I recently photographed that same Giant Robber Fly in Pasadena, Texas on a bayou. Now I feel terrible, there was one in my bathroom and I killed it, it sounds like a good bug – I was thinking it was a horsefly and it would bite me while I was showering. It’s really ominous looking. Otherwise, the picture should give you all the details you need. Our editors will review what you’ve submitted and determine whether to revise the article. Signature: IngridM. Females are larger than males. What is this? Robber fly, (family Asilidae), also called assassin fly, any of about 6,750 species of predatory insects, worldwide in distribution, in the fly order, Diptera. Most are dull in colour, and their stout, often hairy, bodies resemble those of bumble bees. It’s about the size of my insect finger, and it flies as well. Robber Fly, any of a family of medium to large predatory flies known for their fast flight, ... Robber flies are highly variable in size and body shape, ranging from 0.5 to 5.0 cm (0.2 to 2.0 in) in length. Let us know if you have suggestions to improve this article (requires login). Promachus hinei. The long legs are adapted to capture prey in flight and to hold it while eating. A few species of the genus Promachus are serious pests of apiaries because they feed on bees. Spotted on Aug 19, 2013 Submitted on Aug 21, 2013, National Geographic's Great Nature Project, Texas Master Naturalist Program - Nature Indentification. They are powerfully built, bristly flies with short, sharp, stout sucking mouthparts. Each species has a characteristic habitat—e.g., tree trunk, foliage, grass, low plant, dead twig, gravel, or beach sand. Thanks! Your email address will not be published. We believe it is a Giant Robber Fly in … After aerial chase, the large, buzzing Robber Fly overtakes its victim. Tweet; Description: Large robber flies with tiger-stripe pattern on abdomen. The long, cylindrical abdomen is cream colored with thick, black cross-bands. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Hi IngridM, This is one of the Giant Robber Flies in the genus Promachus. Test what you know about bugs with this quiz. Tweet; Description: This is a large robber fly which is approximately 3/4 - 1 1 /2 inches in length. The robber fly is a predator of almost all flying insects. Robber fly, (family Asilidae), any of about 6,750 species of predatory insects, worldwide in distribution, in the fly order, Diptera. Which of these insects includes a “slave-maker” that bites the head off the resident queen? The legs are reddish-brown and hairy. The wings are clear and brown, and do not reach the end of the abdomen when the fly is at rest. We don’t know how commonly they are sighted. Habitat: In the sand at the edge of Lake Lewisville. Robber flies range in length to almost 8 cm (3 inches), making them the largest of all flies. It often hangs from branches or objects near the ground, waiting to ambush passing prey. I found a dead one in my truck. Announcing our NEW encyclopedia for Kids! , horse flies, robber flies, bee flies), and Cyclorrhapha (e.g., flies that breed in vegetable or animal material, both living and dead).…. I ran across this insect while hiking in the hills around Boulder, CO. It’s about the size of my insect finger, and it flies as well. just wanted to say this website answered my question. No Comments Sign in to comment. Which beetle is also known as the tumblebug and can eat its weight in 24 hours? Reply. Promachus hinei. I recently photographed that same Giant Robber Fly in Pasadena, Texas on a bayou. Good to know what it really is because I’ve seen them in my garden a few times recently. This mimicry helps to protect it from predators while it perches in the open, waiting for its own prey. A global citizen science platform to discover, share and identify wildlife. Corrections? The abdomen has a black tip. Giant Robber Fly. During the day, it is possible to see a Robber Fly sitting on a fence, handrail, or garden box. Nature School For Teachers - Fall 2020 Launch! Robber flies range in length to almost 8 cm (3 inches), making them the largest of all flies. Females are larger than males. The name "robber flies" reflects their notoriously aggressive predatory habits; they feed mainly on other insects and they largely wait in ambush and catch their prey in flight. This fly has black eyes, a light colored "beard" on the face and a brown thorax. You will receive a new password via e-mail. Thanks! Dear Chris, This is a predatory Robber Fly, and you were astute to observe that it has a single pair of wings. Please enter your username or e-mail address. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Updates? Common Name: Robber Flies General Category: Predator Taxonomic Classification: Diptera: Asilidae Scientific Name: Many species Description Because of their large size and loud buzz when flying, these generalist predators are often confused with horse flies and other biting flies. Based on BugGuide data, there are Giant Robber Flies in Missouri. Required fields are marked *. It’s really ominous looking. With black-and-yellow markings, the Hornet robberfly looks like its namesake, but is harmless to us. Otherwise, the picture should give you all the details you need. Is it common to find the Giant Robber Fly in Missouri? Giant Robber Fly. You can also subscribe without commenting. Omissions? This fly has black eyes, a light colored "beard" on the face and a brown thorax. Location: Boulder, CO — Rocky Mountain foothills Spotted by gatorfellows. Between the large-faceted eyes is a moustache of bristles. For that reason, Robber Flies are efficient predators, and they have a big appetite for bugs. does not endorse extermination. It injects a fluid into its victims that breaks down the muscle tissue. Signature: IngridM. Species ID Suggestions Sign in to suggest organism ID. Giant Robber Fly. benefits youngster with Autism, Eighth Recipient of the Nasty Reader Award: Pink Inchworm. What's That Bug? Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Diversity among the dipterans: (from left to right, top) crane fly, horse bot fly, big-headed fly, moth fly, robber fly, (bottom) louse fly, bee fly, horse fly, gall midge, mosquito. This article was most recently revised and updated by, https://www.britannica.com/animal/robber-fly, University of Kentucky Department of Entomology - Robber Flies, Texas A&M AgriLife Extension - Robber Fly, Midwest Institute for Biological Control - Robber Fly. This page details the Robber Fly - L. grossa including size, ... but the face, thorax, upper legs, and upper abdomen all have yellow hairs. Notify me of followup comments via e-mail. Aphids, Scale Insects, Leafhoppers, and Tree Hoppers, Fungus Beetles and Pleasing Fungus Beetles, Pantry Beetles, Grain Weevils, Spider Beetles, Meal Worms and Carpet Beetles, Crickets, Camel Crickets and Mole Crickets, Sow Bugs, Pill Bugs, Isopods, Lawn Shrimp and Amphipods, Hummingbird Moths, Sphinx Moths or Hawk Moths, Pantry Moths, Clothes Moths, Case-Bearers and Meal Moths, Neuropterans: Lacewings, Antlions, and Owlflies, What's That Bug? June 30, 2011 10:38 pm This is a large robber fly which is approximately 3/4 - 1 1 /2 inches in length. Your email address will not be published. will not do your child's homework, Fanmail: WTB? The species that are pictured on BugGuide all look quite similar and we do not feel confident taking the identification to the species level. Most are dull in colour, and their stout, often hairy, bodies resemble The Asilidae are the robber fly family, also called assassin flies.

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