LARVAL FORMS OF COLEOPTERA 



Mandible withoiit molar structure; hypopliaryngeal sclerome 

 weak or absent 32 



32. Body armed with many long, often branched, setiferous dorsal 



and lateral processes 33 



Body without long- setiferous dorsal and lateral processes 34 



33. Three ocelli on each side; urogomphi absent; lacinia mandibu- 



lae absent CoccinelUdae-Epilachnmae (pi. 



38 J-N) 

 Five ocelli on each side ; urogomphi well developed, often as 

 long as body; lacinia mandibulae large 



Erotylidae'° (pi. 41 A-E, G) 



34. Mentum and submentum not fused 



DacnkJae'° (pi. 42 A-T) 

 Mentum and submentum fused. (Prementum, mentum, sub- 

 mentum, and gula with a common, hourglass-shaped plate 

 toward which anterior part of hypostoma sends a bridge as 



in Staphvlinini) Melandryidae^'^ (pi. 43 A-Z, 



AE) 



35. Body terminating in a deciduous ovate appendix 



Scraptidae'^° (pi. 44 A-E) 

 Body not so 36 



36. Mandible with a taillike, hairy appendix or a fleshy, hairy lobe 



behind the base of mola. (Right and left mandibles only 



slightly different) 37 



Mandible without such appendix or lobe 38 



37. Hypopliaryngeal sclerome strong and ring-shaped ; three large 



and two or three small ocelli present on each side of the 

 head ; appendix of mandible tail-shaped 



Bijturidae'^ (pi. 45 A-N) 

 Hypopliaryngeal sclerome small and shaped like a cup on top 

 of a large, slightly chitinized dome ; one ocellus present on 



each side of head ; appendix of mandible lobe-shaped 



Anthicidae - Euglenidae - Anos- 

 pidae^'^ (pis. 46 A-W and 47 

 A-I) 

 50 Prom the family Melandryidae are excluded the genera 

 Eiistrophus and Penthe which are placed in the family Dacnidae, 

 the genus Scraptia which forms a separate family, Scraptidae, and 

 the genus Sijnchroa which also forms a separate family, Synchroidae. 

 ^^ In AntJiicus heroicus Casey the cup-shaped top of the hypo- 

 pharynx is very thinly chitinizecl and is recognized onlj' by careful 

 examination. The genus Anas2)is, usually considered as belonging 

 to the Mordellidae, can by no character be distinguished from the 

 Anthicidae ; neither can the eugienid genus Hylophilus according 

 to the larva of Hylophilus popnlneus Panzer which has been reared 

 by E. C. Rosenberg in Denmark. The mandibles of the family 



39 



