PROC. ENT. SOC. WASH., VOL. 24, NO. 1, JAN., 1922 9 



EXPLANATION OF PLATES. 



The drawings were made by Mr. Harry B. Bradford under the direction of 

 the authors. 



Plate 1. 

 Fig. 1. Head capsule of larva, front view. 



2. Head capsule of larva, side view. 



3. Setal map of body segments of larva. 

 " 4. Larva. 



5. Wings of male. 



6. Forewing of female. 



Plate 2. 



Fig. 7. Pupa, dorsal view. 



7a. Section of pupa skin, showing sculpture. 



8. Pupa, ventral view. 



9. Pupa, side view. 



10. Abdominal proleg of larva. 



11. Male genitalia of moth, front view; aedoeagus removed. 



12. Male genitalia of moth, back view; aedoeagus removed. 



Plate 3. 

 Fig. 13. Male genitalia, side view. 



14. Male genitalia, front view. 



15. Signum of female bursa copulatrix. 



THE LARVA OF THE NORTH AMERICAN BEETLE ZENODOSUS 

 SANGUINEUS SAY OF THE FAMILY CLERIDAE. 



BY ADAM G. BOVING AND A. B. CHAMPLAIN. 



The description of the following form adds another genus to 

 those previously described by us. 1 



Zenodosus sanguineus Say. 



( = Thaneroclerus sangnineiis Say.) 



(Plate 4, figs. 1-11.) 



U. S. Nat. Mus., Wash., D. C.; four specimens of which one 

 specimen is dissected and mounted on two slides; labeled: 

 Zenodosus sanguineus Say, Harrisburg, Pa. In mines of 

 Ptinids and Calandrids in dead scar on living Betula. Larvae 

 collected and adults reared by A. B. Champlain. 



Total length of body, about 10 mm.; extreme width, about 1 mm.; extreme 

 thickness almost 2 mm.; anterior width of prothorax about 1^2 mm. Head 

 capsule with length to width as 5 : 4. Chitinous parts shiny. Head capsule 

 dark Indian red; mandibles dark brown, almost black; prothoracic shield brown 

 ochre, posteriorly with two slightly darker colored spots, medianly with fine 

 light line, meso- and metathoracic plates, basal plate <>t cerci and claws sepia 

 brown: other chitinized parts brown ochre to pale brown; membranous parts 

 vermillion red with slightly lighter pattern above heart and muscle attachments; 



'Adam Boving and A. B. Champlain: Larvae of North American beetles of 

 the family Cleridae. Proc. U. S. Nat. Mus., vol. 57, No. 2323, p. 620. 



