LARVAE OF APHODIINAE — JERATH 47 



United States. Species dealt with in this study include Aegialia 

 blanchardi Horn and Aegialia lacustris LeConte. 



This tribe has been treated by taxonomists as a separate subfamily, 

 but study of the larvae proves beyond doubt that the subfamily 

 Aegialiinae can be included under the subfamily Aphodiinae as a 

 separate tribe. 



Larvae of the genus Aegialia bear the following similarities with 

 the larvae of other Aphodiinae: 



1. Setae on the frons like those found in the tribe Aphodiini, genera Ataenius and 



Ewparia. 



2. Antenna 4-segmented, which is characteristic of the subfamily Aphodiinae 



(in Aphodius, the first antennal segment apparently subdivided). Third 

 antennal segment apically with a sensory conical structure, fourth segment 

 small and conical. 



3. Clypeus, on either side, with three setae, as in the tribes Aphodiini and Psam- 



modiini and the genera Ataenius and Ewparia of the tribe Eupariini. 



4. Epipharynx resembling that of the Aphodiinae in shape, position, number of 



setae, and in the presence of clithra and tormae. 



5. Right mandible like that of other Aphodiinae. 



6. Maxilla similar to that of the Aphodiinae. 



7. Body and legs with the same segmentation and setal pattern as in the Apho- 



diinae. 



8. Raster with teges similar to those in the Aphodiinae. Anal lobes whitish and 



without setae. 



Genus Aegialia Latreille 



Larvae of the genus Aegialia may be characterized as follows: 

 Frons, on each side, with two short posterior frontal setae and a 

 microsensilla, a long seta at each anterior angle, a long exterior frontal 

 seta and a microsensilla, and a short anterior frontal seta and a micro- 

 sensilla. Clypeus with three setae on each side. First, second, and 

 third antennal segments subequal; third antennal segment with a 

 conical sensory area. 



Epipharynx with protophoba tristichous on the left and monosti- 

 chous on the right; dexiophoba and laeophoba monostichous ; meso- 

 phoba monostichous in the middle and bistichous on the sides. Tor- 

 mae asymmetrical, dexiotorma produced cephalad and caudad, 

 laeotorma slightl} produced cephalad. Ciepide subcircular with two 

 microsensillae on it and two on either side of it. 



Scissorial area of left mandible with Si, S2 and S3+4 and of right 

 mandible with 81+2 and S3+4. Each mandible dorsally with two or 

 three setae and ventrally with two setae. Galea ventrally with a 

 long seta and a row of four short setae. Palpifer distinct and with 

 one to three conical teeth. 



Abdominal segments 1-7 each with three dorsal annulets; each 

 annulet with a transverse row of setae. Segments 8-10 each with 



