LARVAE OF APHODIINAE — JERATH 57 



Chapin (USNM); 12 third-stage larvae collected in cow dung at 

 Lexington, Ky., Apr. 24, 1944, by Paul O. Ritcher (FOR); 15 third- 

 stage larvae, associated with adults, collected in cow dropping at 

 Salem, Oreg., July 11, 1955, by Manohar Jerath; 15 third-stage 

 larvae, obtained by confining the adults of Aphodius fimetarius with 

 fresh cow dung during spring of 1956 at Corvallis, Oreg., by Manohar 

 Jerath. 



Description: Maximum width of head capsule of third-stage 

 larva 2.05-2.31 mm. Cranium yellowish brown to dark reddish 

 brown, surface smooth except for three depressions in a line on each 

 side on the frons, three or four dorsoepicranial setae and three micro- 

 sensillae on each side. First and second antennal segments sub- 

 equal, third shorter than first or second. Third antennal segment 

 with a small conical sensory structure. 



Epipharynx with protophoba bistichous or tristichous on left 

 and monostichous on right; protophoba with 17-21 microsensillae. 

 Tormae not similar in size and shape, dexiotorma produced cephalad 

 and caudad, laeotorma only produced cephalad. Crepide subquad- 

 rangular; epitorma asymmetrical, flattened apically, and bent 

 towards laeophoba. 



Maxillary stridulatory area with an irregular row of 14-18 conical 

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

 seta and a longitudinal row of 17 short setae, dorsally with seven 

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

 edge and one short seta posteriorly. 



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

 prescutum with eight short setae, each scutum with 4-6 short setae 

 and 3-5 long setae on each side, and each scutellum with 10-12 short 

 setae. Each abdominal spiracle-bearing area with two setae ventrally 

 and one or two setae dorsally. 



Raster with teges of 55-90 short setae curved at their distal ends. 

 TegiUar setae scattered irregularly on the venter of 10th abdominal 

 segment; four minute setae anterior to the tegillar setae. 



Aphodius aleutus Eschscholtz 



Material examined: Nine third-stage larvae obtained by con- 

 fining adults of A. aleutus Eschscholtz with deer droppings from 

 August to September 1955 at Corvallis, Oreg.; six third-stage larvae 

 collected at Mary's Peak, 14 miles west of Corvallis, Oreg., Oct. 14, 

 1956, by Manohar Jerath (reared adults identified by O. L. Cart- 

 wright) . 



Description: Maximum width of head capsule of third-stage 

 larva 1.52-1.68 mm. Cranium light yellowish brown to yellowish 

 brown, surface smooth except for three depressions in a row on each 

 side on the frons, four or five dorsoepicranial setae and three or four 



