Museum of Natural History, University of Wrocaw, Sienkiewicza 21, 50-335 Wrocaw, Poland. .
Schmalhausen Institute of Zoology, National Academy of Sciences of Ukraine, Bogdana Khmelnitskogo 15, Kiev, 01601, Ukraine. Borissiak Paleontological Institute of the Russian Academy of Sciences, Profsoyuznaya Str. 123, Moscow, 117997, Russia..
Zootaxa. 2021 Jul 20;5004(2):395-400. doi: 10.11646/zootaxa.5004.2.8.
Despite being among the most species-rich extant animal genera, Euconnus Thomson is rare in fossil record. Merely six species found in relatively young, Eocene and Oligocene ambers have been placed in this genus, which currently includes over 2,600 extant nominal species distributed worldwide. We describe †Euconnus nathani sp. n., the first extinct, unambiguously placed member of the broadly distributed, extant Palaearctic subgenus Cladoconnus Reitter, based on a unique male specimen in Upper Eocene Rovno amber, Ukraine. The male of the new species has monstrously modified antennae, in general structure showing close similarities to those of extant congeners, but the modification of antennomere 8 is so profound and bizarre that this one antennal segment alone is sufficient to identify adults of E. nathani.
尽管 Euconnus Thomson 是现存动物属中物种最丰富的属之一，但在化石记录中却很少见。这个属目前包括分布在全球的超过 2600 个现存的命名物种，仅在相对年轻的始新世和渐新世琥珀中发现了六种已被归入该属的物种。我们描述了†Euconnus nathani sp. n.，这是第一个已灭绝的、明确归入分布广泛的现生欧洲亚种 Cladoconnus Reitter 的成员，其基于一个独特的雄性标本，来自乌克兰上始新统的罗夫诺琥珀。新种的雄性触角具有巨大的变形，整体结构与现生近缘种非常相似，但触角第 8 节的变形是如此深刻和奇异，以至于仅这一节触角就足以识别 E. nathani 的成虫。
