Istocheta aldrichi

Istocheta aldrichi
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Tachinidae
Subfamily:	Exoristinae
Tribe:	Blondeliini
Genus:	Istocheta
Species:	I. aldrichi
Binomial name
	Istocheta aldrichi; (Mesnil, 1953)
Synonyms
	Centeter cinerea Aldrich, 1923; Hyperecteina aldrichiMesnil, 1953;

Last updated September 22, 2025

Istocheta aldrichi is a species of fly in the family Tachinidae. Originally from Japan, it has been introduced in North America in 1922 as a biocontrol to combat the Japanese beetle ( Popillia japonica ). It is established in northeastern North America, including Canada and the USA. Larvae pupate inside the host beetle after hatching from an egg laid on the beetle's pronotum.^[3]^[4]^[5] Historical host range catalogues and recently collected crowdsourced data suggests that this fly is highly specific to Japanese beetle and probably does not attack other beetle species.^[6]

Distribution

Canada, United States, Japan, Korean Peninsula, Russia, Taiwan.

References

1 2 Mesnil, L.P. (1953). "Note synonymique". Bulletin de la Société Entomologique de France. 58: 50.
↑ Aldrich, J.M. (1923). "Two Asiatic muscoid flies parasitic on the so-called Japanese beetle" (PDF). Proceedings of the United States National Museum. 63 (6[ 2474]): 4 pp. doi:10.5479/si.00963801.63-2474.1 . Retrieved 10 April 2024.
↑ Gagnon, Marie-Eve; Giroux, Marjolaine (2019). "Records of the Japanese beetle and its parasitoid Istocheta aldrichi (Mesnil) (Diptera: Tachinidae) in Québec, Canada". The Tachinid Times (32). Retrieved 22 November 2022.
↑ O’Hara, James E.; Henderson, Shannon J.; Wood, D. Monty (5 March 2020). "Preliminary Checklist of the Tachinidae (Diptera) of the World" (PDF). Tachinidae Resources. Retrieved 10 April 2024.
↑ Makovetski, Victoria; Abram, Paul K. (2024) "Istocheta aldrichi (Mesnil) makes its biological control debut in British Columbia, Canada" The Tachinid Times (37) Retrieved 22 October 2024
↑ Makovetski, Victoria; Smith, Andrew B. T.; Abram, Paul K. (2025-06-01). "Crowdsourced online data as evidence of absence of non-target attack from the century-old introduction of Istocheta aldrichi for biological control of Popillia japonica in North America". Journal of Pest Science. 98 (3): 1451–1462. doi:10.1007/s10340-025-01891-5. ISSN 1612-4766.

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[Mesnil1953d-1] 1 2 Mesnil, L.P. (1953). "Note synonymique". Bulletin de la Société Entomologique de France. 58: 50.

[Aldrich1923b-2] Aldrich, J.M. (1923). "Two Asiatic muscoid flies parasitic on the so-called Japanese beetle" (PDF). Proceedings of the United States National Museum. 63 (6[ 2474]): 4 pp. doi:10.5479/si.00963801.63-2474.1 . Retrieved 10 April 2024.

[3] Gagnon, Marie-Eve; Giroux, Marjolaine (2019). "Records of the Japanese beetle and its parasitoid Istocheta aldrichi (Mesnil) (Diptera: Tachinidae) in Québec, Canada". The Tachinid Times (32). Retrieved 22 November 2022.

[OHara2020-4] O’Hara, James E.; Henderson, Shannon J.; Wood, D. Monty (5 March 2020). "Preliminary Checklist of the Tachinidae (Diptera) of the World" (PDF). Tachinidae Resources. Retrieved 10 April 2024.

[5] Makovetski, Victoria; Abram, Paul K. (2024) "Istocheta aldrichi (Mesnil) makes its biological control debut in British Columbia, Canada" The Tachinid Times (37) Retrieved 22 October 2024

[6] Makovetski, Victoria; Smith, Andrew B. T.; Abram, Paul K. (2025-06-01). "Crowdsourced online data as evidence of absence of non-target attack from the century-old introduction of Istocheta aldrichi for biological control of Popillia japonica in North America". Journal of Pest Science. 98 (3): 1451–1462. doi:10.1007/s10340-025-01891-5. ISSN 1612-4766.

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