Grammostola alticeps

Grammostola alticeps (known as Brazilian greysmoke spider in the pet industry) is a New World spider in the tarantula family (Theraphosidae). It is endemic to Uruguay, Paraguay, and Brazil.^{[1] [2]}

Grammostola alticeps
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Mygalomorphae
Family:	Theraphosidae
Genus:	Grammostola
Species:	G. alticeps
Binomial name
Grammostola alticeps (Pocock, 1903)
Synonyms
Citharoscelus alticeps Pocock, 1903

Description

Grammostola alticeps have a light reddish/orange underbelly, and are 6–7 inches in length. In captivity they are fed crickets and roaches.^[3]

Stridulating organ

The stridulating organ, used to make a hissing sound (stridulation), consists of a large cluster of fine close-set bristles on the rear surface of the coxa of the palp, and two smaller clusters at the far end of the front surface of the coxa of the first leg, one just above and the other just below the suture. ^[4]