Ecology of Insect Swarms. IV. Comparison of the Swarms of Two Closely Related Midges, Anarete johnsoni and A. sp. near johnsoni (Diptera: Cecidomyiidae)12
- 1 November 1963
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of the Entomological Society of America
- Vol. 56 (6) , 748-751
- https://doi.org/10.1093/aesa/56.6.748
Abstract
The swarming behavior of Anarete johnsoni Felt (Sp. 1) and Anarete sp. near johnsoni (Sp. 2) showed distinct differences, as follows, (a) Reactions to a white surface: Sp. 1 attracted to it, Sp. 2 repelled by it. (b) Hours of peak occurrence: Sp. 1 before 0900, Sp. 2 between 1000 and 1100. (c) Average size of swarms: Sp. 1, 160 midges per swarm; Sp. 2, 39 midges per swarm, (d) Distribution: Sp. 1 found at 5 of 9 sites with different types of ground covers and with different exposures; Sp. 2 found at all 9 sites, (e) Light preference: Sp. 1 at 280–420 f.c., Sp. 2 at 420–560 f.c. The two species also showed similarities: (a) They both preferred the temperature range of 70°–80° F., and (b) they showed synchronized fluctuations in seasonal abundance. These observations were made at Waseca, Minnesota, in July and August 1960.Keywords
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