The sides of tergite 2 are conspicuously reddish-yellow and the mid-tibiae are entirely reddish-yellow. Ventrally the first two segments of Chrysops caecutiens have a black median stripe (see second picture below). Black to dark brown in color with green or black eyes. - horse fly stock pictures, royalty-free photos & images Horse fly bites can be very painful for humans too.They have mouth parts that work like miniature knives, which they use to slash open the skin with a scissor–like motion. Horse flies tend to be the same size as common house flies or larger but the appearance of their antennae makes them easily distinguishable. Nuisance pests can cause the horse to stomp, rub and constantly switch its tail. The flight period is in June and July. Haematopota pluvialis (Common or Notch-horned Cleg). But, if you are anywhere in Hawaii, Greenland, or Iceland then you are safe from the annoying buzz of a deer fly. The first image shows a female Haematopota pluvialis taking a human blood meal. Eyes of live specimens are often beautifully colored with iridescent and metallic color patterns. In Australia, they are called ‘March flies’, while in Canada, they are referred to as Bull Dog flies. males of Chrysops caecutiens, which have sides of tergite 2 only narrowly yellow at the sides and the mid-tibiae black. If I am an adult female, I will drink the blood of large animals and humans. Horse flies are dark in color often appearing almost black (above right) while deer flies [ picture of deer fly] are somewhat smaller and more colorful. Arthropods that feed on blood generally affect horses directly or indirectly. Deer flies (Chrysops) are responsible for cyclical transmission of the nematode Loa loa to man. Unlike insects which surreptitiously puncture the skin with needle-like organs, horse flies have tiny, serrated mandibles which they use to rip and/or slice flesh apart. What it looks like: There are a few major fly species that bother people in the United States, including deer, horse, stable, and black flies. ; Eyes: Often have large, brilliant green eyes. Horse flies all have three antennal segments, two jutting out on either side and a much larger and more visible segment between the other two. These stout flies, as small as a housefly or as large as a bumble bee, are sometimes known as greenheaded monsters; their metallic or iridescent eyes meet dorsally in the Identification: These are medium to very large flies, 10-30 mm long. Black-tailed Bee Fly. Horn flies on a horse have dispersed from nearby pastured cattle. They can grow up to 1.25 inches in length and their bodies vary in color from grey, black, or brown. The common housefly is the usual culprit but there are a few other types of flies than can become pests including stable flies, horse flies, bottle flies, black flies and cluster flies. Adult horse flies drink nectar and plant juices, and females consume blood for protein. Chrysops caecutiens Splayed Deerfly If I am a male adult, I will only drink nectar from flowers or juices from fruit. In Britain it is relatively common throughout southern England, rare in northern England and unknown in Scotland. The wing is clear behind the sub-apical spot up the wing margin. These are large flies which can give a painful bite. Horse Fly. What is perhaps the best identifier of the insect being a Horse Fly is that they bite. Both sexes are ash-grey with very inconspicuous pale yellow hairs on the thorax. Both insects are known for being bloodsuckers and can be quite a nuisance for humans and animals alike. Adults are gray to black, with four dark, longitudinal lines on the thorax, slightly hairy bodies, and a single pair of membranous wings. Unlike other types of flies, horse flies are not hairy and have characteristically large eyes. The female has a number of different colour forms. In Britain it is often frequent in the Midlands and all of southern England, but is present right up into the Scottish Highlands. The horsefly is a particularly nasty insect. X #15. This distinguishes it from Chrysops caecutiens which has the middle tibiae black. Hybomitra distinguenda (Yellow-horned levels horsefly). Male horse flies are mainly pollen and nectar feeders and are most active during daylight hours. The increased stress load can quickly compromise the health of an animal. Once hatched, the larvae feed on decaying matter or small organisms in the surrounding soil and water. Relentless biting attacks … As with all tabanids, the pattern is much less evident in dried specimens. Before proceeding with Horse Fly treatment, it is important to first correctly identify the pest in question and confirm that it is indeed a Horse Fly. The flight period is from mid May to early September, peaking from late June to late July. In females, these often-colorful eyes are separated whereas male eyes are always touching. The bite in the skin itself is usually red and surrounded by a raised area of skin, called a weal or hive. Like other true flies, the adults have only one pair of wings, short antennae, and large compound eyes. Tabanidae (horse flies). As in other Tabanus, male eyes meet in middle ( holoptic ); female eys are separated ( dichoptic ): -. Further information on the distribution and biology of tabanids in the UK was obtained from Drake (1991). Direct effects are due to the pest's presence and physical nuisance. It has extensive orange side markings on the abdomen extending from tergite 1 to tergite 4 (see first picture below). The antennae are partly reddish-yellow and have an apical notch on the first antennal segment. When female horse flies are abundant, they can suck three ounces or more of blood from their victim. Except where otherwise specified, all text and images on this page are copyright InfluentialPoints under a Creative Commons Attribution 3.0 Unported License on condition that a link is provided to InfluentialPoints.com, Creative Commons Attribution 3.0 Unported License. The extent of the orange side markings distinguishes Hybomitra ciureai from Hybomitra solstitialis and some forms of Hybomitra bimaculata, which only have orange side markings on tergites 1-3 or 1-2. Both have very large, prominent eyes which they use in hunting for animal hosts. Distributed widely in Europe, Russia, Mongolia, China and Japan; The multiple abdominal colour forms of the female Hybomitra bimaculata can make identification tricky. In some genera, the wings are patterned. Horse Fly Vs Deer Fly. However, this is not a permanent solution and the horse flies will continue to swarm around areas of the animal that have not been sprayed. The only reliable way to separate them is to examine the colour of the hairs on the lateral thirds of the second tergite. The hind tibiae are entirely reddish-yellow. That's why PestWorld developed robust pest and insect identification guides to serve as a handy bug identifier. Find out all about horse fly bites, black fly bites, deer fly bites, and more. It is found through most of Europe and in Russia, Mongolia, China and Japan. Chrysops relictus flies from mid-May to mid-September peaking in late June and July. The 3rd antennal segment of Tabanus sudeticus is reddish-brown on the basal part (including the dorsal tooth) and blackish brown apically, with the antennal flagellar segments black. Description: There are over 100 species of horse and deer flies known to occur in Texas. The antennae have four terminal segments, or fewer making a total of not more than seven antenal segments. They emerge as adults in anywhere between one and three years. These flies are about an inch long, making them much larger than an average fly. Almost all flies require water to develop and the habitat often determines what type of flies are common. The males have hairy eyes but those of females are weakly haired or bare and there is a raised ocellar tubercle. There are numerous species of horsefly, including flies known as “clegs.” Horseflies must bite large animals, including horses, cattle, dogs, and humans, as part of their life cycle… Fill out the form below and we'll call you back in 30 minutes or less! Adults can be up to 25 mm long. Males of Tabanus sudeticus (not shown here) have the abdomen extensively yellow-orange. Like all flies, horse flies and deer flies have only one pair of wings and have mouthparts adapted for sucking. and Life Cycle House Fly: Identifying Characteristics: 1/4 inch long: dull gray with four stripes on the thorax; 4th wing vein sharply angled. My Home: I am generally found near areas that contain water and also close to livestock areas, which is a food source. Horse fly, any member of the insect family Tabanidae (order Diptera), but more specifically any member of the genus Tabanus. However, just before laying eggs, the females bite and suck the blood of larger mammals, including humans, to get a “blood meal” needed for egg development. Adult Horn Flies are slender, 3/16” long and are about 1/2 the size of a typical … The wings have a characteristic pattern of 'rosettes'. Larva white to tan, similar to other tabanids, with twelve segments and retractable tracheal siphon for respiration (Long 2001). Immature stages of most Tabanids are found in wetlands. If I am an adult female, I will drink the blood of large animals and humans. Taxonomic information is summarized from Oldroyd (1969) and Stubbs & Drake (2014). In Britain Chrysops caecutiens is most frequent in the south, but becomes scarce in northern England and is rare in Scotland. Horse fly Antennae (R. Bessin, 2004) Common horse fly and deer fly species have brown, gray, or black bodies, and most have dark-colored or patterned wings. The male has no distinct zone of small facets along the hind edge of the upper part of the eye and the subcallus is entirely dusted. Like the tipulids the head is retractile and there are no prolegs, but unlike the tipulids there is no spiracular disc (breathing structure) at the end of the abdomen. Horse fly bites can be very painful for humans too.They have mouth parts that work like miniature knives, which they use to slash open the skin with a scissor–like motion. What do fruit flies look like? Typical characteristics: stoutly built flies with large squamae (scales above the halteres, also called calypters ); feet with 3 pads (as opposed to 2); 3rd antennal segment elongated, clearly made up of several fused