60 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



Description: Maximum width of head capsule of third-stage 

 larva 1,52-1.62 mm. Cranium light yellowish brown, surface smooth 

 except for three depressions in a line on each side on the frons, 3-5 

 dorsoepicranial setae and 8-10 microsensillae on each side. Second 

 and third antennal segments subequal, first longer than second or 

 third. 



Epipharynx with protophoba bistichous on the left and mono- 

 stichous on right; protophoba with 17-19 microsensillae. Tormae 

 similar in size and shape, both tormae produced cephalad and caudad. 

 Crepide sub triangular to subquadrangular; epitorma asymmetrical, 

 slender, flattened apically, and bent little towards laeophoba. 



Maxillary stridulatory area with a row of 8-10 conical teeth; 

 palpifer with one or two teeth. Galea ventrally with a long seta and a 

 longitudinal row of six or seven short setae, dorsally with five setae. 

 Lacinia dorsally with a row of five long setae near the mesal edge and 

 one short seta posteriorly. 



Abdominal segments 1-5 each with three dorsal annulets; each 

 prescutum with six short setae; each scutum with three or four long 

 setae and four or five short setae on each side; and each scutellum 

 with 10-12 short setae. Each abdominal spiracle-bearing area with 

 two setae dorsally and two setae ventrally. 



Raster with teges of 36-50 hamate setae curved at their distal ends, 

 setae arranged in irregular rows with variable number of setae in each 

 row. Tegillar setae covering most of the venter of 10th abdominal 

 segment. 



Aphodius sparsus LeConte 



Figures 30, 56 



Material examined: Three third-stage larvae collected from 

 Neotoma nest at Cohna, Calif., Feb. 24, 1934, by P. C. Tmg (reared 

 adults determined by F. Blaisdell) (USNM); 14 third-stage larvae 

 reared by Paul O. Ritcher (No. 46-lOC); 20 third-stage larvae and 

 cast skins of 10 larvae reared to the adult stage, being part of a large 

 number collected from a wood rat's nest 20 feet above the ground on 

 a tree in McDonald forest, Corvallis, Oreg., May 21, 1957, by Paul O. 

 Ritcher and Manohar Jerath (reared adults determined by O. L. 

 Cartwright). 



Description: Maximum width of head capsule of third-stage larva 

 1.82-2.05 mm. Cranium light yellow to light yellowish brown, 

 surface smooth except for two depressions on each side on the frons, 

 three or four dorsoepicranial setae and two microsensillae on each 

 side. First antennal segment longer than second or third, second and 

 third subequal. Third antennal segment with a small circular sensory 

 area apically. 



