Oncopeltus sanguineolentus
Blood-colored Milkweed Bug
Oncopeltus sanguineolentus, the blood-colored milkweed , is a in the Lygaeidae found in Central and North America. The belongs to the same as the well-studied (), but has received less scientific attention. Like , it is associated with milkweed plants and exhibits aposematic coloration warning of chemical defenses.
Pronunciation
How to pronounce Oncopeltus sanguineolentus: /ˌɒŋkəˈpɛltəs ˌsæŋɡwɪniˈɒləntəs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from the sympatric by coloration; O. sanguineolentus has more extensive red or blood-colored markings, while O. fasciatus displays bold orange and black banding. Specific diagnostic features require examination of specimens.
Images
Habitat
Associated with milkweed plants (Asclepias spp.), which serve as food source and oviposition site.
Distribution
Central America and North America; recorded from the United States and Mexico.
Diet
Seeds of milkweed plants; nymphs and use to penetrate seed pods, inject digestive , and consume liquefied contents.
Host Associations
- Asclepias - food plantSeeds consumed by nymphs and
Ecological Role
Member of Müllerian mimicry complex with other milkweed-feeding insects; sequesters cardiac glycosides from milkweed, making it distasteful to .
Similar Taxa
- Oncopeltus fasciatusSympatric with similar and ; distinguished by orange and black versus blood-red coloration
More Details
Taxonomic status
Listed as synonym of Oncopeltus sanguinolentus in some sources; nomenclatural resolution needed
Sources and further reading
- BugGuide
- GBIF taxonomy match
- iNaturalist taxon
- Catalogue of Life
- A Unique Connection and a Living Legacy | Bug Squad
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