Abstract Ellca nevelka gen. et sp. nov. (Orthoptera: Elcanidae) is described from mid-Cretaceous Burmese amber and it is the smallest known elcanid (body length = 4.53 mm) characterized by a combination of morphological characters on the head, pronotum, metatibial spurs, and metatarsomeres. Well-preserved forewing venation indicates that the fossil belongs to Elcaninae; as such, this species is the latest known representative of this subfamily. The described species has a narrow pterostigma on its forewings, which suggests that this species could use both pairs of wings for active flight. A new hypothesis is proposed for the function of the enlarged and flattened metatibial spurs, which could help stabilize and control flight.

中文翻译：

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来自中白垩世缅甸琥珀的小型 elcanid，Ellca nevelka gen。等 sp. 11月，以及Elcanidae（直翅目）中胫骨骨刺的功能

摘要 Ellca nevelka gen。等 sp. 十一月 （直翅目：Elcanidae）来自白垩纪中期的缅甸琥珀，它是已知最小的 elcanid（体长 = 4.53 毫米），其特征是头部、前胸、胫骨骨刺和跖骨的形态特征组合。保存完好的前翅脉络表明该化石属于Elcaninae；因此，该物种是该亚科的最新已知代表。所描述的物种在其前翅上有一个狭窄的翼柱，这表明该物种可以使用两对翅膀进行主动飞行。对扩大和变平的胫骨骨刺的功能提出了新的假设，这有助于稳定和控制飞行。