THE MALARIAL MOSQUITO 



115 



differentiation; may be longer than proboscis; clubbed in male 

 Anopheles. 



The parts ensheathed in proboscis are long, slender, piercing organs 

 except in the Corethrin^e, consisting of : — 



Proboscis 



Antennae 



PaTpi ' 



Eyes'' 

 Occiput ~" 



Protlnoracic 



lobes 

 Mesothorax-""' ^ 



Scuteilum — 

 Mcto thorax 



orMctaootuiD 



First abdomin'oL 

 segment 



Abdomen 



Eosal 



lobes of Q .. , ., , 



+ Male genitalia 



Basal 

 lobes 



Clasper. 



proboscis 



Palpi 



Antennae. 



Basal lobes ofantennae 



Prons 



Vertex 



Eyes 



Occiput 

 Nape 



v-^^- tarsal 

 ungues ^4^ 



Diagram showing the structure of a typical mosquito. (Theobald.) 



(i) A Stout-pointed epipharynx, grooved ventrally. 



(2) A slender hypopharvnx, which is itself an efferent tube for the 

 saliva; forms when applied to the epipharynx a groove known as the 

 afferent suctorial tube. 



