Rhagoletis juglandis

Description

Typical of Rhagoletis larvae with the following specific characteristics for the 3rd instar:

Body. Medium-sized; body length ~8mm.

Head. Stomal region: Large amount of sclerotized stomal guards (exact amount unclear). Oral ridges present; number of oral ridges ~7. Accessory absent. 

Anterior spiracles. Anterior spiracles convex to flat. Number of anterior spiracular tubules ~11.

Spinules and creeping welts. Dorsal spinules only on segment T1.

Posterior spiracles. Slits ~4x longer than wide. Dorsal spiracular processes with numerous trunks arising from an elongate base. Number of dorsal spiracular processes 15–17. Number of ventral spiracular processes 15–17. Number of lateral spiracular processes 7–13.

Host plants

Famlly	Genus
Juglandaceae	Juglans

Part of plant attacked: fruit.

Biogeographic region and distribution

Nearctic

USA (Utah, Arizona, New Mexico), Mexico (Durango).

Adult taxonomy

Rhagoletis juglandis Cresson
Rhagoletis juglandis Cresson 1920: 65.—USA. Arizona: Cochise Co., Huachuca Mts., Carr Canyon. HT ♂ ANSP.
 

References

Carroll, L. E., A. L. Norrbom, M. J. Dallwitz, and F. C. Thompson. 2004 onwards. Pest fruit flies of the world – larvae. Version: 8th December 2006. http://delta-intkey.com.

White, I. M., and M. M. Elson-Harris. 1992. Fruit flies of economic significance: their identification and bionomics. CAB International; Wallingford, UK. 601 p.