Description of the Immature Stages of Paracantha gentilis (Diptera: Tephritidae)

David Headrick, Richard D. Goeden
1990 Annals of the Entomological Society of America  
Descriptions are provided of the egg, larvae, and puparium of Paracantha gentilis Hering, a native, stenophagous tephritid which infests the capitula of thistles. Detailed examination of larvae led to the discovery of a median oral lobe between the mouth hooks. This is the first structure of this kind described for Tephritidae. Two sensory structures on the anterior lobes of P. gentilis also were discovered, the lateral sensory organ and the pit sensory organ. In comparing the anterior sensory
more » ... pparatus of P. gentilis larvae with those in Anthomyiidae, Calliphoridae, Drosophilidae, Muscidae, and Syrphidae, striking similarities were apparent. Photographs that illustrate the development of the spiracular system of the puparial stage are the first offered for a nonfrugivorous tephritid. KEY WORDS Insecta, mouth hooks, sensory organs, Cirsium THIS STUDY is an outgrowth of faunistic surveys
doi:10.1093/aesa/83.2.220 fatcat:4olih5o3wbcddhdzabkuxvhp5i