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Latest Pennsylvania wood cockroach Stories

2011-12-19 16:17:35

A North Carolina State University discovery of the unique chemical composition of a cockroach signal — a "Let's hook up" sex pheromone emitted by certain female wood cockroaches to entice potential mates — could have far-ranging benefits, including improved conservation of an endangered woodpecker. Dr. Coby Schal, Blanton J. Whitmire Professor of Entomology at NC State and the corresponding author of a paper describing the discovery, says that the study, published the week of...


Latest Pennsylvania wood cockroach Reference Libraries

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2005-08-25 11:23:00

Cockroaches are insects of the order Blattodea. The names of the order are derived from Greek blatta, meaning "cockroach". There are roughly 3,500 species in 6 families. Cockroaches exist worldwide, with the exception of the polar regions and in elevations above 6,500 ft (2,000 m). Among the most well-known species are the American cockroach (Periplaneta Americana) which is about 3 cm long, and the German cockroach (Blattella germanica) about 1.5 cm long. Tropical cockroaches are often...

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Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.