HOW TO KNOW THE IMMATURE INSECTS 



3 1 a. Fore wings usually extending beyond 4th abdominal segment; if 

 not, then the body depressed, antennae adjacent on the middle; 

 first 4 abdominal segments usually longer than the remainder; 

 epicranial suture always present 32 



31b. Fore wings not extending beyond 4th abdominal segment; if be- 

 yond, then the maxillary palpi never present; first 4 abdominal 

 segments rarely longer than the remainder; epicranial suture 

 rarely visible 35 



32a. Antennae 4/5 as long as fore wings, meeting only at apex; labial 

 palpi distinct (Scythris) YPONOMEUTIDAE 



32b. Antennae reaching almost to the tip of wings, meeting at middle 



and sometimes diverging at apex; labial palpi usually concealed. 



33 



33a. Antennae not diverging at apex 34 



33b. Antennae diverging at apex 35 



34a. Prothoracic legs longer than mouth 

 parts. 

 Fig. 518 (Etbmia) ETHMIIDAE 



Fig. 518. Depressaria heracliane 

 De Geer. 



34b. Prothoracic legs shorter than mouth parts. . .A few GELECHIIDAE 

 35a. Fronto-clypeal suture complete. Fig. 519. ..Family GELECHIIDAE 



Pupation takes place in a silken cocoon. 



The family is a large one with several thousand 

 species and numerous genera. The several species 

 of Recuivana mine within the needles of the conifers. 

 The other species pictured is a widely distributed pest 

 of stored grain, feeding and pupating within the grains. 



Fig.519. a. Spruce 

 leaf-miner, Recur- 

 V a r i a piceaillo 

 Kearf; b, Sitotro- 

 ga cerealelia 01 iv. 

 (U.S.D.A.) 



183 



