LARVAL FORMS OF COLEOPTERA 



11. More than one ocellus on each side of head, usually five or six 



ocelli ; antenna three-jointed 12 



One ocellus on each side, or none; antenna two-jointed or 

 less ' 13 



12. First eight abdominal segments with a transverse, ventral 



region with ambulatory warts (pi. 109 G) ; anal opening 

 dorsal; labial palpus one- jointed. (Spiracles annular or 

 biforous; larva covered with excrement or slimy exudation)... 



Crioceridae (pi. 109 A-G) 

 First eight abdominal segments without any ambulatory 

 warts : anal opening ventral and placed in the middle of the 

 sucking disk of the tenth abdominal segment; labial palpus 



two-jointed ChrijsomelkJae (pi. 109 H-M) 



13. With a combination of the three following characters: Epi- 

 cranial suture well-developed or long; one ocellus on each 

 side of head; dorsal region of each of first to seventh ab- 

 dominal segments distinctly subdivided into two or three 

 transverse areas (pi. 110 C and G) 



Galerucidae - Golerucinae-'^ (pi. 

 110 A-M) 



With a different combination of the three characters 14 



14. Epicranial suture present, but usually short; ocelli absent; 

 dorsal region of each of first to seventh abdominal segments 

 subdivided into three transverse areas. (Intersegmental 

 membranes often large ; spiracles annular, except in Ex- 

 osoma, (pi. Ill M), where they are biforous) 



Galerucidae - Diahroticinae^- 

 {Diahrotica, Cerotoma, Phijl- 

 lohrotica, and Exosoma lusi- 

 tanica) (pi. Ill A-M) 

 Different combination. (Spiracles always annular) 



Galerucidae - Halticinae^^ (pis. 



112 A-R, 113 A-X, 114 A-0) 



®^ In the present subfamilj- Galerucinae are included all of the 



genera which usually are placed in the subfamily Galerucinae, with 



the exception of the ones tabulated in the following subfamily, 



Diabroticinae. 



^- This subfamily, which probably includes more genera than 

 the ones listed above, but whose larvae are unknown, is more closely 

 connected with the Halticinae tribes, Crepidoderini, Chaetocnemini. 

 Systenini, and Psylliodini than with the subfamily Galerucinae, as 

 here conceived. 



*^ The subfamily Halticinae includes genera with remotely re- 

 lated larvae such as Blepliarida, (112 L, 0, Q, R), Oedionychis (113 

 A-E), Haltica (112 A, B), Psylliodes (112 M, N), and Sphaero- 

 derma (114 I-O). When better studied, the classification of the 

 entire family Galerucidae will unquestionably be changed. 



65 