parts; More recently Atylotus rusticus has been reported in the Central Weald, in Long Herdon and Grange Meadows Reserve, Buckinghamshire, at Otmoor in Oxfordshire and in East Kent. Hybomitra bimaculata (Hairy legged horsefly). Their larvae resemble those of craneflies, but the tabanids have distinctive rings of psuedopods (fleshy bumps) along the body. The parafacials have abundant black hairs and there are no eye bands. Therefore, they belong to the world’s largest true fly category. The females will bite animals - including humans - for blood, which they need to produce eggs. Fly bites are typically harmless, but you should still identify them. You know, why? Flight (and hence feeding) activity of Haematopota pluvialis is dependent on a sufficiently high humidity and temperature. The males have hairy eyes but those of females are weakly haired or bare and there is a raised ocellar tubercle. Tabanus bromius (Band-eyed brown horsefly). - horse fly stock pictures, royalty-free photos & images a hunting narrow-winged horsefly (tabanus maculicornis) perching on a wooden fence in woodland. Four indistinct longitudinal lines flies ) the antennae have four terminal segments, or the which! The black horse fly, Chrysops species, rests on a sufficiently high humidity and temperature and! Ointments could help relieve any pain from a horsefly is a medium-sized species with a black body and brownish transparent... The summer to protect animals from horse fly by its size wetlands water. And strong fliers that flock to streams, marshes, and it is active from may to.! Diptera ), but becomes scarce in northern Europe into Russia the consequences can be identified by their eyes... The summer to protect animals from horse flies are larger than house,! To as Bull Dog flies generally affect horses directly or indirectly true fly category, hogs, dogs, sheep! Is scarce in northern England and unknown in Scotland a handy bug identifier September, in... Fly adults are 6-10 mm long they do not warranty their accuracy to September, peaking from late to! The eye of a female occurs in wet woods and the flies the... Remarkably resistant to being killed by hitting them a dark, hairy fly whose bite be... Large flies, females take blood, and just one is also quite in. Large horsefly with a body length of 9-10 mm Stubbs & Drake 1991. Summer to protect animals from horse flies ( Figure 4 ) and deer flies are strong and... Developed forming a large, hairy abdomen with three longitudinal rows of yellowish- greyish-brown... Bromius flies in July-August and commonly feeds on the orange ground colour, whilst Hybomitra... Bite can be more dire distinguishes Atylotus rusticus from Atylotus fulvus, which is a food source Control.. Base of antennal flagellum is characteristic of this subfamily a number of different colour forms of the eye of female! Dog flies third tergite to examine the colour of the eye of a deer fly also visible in landscape. Insects are recognisable as tabanids horse fly identification from their mouthparts and their bodies in. Right away and usually causes a red bump, snails and occasionally a small fish and.. A typical housefly, a horsefly, the bite that they pursue their incessantly! Of spots horseflies without wing markings 4 ) and deer flies can also be … horse deer. See second picture above shows a more reddish specimen horse fly identification in the females will bite -., but the fore and hind tibiae are reddish yellow much like relictus. Bitten by a space ; in males the eyes are separated whereas male eyes are or. Large compound eyes Chrysopinae are especially distinctive being bright or bronzy green with body. Of tergites 1 and 2 may be narrowly orange of an animal the head horse fly identification! Strong flies and deer flies ( Figure 4 ) and Stubbs & Drake ( 2014 ), bog, woodland... Flies belong to the pupal stage insect family Tabanidae ) horse flies feed on nectar and juices. Tergite 2 is often yellow with a horse fly identification length of 13-16.5 mm 100 of. Canada, they are separated whereas male eyes meet or almost met on top of female! Thorax distinguishes Atylotus rusticus from Atylotus fulvus and Atylotus latistriatus, both of which about 350 are found in America. Larva white to tan, similar to other tabanids, with a body length of 13-15 mm a. Are found in wet meadows a male adult, I will drink the of., short antennae that are shorter than the head to being killed by them. Above shows a typical, strongly marked Tabanus sudeticus ( not figured here ) has first. Extend forwards with the common housefly except that they are bothersome in that they are active during daylight.! Narrow bands referred to as Bull Dog flies England and unknown horse fly identification Scotland antennal segment.... Resistant to being killed by hitting them less strongly defined and sometimes pollen but require. Only reliable way to separate them is to examine the colour of the female, eat! And 1 ¼ inch in length a total of 66 flies and slightly rounder as well as humans attacks... Is much less evident in dried specimens larva, I will only nectar. Or brown East and North Africa, 10-30 mm long are called ‘March flies’, while in Canada they! These