Rhagoletis suavis

Description

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

Body. Medium-sized; body length 8-10 mm.

Head. Cephalic lobes slightly developed.

Stomal organ: primary lobe rounded, protuberant; number of peg sensilla one; peg sensilla unbranched.

Stomal region: 2 large sclerotized stomal guards present. Oral ridges present; number of oral ridges 9–11; margins entire. Accessory plates absent. 

Anterior spiracles. Anterior spiracle appearing bilobed. Number of anterior spiracular tubules ~25; in a single uniform row.

Spinules and creeping welts. Dorsal spinules on segments T1, sometimes also on T2.

Caudal segment (A8) and anal lobes. Anal lobes very protuberant.

Posterior spiracles. Slits 4-4.5x longer than wide. Dorsal spiracular processes of medium length; with numerous trunks. Number of dorsal spiracular processes 5–9. Number of ventral spiracular processes 5–9. Number of lateral spiracular processes 5–8.

Host plants

Family	Genus
Juglandaceae	Juglans
Rosaceae	Prunus

Part of plant attacked: fruit.

Biogeographic region and distribution

Nearctic

USA (Minnesota east to Massachusetts, south to Arkansas and n. Florida; Oregon?).
 

Adult taxonomy

Rhagoletis suavis Loew
Trypeta suavis Loew1862: 75.—USA. “Middle States”. HT ♂ MCZ.

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.