Belgium, Wemmel : Ferruginous Bee-grabber (Sicus ferruginatus ) in copula #belgium #wemmel #insects #conopidae #sicusferruginatus #entomology #macrophotography

@markmccaughrean Fortunate, #Conopidae are spectacular flies. This season I've only stumbled upon one single specimen , so far.

https://www.inaturalist.org/observations/289742593

Genus Thecophora

Thecophora from Clerk Maxwell Road, Cambridge, Anglaterra, GB on June 14, 2025 at 11:48 AM by Albert Cardona

iNaturalist
Thecophora, a genus of conopid endoparasitic flies I had never seen, and with very few observations in the UK. May be expanding its range Northward?
http://www.inaturalist.org/observations/289742593
#iNaturalist #Conopidae #flies #entomology
Physocephala vittata

Physocephala vittata in August 2022 by Albert Cardona. Ménage a trois, the female’s head was moving as if munching. Eating one of the males? Males were ...

iNaturalist
Physocephala vittata, a conopid fly: endoparasitoid of adult bees and wasps. From Kolymvari, Crete, Greece.
https://www.inaturalist.org/observations/165098840
#iNaturalist #Diptera #Conopidae #entomology #insects
Physocephala vittata

Physocephala vittata from Crete, Kolymvari, Crete, GR on June 1, 2023 at 04:47 PM by Albert Cardona

iNaturalist

So what's an internal parasite maggot got to do, to successfully keep the host (a bee or wasp) alive until it's ready to pupate?

For one, hold all its poop in its gut. Otherwise it would intoxicate and kill its host.

So what's the first thing that the adult conopid fly must do upon hatching? My guess is: take a huge dump!

From:
"Larval development of Physocephala (Diptera, Conopidae) in the bumble bee Bombus morio (Hymenoptera, Apidae)", Abdalla et al. 2014
https://www.scielo.br/j/rbent/a/cxbqp6qb9mCPgg9BTT9Vx5w/?lang=en&format=pdf

As cited in Gibson's 2011 thesis.

#Conopidae #parasitoids #Diptera #entomology

Of my 12 observations this year of conopid* flies – mostly parasites of adult wasps – from US, UK and Croatia, none have collected a single comment or endorsement of the genus or species.

https://www.inaturalist.org/observations?d1=2024-01-01&d2=2024-10-08&taxon_id=61893&user_id=albertcardona

Did I get them right? Hopefully. Am I an expert? No. Just wish there was a guide out there on these fascinating flies. How they ever evolved into being is a fascinating thought to entertain.

* Conopids are also known as thick-headed flies, beegrabbers and waspgrabbers. For their life history, see: Gibson's thesis (2011), titled "The evolutionary biology of Conopidae (Diptera): a life history, molecular, morphological, systematic, and taxonomic approach" https://repository.library.carleton.ca/downloads/ks65hc719 which, among other details, has "the first ever key to world genera of Conopidae".

#iNaturalist #entomology #Conopidae #Diptera

Observations

Thick-headed Flies by Albert Cardona

iNaturalist
Physocephala vittata

Physocephala vittata in August 2022 by Albert Cardona. Ménage a trois, the female’s head was moving as if munching. Eating one of the males? Males were ...

iNaturalist

First unusual fly of the season:

Myopa vicaria, a conopid https://www.inaturalist.org/observations/204696300

The larvae of these flies are all internal parasites, "most of aculeate (stinging) Hymenoptera. Adult females aggressively intercept their hosts in flight to deposit eggs." https://en.wikipedia.org/wiki/Conopidae

#Conopidae #Diptera #iNaturalist #flies #parasites

Myopa vicaria

Myopa vicaria from Lammas Land, Cambridge, England, GB on March 30, 2024 at 11:34 AM by Albert Cardona

iNaturalist