66 Maine Agricultural Experiment Station. 1917. 



and not noticeably punctate ; antennae ending just cephalad 

 of the mesothoracic legs ; maxillae slightly more than half the 

 length of the wings, usually about four-sevenths ; prothoracic 

 legs normally ending opposite the maxillae ; cephalic margin 

 of prothorax considerably elevated as seen in lateral view ; pro- 

 thorax with a distinct median carinate ridge, a similar but less 

 prominent ridge on the metathorax ; abdomen with medium 

 punctures, larger along the cephalic margin of the movable 

 segments ; the surface irregular with fine ridges and some ir- 

 regular depressions so that it does not appear even ; first three 

 abdominal segments broadly elevated along the meson ; furrow 

 between the ninth and tenth abdominal segments without prom- 

 inent teeth, the teeth all about the same size ; ninth abdominal 

 segment with few punctures, the tenth smooth ; each half the 

 cremaster (Fig. 5, E) with a large, rather blunt mesal projec- 

 tion and a smaller, more pointed lateral one. 



Length 15 to 18 mm.; greatest width 5 mm. 



The larvae of this species feed on walnut and hickory. 

 They pupate in the ground, each larva making a somewhat oval 

 cell, without spinning a cocoon. 



DATANA MAJOR Grote and Robinson. 



Fig. 5, F. 



Color bright reddish brown ; crest very prominent with two 

 longitudinal furrows and deep transverse striations, the lateral 

 margins punctate ; face-parts and appendages with irregular, 

 transverse striations' and depressions ; antennae meeting on the 

 meson caudad of the mesothoracic legs ; maxillae slightly more 

 than half the length of the wings ; prothoracic legs much shorter 

 than the maxillae ; mesothoracic legs meeting on the meson just 

 caudad of the maxillae ; cephalic margin of prothorax not ele- 

 vated ; prothorax and metathorax very slightly elevated along 

 the meson ; abdomen rather coarsely punctate and with small 

 indeterminate depressions, both transverse and longitudinal ; 

 furrow between the ninth and tenth segments edged with black, 

 the caudal margin elevated and with uneven teeth ; both ninth and 

 tenth abdominal segments punctate like the remaining segments ; 

 each half of the cremaster (Fig. 5, F) with three equal projec- 

 tions. 



