英语语法分析

The species, which is attributed to Gasterophilus, Gasterophilidae, Diptera according to the collected larva specimen, has been unrecorded in national literatures by now.

根据采集到的该种幼虫标本鉴定，该病原为双翅目、胃蝇科、胃蝇属种类，其特征在目前国内文献中未见记载。