HymenopteraDiprionidae – Conifer Sawflies

Neodiprion rugifrons

This record describes Neodiprion rugifrons (species). Recorded family: Diprionidae. Recorded order: Hymenoptera.

Identification and Appearance

Neodiprion rugifrons - Neodiprion rugifrons
Contributed by Charley Eiseman; Additional contributions by Marci Hess

Full-grown larvae have orange-brown to bright orange heads with black eyespots. The prothorax is yellowish-green to light olive-green with dark markings. A dark lateral strip extends backward along each side from the prothorax to the 9th abdominal segment.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Hymenoptera (Ants, Bees, Wasps and Sawflies)
Family
Diprionidae (Conifer Sawflies)
Genus
Neodiprion

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

southern Canada and the Lake States

Seasonal Activity

Adults - May and June

Diet and Behavior

Diet: Jack pine

Life History

Overwinters in cocoons in the soil. Eggs are laid in 1-year-old or older needles. The larvae of the first generation feed in colonies on previous year's needles. The 2nd generation feeds on all-ages of foliage. 1-2 generations per year.

Additional species information

Species notes from the sources

Etymology: Author: Middleton, 1933

About Flies: the wider group

Order-level background for Hymenoptera, the group containing Neodiprion rugifrons. Species-specific details appear above.

Group overview

Hymenoptera includes over 150,000 described species of ants, bees, wasps, and sawflies. Earth harbors approximately 20 quadrillion (20×10^15) ants, with a combined biomass of ~12 megatons of dry carbon - exceeding the combined biomass of all wild birds and mammals (PNAS, 2022).

Ecological role of the group

About 35% of the world's food crops depend on animal pollinators. The chocolate industry, valued at over $100 billion, depends on pollinating flies and midges. Ants are the dominant soil engineers in most terrestrial ecosystems, turning more soil than earthworms in many habitats.

Economic and practical significance of the group

Pollinators contribute $235-577 billion worth of annual global food production (FAO). In the U.S., bee pollination alone benefits crops valued at $18 billion annually, and honey bees are responsible for $5.4 billion in agricultural productivity. Between April 2023-2024, 55.1% of managed honey bee colonies were lost. The U.S. bee population dropped from 5 million to 2.5 million.

Recorded sources for this group: FAO, USDA, EPA, PNAS (2022), US Fish & Wildlife Service. Imported estimates may describe particular regions or reporting periods.

Explore Hymenoptera families and species →

Photos of Neodiprion rugifrons (3)

Neodiprion rugifrons - photo 1
Contributed by Charley Eiseman; Additional contributions by Marci Hess
Neodiprion rugifrons - photo 2
Contributed by Charley Eiseman; Additional contributions by Marci Hess
Neodiprion rugifrons - photo 3
Contributed by Charley Eiseman; Additional contributions by Marci Hess

Photo credits: Contributed by Charley Eiseman; Additional contributions by Marci Hess

Frequently Asked Questions About Neodiprion rugifrons

What is Neodiprion rugifrons?

Neodiprion rugifrons is a species in the family Diprionidae, within the order Hymenoptera.

How do you identify Neodiprion rugifrons?

Full-grown larvae have orange-brown to bright orange heads with black eyespots. The prothorax is yellowish-green to light olive-green with dark markings. A dark lateral strip extends backward along each side from the prothorax to the 9th abdominal segment.

Where is Neodiprion rugifrons found?

Range: southern Canada and the Lake States

What does Neodiprion rugifrons eat?

The diet of the Neodiprion rugifrons includes Jack pine.

When is Neodiprion rugifrons active?

Neodiprion rugifrons: seasonal activity - Adults - May and June.

What is the life cycle of a Neodiprion rugifrons?

Overwinters in cocoons in the soil. Eggs are laid in 1-year-old or older needles. The larvae of the first generation feed in colonies on previous year's needles. The 2nd generation feeds on all-ages of foliage. 1-2 generations per year.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Charley Eiseman; Additional contributions by Marci Hess. Contributors retain copyright over their individual contributions.