Insect of the Month: Lesser Grain Borer (Rhyzopertha dominica)
Casey Vollmer Casey Vollmer

Insect of the Month: Lesser Grain Borer (Rhyzopertha dominica)

The Rice Weevil larvae do the greatest amount of damage as they The lesser grain borer is a primary pest of whole grains, especially corn and cassava root.

The adults chew small holes in the kernel and then lay several eggs in the grain or in the grain mass.

Damage is seldom noticed until exit holes appear and adults are seen roaming the grain mass.

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Watch: 100 Rice weevils cause damage to pasta over 6 months
Casey Vollmer Casey Vollmer

Watch: 100 Rice weevils cause damage to pasta over 6 months

Rice and maize weevil (Sitophilus oryzae and zeamais) can cause major damage to stored grains and processed foods. Their movement through food can spread and encourage mold germination and their excrement leaves behind uric acid that can cause rancidity.

Following the theme this month, this video shows a time-lapse GIF of 100 rice weevils in pasta over a 6-month period at 82F (28C) and at 60% relative humidity. It is important to monitor for rice and maize weevil activity to help prevent populations from damaging products and causing customer complaints.

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Insect of the Month: Rice Weevil (Sitophilus oryzae)
Casey Vollmer Casey Vollmer

Insect of the Month: Rice Weevil (Sitophilus oryzae)

The Rice Weevil larvae do the greatest amount of damage as they eat the inside of grains and seeds, leaving only a husk behind. The adults also have strong chewing mouthparts and will cause damage as well. Detection can be difficult in grains that have recently had eggs laid in them.

After some time, the damage becomes evident as the grains become so light and hollow, that you can easily break them into dust with your fingertips. In heavy infestations, chewing can sometimes be heard.

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Watch: Clothes Moth Identification
Casey Vollmer Casey Vollmer

Watch: Clothes Moth Identification

This guide breaks down the differences between webbing clothes moths and casemaking clothes moths. Clothes moths of both species feed on wool, fur, feathers, mohair, animal hair and other animal fibers. They can infest museums, homes, and businesses.

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Insect of the Month: Casemaking Clothes Moth (Tinea pellionella)
Casey Vollmer Casey Vollmer

Insect of the Month: Casemaking Clothes Moth (Tinea pellionella)

Casemaking clothes moth larvae damage woolens, silks, furs and materials made with hair and feathers. The primary means of detection of casemaking clothes moth is the presence of silken cases that contain larvae.

Granular frass, the size of ground pepper, can be found in, on, and under fabric, furs, taxidermy mounts, hanging clothes in closets, rugs, carpets, and upholstered furniture.

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Watch: Silverfish Damage to Books and Archives
Casey Vollmer Casey Vollmer

Watch: Silverfish Damage to Books and Archives

Silverfish commonly cause damage to books, archives and paper as well as a wide range of other materials. They can be a nightmare to librarians, archivists, museum professionals and to people in their homes.

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Insect of the Month: Common Silverfish (Lepisma saccharina)
Casey Vollmer Casey Vollmer

Insect of the Month: Common Silverfish (Lepisma saccharina)

Silverfish and firebrats are placed in the order Thysanura which is considered one of the most primitive of the living insect orders.

There are four species considered common in North America; the Firebrat (Thermobia domestica), the Common Silverfish (Lepisma saccharina), the Gray or Longtailed Silverfish (Ctenolepisma longicaudata), and the Four-Lined Silverfish (Ctenolepisma quadriseriata).

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Clothes Moth Management
Guest User Guest User

Clothes Moth Management

Webbing clothes moths belong to the family Tineidae which contains over 3,000 species and is collectively known as the clothes moth or fungus moth family. Many moth species in the Tineidae family look very similar to one another. In many cases, proper identification requires dissection of the abdomen to view the genitalia structure to determine the exact species.

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Watch: Black Carpet Beetle Life and Feeding Habits
Casey Vollmer Casey Vollmer

Watch: Black Carpet Beetle Life and Feeding Habits

Black carpet beetles can be a serious pest of wool carpets and rugs but can also be a pest of dried food goods. Pheromone monitors can assist in locating the feeding sources of this pest so control can be achieved. Keys to identifying the larvae and adults as well as an explanation of their life history and feeding habits are covered in this video by entomologist Patrick Kelley.

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Black Carpet Beetle, Attagenus unicolor: A Pest of Carpets and Dried Food
Patrick Kelley Patrick Kelley

Black Carpet Beetle, Attagenus unicolor: A Pest of Carpets and Dried Food

When the common name of an insect includes what it likes to eat, (think clothes moths, flour beetles, saw-toothed grain beetles, etc.) you know that those items are particularly at risk of being eaten by that specific species. While carpets made from wool are a fond food source for black carpet beetle larvae, carpets are only one menu item in a long list of potential foods for this pest. Somewhat surprising to many is that black carpet beetles are a common pest on grain-based, dried food goods.

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Insect of the Month: Black Carpet Beetle (Attagenus unicolor)
Casey Vollmer Casey Vollmer

Insect of the Month: Black Carpet Beetle (Attagenus unicolor)

Black Carpet Beetles are commonly found in processed foods such as, spices, biscuits, meal, four, seeds, and dog food, but can also attack horn, untreated hides, wool, hair, silk, and dead insects. The black carpet beetle is a common household pest.

Only larvae cause damage to plant or animal products or textiles. The presence of cast skins is usually apparent. Holes and frayed fibers in textiles also may be present.

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Implementing a Pheromone Monitoring Program
Guest User Guest User

Implementing a Pheromone Monitoring Program

Grain storage, food processing, warehousing, retail facilities, and residential houses are far too diverse to expect a single set of pheromone monitoring recommendations to be adequate. Here are 4 fundamental questions to ask when developing a pheromone monitoring program

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Watch: Complete Lifecycle of the Fruit Fly
Casey Vollmer Casey Vollmer

Watch: Complete Lifecycle of the Fruit Fly

Fruit flies progress from egg, through several larval instars, to pupa and then to adult in as little as 10 days. Males initiate courtship rituals after picking up short-range pheromones from females. Adult fruit flies can live up to 40 days.

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The Red-Legged Ham Beetle, No friend of hams, and even worse friend of pet food
Guest User Guest User

The Red-Legged Ham Beetle, No friend of hams, and even worse friend of pet food

Red-legged ham beetle (RLHB for short) is about a quarter of an inch long, and has iridescent green wings, and dark orange legs. The adults of these insects are quick on their feet as well as very capable fliers. Effective flight is a necessity when scouting out ephemeral food sources like dead animals. What’s more, these insects are also good competitors of other insect larvae.

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