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Egg laying Drone fly Eristalis tenax Varp Sveiffluga Smásæi heimurinn
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Drone fly deposited eggs - Eristalis tenax - Egg laying Drone fly - Sveifflugur - Lirfur - Sveifflugulirfur - Rat tailed maggot - Mousies - Eristalis tenax larva - Hover flies larva - Sveifflugu lirfur - Rat-tailed maggot fly - Water maggot - Belatung ekor tikus - オナガウジ - Hoverfly larvae - Rattenstaartlarve - Queues de rats - Drone fly Larvae - Syrphidae - Smásæi heimurinn - Smádýralíf - Skordýr - Skordýralíf. Sveiffluga verpir - Verpandi fluga - Lirfurnar klekjast út í vatni - nota langan halann til að anda með - nú get ég skoðað þetta ferli og lært helling um þessar sveifur sem eru svo fallegar og duglegar að frjóvga blómin. Adult Eristalis tenax are important pollinators of many crops and wildflowers. The adult drone fly can be over half an inch in length. They can be easily differentiated from honey bees because they lack a constricted waist between the thorax and the abdomen, and they only have two wings, while honey bees have four. Like many other fly species, males can easily be distinguished from females because they have larger eyes that almost touch, while females have smaller eyes that are spaced further apart. Mated females overwinter and lay eggs the following spring. • Eggs are deposited near the surface of foul water or decaying organic material, and are laid in masses with the eggs side by side, perpendicular to the ground. It is not known how long it takes for eggs to hatch. • The drone fly undergoes complete metamorphosis with three larval instars. Usually two to three generations are produced each year - The aquatic larva has a cylindrical shape with patches of horizontal folds dividing the body into segments, between which the cuticle is smooth. At the division of each body segment, two rows of flexible hairs are visible. The larva has a highly specialized organ on the posterior end (siphon) that acts as a respiratory appendage and also looks like a tail, thus giving them their nickname rat-tailed maggot. The siphon can be several times the length of the body. The pupa looks very similar to the larva but is shorter and thicker. However, unlike the larva the pupa has two pairs of cornua, or horn-like bumps, located on the thorax. Drone fly larvae are aquatic, but sufficient solid food must be present to complete development, which is why they are found in water with high levels of organic matter. The respiratory appendage located posteriorly remains at the surface of the water while the larva moves through the water at various depths, allowing it to search for food without having to return to the surface to breathe See more: http://entnemdept.ufl.edu/creatures/l... • When they are fully grown, the larvae leave the water to pupate. The pupae are a reddish-brown colour. At the front are some horn-like projections, and the tail often curves up and over the back of the body. See more: https://www.uksafari.com/dronefly.htm • Rat-tailed maggots are the larvae of certain species of hoverflies belonging to the tribes Eristalini and Sericomyiini. A characteristic feature of rat-tailed maggots is a tube-like, telescoping breathing siphon located at its posterior end. This acts like a snorkel, allowing the larva to breathe air while submerged. The siphon is usually about as long as the maggot's body (20 mm when mature), but can be extended as long as 150 mm. This organ gives the larva its common name. The most commonly encountered rat-tailed maggot is the larva of the drone fly, Eristalis tenax. It lives in stagnant, oxygen-deprived water, with a high organic content. It is fairly tolerant of pollution and can live in sewage lagoons and cesspools. See more: https://en.wikipedia.org/wiki/Rat-tai... • The species Eristalis tenax (Linnaeus), commonly known as the drone fly (adult) or rat-tailed maggot (immature), is a mimic of the European honey bee Apis mellifera Linnaeus (Golding et al. 2001), and was introduced from Europe around 1875 (Gilbert 1986). The rat-tailed maggot is probably the source of Biblical writings that depict honey bees spontaneously developing from dead animals. This is because female drone flies can lay their eggs in carcasses. See more: http://entnemdept.ufl.edu/creatures/l... • The insect was unharmed in the making of this video. • Unfortunately handheld, with such a macro the video is shaky and not always on focus. I filmed this with Panasonic Lumix DMC- TZ40 camera.
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