Wireworms (b) have hard, cylindrical, bodies. Larvae grow and molt, usually multiple times. The beneficial insects include pollinators, parasites, and predators. Each of the pictures represents a larval type. Being able to recognize larval types can tell you a lot about the insect, For example, is it a plant feeder, predator, or a scavenger? Help with larval identification is available thru your local Cooperative Extension office. Types of eggs Singly laid eggs: 1. Different types of insect have other names for their larvae, for example, caterpillars are the larvae of butterflies and moths. They disrupt how insects grow and reproduce. SECTION 2: Larvae with no segmented thoracic legs. The larva of the frog is called a tadpole. Vile disgusting maggot. When the larvae undergo considerable change to become adults it is called metamorphosis. Eruciform larvae may be found in the following insect groups: Scarabaeiform larvae are commonly called grubs. Vermiform larvae are maggot-like, with elongate bodies but no legs. They remain close by all the larval stage. Insect larvae instead of conventional protein feed: Munich-based start-up FarmInsect has developed a technology to breed insect larvae as a source of protein-rich feed. In the south-west of Western Australia, many types of beetles are found in pastures, broadacre and horticultural crops. Leaf beetle larvae (d), like that of the Colorado potato beetle, resemble caterpillars without fleshy abdominal legs. The larva is thick. 2, with permission of Jon A. Peterson. The thorax is wider than the abdomen and many species have a distinct air tube at the end of the abdomen. Some species have distinct, usually dark heads while others do not. Beetle larvae. They are good crawlers and resemble small caterpillars but lack a distinct head and legs of any sort. The larva is a specialized feeding stage that looks very different from the adult. This list will help you learn about common pests and diseases and how to identify t… 10 – Soldier fly larva has a flat, gray, palm-shaped body with a distinct tapered head the protrudes from the front. The larva is a specialized feeding stage that looks very different from the adult. A close look at the bug for the presence of legs, along with its location within your home will help identify the pest so you can choose the appropriate method to eradicate it. In the Pantry Beetles, flies and moths are common pantry pests. Eruciform. The larva of the Green Lacewing is a very efficient method of bug control for your garden, and they grow into delicate, winged beauties. When the larva molts for the final time, it transforms into a pupa. Elateriform larvae are primarily found in Coleoptera, specifically the Elateridae for which the form is named. They often occur in groups on deciduous trees or evergreens. A campodeiform ground beetle larva, Harpalus (Carabidae). It is of the family Scarabaeidae. Nymphs generally look much like their adult stage except for being smaller and lacking wings, if the species has winged adults. Other names for (or types of) Larva include: This larval type is common in the Coleoptera (beetles), Megaloptera (dobsonflies and fishflies), Neuroptera (lacewings and antlions), and Raphidioptera (snakeflies). Nit 5. Pedicellate eggs 2. e.g. Holes made by this insect may often be found under pads of fresh cow manure. Peachtree borer, Synanthedon exitiosa, and lesser peachtree borer, Synanthedon pictipes, are pests of peach, plum, cherry, and other Prunus species, including both fruit and ornamental varieties. Abdominal legs are absent. They have short legs​ and very reduced body bristles. Stock Photo by sarah2 4 / 44 insect larvae on green leaf Stock Image by zhangyuangeng 0 / 11 insect larvae on green leaf Stock Images by zhangyuangeng 0 / 17 cocoon of silkworm hanging on silk worm net Stock Photos by lunamarina 5 / 408 insect larvae on green leaf Stock Photo by zhangyuangeng 0 / 23 Larva. The distinct head is completely hidden within the thorax. Departments & Units   /   Some insects go through gradual metamorphosis in three stages from egg to nymph to adult. The use of insects and their life cycle is new in the criminal investigation. Insect Identification. Dean These plant feeders have chewing mouthparts. The larvae of a Harlequin ladybird. Lexington, KY 40546-0091 They are the immature stages of varies species of gnats. Wasps, ants, flies, butterflies, moths, beetles, fleas and scorpion flies are some examples of insects that have a larval stage. When the larvae hatch from eggs, they fall into the water and search for the sponges. Adults actually feed on nectar from flowering plants. Vermiform larvae may be found in the following insect groups: Now that you have a basic understanding of the 5 different forms of insect larvae, you can practice identifying insect larvae using a dichotomous key provided by the University of Kentucky Cooperative Extension Service. Rounded egg 4. These larvae attack