RErORT OF THE STATE ENTOMOLOGIST I905 



131 



Fig. 45" Cecidomyia virginianiae , larva, dorsal aspect of posterior extremity, 

 much'enlarged (Original) 



median, others nearly lateral. Posterior extremity with a simple 

 anal slit, and with a pair of conspicuous submedian, subcorneal 

 pseudopods, a median pair of 

 smaller tubercles lying between the 

 latter and similar sublateral ones 

 anteriorly. 



Gouty elder gall (Cecido- 

 myia s a m b u c i n. sp.) . This 

 is an irregular gnarly swelling on 

 one side of small elder stems, about 

 i^ inch long and ^ inch in di- 

 ameter. Adults were not obtained 

 Larva. The full grown larva is 

 about 3 mm long, yellowish red and 

 rather stout. Head moderately 

 prominent, enlarged at the base, 

 rounded laterally and tapering 

 rapidly to a broadly rounded apex. 

 Mouth parts very small and indis- 

 tinct. Chitinous fork or " breast- 

 bone " long, slender, basal portion 

 indistinct, anterior part broadly 

 rounded with two large, lateral, 

 blunt teeth and a smaller median 

 one. Body smooth, spiracles moder- 

 ately prominent. Anal slit simple, 

 extending across most of the pos- 

 ^iambuci^°%^aii^ tcrior. extremity, which latter bears 

 a few slender, transparent, spiny 

 processes. 



4-1 I ' 



f 



natural size (Origi- 

 nal) 



Fig. 47 Cecido- 

 myia sambuci, 

 larval breastbone, 

 enlarged (Original) 



