Abstract
The world genera of the Bobekia-group of Alysiini (Braconidae: Alysiinae) are reviewed and keyed. A new genus (Neodiastagen. nov.) is proposed for Phasmidiasta ecuadorensis Fischer, 2006, from Ecuador. One new subgenus (Parabobekoidessubg. nov.; type species Separatatus (Parabobekoides) yinshanisp. nov. from NW China) is described and illustrated. Neosymphanes Belokobylskij, 1998 is a new synonym of Bobekia Niezabitowski, 1910 (syn. nov.).
Highlights
The specimens were collected in Malaise traps in an abandoned garden in the village of Shangluo (NW China: Shaanxi, Luonan) and directly preserved in 70% alcohol; they were later chemically treated with a mixture of 96% xylene + alcohol and amylacetate (AXA-method; van Achterberg 2009) before card-pointing
The type species of all genera were examined for the key, except for Senwot Wharton, which was included using information from existing literature
In 2017 a series of a similar species was collected at Luonan (Qinling Mountains, Shaanxi, NW China) in which males have the venation modified (Figs 17, 20) in comparison to females
Summary
The group of alysiine genera with sculptured second metasomal tergite, distinct dorsope in the first metasomal tergite, and a closed first subdiscal cell of the fore wing (here defined as the Bobekia-group of the Alysiinae, Braconidae) is comprised of eight. The lack of comprehensive keys has confused several researchers and resulted in associating Chinese species with Afrotropical genera (Wharton 2002; Zheng et al 2013). The recent series of papers on this group (Zheng et al 2013, 2017, 2018; Belokobylskij 2015; Yao et al 2018a, b, 2019) and the discovery in Shaanxi (NW China) of a new species with conspicuous sexual dimorphism seems the right moment to give a revised key to all genera of this group worldwide; to describe a new genus, a new subgenus, and one new species; and to report the sexual dimorphism present in the new species. Others seem to parasitize presumably more accessible hosts such as mining larvae of Agromyzidae and Muscidae (see note under Bobekia Niezabitowski)
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