有关（CR 和 I）。Np 波代表昆虫在植物表面上休息或行走（记录时间的 75%）。R 波与叶面与唇尖的感官评估相关（唇轻拍活动 - 记录时间的约 1%）。摄食活动持续时间相对较短；由于探针在植物组织内部不断移动，细胞破裂波形（CR-约 49 分钟-约 15% 的记录时间）非常不规则。波形 I（大约 28 分钟 - 大约 9% 的记录时间）显示出刻板的和重复的模式，代表了先前通过细胞破裂活动降解的细胞内容物的摄取。C.scenea造成的损害在小麦小叶中是细胞破裂活动的结果，由消化酶的作用加上锯齿状下颌管心针的机械作用产生。这会导致小麦植物的小叶上出现白色条纹、点或斑点，从而造成严重损害并最终导致植物死亡。