Mating territories and mates

As far as we have been able to determine, there exists only one convincing published example among insects of chemical repulsion of males by an intra-sexual occupying a mating territory. 

By far the majority of known cases in which insects respond to chemical cues to avoid resource overcrowding involve reaction to pheromones or plant components emanating from occupied oviposition sites. 

There are several other phytophagous insect groups in which the existence of oviposition-deterring pheromone deposited by adults or emanating from larvae has been demonstrated the agromyzid fly, Agromyza frontella (Quiring, 

1982) two species of anthomyiid flies, Hylemya spp. (Zimmerman, 1979) and Atherigona soccata (Raina, 1981) five species of pyralid moths infesting grains, other stored products or maize, including the Mediterranean flour moth, E. kuehniella (Corbet, 1973), dried currant moth, E. cautella, cocoa moth, E. elutella, and Indian meal moth, P. interpunctella (Mudd and Corbet, 

and European corn borer, Ostrinia nubilalis (Dittrick et al., 1983) the noctuid moths H. bicruris (Brantjes, 1976), and corn earworm, Heliothis zea (Gross and Jones, 1977) cabbage butterflies Pieris brassicae and P. rapae (Rothschild and Schoonhoven, 1977 Behan and Schoonhoven, 1978 Den Otter et al., 1980 Schoonhoven et al., 1981) and the monarch butterfly, Danausplexippus (Dixon et al., 1978). Indirect evidence suggests such pheromone may also exist in the cotton boll weevil, Anthonomus grandis (McKibben etal., 1982). 

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