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The ptin

The ptin, a dangerous polyphage

Who's the ptin ?

le ptine, Ptinus furLatin name: Ptinus fur, gibbium psylloides
Order: Beetles
Family: Ptinidae/Anobiidae
Size: 2 to 5 mm
Location: habitation, local
Period: all year

Larva: size: 4 mm. Resembles a small rather soft and slightly arched white worm with a pubescence of yellowish cherry on the whole body.

What you need to know about the ptin

Ptines love to live and develop in the corners of our homes. it looks for humidity and darkness (it doesn’t really like light). It is found mainly in the old houses, in the barns, barns, cellars, between the old walls and the placoplas that cover them, under the floors. by its glossy smooth and glossy appearance, this insect is very characteristic and easily recognizable. Resembling a small spider or a large tick, it measures between 2 to 5 millimetres, consists of 3 pairs of legs, two antennae, a reddish round body and a small black head. he can't fly because his elephants are welded and he moves slowly enough. This bug is harmless. he doesn't sting, don't bite and cause allergies. He is content to be there and consume what he loves.

Very polyphage, ptine thief or ptinus fur attacks almost everything: wheat, flour, semoule, oatmeal, sound, straw, pasta, dried cakes, dried bread, tobacco, liquorice, honey, dried fruits (darts,) cocoa, herbalistry products, spices (pepper, ginger, piment,) leather, skins, furs.

It can cause significant damage to tissues and books and some minor damage to stored foodstuffs. However, its damage is considered less than those caused by neighbouring species. the bulged ptina adapts very well to fresh climates and can survive for a long period without any food; The adult can live up to 1 year. certain hymenopteres belonging to the bethylidae family may parasitize its larvae.

Ptines also like wet places: the dark corners where water infiltrates without knowing it are real cities with ptines! poorly ventilated spaces between a partition or plaster plates and old walls are usually gibbium markers. the household, which does not suspect their presence in these inaccessible hiding places, then considers the sudden sweating of these insects as an apparent hint of malproprety. It's nothing!


The Australian Vesta or Ptina (ptinus tectus) is not present in france. its diet is similar to that of the thief ptina, but its fertility is much higher: about 1,000 eggs instead of 50 for the thief ptina !

Sheltered from the eyes, the ptines cross by taking advantage of the buffered conditions of their hiding place. when densities become too strong, adults migrate to colonize favorable but few populated places. these seasonal dispersions suddenly reveal them and make them particularly unpopular. they arise in the bathroom and then invade the least corners of the house. but not panic: most of them quickly die from dehydration and exhaustion at the foot of the household.

The ptin development cycle

Biology of this species is very close to that of other anobiidae. Full evolution requires an average of 12 to 16 weeks, in normal conditions, and only 7 in optimal conditions at 33°C. Females lay 50 to 100 eggs, usually at the end of the spring or summer, outbreaks will occur 2 weeks after the deck. Larval development lasts about six weeks, nymphosis extends over 3 to 4 weeks. 3 to 4 generations ago.

Other ptins

le ptine, Gibbium psylloidesIn the same family, you can find the bulged ptina (gibbium psylloides) which is a pest insect of spices, grains, altered flour, dried bread, cocoa, leather, artificial silk. it was also reported in Egyptian museum mummies. The golden ptine (niptus hololeucus) is polyphage and omnivorous.

How to eliminate the ptin ?

The fight against gibbiums must be pre-emptive: in risk homes, attention should be paid to anything that could promote their existence. prevention must begin with the renovation of the building, when building partitions or building floors. Then, we must never neglect the damage to the roofs and clean up the wetlands.

Caution and prevention will, however, not prevent one day, ptinas from invading one or the other. suspicions must be immediately on old floors, which must be removed to remove accumulated debris over the years. Pyrethre based insecticide treatment will be performed. If the infestation is spectacular, a disinfection company may need to be contacted.

We'll take it in the same way as the food machine. Here is how to proceed:

1. Take a large trash bag and throw everything that is not in a fully hermetic box, even the products that seem impeccable.
2. pass the vacuum cleaner in all corners and corners of the closet or reserve.
3. fill a hot water basin + product dishes + disinfectant ( bio of course!). has the help of a brush, rub the whole closet without forgetting any corners.
4. When everything is dry, deal with our insecticide 4j diluted to 5% the whole closet (see 500ml for 5m2 treated surface). to treat large surfaces, prefer this same insecticide but under its concentrated form. then you will make the dilution with water in a 5% sprayer (50ml insecticide for 950 ml of water)

5. for less accessible corners and holes, the treatment can be completed by the Insecticide Ecodoo. it contains pyrethra, alcohol and essential oils. ourfogger habitat will complete the direct treatment by propagating pyrethre and geraniol smoke in the treated part. this product remains a complementary help to contact action such as insecticide 4j. it will nevertheless allow to reach and destroy the uncovered ptines in walk.

6. the diatomaceous earth placed in soil grooves or wall interstices will yield good results on this type of insect. either by powdering the diatom directly into the holes and corners, or by injecting it with the aeroso diatomal in wall cracks for better penetration of powder.

7. put in various places in the closet a few food anti-mite bags.

8. put in various places in the closet or in the rooms piègfood mites (brand Aries or Kapo). for a major invasion or large parts, you can opt for the trap xxl of the mark Aries (action field = 70 m2).

9. All you have to do is put all your food back in the closets, but still in totally hermetic boxes.

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