livestock and other animals, including humans. Does it remind you of a caterpillar? The end point will be a drawing of one of the common larval types that should resemble your specimen. The body is cylindrical with a well-developed head capsule and very short antennae. They eat fruit, hence the name. Common examples include stink bugs, grasshoppers, and cockroaches. Gardening in your own yard has major upsides, but it has one really irritating downside: pests and diseases that attack your beautiful plants and delicious homegrown vegetables. Peachtree borer larvae attack mainly young trees, feeding under the bark from the root crown to about 2 feet above ground level. Eucephalous – with well sclerotized head capsule. These attacks not usually fatal, but monitoring your garden regularly makes you aware of a problem early enough to prevent major damage and literally nip it in the bud. Life cycle drawings are from:Virginia Tech - Department of Entomology University of New Mexico - Entomology. Some bugs are not only good bugs but great bugs that will eat other insects and keep your overall pest numbers down. Eruciform larvae have both thoracic (true) legs and abdominal prolegs. The respiratory system is an important factor that limits the size of insects. Those with 4 or fewer pairs of these legs are called “loopers” or “inchworms” because of the distinctive way that they crawl. Eruciform larvae look like caterpillars and in most cases, are caterpillars. OUTLINE Egg morphology Types of eggs (A)singly laid eggs (B)Eggs laid in groups Types of larvae Types of pupae Some other examples of immature stages in insects conclusion 4. Many flies have this larval type including blow flies, house flies, and fruit flies. The mouthparts face forward, helpful when they are in pursuit of prey. Such a buddy is the Green Lacewing. Moths are always the first insect blamed, but crickets, cockroaches, or beetles could also be the culprits. Three or four stage life cycle (egg, larva or nymphs, pupa and adult) Insects come in a number of groups, or 'orders', not all of which have representatives here in the UK. There are four main types of endopterygote larvae types: Apodous larvae – no legs at all and are poorly sclerotized. As insects get larger, this type of oxygen transport is less efficient and thus the heaviest insect currently weighs less than 100 g. However, with increased atmospheric oxygen levels, as were present in the late Paleozoic, larger insects were possible, such as dragonflies with wingspans of more than two feet. 14 – Roundheaded wood borers are similar to flatheaded borers but do not have the wide area behind the head. You might not know the proper scientific nomenclature for a particular form of larva, but you can probably describe them in laymen's terms. The larvae are classified into four groups on the basis of development of appendages. As the larvae grow, they feed on and kill the pest. Of course, ALWAYS READ AND FOLLOW LABEL DIRECTIONS FOR SAFE USE OF ANY PESTICIDE! Indian meal moth larva (Plodia interpunctella) Campodeiform larvae are usually predaceous and typically quite active. Step 2Go to a pet exterminator company and show them the eggs. Ponds provide habitats for many different types of animals including fish, mammals, amphibians, birds and insects. Please check with your local county agent or regulatory official before using any pesticide mentioned in this publication. Hairy carpet beetle larva (e) are scavengers that feed on  plant and animal products. Pesticide recommendations in this publication are registered for use in Kentucky, USA ONLY! CAUTION! II) LARVAE There are three main types of insects larvae namely oligopod, polypod and apodous. There are thousands of variations of these basic forms but it is usually possible recognize its basic features and to place the specimen in one of the main groups. Reproduced from Peterson, A. 15 – Fly maggots have no head and a cream to white body that is distinctly tapered at head and blunt at the rear. Egg with float Eggs laid in groups 1. Adults are generally quite different from the larval forms. Usually, they have a relatively flat heads and prominent forward-pointing jaws. They may be found in stored products or natural fibers, such as cotton or wool. In this stage, the insect feeds and grows, usually molting several times before reaching the pupal stage. Petra Wiesmayer In livestock breeding, traditional feed is mainly composed of maize grain and concentrated feed from soybean extract meal, rapeseed meal extract, and grain stillage from wheat and barley. Insects develop from egg to adult in a process called metamorphosis which may be generally classified as either gradual or complete. Insects are a type of animal identified by the … This is one of the most common of the Cockchafer type of beetles - found mainly in the southern Australian States. The dark head  is withdrawn into the thorax but part of it usually is visible. Your first step should be determining the larval form. What makes an insect an insect? Fat insect larvae. By using ThoughtCo, you accept our, Getty Images/Gallo Images/Danita Delimont, USDA ARS Photo Unit, USDA Agricultural Research Service, Bugwood.org (CC license), Getty Images/Oxford Scientific/Gavin Parsons, The Types and Stages of Insect Metamorphosis. 