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Identification of Stored Product Insects

Identification of Stored Product Insects. External feeders. Group of oval shape. Cigarette beetle, Lasioderma serricorne (Fabricius) Coleoptera: Anobiidae. Body oval, 2 – 2.5 mm long, light brown in color. Wings are smooth and shiny. Head faces it’s abdomen

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Identification of Stored Product Insects

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  1. Identification of Stored Product Insects External feeders

  2. Group of oval shape

  3. Cigarette beetle, Lasiodermaserricorne (Fabricius)Coleoptera: Anobiidae

  4. Body oval, 2 – 2.5 mm long, light brown in color. • Wings are smooth and shiny. • Head faces it’s abdomen • Antennae are ½ the length of the body; 11 segments; 4th – 10th are serrate (saw like).

  5. Drugstore beetle, Stegobiumpaniceum (L.)Coleoptera: Anobiidae

  6. Oval body, 2 – 2.5 mm long, rough/hairy surface • Antennae: last 3 segments form loose club. • Wings have longitudinal stirae (rows of punctures); and rough.

  7. Khapra/warehouse beetles (Trogoderma spp.) Coleoptera: Dermestidae

  8. Body 2 – 3 mm, reddish-brown (thorax darker), oval, top surface covered with fine hairs. • A median ocellus between compound eyes. • Antennae 11 segmented, 3 – 5 segments forming club. • Cavities on prothorax for antennae

  9. Group of oblong shape

  10. Red flour beetle, Triboliumcastaneum (Herbst)Confused flour beetle, T. confusum du ValColeoptera: Tenebrionidae • Body 2.3 – 4.4 mm long; red brown • Forewings with longitudinal lines. • Eyes divided by head margins. • Last segments of antennae are clubbed.

  11. Red flour beetle: Underneath Eyes close together 4-5 eye facets at its narrowest point Last 3 antennal segments abruptly clubbed Confused flour beetle: Eyes widely separated 2-3 eye facets at its narrowest point Antennal segments are gradually larger to form club Rfb Cfb Cfb Rfb Cfb Rfb

  12. Small-eyed flour beetle, Palorus spp. • Body 2.7 – 3.0 mm long; red brown; similar to red flour beetle. • Each compound yes is undivided (round) • Antennae are not clubbed.

  13. Flat group

  14. Flat and rusty grain beetles (Cryptolestes spp.) • Body 1.5-2 mm long; oblong, flattened light brown. • Head and prothorax account for ½ the body length. • Antennae are filiform and long (> the body length).

  15. Merchant grain beetles, Oryzaephilus mercator (Fauvel)Sawtoothed grain beetle, O.surinamensis (L.)Coleoptera: Silvanidae • Body 2.5 – 3.5 mm long; slender and dark-brown. • Antennae are short and clubbed. • Prothorax has 6 tooth-like projections along each side.

  16. Relative lengths of eye and temple of sawtoothed and merchant grain beetles

  17. Moth Group

  18. Indianmeal moth, Plodiainterpunctella (Hubner)Lepidoptera: Pyralidae

  19. Body is 7 – 10 mm long. • Fore-wings are bicolor: basal 2/5 is cream the rests dark-reddish brown. • Labial palps are pointed directly forwards.

  20. Rice moth, Corcyracephalonica (Stainton)Lepidoptera: Pyralidae

  21. Body is 7 – 10 mm long. • Forewings are grayish brown with vague darker brown lines along the wing veins. • Female labial palps: long & pointed; male labial palps very short and blunt

  22. Almond moth, Ephestiacautella (Walker)Lepidoptera: Pyralidae

  23. Body is 7 – 10 mm long. • Forewings are grayish brown with vague darker brown lines along the wing veins. • The labial palps are curved and blunt.

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