Most Asopinae stinkbugs (Hemiptera: Pentatomidae) prey on other insects, including sawfly larvae (Hymenoptera: Symphyta). Sawfly larvae of the Argidae and Pergidae contain toxic peptides, but whether they are defended against stinkbugs remains poorly studied. A literature survey indicates that no publication is devoted to laboratory tests specifically using these sawflies against stinkbugs. Here, laboratory bioassays were made with the stinkbug Picromerus bidens and four sawfly species at last larval instars: Arge ochropus (Argidae), Arge pagana (also tested at medium instars), Lophyrotoma zonalis (Pergidae), and Allantus rufocinctus (Tenthredinidae). Following 24 h of possible predator-prey interactions, no larvae of A. rufocinctus survived, whereas most or all larvae of the other sawfly species did survive and were still alive 48 h later. When feeding on an argid or pergid larva, the feeding periods lasted on average 6–20 s only, some bugs removing their rostrum and abruptly backing away. Full-grown larvae of A. pagana were attacked less than younger ones. It is likely that the tested Argidae and Pergidae are well defended against P. bidens by potent, internal antifeedants, while defensive body movements combined with a large body size play a secondary role.

大部分的Asopinae臭虫（半翅目：Pentatomidae）会捕食其他昆虫，包括锯蝇幼虫（膜翅目：Symphyta）。Argidae和Pergidae的蝇幼虫含有毒性肽，但它们是否能防御臭虫仍未得到很好的研究。文献调查表明，没有出版物专门用于这些臭虫对付臭虫的实验室测试。在这里，在最后的幼虫龄期中用臭bug Picromerus bidens和四个锯蝇种进行了实验室生物测定：Arge ochropus（Argidae），Arge pagana（也在中等龄期进行了测试），Lophyrotoma zonalis（Pergidae）和Allantus rufocinctus（T科）。捕食者与猎物之间可能发生24小时相互作用后，没有红褐线虫的幼虫存活，而其他锯虫种类的大多数或所有幼虫都存活了，并在48小时后仍然存活。当喂食一个有节肢或近生的幼虫时，喂食时间平均仅持续6到20 s，一些虫子移走了它们的讲台并突然退缩了。满满的A. pagana幼虫受到的侵袭比年轻的少。经过测试的Argidae和Pergidae可能通过有效的内部抗拒剂很好地防御了波德氏菌，而防御性的身体运动和较大的体型则起着次要作用。