Four species of Spalangia Latreille (Hymenoptera: Pteromalidae), S. cameroni Perkins, S. endius Walker, S. nigroaenea Curtis, and S. nigra Latreille, were collected from dairy farms located in Fukuoka, Japan. The former three species were reared from pupae of Stomoxys calcitrans (Linnaeus) (Diptera: Muscidae) and the latter was reared from pupae of Chrysomya pinguis (Walker) (Diptera: Calliphoridae). This is a new distributional record for S. cameroni from Japan. Chrysomya pinguis is newly recorded as the host insect of S. nigra. A key to Japanese species of Spalangia was provided for further biological studies. Spalangia species have been known as biological control agents against St. calcitrans in Europe and North America. Thus, the detection of these parasitoids provides opportunities for biological control as an additional control measure against St. calcitrans in Japan.

中文翻译：

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检测攻击 Stomoxys calcitrans（双翅目：Muscidae）的 Spalangia（膜翅目：Pteromalidae）及其在日本养牛业中的潜在意义

从位于日本福冈的奶牛场收集了四种 Spalangia Latreille（膜翅目：Pteromalidae）、S.cameroni Perkins、S.endius Walker、S.nigroaenea Curtis 和 S. nigra Latreille。前三个物种是从 Stomoxys calcitrans (Linnaeus) (双翅目: Muscidae) 的蛹中饲养的, 后者是从 Chrysomya pinguis (Walker) (双翅目: Calliphoridae) 的蛹中饲养的。这是日本山茶花的新分布记录。Chrysomya pinguis 被新记录为 S. nigra 的寄主昆虫。为进一步的生物学研究提供了日本种 Spalangia 的钥匙。在欧洲和北美，Spalangia 物种已被称为针对 St. calcitrans 的生物防治剂。因此，