HOW TO KNOW THE IMMATURE INSECTS 



is called a coaictate larva or a pseudopupa. The first instar of 

 Platygaster, a pcorasite of the Hessian Fly, resembles a crustacean 





Fig. 29. Life srages of Epicauta vittoto Fabricius. 



and is called a naupWiioxm larva. The first instar of Perilampus, a 

 secondary parasite of the fall webworm, is called a planidium, mean- 

 mg a diminutive wanderer. 



COMMON NAMES OF LARVAE 



The importance of common names has been emphasized by many 



Entomologists in recent years. We wish we could have common names 



or all the more important insects. Only a few orders now have com- 



non names. The larvae of Lepidoptera are known as cateTpillars. The 



erm gzubs is applied to the larvae of Cpleoptera. Maggots indicate 



me larvae of Diptera, Cyclorrhapha and Caddiswoims the larvae of 



|Trichoptera. A number of common names have been applied to the 



larvae of certain families: the Geometridae are called inchworms or 



jpeasuring worms; the LimacodMae are known as siug caterpillars; the 



Psychidae are called bagworms; the Chrysopidae are named aphid- 



fions; the Myrmeleonidae are known as an/-iions. The Elateridae are 



called wireworms and the Sphingidae are known as hornworms. 



Some common names are derived from the larval habits, such as 



