Bug FAQCruciferous bug
Eurydema ventralis · Order: Hemiptera · Family: Pentatomidae
Source: Wikipedia
The cruciferous bug is about 10 mm long (0.39 in). Adults are yellow or red with black markings, while newly emerged bugs are white or ivory with black spots. It lives throughout most of Europe and feeds on cabbage family plants, potatoes and cereals, causing damage.
Source: Wikipedia
How to recognize it
Adults are usually yellow or red with black markings, and newly emerged bugs are white or ivory with black spots.
Source: Wikipedia
Size
It measures about 10 mm in length (0.39 in).
Source: Wikipedia
Is it a pest in the house?
It can damage cultivated crucifers, potatoes and cereals.
Source: Wikipedia
Where it lives
It can be found across most of Europe.
Source: Wikipedia
What it eats
It feeds on and damages cruciferous plants and can also harm potatoes and cereals.
Source: Wikipedia
Life cycle
Adults overwinter, become active in spring and attack cabbages; in summer females lay a second generation of eggs on crucifers and other plants such as rose and alfalfa.
Source: Wikipedia
When you see it
Mating and egg-laying begin in the first half of April. When the first cold days of autumn arrive, adults seek refuge in winter shelters.
Source: Wikipedia
Where it comes from
Its range includes most of Europe.
Source: Wikipedia
More photos
Questions people ask
What plants does the cruciferous bug damage?
It harms cruciferous crops, potatoes and cereals.
Source: Wikipedia
When does the bug become active in the garden?
Adults emerge in spring after overwintering and start mating and laying eggs in early April.
Source: Wikipedia
What does the adult bug look like?
Adults are yellow or red with black markings; newly emerged bugs are white or ivory with black spots.
Source: Wikipedia
Same family (Pentatomidae)
Brown Marmorated Stink BugHalyomorpha halysDamages trees, gardens or crops
Green Stink BugChinavia hilarisDamages trees, gardens or crops
Harlequin BugMurgantia histrionicaDamages trees, gardens or crops
Brown Stink BugEuschistus servusDamages trees, gardens or crops
Green Shield BugPalomena prasina
European Striped Shield BugGraphosoma italicumSources
- Wikipedia: https://en.wikipedia.org/wiki/Eurydema_ventralis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.