AiiT. 2 BEETLE LABVAE OF GALERUCINAE BOVING 41 



reality it is possible to retain, with slight modification, our customary 

 taxonomic arrangement for the larvae. 



The larvae of tiie Chrysomelinae ( = Crysomelini, Cat. Col. Eur., 

 1906, =Cyclica, Henriksen, ■v\ith genus Bromius excluded) are char- 

 acterized by having the antenna three-jointed, the ocelli present on 

 each side in a number exceeding one. namely, from four to six, and 

 the labial palpus two-jointed.-- 



The larvae of the Galerucinae ( == Galerucae, Cat. No. Eur., 1906, 

 = Galerucini, Henriksen) have the antenna one-jointed and provided 

 with a jointlike tactile papilla, one ocellus on each side, and the 

 coronal ( = median epicranial) suture distinct. 



The larvae of the Halticinae ( = Halticae, Cat. Col. Eur. 1906, 

 =Halticini, Henriksen) have the antenna one- or two-jointed, one 

 ocellus on each side or no ocelli, and the coronal (= median epi- 

 cranial) suture absent. 



Among the Galerucinae larvae Monocesta coryli represents an iso- 

 lated type particularly characterized by the unusual form of the 

 labrum and the mandible and the unique development of the mid- 

 dorsal series of abdominal sclerites (figs. 1 and 2). Agelastica alni 

 is the only galerucine larva having abdominal supraspiracular 

 glands and approaches in this respect the Chrysomelinae larvae of 

 Gastroidea, Melasoma, Phaedon, and related genera. It also possesses 

 sej)arate scutal and scutellar areas on the abdomen and, ventrally, 

 well developed intersegmental bands, but these characters are likewise 

 found in Sermyla-ssa halen.sls and are indicated in GaleruceUa luteola. 

 The presence of three transverse tergal areas and intersegmental 

 bands may signify more generalized morphological conditions of the 

 abdominal segments than the presence of only two transverse areas 

 and no intersegmental band, so while the presence of the glands in 

 Agelastica surrgests some connection with the specialized chrysomeline 

 larvae, the development of the abdominal areas is more in accordance 

 with the development of the same features in several primititve 

 larvae, including in particular the larvae of Phyllohrotica and 

 Diajjrotka. 



The common Galerucinae type with united scutal and scutellar 

 areas and no intersegmental bands comes in many respects near to 

 the larva of the tribe Halticini so well interpreted by Woods and 

 Kemner. 



From this common Galerucinae iy\)Q the larva of Monoxia consputa 

 appears to deviate greatly but represents in reality merely a biological 

 adaptation of the type to a mining life in soft plant tissues rather 



--The larvae of t'ie Eumpolpinao, to which genus Bromius belonss, liavo no ocelli and 

 liave a one-jointed labial palpus. 



