Spiders certainly must look ferocious to the insects and other creatures they eat. But to many animals, spiders look delicious.
Description: Darkling beetles are about 18mm to 30mm (0.75 to 1,5in) long and an elongate oval in shape, that is black in color.The head contains notched eyes, thread-like antennae, and chewing mouth parts. The front wings are smooth and shiny, and the legs are long.eographic range: There are 100 species in the Western United States, and these Beetles are one of the most commonly seen insects in the Jornada Basin. Habitat: The darkling beetle is found in a variety of desert habitat s such as shrub lands, grasslands, and arroyos.
Darkling beetle is the common name of the large family of beetles, Tenebrionidae.The number of species in the Tenebrionidae is estimated at more than 20,000 and the family is cosmopolitan.n English, darkling is a more or less literal translation of tenebrio, meaning dweller in dark. Many species do inhabit dark places, but there are exceptions; for example, many species of Tenebrionidae in genera such as Stenocara and Onymacris are active by day and inactive at night.