Milkweed Bug vs Snailcase Bagworm
Side-by-side species comparison
| Attribute | Milkweed Bug | Snailcase Bagworm |
|---|---|---|
| Scientific Name | Oncopeltus fasciatus | Apterona helicoidella |
| Order | Hemiptera | Lepidoptera |
| Family | Lygaeidae | Psychidae |
| Size | 10-13 mm | Case about 5-6 mm; male wingspan 10 mm |
| Habitat | Grasslands | Grasslands |
| Diet | Seed Feeders | Omnivores |
| Regions | North America, Central America | Europe, Asia Minor, introduced to North America |
| Conservation | Least Concern | Least Concern |
Milkweed Bug
A medium-sized bug with bold orange-red and black warning coloration. It feeds on milkweed seeds and sequesters toxic cardiac glycosides for its own defense.
Did You Know?
This bug has become a widely used laboratory model organism because it is easy to rear, has no diapause requirement, and displays clear warning coloration.
Snailcase Bagworm
A tiny bagworm moth whose larva builds a coiled, snail-shell-shaped case from silk and sand grains. It reproduces entirely by parthenogenesis in most of its range.
Did You Know?
Males are almost never found; most populations consist entirely of females reproducing without mating.