29G 



MONARDIA Sp. ? 



Larva. — Length, 3-4 mm. Body cylindrical, the segments clearly 

 defined. Head (PI. XLIV, Fig. 3) more fully developed than in the 

 preceding species, the antennae much stouter. Spatula tridentate, 

 heavily chitinized ; prothoracic spiracles larger than abdominal pairs. 

 Abdominal spiracles small, present on the basal 7 segments; apical 

 pair small, not elevated; locomotor spinules minute, in numerous 

 transverse series on anterior portion of all ventral abdominal seg- 

 ments. 



Pupa (PI. XLIV, Fig. 7). — Length, 2 mm. 



Head with 2 long hairs between bases of antennae and one hair 

 on each eye ; palpi curved along posterior margin of eye. Thorax with 

 4 long hairs. Legs longer than wings, the hind pair reaching beyond 

 middle of fourth abdominal segment and distinctly beyond apices of 

 mid pair, the latter slightly longer than fore pair. Abdomen without 

 armature; spiracles indistinguishable. 



Described from specimens submitted by Dr. E. P. Felt, from New 

 York State. 



Rhabdophaga podagrae Felt? 



Ehahdophaga podagrae Felt, Bull. 124 N. Y. State Mus., p. 355. (1908) 



A large number of specimens that appear to belong to this species 

 were reared here from slightly swollen willow twigs by members of 

 the office staff some years ago. The pupal exuvia differ from those of 

 the following species, reared from Bidens frondosa, in having only 2 

 strong thorns on head (PI. XLIV, Fig. 8) — lacking those on middle 

 and lower margin of face. The thoracic respiratory organs are sessile. 

 The abdomen has no stiff spinules on the dorsum, and the apices of 

 the fore tarsi do not extend beyond apices of wings (PI. XLIV, Fig. 

 2). 



Rhabdophaga sp. ? 



A number of specimens of a species which probably belongs to 

 this genus were reared from Bidens frondosa some years ago. The 

 pupal exuvia present the following characters. 



Pupa. — Head with a pair of very strong acutely pointed thorns at 

 base of antennae (PI. XLIV, Fig. 5), a much smaller pair below 

 these, on center of face, which are curved upward and fused nearly 

 to apices, and 3 small upwardly directed spines, on a common base, on 

 lower portion of face (PI. XLIV, Fig. 4). Thoracic respiratory 

 organs bristle-like, elevated and verv slender ; dorsum of thorax glos- 



