A grayish mottled pattern on the wings of the Saddled Prominent help camouflage this moth on the trunks of a variety of deciduous trees.
The gray-green hues of some individuals, or the brown-gray shades of others on the hairy wings of the Saddled Prominent allow it to better blend in with its forest habitat. Active throughout the summer, up to two broods can be produced which can stress host trees.
Adult Saddled Prominents are first active in late spring/early summer when they immediately get to work on reproducing. They are nocturnal and egg-laying is done at night. Females can lay hundreds of fertilized eggs on the higher leaves of maple, oak, sumac, witchhazel, and apple trees. Caterpillars are fleshy and green or yellow with brown markings at the middle of the body, where one would see the saddle on a horse. These hungry caterpillars can defoliate a tree, leaving only the skeletons of leaves behind. Fortunately, despite the large number of mouths, many trees can withstand the loss though it may have an affect on sap production, a concern for maple syrup harvesters. After one to three years, local birds and other insects eat them and wasps parasitize them, creating a biological control that stems outright devastation.
Scientific Name: Heterocampa guttivitta
Butterfly or Moth
Size (Adult; Length): 23mm to 25mm (0.90in to 0.98in)
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Butterfly and Moth Anatomy
Antennae: Butterflies and Moths have a pair of antennae on the head used as sensors.
Head: The head is home to the insect's eyes, antennae, and proboscis.
Thorax: Home to the three pairs of legs as well as vital internal organs.
Abdomen: Contains vital internal organs such as the heart(s) and reproduction facilities.
Forewing: The upper, forward wing pair used for flying.
Hindwing: The lower, rearward wing pair used for flying.
NOTE: Butterflies and Moths are part of the Lepidopteran order as they share many similarities.