Necrophagous
Guides
Compsomyiops
Compsomyiops is a genus of blowflies (Diptera: Calliphoridae) established by Townsend in 1918. Members are necrophagous and serve as important forensic indicators for postmortem interval estimation. The genus has been documented as a phoretic host for Myianoetus mites (Acari: Histiostomatidae), representing a novel dispersal association for these mites. At least two species are recognized: C. fulvicrura in South America and C. wheeleri in North America.
Cynomya
dog-fly
Cynomya is a genus of blow flies (family Calliphoridae) commonly known as 'dog-flies' from the Ancient Greek κυνόμυια. Species in this genus are large, conspicuous flies of forensic interest, primarily distributed across the Palaearctic Region with some overlap in Alaska and the Russian Far East. The genus includes species such as C. mortuorum and C. cadaverina, which are associated with carrion and occasionally recorded as agents of myiasis. Unlike many calliphorids, Cynomya species are not strongly synanthropic and are rarely abundant in nature.
Dermestes frischii
Fringed Larder Beetle
Dermestes frischii is a hide beetle in the family Dermestidae, 6–9.5 mm long, black to dark brown with yellowish-white hairs on the pronotum sides. It is a significant pest of stored animal products including dried meat, fish, cheese, fur, and leather, and also damages wood, cork, and plaster when seeking pupation sites. The species is widely used in forensic entomology to estimate post-mortem intervals, particularly for corpses in hot, dry conditions where it colonizes remains during advanced decay stages. Males are distinguished from females by a tuft of black-brown hairs on the fourth abdominal sternite.
Fletcherimyia
Fletcherimyia is a genus of flesh flies in the family Sarcophagidae, established by Townsend in 1917. The genus belongs to the subfamily Sarcophaginae and is part of the diverse assemblage of necrophagous and parasitoid flies within this family. Very few observations exist in public databases, with records limited to the United States.
Lucilia eximia
green bottle fly
Lucilia eximia is a green bottle fly in the family Calliphoridae, distributed throughout the Neotropics from northern Mexico to southern South America. The species is a significant forensic indicator used to estimate minimum postmortem intervals, with well-documented intra-puparial development stages and thermal accumulation requirements. Laboratory studies indicate adults require both sugar and protein sources for optimal longevity, with water deprivation severely reducing survival. The species colonizes animal remains in urban environments exposed to sunlight.
Lucilia sericata
common green bottle fly, green bottle fly, blow fly
Lucilia sericata is a blow fly in family Calliphoridae, widely distributed across most temperate regions worldwide. Adults display brilliant metallic blue-green or golden coloration and are frequently among the first insects to arrive at carrion. The species has significant forensic importance due to predictable developmental rates used to estimate postmortem intervals. Larvae are also employed in maggot debridement therapy for cleaning necrotic wounds. The species exhibits temperature-driven seasonal activity, preferring warmer summer months.
Necrodes
Necrodes is a genus of carrion beetles in the family Silphidae (or Staphylinidae in some classifications), with at least four described species. These beetles are dominant decomposers of large vertebrate carrion in terrestrial habitats, where they compete with blow flies through mixed competition involving both exploitative and interference effects. They exhibit high dispersal ability, with individuals documented traveling over 30 km, and form massive larval aggregations that generate heat through thermogenesis. The genus has significant forensic importance, particularly N. littoralis, which is used as a bio-indicator for estimating post-mortem intervals.
Oiceoptoma
Oiceoptoma is a genus of carrion beetles in the family Silphidae, comprising approximately ten described species distributed across the Holarctic region. These beetles are necrophagous, specializing in the consumption of vertebrate carcasses. The genus includes species of forensic importance due to their predictable habitat associations and seasonal activity patterns. Oiceoptoma noveboracense, the margined carrion beetle, is among the most studied species and serves as a model for understanding carrion beetle ecology in North America.
Oiceoptoma inaequale
Ridged Carrion Beetle
Oiceoptoma inaequale, commonly known as the ridged carrion beetle, is a North American species of carrion beetle in the family Silphidae. It is one of several Oiceoptoma species that specialize in consuming decaying animal matter. The species has been documented breeding on snake carcasses and participates in carcass-based food webs alongside blow flies and other necrophagous insects. Like related species, it likely contributes to nutrient cycling through the decomposition of vertebrate remains.
Phormia regina
Black Blow Fly, Black Blowfly
Phormia regina, commonly known as the black blow fly, is a forensically important necrophagous species in the family Calliphoridae. It is widely distributed across the Holarctic region and is considered one of the most important forensic indicator species in the United States for estimating postmortem intervals. The species exhibits temperature-dependent development with a biological minimum between 10.0–12.5°C. Adults are attracted to decomposing tissue and carrion for oviposition. P. regina is primarily active during cooler seasons, earning it the designation of a "cold weather fly" that moves northward as temperatures increase.
Protophormia terraenovae
northern blowfly, blue-bottle fly, blue-assed fly, blackbottle
Protophormia terraenovae is a large, metallic blue-green blowfly with a Holarctic distribution. It is the most cold-tolerant calliphorid species, occurring from the Arctic to temperate regions. The species is economically significant as a cause of myiasis in livestock and valuable in maggot debridement therapy due to its selective consumption of necrotic tissue and antibiotic secretions. Its temperature-dependent development makes it a key forensic indicator for post-mortem interval estimation.
Sciodrepoides watsoni
Sciodrepoides watsoni is a small (~3 mm) brown necrophagous beetle in the family Leiodidae with Holarctic distribution. It is notable for its utility in forensic entomology, where thermal summation models for its development have been established to estimate post-mortem intervals. The species completes development through egg, three larval instars, and pupa to adult, with head capsule width serving as the most reliable character for instar determination. It has been successfully reared in laboratory conditions at temperatures between 15°C and 25°C.
Themira nigricornis
black scavenger fly
Themira nigricornis is a species of black scavenger fly in the family Sepsidae, first described by Meigen in 1826. It is native to Europe with records across western, central, eastern, and northern regions, and has been introduced to the Nearctic region including the United States. The species was first documented in south-eastern Europe in 2014 from an urban site in Bucharest, Romania, representing the southernmost European location for the species. Adults are necrophagous and have been observed on decomposing animal carcasses.