Citation

Wolda H (1967) Reproductive isolation between two closely related species of the Queensland fruit fly Dracus tryoni (Frogg) and D. neohumeralis Hardy (Diptera : Tephritidae) II. Genetic variation in humeral callus pattern in each species as compared with laboratory-bred hybrids. Australian Journal of Zoology 15, 515-539.

https://doi.org/10.1071/ZO9670515