Scale insect male
Title | Info |
---|---|
Common name | Scale Insect, Giant |
Scientific name | Margarodidae |
Taxonomic group | Homoptera |
Level | Family |
Source | Dan L. Perlman |
Selection and adaptations | Selection |
Selection | Sexual selection |
Behavior | Communication; Mating |
Organisms | Animals |
Animals | Insects |
Location | Monteverde,Puntarenas,Costa Rica,North America |
Giant scale insect male attracted to a pheromone-calling female, Costa Rica. This is an adult male giant scale insect, about 1/4 of an inch long (approximately 6 mm). He is winged and highly mobile, unlike the wingless and sedentary females who just sit, feed, call males, and mate. This male has been called in by a female in the late afternoon, presumably when she released one or more pheromones. Compare his appearance with that of the female; this is an outstanding example of sexual dimorphism and sexual selection. The male is brightly colored, winged, and mobile, and functions as a moving sack of sperm; the female need only stay put, feed, attract mates, and produce large numbers of eggs. Each sex is clearly optimized for its function.