Entomology 3

Order hemiptera

True bugs, hoppers, aphids, etc.

One large order with 3 suborders:

• Heteroptera (true bugs)

• Auchenorrhyncha (plant hoppers, leaf hoppers, cicadas,etc.)

• Sternorrhyncha (aphids, scales, whiteflies, etc)

Haustellate mouthparts (piercing/sucking)

• some with filter chamber (especially if they drink plant sap)

Suborder heteroptera

True bugs

Have hemelytra (forewings thickened basally, apex membranous)

Often with large triangular scutellum-generally in middle of back

Sometimes with scent glands

• advertise unpalatability

Mouthparts maneuverable

Various habitats (terrestrial and aquatic)

Paurometabolous

Some pests, some beneficial

Stink bugs

Stink bugs

Herbivorous species often considered pests

• eat plant sap

• Some beneficial predators

• Can cause “cat facing”: make the fruit so ugly nobody wants to buy it but it’s still edible; inward, sucked in, deformed look

Large triangular shape with rounded end

Nymphs often conspicuous, brightly colored

Large triangular scutellum

True bugs metamorphosis

Paurometabolous

Immatures always called nymphs even if the species is aquatic

Nymphs share habitat with parents

Look almost identical to adults (color might be different)