Softly colored, yet clearly lined Yellow Slant-line Moths flourish in an expansive array of habitats and climates.
The rich, buttery color of the Yellow Slant-line helps show off the clean lines and geometric edges of its wings. A dark brown line crosses each wing at a slight angle, from the upper wing tip to the middle area near the body. In secondary broods that occur later in the summer, the smaller hindwings continue that forewing line across the wingspan with a lighter brown line. A tiny black dot marks the upper, outer part of each forewing. Small brown freckles may cover all, part, or none of the wings. They are well-adapted to a variety of ecosystems and can be found on the eastern part of the continent with some northern populations venturing as far west as Alberta.
Camouflaged as small, short twigs, the Yellow Slant-line caterpillar hides among the leaves of its host plant. Its mottled brown body is slender, and it stiffens as the body extends off the branch at an angle naturally seen on trees. This combination of color and behavior means they are often overlooked by birds and other predators scouting for a meal. Yellow Slant-line larvae feed on the alder, willow, sumac, and chestnut trees. Two broods are produced each year.
Scientific Name: Tetracis crocallata
Butterfly or Moth
Size (Adult; Length): 25mm to 45mm (0.98in to 1.76in)
Colors: yellow, brown
Descriptors: line, stripe, band, dot on wing, pointed edges, flying
Note: An insect's reach is not limited by lines drawn on a map and therefore species may appear in areas, regions and/or states beyond those listed above as they are driven by environmental factors (such as climate change), available food supplies and mating patterns. Grayed-out selections indicate that the subject in question has not been reported in that particular territory. U.S. states and Canadian provinces / territories are clickable to their respective bug listings.
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.