LARVAE OF APHODIINAE — JERATH 79 



with one or two setae. Brustia poorly developed on right mandible. 



Maxillary stridulatory area with an irregular row of 21-24 conical 

 teeth facing cephalad; small toothlike markings behind the plectrum 

 and on cardo. Galea ventrally with a long seta and a row of four 

 or five short setae. 



Abdominal segments 1-8 each with three dorsal annulets; each 

 annulet with a transverse row of setae except the last annulet of 

 segments 6-8. On the annulets of segments 1-5, each prescutum 

 with six short setae, each scutum with four long setae and three 

 short setae on each side, and each scutellum with 10 short setae. 

 Segments 7 and 8 broad; 9 and 10 narrow, each with two transverse 

 rows of closely placed setae but dorsa not divided. 



Raster with teges of 34-43 hamate setae curved at their outer 

 ends; three long and slender setae on either side. Lower anal lobe 

 divided into two sublobes remote from each other. 



Ataenius platensis (pianchard) 



Material examined: Three third-stage larvae and three second- 

 stage larvae reared in cow manure Sept. 2, 1942, at Clemson, S.C., 

 by O. L. Cartwright (USNM); three third-stage larvae reared in 

 cow dung and sand Nov. 18, 1942, by O. L. Cartwright (USNM). 



Maximum width of head capsule of third-stage larva 1.06-1.12 mm. 

 Cranium light yellow, surface smooth. Three dorsoepicranial setae 

 and two microsensillae on each side. Frontal sutures distinct. Cly- 

 peus divided into a smaller preclypeus and large postclypeus. 



Epipharynx with clithra enlarged mesally; protophoba bistichous 

 on left and monostichous on right, with 15-17 microsensillae; meso- 

 phoba polystichous. Crepide small and subsquare; epitorma asym- 

 metrical and flattened apically. 



Mandibles light yellowish brown with scissorial and molar area 

 dark brown. Each mandible dorsally with two setae, ventrally with 

 a single short seta. Brustia poorly developed on right mandible. 



Maxillary stridulatory area with an irregular row of 20-25 conical 

 teeth facing cephalad; small toothlike marldngs behind the plectrum 

 and on cardo. Galea with a long seta and a row of four short setae. 



Abdominal segments 1-6 each with three dorsal annulets; each 

 annulet with a transverse row of setae except the last annulet of 

 segment 6. On the annulets of segments 1-5, each prescutum with 

 six short setae, each scutum with three long setae and four short 

 setae on each side, and each scutellum with 10 short setae. Abdom- 

 inal segments 7 and 8 broad, each segment with two dorsal annulets 

 and each annulet with a transverse row of setae. Segments 9 and 10 

 narrow, each with two transverse, closely placed rows of setae but 

 dorsa not divided. 



