Diverse Texas beetles (Coleoptera: Elateroidea: Brachypsectridae) in mid-Cretaceous Burmese amber: sexual dimorphism and palaeoecology
Diverse Texas beetles (Coleoptera: Elateroidea: Brachypsectridae) in mid-Cretaceous Burmese amber: sexual dimorphism and palaeoecology
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白垩纪中期缅甸琥珀中的多种德克萨斯甲虫（鞘翅目：Elateroidea：Brachypsectridae）：两性二态性和古生态学
DOI：
10.11646/palaeoentomology.2.5.16
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发表时间：
2019-10-01
期刊：
影响因子：
--
通讯作者：
Cai, Chenyang
中科院分区：
文献类型：
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作者：
Tihelka, Erik;Huang, Diying;Cai, Chenyang
短蝽科是一个物种贫乏的扁虫科，包括现存的两个属，分布范围横跨新北极、古北、东方和澳大利亚地区。在这里，我们描述了来自中白垩纪缅甸琥珀的第二种德克萨斯州甲虫，Hongipsectra electrella gen. et sp. 11 .这个新属可以从迄今为止已知的所有短形甲虫中区分出来，因为它的触角有11节，雄性为6-10节，双节状，雌性为锯齿状，前角有一对后外侧的隆突，后缘有一个m形缺口，用于接收心形的胸甲。本发现为短截蝇科增加了第4属和第11种。考虑到已知的德克萨斯甲虫属中有两个来自白垩纪缅甸琥珀，这个科在中生代的分布范围和种类可能比今天要广泛得多。提供了短截蝇科现存和化石属的关键，以及化石物种的列表。
Brachypsectridae is a species-poor elateroid family containing two extant genera with a disjunct distribution range spanning the Nearctic, Palaearctic, Oriental, and Australian regions. Here we describe a second Texas beetle from mid-Cretaceous Burmese amber, Hongipsectra electrella gen. et sp. nov. The new genus can be distinguished from all hitherto known brachypsectrids by the 11-segmented sexually dimorphic antennae with antennomeres 6–10 bilamellate in males and serrate in females, pronotum with a pair of posterolateral carinae and an M-shaped notch in the posterior margin for the reception of a cordiform scutellum. The present discovery adds a fourth genus and eleventh species to Brachypsectridae. Given that two of the known Texas beetle genera are from the Cretaceous Burmese amber, the family probably have been much more widespread and diverse in the Mesozoic than it is today. A key to the extant and fossil genera of Brachypsectridae is provided, along with a list of fossil species.