Leucophora obtusa
This record describes Leucophora obtusa (species). Recorded family: Anthomyiidae. Recorded order: Diptera.
Identification and Appearance

One of several almost identical species so great care is needed with identification. If detailed examination has not taken place it should be recorded as Leucophora sp. The genus has a characteristically wide parafacial and gena (the area in front of and below the eyes). The eyes, even in males, are well separated. The mid tibia always has an ad seta. Leucophora obtusa is the most recorded species in the genus. It is a hairy species and the abdominal sternites have long erect hairs. The hind femur also has numerous long fine hairs beneath. The lower margin of the gena has several rows of upwardly directed setae. The lateral margins of the scutellum have several rows of setulae Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters. Can be found near the nests of Andrena bees. Leucophora obtusa is known to parisitise the larvae of Andrena flavipes. Sometimes seen sunning on trunks and branches. From as early as February through to late May. Females will actively follow the host bee to its nest burrow, where the larvae are parasitic on the host’s brood. Seems to be widespread in the southern half of Britain, but status is difficult to assess due to problems of identification.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera (Flies)
- Superfamily
- Muscoidea
- Family
- Anthomyiidae (Root-Maggot Flies)
- Subfamily
- Anthomyiinae
- Tribe
- Hylemyini
- Genus
- Leucophora
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
Can be found near the nests of Andrena bees. Leucophora obtusa is known to parisitise the larvae of Andrena flavipes. Sometimes seen sunning on trunks and branches.
Seasonal Activity
From as early as February through to late May.
Diet and Behavior
Life History
Females will actively follow the host bee to its nest burrow, where the larvae are parasitic on the host’s brood.
Additional species information
Recorded status
Seems to be widespread in the southern half of Britain, but status is difficult to assess due to problems of identification.
About Flies: the wider group
Order-level background for Diptera, the group containing Leucophora obtusa. Species-specific details appear above.
Group overview
Diptera includes over 150,000 described species of flies, mosquitoes, and midges. Mosquitoes are the deadliest animal on Earth (CDC). Malaria alone causes ~249 million cases and over 608,000 deaths annually, mostly children under 5 (WHO). Vector-borne diseases account for over 17% of all infectious diseases, causing 700,000+ deaths per year.
Ecological role of the group
Despite their disease impact, flies are critical decomposers and pollinators. Hoverflies alone pollinate hundreds of crop and wildflower species. Flies are also the primary food source for many birds, bats, and fish. Forensic entomology relies heavily on fly species for crime scene analysis.
Economic and practical significance of the group
In the U.S., vector-borne disease cases tripled between 2004-2016, with over 640,000 cases reported in that period (CDC). Tickborne diseases doubled from 22,000 to 48,000 annual reports. Globally, mosquito-borne diseases cost billions in healthcare and lost productivity.
Recorded sources for this group: WHO, CDC, PNAS. Imported estimates may describe particular regions or reporting periods.
Frequently Asked Questions About Leucophora obtusa
What is Leucophora obtusa?
Leucophora obtusa is a species in the family Anthomyiidae, within the order Diptera.
Where is Leucophora obtusa found?
Habitat: Can be found near the nests of Andrena bees. Leucophora obtusa is known to parisitise the larvae of Andrena flavipes. Sometimes seen sunning on trunks and branches.
When is Leucophora obtusa active?
Leucophora obtusa: seasonal activity - From as early as February through to late May..
What is the life cycle of a Leucophora obtusa?
Females will actively follow the host bee to its nest burrow, where the larvae are parasitic on the host’s brood.
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