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South American Grain Stem Sawfly

Cephus fumipennis

About South American Grain Stem Sawfly

A slender black stem sawfly with smoky wings and yellow abdominal bands. It attacks cereal grain stems in parts of Europe and Asia.

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Did You Know?

Like other cephid stem borers, the larva constructs a silken cocoon inside the hollowed-out stem base where it overwinters before pupating in spring.

How to Identify South American Grain Stem Sawfly

South American Grain Stem Sawfly (Cephus fumipennis) belongs to the order Hymenoptera, family Cephidae. Adults typically measure 7-10 mm.

South American Grain Stem Sawfly Habitat

South American Grain Stem Sawfly is found in farmland habitats, particularly across Europe, Central Asia. This species has adapted to thrive in its preferred environment, where it can find suitable food sources and shelter.

South American Grain Stem Sawfly Diet and Feeding

South American Grain Stem Sawfly feeds on seeds and grains. Seed-feeding insects can influence plant populations by consuming seeds, and some play a role in seed dispersal.

Where Is South American Grain Stem Sawfly Found?

South American Grain Stem Sawfly can be found in Europe, Central Asia, where it inhabits farmland environments. Its distribution is influenced by climate, food availability, and habitat suitability.

Distribution Map

Where South American Grain Stem Sawfly can be found

Is South American Grain Stem Sawfly Dangerous?

South American Grain Stem Sawfly belongs to the order Hymenoptera, which includes many stinging insects. While not typically aggressive, it may sting if threatened or handled. Stings can cause pain and swelling, and in rare cases may trigger allergic reactions in sensitive individuals.

South American Grain Stem Sawfly Role in Nature

South American Grain Stem Sawfly is part of the food web as a primary consumer, feeding on plant material. It serves as an important food source for birds, bats, amphibians, and other insectivores, connecting plant energy to higher trophic levels.

Seasonal Activity

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Peak activity Moderate Low / dormant

Frequently Asked Questions About South American Grain Stem Sawfly

What does South American Grain Stem Sawfly look like?

The South American Grain Stem Sawfly typically measures 7-10 mm.

Where is South American Grain Stem Sawfly found?

The South American Grain Stem Sawfly is found in Europe, Central Asia and typically inhabits farmland environments.

What does South American Grain Stem Sawfly eat?

The South American Grain Stem Sawfly feeds on seeds and grains.

Is South American Grain Stem Sawfly dangerous to humans?

The South American Grain Stem Sawfly belongs to the order Hymenoptera, which includes stinging insects. While not typically aggressive, it may sting if threatened or handled.

What is an interesting fact about South American Grain Stem Sawfly?

Like other cephid stem borers, the larva constructs a silken cocoon inside the hollowed-out stem base where it overwinters before pupating in spring.

Cite This Page

APA:
InsectDiscover. (2026). South American Grain Stem Sawfly (Cephus fumipennis). Retrieved from https://insectdiscover.com/insect/south-american-grain-stem-sawfly

MLA:
"South American Grain Stem Sawfly." InsectDiscover, https://insectdiscover.com/insect/south-american-grain-stem-sawfly.