Mandibles short, black, as in D. pugnax, with blunt, distinct, distal teeth. 



Sclerite of submentum, in contrast to D. pugnax, distinct, yellowish, 

 wider anteriorly, with deep median indentation; setae chestnut brown. 



Pronotum dark chestnut brown; posterior margin black; light dots at 

 posterior margin in each half indistinct; a narrow, longitudinal, oblong, 

 light dot situated posteriorly along median suture; a large, round dot near 

 posterior margin; anterior and anterior angles with a row of 12 — 13 strong, 

 dark setae, including 4 long, thick setae; 2 short, light setae near lateral 

 margin, a long, thin, blackish seta some distance from margin; surface with 

 median and lateral pairs of thick, black setae; other surface setae consisting 

 of 2 dark, moderately long, and 11 brown to light brown setae, most of them 

 thin, small. 



Mesonotum, in contrast to the preceding forms, usually uniformly light 

 chestnut brown at anterior margin, lighter, grayish posteriorly; anterior 

 angle with a group of 18—2 setae, including 2 — 3 thick, black, moderately long 

 setae; median anterior-margin group with 6—7 setae, including 2 black, 

 strong setae near suture; posterior-margin group consisting of 10—11 setae, 

 5—6 of them black, moderately long. 



362, 



FIGURES 613-615. Dinarthrum tchaldyrense Mart.: 



613 - head, dorsal (A) and ventral (B); 614 - tergites of metanotum; 615 - larval case. 



452 