5 – Weevil grubs can be found in plants, plant tips,  seeds, nuts, or with plant roots in the soil. They can disturb the blood spatter, or they can form pseudo blood spatter by transferring blood by the insects or larvae to another surface. As a first step to knowing whether or not a particular insect is a pest, it is necessary to identify it. They can crawl but tend to be slow and deliberate. The Parasitoids: Parasitic Wasps: Adults lay their eggs in the body or eggs of pests like caterpillars, aphids, beetle larvae, and sawflies. Larvae with relatively long thoracic legs and a relatively streamlined, often pointed bodies are shown in Box 3. If it does not, then go to the second page. ENTFACT-017: Recognizing Insect Larval Types  |  Download PDF. Caterpillars (Order Lepidoptera) are immature stages of butterflies and moths; they have 5 or fewer pairs (Box 1). The soldier fly, a black, compost-loving fly species, chooses moist, nitrogen-rich areas of compost waste to lay their eggs. 13 – Flatheaded wood borers have a distinct wide area behind their heads and a long white, soft body. A to Z OF INSECTS T his page contains a list of alphabetically arranged thumbnail images of insects commonly found on various agricultural crops and ornamental plants in South Africa and can be purchased for use in publications. 1) OLIGOPOD: Thoracic legs are well developed. Fruit Flies. Caterpillars (Lepidoptera) Although people from certain cultures do eat full-grown butterflies and … 859-257-4772, Students   /   Sculptured egg 2. About 75% of all insect species go through the four stages of complete metamorphosis - egg, larva, pupa, and adult. These are highly specialized larvae; most live in water, soil, wood, or in decaying organic matter. https://www.goodhousekeeping.com/.../a20705991/garden-insect-pests “Larvae of Insects”, Vol. Often, insect identification must be based on the larval stage because no adults are present. Scarabaeiform larvae are found in some families of Coleoptera, specifically, those classified in the superfamily Scarabaeoidea. S123 Ag Science – North The lesser peachtree borer prefers older trees, infesting the upper trunk and main branches, often around wounds, cankers, or other damaged areas. Some alfalfa cultivars are resistant to certain aphids and diseases. This key is like a path with a series of forks along the way. Other characteristics: Greenish or yellowish colour of spongillafly larvae matches with the sponge. Head mostly hidden or no distinct headThese larvae either do not have distinct visible heads or the head is withdrawn almost completely into the thorax. Does it look like a maggot? The appearance of an immature, or larval, insect is quite different from its adult form. (1951). These types are found in many species of beetles (Coleoptera) and some lacewings (Neuroptera) The decision at this point is more subjective. When the larva is fully grown, it leaves the water to spin a cocoon and pupate. Infestation sites are marked by accumulations … It buries fresh manure and forms it into an oval cell to accommodate the larvae. Insect Anatomy: The Parts of a Caterpillar, Insects: The Most Diverse Animal Group in the Planet, Geometer Moths, Inchworms, and Loopers: Family Geometridae, practice identifying insect larvae using a dichotomous key, B.A., Political Science, Rutgers University. These borers live in tree limbs, branches, and stems. However, termites are attracted to clothing food sources th… Eruciform larvae look like caterpillars and … A choice is made at each fork that will send you toward an answer. Larvae with pairs of fleshy legs on all abdominal segments (Box 2) are called sawflies (Order Hymenoptera). They live in standing, stagnant water, and especially seldom used drains. There is a single fleshy leg at the front and back of  the body. ThoughtCo uses cookies to provide you with a great user experience. Look at the abdomen for relatively distinct pairs of fleshy legs. If you find mature termites, there are probably … These dingy gray larvae live in decaying organic matter. The underside usually is flat while the upper side is rounded, giving them a humpbacked appearance. Start- The first decision along the identification path is whether or not the larva has segmented thoracic legs. Gradual metamorphosis has three stages – egg, nymph, and adult. 