LARVAE OF APHODIINAE — ^JERATH 59 



Raster with teges of 32-38 hamate setae arranged in five or six rows, 

 with varying number of setae in each row; fom* minute setae anterior 

 to the tegillar setae. Raster mostly covered by setae. 



Aphodius vittatiis Say 



Figure 77 

 Material examined: 16 third-stage larvae, associated with adults, 

 collected in cow manure at airport, Corvallis, Oreg., June 9, 1955, by 

 Manohar Jerath (associated adults determined by O. L. Cartwright) ; 

 15 third-stage larvae, associated with adults, collected in cow manure 

 at Oakville, Oreg., July 1, 1955, by Manohar Jerath; 20 thu-d-stage 

 larvae and cast skins of several third-stage larvae reared to the adult 

 stage, being a part of many collected at Talent, Oreg., May 31, 1956, 

 by Paul O. Ritcher (FOR) ; 23 third-stage larvae and cast skins of 

 several third-stage larvae reared to the adult stage, being a part of 

 many collected three miles north of Cabin Lake, Lake County, Oreg., 

 July 30, 1957, by Paul O. Ritcher and Manohar Jerath (No. 57-lOa). 



Description: Maximum width of head capsule of third-stage 

 larva 1.12-1.25 mm. Cranium light yellowish brown, surface smooth 

 except for four depressions in a line on each side on the frons, three 

 dorsoepicranial setae and two microsensillae on each side. Second 

 and third antennal segments subequal, first segment longer than 

 second or third. 



Epipharynx with protophoba bistichous on left and monostichous 

 on right; protophoba with 13-16 microsensillae. Tormae similar in 

 size and shape, both tormae produced cephalad and caudad. Crepide 

 subtriangular; epitorma asymmetrical and slender. 



Maxillary stridulatory area with an irregular row of 5-10 conical 

 teeth; palpifer with one or two teeth. Galea ventrally with a long 

 seta and a longitudinal row of eight short setae, dorsally with five 

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

 edge and one short seta posteriorly. 



Dorsal annulets of abdominal segments 1-5 with setation as follows : 

 each prescutum with six short setae, each scutum with two or three 

 long setae and four or five short setae on each side, each scutellum with 

 eight short setae. Each abdominal sphacle-bearing area with two 

 setae ventrally and one or two setae dorsally. Abdominal segments 

 6-9 broader than segments 1-5. 



Raster with teges of 51-81 short setae arranged more or less in 

 irregular rows, with varying number of setae in each row. 



Aphodius sp. 



Material examined: Five third-stage larvae and one second- 

 stage larva collected in Formica nest 8 miles east of Silver Lake, 

 Oreg., May 16, 1957, by Paul O. Ritcher. 



505622—59 2 



