 | This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: Need a list of all species. (July 2022) |
| Tetrastichus | |
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| Tetrastichus planipennisi | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Eulophidae |
| Subfamily: | Tetrastichinae |
| Genus: | Tetrastichus Haliday, 1844 |
| Type species | |
| Tetrastichus miser, (originally designated as Cirrospilus attalus Walker, 1839) (Nees, 1834)
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| Species | |
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450+ species | |
| Synonyms | |
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Tetrastichus is a genus of hymenopteran insects of the family Eulophidae.
Tetrastichus planipennisi is a parasitoid of the emerald ash borer, a wood boring insect native to Asia which is an invasive species in North America. T. planipennisi is being evaluated as a biological control agent.