New Wasps of Maimetshidae (Hymenoptera: Ceraphronoidea) from the Mid-Cretaceous Myanmar Amber

One new genus and five new species of the extinct family Maimetshidae from mid-Cretaceous Kachin amber are described based on five well-preserved specimens as follows: <i>Maimetshasia nova</i> Li, Kopylov and Rasnitsyn, sp. nov.; <i>Maimetshasia engeli</i> Li, Kopylov and Rasnitsyn, sp. nov.; <i>Guyotemaimetsha perrichoti</i> Li, Kopylov and Rasnitsyn, sp. nov.; <i>Guyotemaimetsha ortegablancoi</i> Li, Kopylov and Rasnitsyn, sp. nov.; and <i>Crucimaimetsha nigra</i> Li, Kopylov and Rasnitsyn, sp. nov. A new generic synonymy is proposed: <i>Turgonalus</i> Rasnitsyn, 1990 (=<i>Turgonaliscus</i> Engel, 2016, syn. nov. and = <i>Ahiromaimetsha</i> Perrichot, Azar, Nel and Engel, 2011, syn. nov.); <i>Guyotemaimetsha</i> Perrichot, Nel and Néraudeau, 2004 (=<i>Burmaimetsha</i> Perrichot, 2013, syn. nov.); <i>Afrapia</i>, Rasnitsyn and Brothers, 2009 (=<i>Afromaimetsha</i>, Rasnitsyn and Brothers, 2009, syn. nov.); and <i>Iberomaimetsha nihtmara</i> Ortega-Blanco, Delclòs and Engel, 2011 are transferred to <i>Afrapia,</i> Rasnitsyn and Brothers, 2009. This results in the following new combinations: <i>Turgonalus cooperi</i>, Rasnitsyn and Jarzembowski, 1998, comb. resurr.; <i>Turgonalus najlae</i> (Perrichot, Azar, Nel & Engel, 2011), comb. nov; <i>Afrapia robusta</i> (Rasnitsyn & Brothers, 2009), comb. nov; and <i>Afrapia nihtmara</i> (Ortega-Blanco, Delclòs & Engel, 2011), comb. nov. The occurrence of various genera of Maimetshidae in amber and compression fossil and the morphological differences of the forewings in all the fossil species are provided, which highlights a high level of genus-level diversity among Mesozoic maimetshids. The key to genera was updated.