The lower Albian Jinju Formation has produced various fossils of invertebrates. Of them, insect fossils have remained understudied, and especially, orthopteran fossils have never been described from the Jinju Formation. Here we report a new species of the Elcanidae (Orthoptera: Elcanoidea), Panorpidium spica sp. nov. based on three specimens from the Jinju Formation. Notably, we have applied Wavelength Dispersive Spectrometer (WDS) analysis for the first time on insect fossils, and discovered that the carbon elemental maps are helpful in recognizing crucial morphology. The presence of pterostigmata in forewing supports that elcanids evolved a unique flight mechanism distinct from other extant orthopterans. Based on a detailed morphological comparison with the paddles of the extant tridactylids, it is inferred that the leaf-shaped spurs on the metatibiae of elcanids were used for jumping on the water, although other possible functions cannot be ruled out. Diving into the water and jumping on the water surface must have been an effective way of escaping from predators, both for the flightless nymphs and the short-range flying adults.

下部的阿尔比金菊组已经产生了各种无脊椎动物化石。其中，昆虫化石尚待研究，尤其是金菊组从未描述过直翅类化石。在这里，我们报告了一种新的Elcanidae（直翅目：Elcanoidea），Panorpidium spicasp。十一月 以晋州组的三个标本为基础。值得注意的是，我们首次在昆虫化石上应用了波长色散光谱仪（WDS）分析，并发现碳元素图谱有助于识别关键形态。前翅中翼龙的存在支持了elcanids进化出一种独特的飞行机制，与其他现存的直翅类动物不同。根据与现存的三趾yl的桨叶进行的详细形态比较，可以推断出，虽然不能排除其他可能的功能，但使用了象脚meta的胫骨上的叶状马刺来跳跃。对于不飞的若虫和短距离飞行的成年人而言，跳入水中并在水面上跳跃必定是逃避捕食者的有效方法。