Table_2_New Genus and Species of Empheriidae (Insecta: Psocodea: Trogiomorpha) and Their Implication for the Phylogeny of Infraorder Atropetae.XLSX

Two species of psocids discovered from the Mid-Cretaceous Burmese amber, Latempheria kachinensis Li, Yoshizawa, and Yao, gen. et sp. nov. and Burmempheria curvatavena Li, Yoshizawa, and Yao, sp. nov., are described and assigned to the Empheriidae (Trogiomorpha: Atropetae) family. A phylogenetic analysis of the infraorder Atropetae is conducted based on 38 morphological characters of three outgroups and fifteen ingroups, which supported the monophyly of Atropetae including fossil and extant taxa. In the phylogenetic result, all the genera of fossil families Empheriidae and Archaeatropidae form a monophyletic group, sister to the extant members of Atropetae. The two fossil families also share a lot of similarities in morphology, locality, and geological period. Recently discovered fossil species exhibited combined morphological characters of both families. Based on these observations and the results of the phylogenetic analysis, Archaeatropidae is treated here as a new junior synonym of Empheriidae.

本研究记述了白垩纪中期缅甸琥珀中发现的两种啮虫：新属新种凯钦拉啮（Latempheria kachinensis Li, Yoshizawa et Yao, gen. et sp. nov.）与新种弯脉缅甸啮（Burmempheria curvatavena Li, Yoshizawa et Yao, sp. nov.），并将其归入泥啮科（Empheriidae），隶属于毛啮亚目（Trogiomorpha）澳啮下目（Atropetae）。本研究基于3个外类群与15个内类群的38项形态学特征，对澳啮下目（Atropetae）开展系统发育分析，结果证实包含化石与现生类群的澳啮下目为单系群。系统发育结果显示，泥啮科（Empheriidae）与古澳啮科（Archaeatropidae）的所有化石属类共同构成单系群，为澳啮下目现生类群的姊妹群。这两个化石科在形态特征、产出产地及地质时代上均存在诸多相似之处。新近发现的化石物种兼具两个科的形态特征。基于上述观察与系统发育分析结果，本研究将古澳啮科（Archaeatropidae）处理为泥啮科（Empheriidae）的新晚出异名。