Which order is known as book lice or bark lice?

Which order is known as book lice or bark lice?

• A. Mallophaga (Chewing Lice)
• B. Psocoptera (Book/Bark Lice)
• C. Gryllidae (Crickets)
• D. Phasmatodea (Walkingsticks)

Answer: (B)

Book lice and barklice are in the order Psocoptera. These tiny, soft-bodied insects are commonly found on tree bark, lichens, or in stored books, where they feed on mold, fungi, algae, or starches in bindings. This ecological niche gives them their familiar names. Morphologically they are small with long antennae, and they can be either winged or wingless, often with simple wing venation. The other groups listed belong to different insect orders: crickets are Orthoptera, known for jumping hind legs and sound-producing organs; walkingsticks are Phasmatodea, noted for their elongated, stick-like bodies; chewing lice are traditionally grouped as Mallophaga, but that name is an older, less accurate reference for certain parasitic lice. Thus, book lice or bark lice correspond to the order Psocoptera.

Book lice and barklice are in the order Psocoptera. These tiny, soft-bodied insects are commonly found on tree bark, lichens, or in stored books, where they feed on mold, fungi, algae, or starches in bindings. This ecological niche gives them their familiar names. Morphologically they are small with long antennae, and they can be either winged or wingless, often with simple wing venation. The other groups listed belong to different insect orders: crickets are Orthoptera, known for jumping hind legs and sound-producing organs; walkingsticks are Phasmatodea, noted for their elongated, stick-like bodies; chewing lice are traditionally grouped as Mallophaga, but that name is an older, less accurate reference for certain parasitic lice. Thus, book lice or bark lice correspond to the order Psocoptera.