7 6 



ENTOMOLOGY 



Not all the hairs of an insect are sensory, however, for many of them 

 have no nerve connections. 



119 



FIGS. 116-125. Types of antennal sensilla, in longitudinal section (excepting Figs. 119 

 and 120). Fig. 116, sensillum coeloconicum; 117, creloconicum; 118, basiconicum; 119, 

 styloconicum; 120, chseticum; 121, trichodeum; 122, trichodeum; 123, placodeum; 124, 

 ampullaceum; 125, ampullaceum; c, cuticula; /;, hypodermis; n, nerve; s, sensory cell. 

 Figs. 116, 118, 121, 123, 124, honeybee, Apis mellifera; 117, 119, 122, moth, Fidonia piniaria; 

 1 20, moth, Ino pruni; 125, wasp, Vespa crabro. After SCHENK. 



In blind cave insects the antennae are very long and are exquisitely 

 sensitive to tactile impressions. 



Taste. The gustatory sense is unquestionably present in insects, as 

 is shown both by common observation and by precise experimentation. 



