Abstract：
In this study, we describe Metriocnemus erythranthei sp. nov. and Limnophyes viribus sp. nov., leafminers of herbaceous wetland plants. The M. erythranthei larva is a true miner entering fresh leaves and excavating the tunnels, and the L. viribus larva inhabits vacated mines of M. erythranthei. M. erythranthei is widespread in North America, with collections from the Pacific coast to Pennsylvania, and L. viribus has been collected from Iowa and Oregon. We also describe the larva of a possible new species associated with these plants, which we refer to as Metriocnemus sp. \"Oregon\". A key to the known larval stages of North American Metriocnemus is also provided. Along with providing a detailed account of the mining ecology of these new species, we discuss additional observations of mostly Orthocladiinae midges associated with aquatic and terrestrial plants. These include documenting the rearing of Metriocnemus eurynotus (Holmgren, 1883) from larvae feeding on Impatiens (Balsaminaceae) cotyledons, initially as leafminers and later externally. Larvae of M. eurynotus also were found feeding within mines of M. erythranthei on Veronica (Plantaginaceae) and were collected along with M. erythranthei larvae on leaves of Petasites (Asteraceae).
摘要：
在这项研究中,我们描述了Metriocnemuserythrantheisp。11月。和石灰岩病毒。11月。,草本湿地植物的叶子矿工。赤氏M.erythranthei幼虫是一个真正的矿工，进入新鲜的叶子并挖掘隧道，和L.virius幼虫栖息在空置的M.erythranthei地雷中。赤霉病菌在北美很普遍，从太平洋海岸到宾夕法尼亚州的藏品，L.virius是从爱荷华州和俄勒冈州收集的。我们还描述了与这些植物相关的可能新物种的幼虫，我们称之为Metriocnemussp。\"俄勒冈\"。还提供了北美Metriocnemus已知幼虫阶段的关键。除了提供这些新物种的采矿生态的详细说明，我们讨论了与水生植物和陆生植物相关的大多数Orthocladiinaemid的其他观察结果。这些包括记录Metriocnemuseurynotus（Holmgren，1883年）来自以凤仙花（Balsaminaceae）子叶为食的幼虫，最初是作为矿工，后来是在外部。还发现了M.eurynotus的幼虫在维罗妮卡（Plantaginaceae）的赤霉病菌矿山中取食，并与赤霉病菌幼虫一起收集在Petasites（菊科）的叶子上。
