106 PAPERS ON CEREAL AND FORAGE INSECTS. 
DESCRIPTION. 
THE LARVA. 
(Fig. 41.) 

Fic. 41.—The legume pod maggot (Pegomya planipalpis). Larva: a, Side view; 6, oblique aspect of head; c, 
thoracic spiracle; d, e, pharyngeal hooks, lateral and dorsal aspect; /, dorsal aspect of caudal segment; 
g, anal spiracle. a, Much enlarged; b-g, highly magnified. (Original.) 
Larva cream-white, 7.9 mm. in length and 1.9 mm. in diameter. Broadly blunt 
posteriorly, conically tapering to anterior end. Hook jaws black. At base of second 
thoracic segment a pair of fan-shaped thoracic spiracles which are 
pale yellow and ten-lobed. Anal spiracles on rather long papilli- 
form tubercles; spiracular orifices of each spiracle three in number 
and arranged to form a letter T, the stem directed laterad and 
slightly ventrad. Four small tubercles below the spiracles are ar- 
ranged in a row across the end of the caudal segment, the outer 
pair the larger. In front and to the side of this row isa pair of 
larger tubercles and in front of this pair is a ring of twelve tubercles 
around the segment; the two dorso-lateral and the two ventro-lateral 
tubercles large and conspicuous, the others smaller. Ventral swell- 
ings on segments 3 to 9, inclusive, armed with many small spinous 
papille. 

Fic. 42.—The 
legume pod mag- 
: f got: Puparium. 
(Fig. 42.) Much enlarged. 
(Original. ) 
THE PUPARIUM. 
Puparium ferruginous, dark brown at ends. Cylindrically oval, 
finely wrinkled. Hook jaws of larva visible. Length 6.4 mm.; width 2.3 mm. 
