cephenemyia apicata
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1975 ◽  
Vol 53 (7) ◽  
pp. 977-992 ◽  
Author(s):  
John R. Anderson

Larviposition behavior by Cephenemyia jellisoni involved a covert, inaudible hovering–"stalking" flight with attacking females usually remaining undetected until the moment of larviposition. In contrast. C. apicata landed on or near deer and became objects of attraction eliciting the curiosity of deer and causing them to orient to the fly in a position vulnerable to larviposition. The final phase of attack by C. jellisoni was initiated from a blind spot in front of. and below, the deer's nose, whereas visible C. apicata attacked from perched positions. After flies squirted larvae into deer's nostrils, deer jerked back their heads and sneezed as they simultaneously shook their heads and lowered their noses to the ground. A series of other post-larviposition behavioral responses of deer are described, as is their characteristic fly alert position and behavior. Encounters with C. apicata and C. jellisoni females that larviposited in their nostrils led to the recognition of these flies by educated deer and to their responding with anti-nose-bot-fly behavior resulting in their evading females attempting to tarviposit. Deer did not respond to flies presented for them to smell, but when tethered C. jellisoni hovered in view of experienced deer, deer exhibited the characteristic evasive reactions provoked when wild flies were spotted. Deer also responded similarly when Cephenemyia larvae were "finger inoculated" into their nostrils.


1964 ◽  
Vol 96 (3) ◽  
pp. 579-585 ◽  
Author(s):  
E. P. Catts

AbstractAggregating habits and seasonal occurrence of two species of deer nasal bot flies (Cephenemyia apicata and C. jellisoni) were studied through two seasons in California. Males aggregated at upper hillside and summit stands of Castanopsis sp. and Quercus sp. rising 2-10 feet above the top of surrounding scrub vegetation. Activity began at 20 °C. air temperature and ended soon after mid-day.Intraspecific and intrageneric chasing by male flies is described and the spacing of flies at different sites is discussed. C. jellisoni males appeared to dominate males of C. apicata at these sites or, when both were present, their activities were stratified. Marked males tended to remain at a specific site throughout the day's activity.In one observed mating, the flying pair united above the aggregation site and dropped in tandem to the vegetation below. A comparative description of the internal reproductive system of female C. apicata is given.


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