Weevil Species, Types, Facts, Diet, Characteristics, Habitat, Lifespan, Common names and scientific names with lots of interesting facts are discussed here.
- 1 What is a Weevil?
What is a Weevil?
Weevil is one of the types of beetle from the super family of Curculionoidea. They are generally small, less than 6mm and herbivores. There are almost 97,000 species in the several families and mostly belongs to the family Curculionidae. Some beetles whether not closely related to the family bear the name ‘Weevil’ like biscuit weevil which belongs to the family Ptinidae. Most of the weevils are considered as the pests as they have the ability to damage crops and other organic things. But others are used for the biological control of invasive plants.
The grain or wheat weevil is popular to damages stored grain. The boll weevil damaged cotton crops. It lays eggs in the cotton balls and the larvae eat the cotton when come out. Some weevils have the ability to fly such as rice weevil.
Weevil Scientific Name: Curculionoidea
The scientific name of the weevil is Curculionoidea. The size of the weevils is usually small less than 6 mm and these are herbivores. The physical appearance of the weevil is based on the species. There is a total 97000 species in the various families in which mostly species belong to the Curculionidae. They are generally divided into two major divisions which are Orthoceri or Primitive weevils and Gonatoceri or true weevils. Primitive weevils are easily recognized by their straight antennae while true weevils have elbowed antennae.
Types of Weevils
There are more than 90k species of the weevil exists on the earth. But it can be classified into the several types which are discussed here:
- Boll Weevil
The scientific name of the Boll weevil is Autonomous grandis. These weevils feed buds and little balls of cotton plants. Their body size length is only 6mm. Boll weevils are hardly seen in the winters as they hibernate. Before that they produce many further generations.
- Flour Weevils
These are another type of destructive weevils which belongs to the family Tenebrionidae. Although it contains the name weevils but these are not correctly weevils. The body length is quite oval of these weevils which have the length of 3 to 4 mm.
- Rice Weevils
It is also known as the Sitophilus Oryza which has the reddish-brown body color. The body length of these weevils can be 4mm and wings contain the color red or light yellow in pattern.
- Bean Weevils
These are not the true weevils. These weevils are known as the Acanthoscelides obtectus. They rather belong to the team of seed beetles. Their bodies are slightly rounder than wheat and rice weevils.
- Wheat Weevil
These are also known as the granary weevil. The wheat weevil is notorious for destruction in agriculture. The body length of these weevils is usually less than 5 mm with dark brown color all over its body.
- Cowpea Weevil
Cowpea weevils are also known as the Callosobruchus Maculatus. They feed largely on cowpea and accumulated soybeans. They lay the eggs on the soybeans that they feeding. As larvae produced, they also start eating those beans to grow.
- Lixus Iridis
- Pissodes Strobi
- Phyllobius Oblongus
- Curculio Elephas
- Diaprepes Abbreviatus
- Nedyus Quadrimaculatus
- New York Weevil
- Lixus Angustatus
- Larinus Planus
- Rynchophorus Cruentatus
- Phyllobius Glaucus
- Anthonomus Rubi
- Hypera Rumicis
- Plum Curculio
- Sitona Lineatus
- Anthonomus Pomorum
- Rhinocyllus Conicus
- Acanthoscelides Obtectus
- Hypera Zoilus
- Callosobruchus Maculatus
- Maize Weevil
- Curculio Nucum
- Hylobius Abietis
- Otiorhynchus Ovatus
- Giraffe Weevil
- Rhynchophorus Ferrugineus
- Wheat Weevil
- Vine Weevil
- Rice Weevil
- Boll Weevil
Most of the weevils are less than 6 mm in length although largest exceed 80 mm. The majority numbers of weevils are of brown or gray in color but only few like diamond beetle are brightly colored. Weevils are successful only because of the development of the snout that they used for penetration and also feeding. They also bore the holes with it to lay their eggs. This family includes some extremely destructive pests like gain weevil and the rice weevil.
These have a pair of antennae on their head that used as the sensors. The head is the home for the insect’s antennae, eyes, and mandibles (jaws). Thorax holds the three pairs of legs as well as vital internal organs. At last, the abdomen which is the house of organs related to circulation, reproduction and excretion.
The weevils have the almost similar habitats to the beetles. The most destructive weevils are boll and wheat weevils which are dangerous for the cotton and wheat crops. The cotton boll weevils attack on the cotton crops and lay their eggs in the cotton plant. And then the larvae eat the cotton to make their way to come out. The weevil’s egg takes about three weeks to fully develop and grow in boll or square like structure.
What does weevil eat?
They weevils are often found outside in gardens or in kitchens where food is stored. Many species of weevils have the very specific food preferences. The weevils are grouped into one of three categories: fruit and nut weevils, seed and grain weevils or root weevils.
What does a weevil look like?
The weevil has the physical appearance like beetles. Sometimes it is hard to distinguish the beetles and weevils.
How long do weevil live?
The lifespan depends on the species and habitat in which it lives. The average weevil can live up to 7 – 8 weeks.
How to get rid of weevils
- Cleaning and improving your pantry.
- Discard any food that has weevils.
- Vacuum and wash your pantry.
- Wipe your pantry shelves with eucalyptus oil or white vinegar.
- Place all your food in airtight, hard containers.
Are weevils insects?
Yes. Weevils are insects as it has the many similarities with the family Insecta. The weevils have the number of species under this order which are notorious for the destruction of cotton plants and stored wheat grains.
The reproduction process is different in the weevils. The weevils can develop from the larvae very quickly in the warm climate or condition. They lay the eggs in the harvested crop and the begun the attack food supplies. It takes a couple of weeks to become eggs to weevils.
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