Members of the cosmopolitan wasp tribe Baeini (Platygastridae s.l.) are obligate endoparasitoids of spider eggs. The group is estimated to have well over 2000 species globally, approximately 80% of which are undescribed. Most species belong to the genus Idris Förster s.l., a megadiverse group which is probably paraphyletic without the inclusion of a number of smaller genera. The group has resisted phylogenetic analysis using morphology largely due to convergence associated with reductional character states or, in the case of molecular analysis, insufficient taxon sampling and markers. To make any headway in understanding the diversity and relationships within the tribe, and particularly for the genus Idris, a pragmatic approach is to describe species groups that can be later incorporated into a broader sampling of taxa for molecular analysis. In taking this approach, we describe two new species from the Oriental region (India) with brachypterous females, Idris benaka sp. nov. and Idris samueli sp. nov., which are assigned to a new species group, the ‘benaka‐group’. These two species are morphologically similar to a number of undescribed Idris from Australia and southern Africa which, if related, point to a possible circum‐Indian Ocean distribution for this species group. In addition, we also discuss the make‐up and relationships of Idris, and the nature of wing reduction in the Baeini.

中文翻译：

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起源于东方地区的速生伊德里斯·福斯特（IdrisFörster）新物种群，1856 sl（膜翅目：Platygastridae sl）

大都会黄蜂部落Baeini（Platygastridae sl）的成员是蜘蛛卵的专性内寄生物。据估计，该群体在全球范围内有2000多个物种，其中约80％未描述。大多数物种属于伊德里斯·福斯特（IdrisFörstersl）属，这是一个巨大的生物多样性群体，可能在不包括许多较小属的情况下是共生的。该小组抵制了使用形态学的系统发育分析，这主要是由于与还原性特征状态相关的趋同，或者在分子分析的情况下，分类单元采样和标记不足。在了解部落内部的多样性和关系方面取得任何进展，特别是对于伊德里斯属，一种务实的方法是描述物种组，这些物种组随后可以合并到一个更广泛的分类单元样本中，以进行分子分析。在采用这种方法时，我们描述了来自东方地区（印度）的两个新物种，其中有速纹 雌性伊德里斯·本纳卡（Idris benaka sp。）。十一月 和Idris samueli sp。十一月 ，它们被分配给一个新的物种组，即“ benaka组”。这两个物种在形态上类似于来自澳大利亚和南部非洲的许多未描述的伊德里斯，如果有关联，则表明该物种可能在印度洋周围分布。此外，我们还将讨论Idris的构成和关系，以及Baeini中机翼缩小的性质。