Intermediate-winged aphids of the species Macrosiphum solanifolii were studied in an effort to determine the time of embryonic segregation of the sensoria and antennal color, and their relation to the determination of wings, ocelli, and wing muscle. Dark antennal color and increased sensoria of winged aphids are considered to be characters closely correlated in development; for in general, when there was a darkening of antennae, there was a corresponding increase in the number of sensoria. In practically all cases increased sensoria were correlated with a relatively large amount of nondegenerate wing muscle. It is concluded that embryonic determination of dark antennal color and increased sensoria takes place in a comparatively short period of time as compared with that of wings, ocelli, and wing muscle. The data make it seem probable that while dark antennal color and extra sensoria, characteristic of winged aphid, arc determined after wings, ocelli, and wing muscle, they complete their segregation before that of the latter group.
Proceedings of the Iowa Academy of Science
©1939 Iowa Academy of Science, Inc.
Stiles, Karl A.
"The Time of Embryonic Determination of Sensoria and Antennal Color, and Their Relation to the Determination of Wings, Ocelli and Wing Muscles in Aphids,"
Proceedings of the Iowa Academy of Science, 46(1), 456-457.
Available at: https://scholarworks.uni.edu/pias/vol46/iss1/142