Scavengers Archives - ETS Engineering Techniques Service Wed, 22 Nov 2023 10:21:57 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://ets-uae.com/wp-content/uploads/2021/11/cropped-cropped-favicon-32x32.png Scavengers Archives - ETS 32 32 Sawtoothed Grain Beetle https://ets-uae.com/stored-product-pests/sawtoothed-grain-beetle/ Tue, 12 Sep 2023 12:20:45 +0000 https://ets-uae.com/?p=9114 Sawtoothed Grain Beetle General Description ·  The adult is 3 mm long and 1 mm wide. There are six waw-like projections on each side of the thorax. ·  The adult is unable to fly. ·  The larva is 4-5 mm long, narrow in body form, and it is yellowish white.  Each of its abdominal segments […]

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      1. Sawtoothed Grain Beetle

      General Description

      ·  The adult is 3 mm long and 1 mm wide. There are six waw-like projections on each side of the thorax.

      ·  The adult is unable to fly.

      ·  The larva is 4-5 mm long, narrow in body form, and it is yellowish white.  Each of its abdominal segments bears a yellowish plate on the top side.

      · Pupa is 4 mm long, yellow with toothy protrusions on the edges of the body.

       

      Credit: Udo Schmidt

       

      Life Cycle and Common Characteristics

      • The adult spends the winter hibernation on the stored products or in the cracks of the walls of the stores.
      • The female lays eggs (total 45-285 shiny eggs) in small masses in crevices in the food supply, although they are also laid freely in flour.
      • The female does not lay eggs below 24°C (the optimum is 30°C).
      • Egg incubation is 5-15 days.
      • The larva feeds on stored products and molts 2-4 times.
      • The larva is fully developed from 2-10 weeks.
        • The larva pupates and the pupal stage takes about 1-2 weeks.
      • The generation period is 3-4 weeks.
      • The insect has several generations a year.

       

      Damage and Economic Implications

      • The larva and the adult insect feed on stored and crushed grain and flour (flour, pasta, chocolate, tobacco, hazelnuts, pistachios).
      • The larvae damage the products and pollute them with their waste.

       

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    ]]>         Red Flour Beetle https://ets-uae.com/stored-product-pests/red-flour-beetle/ Tue, 12 Sep 2023 12:18:07 +0000 https://ets-uae.com/?p=9112   Red Flour Beetle   General Description ·  The adult is 3-3.7 mm long and 0.9-1.2 mm wide. ·  This insect resembles a flour beetle that is similar or confusing in appearance and color but differs in that the last three or terminal segments of the antennae are enlarged and enlarged suddenly from the previous […]

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      1. Red Flour Beetle

       

      General Description

      ·  The adult is 3-3.7 mm long and 0.9-1.2 mm wide.

      ·  This insect resembles a flour beetle that is similar or confusing in appearance and color but differs in that the last three or terminal segments of the antennae are enlarged and enlarged suddenly from the previous ones so that the antennae look like a club.

      · The egg is cylindrical in shape and white in color.

      ·  The larva is white with a yellowish tint. When fully grown, they are about 6.5 mm long. The larva is cylindrical in shape, its pectoral legs are growing, and the abdomen ends with two short spines (anal horns) that are brown in color.

      ·  The pupa is naked and lives in the same environment as the larva.

       

      Credit: Udo Schmidt

       

       

      Life Cycle and Common Characteristics

      • The female lays 400-500 eggs on stored foodstuffs during her lifetime.
      • The eggs hatch after 3-32 days.
      • The incubation period for eggs ranges from 10-25 days, depending on the temperature.
      • The larva goes through six larval instars (up to 12, depending on the type of food).
      • The duration of the larval stage is from 33-100 days.
      • The pupal stage lasts from 5-18 days.
      • The adult insect lives from 170-200 days (and may live from 1-1.5 years sometimes).
      • The insect has 4-5 overlapping generations per year.

       

      Damage and Economic Implications

      • The insect infests stored dates, flour, grains, dried fruits, nuts, and other stored foodstuffs.
      • It does not cause economic damage.

       

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    ]]>         Confused Flour Beetle https://ets-uae.com/stored-product-pests/confused-flour-beetle/ Tue, 12 Sep 2023 12:15:46 +0000 https://ets-uae.com/?p=9110 Confused Flour Beetle General Description ·  The adult is 3-4 mm long and 1-1.2 mm wide.  Oval in shape. Its color is reddish brown. ·  Egg: very small, flattened, oval ,and white in color. · The larva is white-tinged with yellow, and the upper surface of the body segments is dark in color and covered […]

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      1. Confused Flour Beetle

      General Description

      ·  The adult is 3-4 mm long and 1-1.2 mm wide.  Oval in shape. Its color is reddish brown.

      ·  Egg: very small, flattened, oval ,and white in color.

      · The larva is white-tinged with yellow, and the upper surface of the body segments is dark in color and covered with yellow hairs. The larva is cylindrical in body shape.  The fully developed larva is about 6.5 mm long.

      ·  The pupa is white tending to yellow. It is about 4 mm long.

       

      Credit: Sarefo

       

      Life Cycle and Common Characteristics

      • The female lays 350-450 eggs on stored foodstuffs during her lifetime.
      • The incubation period for eggs ranges from 5-25 days, depending on the temperature.
      • The duration of the larval stage is 33 days.
      • The duration of the pupal stage is from 6-20 days.
      • The adult insect lives from 170-200 days.
      • The insect has 4-5 overlapping generations per year.

       

      Damage and Economic Implications

      • The insects is found on stored foodstuffs such as wheat, wheat, and corn flour, as well as dates that are packed in warehouses.
      • It does not cause economic damage.

       

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