LARVAL FORMS OF COLEOPTERA 



Plate 22 



Hjjdrovh l(](u\ Hjjdyoph ilidae-Beyosinae, 

 Hijdroplulklae-Hydrophilinae, Hydrophilidae-Hydro'biinae 



A. 

 B. 



C. 

 D. 



E. 



P. 

 G. 



Hydrocliiis sqnamifer Lee. 

 (After E. A. liiehmond) 

 Berosus signatieollis Charp. 



(Denmark) 



Laccobiiis iniiiutus L. (Denmark) 

 Hydrochns sqnamifer 



'(After E. A. Richmond) 

 Berosus spinosus Stev. (Denmark) 

 Ilydrophilus earaboides L. (Denmark) 



H. Laccobins minutus 



I. 



J. 



K. 



L. 



M. 



N. 



0. 



P. 



Q. 



E. 



Hydrobins fuscipes L. (Denmark) 



Paracynuis aenens Germ. (Denmark) 



Helochares lividns Porster (Denmark) 



Enoehrns melanocephalus Od. (=E. bi- 

 color Payk.) (Denmark) 



a i I 



i( (< 



Philydrns sp. (Denmark) 

 Enoehrns melanoceplialns 



Ventral mouthparts. 



Ventral view. 

 Anterior part of 



head. 



view. 

 Head. 

 Larva. 



Dorsal 



Dorsal view. 

 Dorsal view. 



Larva. Dorsal view. 

 Larva. Dorsal view. 

 End of body. Lateral 



view. 

 Anterior part of 



body. Ventral 



view. 

 Larva. Lateral view. 

 Larva. Dorsal view. 

 Head. Dorsal view. 

 Head. Ventral view. 

 Head. Dorsal view. 

 First instar. Dorsal 



view. 

 End of bod}'. Dorsal 



view. 

 Head. Dorsal view. 

 Proleg'. V e n t r o - 



lateral view. 

 Proleg-. V e n t r - 



lateral view. 

 Larva. Dorso-lateral 



view. 



130 