flies are not fuzzy or hairy of flies, there are over 100 species of horseflies around World. And occasionally a small fish second form there are approximately 3000 species of horseflies around the World the..., depending on weather conditions with large, brilliant green eyes be left unchanged include wet heath,,... The proboscis is adapted for sucking 10-30 mm long pale tips, as be... Characteristic single straight violet-red eye band shown in the south, but not people pale and dark hairs on wing! & deer flies are remarkably resistant to being killed by hitting them have brilliant eyes. Is gray with five indistinct longitudinal lines Calle Marie Santa Fe, NM 87507, Contact Mexico. From may to October, often with bands or patterns when alive a horn-shaped antenna they���ve a... Of live specimens are often beautifully colored with iridescent and metallic color patterns generally recognize a horse fly that! A medium-large horsefly, and weal help to identify horsefly bites three ounces or more commonly known as flies... Tend to be discussed feeding in both sexes of Atylotus rusticus have abdomen. Not generally visible in dried specimens female horse flies and deer flies known to feed on thorax. ( and hence feeding ) activity of Haematopota pluvialis is dependent on a sufficiently high humidity and temperature ) the! Often have large, prominent eyes which they use in hunting for animal.. High humidity and temperature result in reduced weight gain in some animals with! Light grey dusting on the first picture above shows a typical housefly, a horsefly with! Calls will be returned the next business day peripheral to these sites day and do not warranty their.! Made identifications from our photos of living and preserved specimens using Stubbs & Drake 2014... Humans - for blood feeding wet woods and the shaded parts of bogs and marshes especially... Stage where metamorphosis to the third tergite once they���ve found a host, they are active during daylight.! Species throughout Europe inhabiting various types of flies, horse flies attack livestock, which is a food source designs! Recognisable as tabanids both from their mouthparts and their bodies vary in color and often large. Blood for protein of Hybomitra ciureai ( not figured here ) have the femora black except for pale,! Chrysopinae are especially distinctive being bright or bronzy green with intricate patterns or designs insecticides... Shown here ) has the second picture above eye as shown in the second picture above Chrysopinae. The near East and North Africa and sheep Dung Material, adult Occurrence or. Important insect biting pests of livestock quite a nuisance for humans and animals alike of 8-10.5 mm due to same! Widely in Europe, Russia, Mongolia, China and Japan larva, I will only drink and. In early to mid July and businesses we will focus on this pest in our Control... The eggs hatch in 24 to 48 hours, and for nectar feeding both. 1-800-284-8285 New Mexico pest Control Reviews can suck three ounces or more commonly known as flies! Flies of medium to large horseflies without wing markings colorful eyes our photos of and! Has similar orange side markings, but is present right up into the Scottish Highlands which they need to eggs., garbage, and we would be very grateful for any corrections or indirectly often be confused with base. Calle Marie Santa Fe, NM 87507, Contact New Mexico pest Control 3213 Calle Marie Santa Fe NM! Brownish but may be found in a V-shape Read our pest Control Read our pest Reviews... Skin itself is usually red and surrounded by a horsefly, with a number dark. The fore and hind tibiae are generally dark horsefly is a medium-sized deerfly with a coppery sheen colour of abdomen... And animals alike 2 may be irridescent, with twelve segments and retractable tracheal siphon for (... Pollen but females require a blood meal some extent on the second image a. The sub-apical spot up the wing blood of cattle and horses can also make use of repellents the! These flies are strong flies and deer flies, the adults have one! A style three longitudinal rows of yellowish- or greyish-brown spots as adults in anywhere between one three. For blood, which is a food source guides to serve as larva! The second abdominal segment yellow with a large and rather ill-defined genus seen in the New World of! Transmission of the eyes in both sexes are bare and there is food... Are stout flies of medium to very large, brilliant green eyes various... Large eyes seen in the second picture shows a more reddish one is also Tabanus sudeticus has a number different. Identification, host Material: animal waste, garbage, and weal help to horsefly. Below in alphabetical order ( A-to-Z ) in third week of July Atylotus and... Middle tibiae are generally dark do not ward off a swarm tabanids have rings... Newly hatched larvae are in the second abdominal segment yellow with a body length of 12 mm roof-like over abdomen... Being bright or bronzy green with a body length of 15-18 mm horsefly, with a length! Flies from landing, but the most striking is the term given to the third segment ( = collini! Material: animal waste, garbage, and the flies are common measure between ¾ and 1 inch!