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  • Spider Beetle Beetles

    Spider Beetle
  • Spider Beetle
  • Spider Beetle
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Elimination

In the event of a spider beetle infestation, you should check areas of the building where waste can accumulate. The first thing to do is to remove all possible food sources for these insects. You should also pay attention to hard-to-reach areas such as structural voids: walls, attics, under baths, suspended ceilings, electrical outlets, pipe contours, etc.

Afterwards, it is advisable to vacuum cracks and fissures to remove any food sources that may be present. To avoid a second infestation, the contents of the vacuum must be emptied into the bin, as the multiplication of insects could still continue there.

Finalement, si la situation persiste, l’intervention de nos techniciens certifiés demeure une solution sécuritaire et efficace.

Une intervention implique que les surfaces traitées ne devraient pas être lavées pendant environ un mois afin de permettre au produit d’agir efficacement.

Actions

  • Inspect the premises and the external environment to eliminate food sources and shelters
  • Request assistance from one of our pest management experts

Prevention

  • Store food in sealed containers
  • Avoid putting rodenticides in structural voids when there is rodent infiltration

Description and development

Spider beetles (family Ptinidae ) are small, reddish-brown, holometabolous insects that are often mistaken for spiders because of their highly convex, rounded body and long legs. The abdomen resembles the ornamental head of a pin, and their antennae are long and slender. Spider beetles measure 1.5 mm to 3.5 mm long.

Below are the three most common genera of spider beetles:

1. Mezium: The head and thorax are covered with hairs and the hind trochanters are short. The most common species is the American spider beetle (Mezium americanum ).

2. Gibbium: Resembles the genus Mezium, but the hind trochanters are long and the head and thorax are smooth and shiny like the abdomen. The most common species in Quebec is probably the shiny spider beetle (Gibbium psyllioides ).
3. Ptinus: The thorax often bears tufts of hairs and the elytra (rigid wings) are grooved. The white-marked spider beetle (Ptinus fur ) is a member of this genus.

No data is available on the spider beetle life cycle. The larva is whitish, except for the head, which is yellowish with dark brown mouthparts. The larva is completely covered in long, fine hairs. Its size varies from 0.5 mm (at hatching) to 3–4 mm just before the pupal stage. The whitish to light brown pupa measures about 3.5 mm. It is protected by a cocoon made of silk mixed with fine particles of whatever substance it is resting on.

Habits

Spider beetles feed on decomposing or dry animal and/or plant organic matter. They are often found in buildings that have been inhabited by rodents and/or birds. In the case of rodents, the spider beetles feed on old bait, droppings, and hair. In the case of birds, they feed on feathers and droppings. Spider beetles prefer hard-to-reach areas, but they can be found almost anywhere food is available, and sometimes in tremendous numbers.

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