Nicrophorus defodiens

Nicrophorus defodiens can be distinguished from the similar N. orbicollis by its larger clutch size, producing roughly twice as many eggs (approximately 23.9 versus 12 in N. orbicollis). As with other Nicrophorus species, it likely displays the characteristic black body with orange or red markings on the elytra, though specific diagnostic color patterns for this species are not documented in the provided sources.

Found in the Mer Bleue Bog area and other boreal forest habitats. Has been observed breeding in the forest canopy, one of at least two burying beetle species with this capability.

North America: Canada (Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Northwest Territories, Ontario, Prince Edward Island, Quebec, Saskatchewan, Yukon Territory) and United States (Alaska, California, Colorado, Idaho, Massachusetts, Maine, Michigan, Minnesota, Montana, North Carolina, New Hampshire, New Jersey, Nevada, New York, Oregon, South Dakota, Tennessee, Vermont, Washington, Wisconsin, West Virginia, Wyoming).

Small vertebrate carcasses serve as the primary food source for larvae. Adults feed on carrion and regurgitate liquefied food to feed their young.

Breeds on small vertebrate carcasses. Females lay approximately 24 eggs in a chamber excavated near the buried carcass. Larvae hatch and feed on the preserved carcass, receiving parental care from both male and female adults. Developmental timing details are not specifically documented for this species.

Males emit pheromonal signals to attract mates. During mating, females frequently bite males. After copulation, males resume pheromone emission, but females actively obstruct males from attracting additional females, effectively imposing monogamy. Exhibits communal breeding on larger carcasses, forming multiple male-female associations. In communal groups, dominant and subordinate female hierarchies form, with subordinate females rarely observed on the carcass. Both sexes cooperate in burying carcasses, removing fur or feathers, and forming the carcass into a compact ball. Adults apply secretions containing antimicrobial compounds and immune molecules to preserve the carcass and suppress fungal and bacterial growth.

Functions as a carrion decomposer and nutrient recycler. Burying activity accelerates decomposition and returns nutrients to soil. Parental care behavior includes investment in social immunity through antimicrobial secretions that preserve carcasses for offspring.

• Nicrophorus orbicollisSimilar burying beetle species; N. defodiens produces approximately twice as many eggs (roughly 24 versus 12), providing a key reproductive distinction.
• Nicrophorus vespilloidesSympatric burying beetle species found in similar bog habitats; specific distinguishing features not documented in provided sources.

• burying beetle
• carrion beetle
• communal breeding
• social immunity
• parental care
• boreal forest
• forest canopy
• pheromone communication
• monogamy enforcement
• Nicrophorus
• Silphidae
• decomposer
• nutrient cycling
• North America
• Mannerheim 1846

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
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• A study of the ecology and reproductive biology of the carrion beetle assemblage in the Mer Bleue Bog area with specific reference to the habitat associations of Nicrophorus Vespilloides Herbst and N. Defodiens Mannerheim (Coleoptera: Silphidae).