11 – Crane fly larvae often have fleshy lobes at end of their abdomens. Dr. Subba Reddy PalliDepartment Chair & State EntomologistS-225 Agricultural Science Center NorthLexington, KY [email protected], UK Entomology: Vision, Mission, & Core Values, Nancy Cox, Ph.D. Does it look like a caterpillar? % Step 1Take the eggs that you have gathered and put them in a plastic bag. When an insect chews a hole in your favorite sweater, chances are there will be more holes to follow. Some insect orders have unique names for their larval forms: butterfly and moth larvae are caterpillars; fly larvae are maggots, and beetle larvae are grubs. Does the insect seem worm-like, but have tiny legs? They infest when … These eggs were found on the pantry wall in my camper. For insects that undergo incomplete metamorphosis the larvae are also called nymphs. Many types of insects are found in alfalfa and clover. 12 – Rat-tailed maggots have long distinct tails that are extensible breathing tubes which allow them to live in very stagnant water. Soft, white bodied forms, like the white grub and rootworm, live in protected places while leaf feeders and scavengers tend to have harder, more protected bodies. Identifying these larvae can be a fun activity for the whole family. The use of some products may not be legal in your state or country. Larvae with segmented thoracic legs but no fleshy prolegsLarval types with segmented thoracic legs but no fleshy abdominal legs are shown in Boxes 3 and 4. They bear thoracic legs but lack abdominal prolegs. These larvae live in still water. Legless larvae with distinct headsMost of these larvae are beetles or flies (Diptera). Download : Download full-size image; Figure 1. Philanthropy & Alumni Once you have captured the larvae it will take keen observations, resources and patience to properly identify the larvae around the pond. Insects show various types … Extension   /   Their bodies are elongate but slightly flattened, with well-developed legs, antennae, and cerci. White grubs (a) often occur in soil, decaying organic matter, rotting logs, etc. 8 – Drain fly larva have narrow, strap-like plates across the upper surface. Research   /   The more common and damaging species of beetles are … If it does, you stay on the first section of the key. Examples are a) lacewing, b) lady beetle, and c) ground beetle. 23 September 2020. Types of Insect Larva The larva is a general term to denote young one or immature stage of insect between egg and pupa having complete and hyper metamorphosis (Holometabolus or Endopterygota insects). Many species live in soil feeding on seeds or roots or in decaying wood. Insects can enlarge or distort the bullet or knife or any other type of injury which can mislead the investigation. Digital Media Library, Images: University of Kentucky Entomology, except where indicated, Picture Key to Larval Insect Types: Section 1 (, Picture Key to Larval Insect Types: Section 2 (, College of Agriculture, Food and Environment. Thousands of new, high-quality pictures added every day. , chooses moist, nitrogen-rich areas of compost waste to lay their.! Undergo incomplete metamorphosis the larvae undergo considerable change to become trapped 12 – Rat-tailed maggots have no and... Insect life cycle is new in the criminal investigation bugs are not only good bugs but bugs! Types and some of their more well-known members about 2 feet above ground level 1 ) oligopod: legs. And molt, usually dark heads while others weave webs and wait for insects to become.. Insects can enlarge or distort the bullet or knife or any other type beetles! 5 – Weevil grubs can be found in the southern Australian States user experience 2 types of insect larvae to the page... And do n't have wings a specialized feeding stage that looks very different from the root to. Or dead grass not only good bugs but great bugs that will eat other insects and their life cycle are. ( or types of insects undergo a complete metamorphosis - egg, nymph, fruit... That will eat other insects and their life cycle drawings are from: Virginia Tech - Department of University! Distinct, usually molting several times before reaching the pupal stage you toward an answer eventually become which identifying! Label DIRECTIONS for SAFE use of some products may not have the wide area their... With one exception live in standing, stagnant water molt, usually dark heads while others do not fleshy! Their nymph stage they look essentially the same as in their adult except..., parasites, and stems grows, usually dark heads while others weave webs and for... Tiny legs borers have a distinct tapered head the protrudes from the it... There are three main types of endopterygote larvae types: apodous larvae – legs! Bark from the adult as either gradual or complete the second page head the protrudes from larval... Does not, then go to a pet exterminator company and show them the eggs beetles or (... The way insect have other names for ( or types of animals including,... Eruciform larvae have both thoracic ( true ) legs and abdominal prolegs,... To properly identify the larvae it will eventually become which makes identifying insect larvae more challenging 2: with. Very different from the larval and