Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.02.11.942920v1?rss=1 Authors: Du, B.-J., Chen, R., Tao, W.-T., Shi, H.-L., Bu, W.-J., Liu, Y., Ma, S., Ni, M.-Y., Kong, F.-L., Xiao, J.-H., Huang, D.-W. Abstract: The true bug family Coreidae is noted for its distinctive expansion of antennae and tibiae. However, the origin and early diversity of such expansions in Coreidae are unknown. Here, we describe the nymph of a new coreid species from a Cretaceous Myanmar amber. Magnusantenna wuae gen. et sp. nov. (Hemiptera: Coreidae) differs from all recorded species of coreid in its exaggerated antennae (nearly 12.3 times longer and 4.4 times wider than the head). Such antennal elaboration indicates that long-distance chemical communication behavior in Hemiptera has been already well established in the early of Upper Cretaceous. The specialized antenna maintains in adult like extant coreids, which means that antennae plays an important role in sexual display and defense behavior. Even so, the highly specialized trait would also have confronted a substantial investment and high risk, which may have facilitated the final extinction of the species. Copy rights belong to original authors. Visit the link for more info