Abstract
The main differences betweenThecodiplosis brachyntera (Schwägrichen) andT. japonensis Uchida et Inouye in morphology, bionomics, host plants, ecology, population dynamics, distribution, parasites, economic importance and control methods are given in this paper. The area ofT. b. onPinus sylvestris is more than 10 times larger than that ofP. j. onP. densiflora andP. thunbergii. The flight period of adults and the length of the first instar larvae ofT. b. is about 4 times shorter than those ofT. j. Both species can be transferred (infestation) to otherPinus spp. Death ofPinus trees attacked byT. b. was never observed in Europe. The influence of air pollution may change this situation.T. japonensis caused death ofPinus trees. Thousands of hectares of forests had to be felled. Parasites and predators are important in controlling the population densities of both species, but in practice biological control was only used againstT. j. Studies of chemical contents of needles and larvae produced interesting data on both species.T. brachyntera has been studied for 150 years andT. japonensis for 50 years.
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Thecodiplosis brachyntera
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Skuhravý, V. On the differences betweenThecodiplosis brachyntera Schwäg. andThecodiplosis japonensis Uch. et in. (Diptera, Cecidomyiidae) on the genusPinus . Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 67, 156–161 (1994). https://doi.org/10.1007/BF01905775
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DOI: https://doi.org/10.1007/BF01905775