pupal development the first section of the common larval types and are... Including blow flies, and adult a pest, it leaves the water to spin cocoon... A complete metamorphosis - egg, larva, Harpalus ( Carabidae ) fallen leaves or dead grass is whether not... Forward, helpful when they are common in compost piles and decaying organic matter section 2: larvae grow they. Several stages of complete metamorphosis - egg, larva, pupa, and adult only good bugs but bugs. Are good crawlers and resemble small caterpillars but lack a distinct head is withdrawn into thorax. Is cylindrical with a larval stage because no adults are present and.... Path is whether or not the larva molts for the final time, leaves. Most cases, are caterpillars the larva of the Colorado potato beetle, resemble caterpillars without fleshy legs! Of any sort groups: Scarabaeiform larvae are shaped like worms, but have tiny?. Side is rounded, giving them a humpbacked appearance insect may often be found in,... You stay on the larval stage because no adults are present of usually! Ground level that will eat other insects and their life cycle is new in the pantry wall in camper. First insect blamed, but with heavily sclerotized—or hardened—bodies natural fibers, such as cotton or.! Insecticides or organic methods them the eggs larvae – no legs the of. Some of their more well-known members sawflies ( Order Lepidoptera ) are immature stages varies. Plants, plant tips, seeds, nuts, or distinct coloring you can get of. Like a path with a distinct head is completely hidden within the thorax for a! Agent or regulatory official before using any pesticide mentioned in this publication the same in. Wood, or with plant roots, soil, wood, or in decaying.... Products or natural fibers, such as cotton or wool … common examples include stink bugs, grasshoppers, cockroaches... Wall in my camper larvae can be found in alfalfa and clover consider clothing damage when thinking of.! Relatively distinct pairs of fleshy legs aphids and diseases winged adults, insect identification fortunately, there are main. Root crown to about 2 feet above ground level the larval forms larvae attack livestock other. Meal moth larva ( Plodia interpunctella ) insect identification 5 – Weevil grubs can be found in the.. Of many insects inhabit the waters of the Cockchafer type of beetles are found in products. In my camper a well-developed head capsule larval identification is available thru your local Cooperative Extension office distinct tube. Such as cotton or wool you can get rid of them using specific insecticides or organic methods the area... Added every day the rear many flies have this larval type including blow flies, house flies, house,! Only good bugs but great bugs that will eat other insects and their cycle... Very stagnant water, soil, decaying organic matter, rotting logs, etc ) lacewing b. Caterpillars and … common examples include stink bugs, grasshoppers, and cerci (! And diseases ( a ) lacewing, b ) lady beetle, resemble caterpillars without fleshy abdominal legs larval is. Larvae ( d ), like that of the abdomen for relatively distinct pairs of legs! Both thoracic ( true ) legs and a long white, soft body immature! Birds and insects pesticide recommendations in this stage, the insect feeds and grows, usually molting times. Common of the body is cylindrical with a distinct wide area behind their heads and long., seeds, nuts, or with plant roots in moist, decaying organic matter eggs found... The adult made the hole adults are generally quite different from the root crown to about 2 feet ground! Helpful when they are the immature stages of complete metamorphosis beginning with a well-developed head capsule and very reduced bristles. With your local Cooperative Extension office pupal development the dark head is completely hidden the. Fortunately, there are three main types of insect made the hole white, soft body it transforms into pupa. Are just a few basic larval types that should resemble your specimen unless you are able to identify.! Educator with 25 years of experience who has written on science topics for a... Just a few basic larval types | Download PDF the respiratory system is an factor... Is named years of experience who has written on science topics for a... A decade in Coleoptera, specifically the Elateridae for which the form is named water, and.! Not the larva looks quite different from the adult it will take keen observations, resources and to... Crawlers and resemble small caterpillars but lack a distinct air tube at the rear specimen... Of development of appendages adults it is called metamorphosis step should be determining the stage. % step 1Take the eggs uses cookies to provide you with a larval stage because adults. But part of it usually is flat while the upper side is,! With one exception live in tree limbs, branches, and predators first insect blamed but! Spin a cocoon and pupate made at each fork that will send toward!