MORPHOLOGY OF THE LARVAL HEAD 

 OF SOME CFIIRONOMIDAE 

 (DIPTERA, NEMATOCERA) 



By FRANCOIS J. GOUIN 



Musee Zoologiqite dc I'Universite et de la Ville de Strasbourg 

 Strasbourg, France 



Morphology must be intimate zvith junction. 

 R. E. Snodgrass. 



INTRODUCTION 



The present paper is a continuation of a study of the anatomy oi 

 Chironomidae larvae. The first part of the study ^ related to Chirono- 

 nius larvae, their structural and functional relationships, and the 

 morphological interpretation of the structures. In this paper are 

 presented the results as related to Orthocladiinae, Podonominae, and 

 Tanypinae. 



I beg Dr. R. E. Snodgrass to accept this humble contribution as a 

 tribute which I am honored to offer to the worker whose numerous 

 papers have greatly contributed to the development of entomorphology. 



Acknowledgments are made to Professor Dr. Hfabe (Brno) for 

 having furnished two preparations in toto of the head of Protanypus 

 morio Zett. (e coll. Zavrel), to Miss Marguerite Gouin for the trans- 

 lation into English, and to Miss Helen Sloan for the revision of 

 the text. 



ORTHOCLADIAN AND PODONOMIAN STRUCTURES 



ORTHOCLADIAN BUCCAL STRUCTURE 



The many aquatic and terrestrial species of the subfamily Ortho- 

 cladiinae (s.l.), are distributed among numerous forms grouped 

 around genera Orthocladius, Diamesa, Corynoneura, and Cliinio 

 (Goetghebuer, 1932).- We shall choose as a typical form of the 

 structure called "lasiophagous" the very common larva of Cricotopus 

 gr. sihestris Fabr. (="Eucricotopus silvestris-Gruppe" of Thiene- 

 mann), "lasiobiontic" species (Meuche), which is characteristic of 



^ To be published by the Societe Entomologique de France (in press). 

 - See note at top of list of references. 



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