|Cuterebra arizonae, Rodent Botfly|
9-19-9 pima canyon, Catalinas, Pima Co, AZ
Jeff Boetner det.
'Females typically deposit eggs in the burrows and "runs" of rodent or rabbit hosts. A warm body passing by the eggs causes them to hatch almost instantly and the larvae glom onto the host. The larvae are subcutaneous (under the skin) parasites of the host. Their presence is easily detected as a tumor-like bulge, often in the throat or neck or flanks of the host. The larvae breathe by everting the anal spiracles out a hole (so they are oriented head-down inside the host). They feed on the flesh of the host, but only rarely does the host die as a result.' In some populations 80% of all rodents are parasitized. The drone of these big flies is louder than most insects' flying-sounds
|Brachylinga sp. Therevidae (Stiletto Flies)|
Related to Robberflies, Stiletto Flies are less well known. But in dry, sandy areas they are probably ecologically rather important. Their larvae live in sandy soils as arthropod-predators
|Trichopoda indivisa, (Feather-legged Flies), Tachinidae|
10-1-2012 Buenos Aires National Wildlife Preserve, Pima Co, AZ, USA
Small brightly-colored flies that frequent flowers. Sexes dimorphic (e.g. abdomen orange in males vs dark or dark-tipped in females). Calypters covered with yellow scales. Distinctive fringe on hind tibiae....
Life history of T. pennipes and T. plumipes in Swan & Papp
Mating may occur near nectar sources (P. Coin, pers. observation). Females hover over plants that attract their hosts (e.g., squash). Eggs are typically laid on underside of host. Only one larva per host will survive, though more than one egg may be laid on a given host. Newly hatched maggot bores into body of host and feeds on host's fluids for about two weeks. Eventually, it grows to almost the size of the host's body cavity. Maggot emerges at III instar, killing the host, and pupates in soil. Adult emerges in ~2 weeks. Second instar larva overwinters in the host's body.
Larval hosts are mostly true bugs (Heteroptera: Coreidae, Pentatomidae, Scutelleridae, Largidae), but also Dissosteira pictipennis (Acrididae), and a mantid (frm Bugguide.net info)
Nemomydas sp. - multiple Males and Female
Catalina State Park, Pima County, Arizona, USA
August 13, 2007
|Neorhynchocephalus sackenii, |
Nemestrinidae (Tangle-veined Flies)
Nemestrinidae (Tangle-veined Flies)
Doug Yanega det.
in Copper Canyon south of the Huachucas, Cochise Co, AZ, Aug 2014
I was In Copper Canyon last August with Arthur V. Evans searching for beetles for his next beetle book, but these flies distracted with their constant loud buzz. Their larvae are parasites of grasshoppers, but some spp. also use scarab beetles as hosts. Supposedly rare in NA, but certainly very common then and there.
|Odontoloxozus longicornis (Longhorn Cactus Fly)|
Picture Rocks, Pima Co, AZ, March
Larvae in demposing cacti, a typical desert insect
On mushrooms in Patagonia Creek Preserve (AZ, Santa Cruz Co) in October
|Hermetia illucens (Black Soldier Fly)|
Interesting: Very rarely, accidentally ingested larvae cause intestinal myiasis in humans and domestic animals.
|Cerotainiops abdominalis. The prey is a Harvester Ant (Pogonomyrmex)|
|Thecophora sp. Conopidae (Thick-headed Flies)|
|Clogmia albipunctata (Filter Fly)|
Originally mostly tropical, now found in human habitats in much of North America. Larvae feed in water with decaying organic matter -- tree holes, stagnant ponds, drains, etc.
Mt Lemmon, Catalinas, Pima Co, AZ, USA July 2014
A woodland species that induces galls on Asteraceae. I first thought it was a moth
|Flesh Fly (Sarcophagidae) on a dead dove.|