Eurydema Ventralis on:
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''Eurydema ventralis'' is a shield bug of the family
Adults overwinter, reappear in spring and attack the cabbages. In the first half of April mating begins, followed by the laying of eggs. At mid-May the nymphs hatch, reaching the maturity in June.
In summer, females lay the eggs of the second generation, this time both on crucifers and on other plants (rose, alfalfa). In July the eggs hatch and the larvae become mature in August. Adults of the second generation return on crucifers and remain there until September. At the first cold days of the autumn the adults take refuge in winter shelters.
''BioLib''
''Fauna Europaea''
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Strachiini Insects described in 1846 Hemiptera of Europe Taxa named by Friedrich August Rudolph Kolenati {{pentatomidae-stub
Pentatomidae
Pentatomidae is a family of insects belonging to the order Hemiptera, generally called shield bugs or stink bugs. Pentatomidae is the largest family in the superfamily Pentatomoidea, and contains around 900 genera and over 4700 species.Robert G ...
, subfamily Pentatominae
Pentatominae is a subfamily of Pentatomidae, a family of shield bugs. This subfamily is the largest one within the Pentatomidae, having 4937 species classified in 938 genera. Species in this subfamily are phytophages and several of them are consid ...
. The species was first described by Friedrich August Rudolph Kolenati
Friedrich August Rudolph Kolenati (12 September 1812 – 17 July 1864) was a Czechoslovakia, Czech-Ethnic Germans, German botanist and zoologist active primarily in Prague and Brno.
Kolenati was born in Prague where he completed elementary school ...
in 1846.
Description
''Eurydema ventralis'' has a length of about . It typically has a two-tone coloration, yellow or red with black markings. The body is flattened, the head is rounded and the cheeks are sinuous with narrow edges. When the adults come out from the lastinstar
An instar (, from the Latin '' īnstar'', "form", "likeness") is a developmental stage of arthropods, such as insects, between each moult (''ecdysis''), until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or ass ...
they are white or ivory with black spots. They slowly reach the final red coloration, at first becoming yellow, then orange and finally red. The specimens completely white and black are immature.
This species can damage the cultivations of crucifers (family Brassicaceae
Brassicaceae () or (the older) Cruciferae () is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The le ...
) and sometimes also of potatoes and cereals.
Life cycle
Adults overwinter, reappear in spring and attack the cabbages. In the first half of April mating begins, followed by the laying of eggs. At mid-May the nymphs hatch, reaching the maturity in June.
In summer, females lay the eggs of the second generation, this time both on crucifers and on other plants (rose, alfalfa). In July the eggs hatch and the larvae become mature in August. Adults of the second generation return on crucifers and remain there until September. At the first cold days of the autumn the adults take refuge in winter shelters.
Distribution
This species can be found in most of Europe.
References
* Rider D.A., 2004 - Family Pentatomidae - Catalogue of the Heteroptera of the Palaearctic Region * Antonio Servadei, Sergio Zangheri, Luigi Masutti. Entomologia generale ed applicata. Padova, CEDAM, 1972. Pagg. 325-326External links
''BioLib''
''Fauna Europaea''
EOL
Meloidae
Linnea.it
Strachiini Insects described in 1846 Hemiptera of Europe Taxa named by Friedrich August Rudolph Kolenati {{pentatomidae-stub