Scantius aegyptius
(Linnaeus, 1758)
Mediterranean red bug
Scantius aegyptius, commonly known as the Mediterranean , is a ground-dwelling true in the Pyrrhocoridae. It is recognized by its striking red and black aposematic coloration. The is native to the Mediterranean region and has established in North America, particularly in California since 2009. It feeds primarily on seeds and seed pods of plants in the family Malvaceae.
Pronunciation
How to pronounce Scantius aegyptius: /ˈskæn.ti.əs iːˈdʒɪp.ti.əs/
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Identification
Distinguished from other Pyrrhocoridae by the specific pattern of two round black spots on a red background, combined with entirely black , , and legs. Nymphal stages show progressive darkening with , starting from solid red. Similar to Pyrrhocoris apterus (firebug), which has a different spot pattern and distribution; P. apterus has a black triangle at the base of the pronotum and more extensive black markings.
Images
Appearance
measure 7–9 mm in length. The , , and legs are black. The surface is bright red with two round black spots on the back. Nymphs are initially completely red and develop progressively larger dark spots with each .
Habitat
Ground-dwelling in areas with plants; associated with vegetation producing seeds and seed pods, particularly members of Malvaceae.
Distribution
Native to the Mediterranean region. in North America: first recorded in California in 2009, and by 2018 established in most Southern California counties and some Central California counties.
Diet
Feeds on seeds and seed pods of plants in the Malvaceae.
Host Associations
- Malvaceae - feeds on seeds and seed podspest of plant in this
Life Cycle
Nymphs undergo successive , with coloration changing from completely red to developing increasing dark spots until reaching coloration.
Behavior
Ground-dwelling; employs aposematic coloration as deterrence.
Human Relevance
Considered a pest of Malvaceae crops and ornamental plants. Recognized as an in California with expanding range since 2009.
Similar Taxa
- Pyrrhocoris apterusSimilar (Pyrrhocoridae) and general color scheme, but distinguished by black triangular marking at pronotum base and more extensive black patterning; native range differs
- Corizus hyoscyamiListed in related ; different within same
More Details
Invasion history
First detected in North America in Orange County, California in June 2009. Rapidly expanded throughout Southern California and into Central California within a decade.