46 BULLETIN 1032, U. S. DEPARTMENT OF AGEICULTURE. 



Explanation of symbols applied to genitalia. 



Ae = fedoeagus. Hp = harpe. 



An = anellus. Si = socii. 



CI = clasper. U = uncus. 



Cn =: cornuti (spines on penis). Vm = vinculum. 



Gn = gnathos. 



Plate III. 



Rliopohota naevana: 



A. — Dorsal view of head capsule of larva, showing setal arrangement. 



B. — Lateral view of head capsule of larva, showing setal arrangement. 



C. — Arrangement of crochets of abdominal prolog of larva. 



D. — Egg, greatly magnified. 



E. — Ventral view of tenth abdominal segment of larva, showing analfork. 



F. — Labrum of larva. 



G. — Epipharynx of larva. 



Explanation of symbols applied to larva. 



A^, A^, A^, A'*=setfe and puncture of anterior group of epicranium. 



Adf\ Adf^, Adf=i=adfrontal sette and puncture of epicranium. 



ADFR=adfrontal i-idge of larval head. 



ADFS=adfrontal suture of larval head. 



Af=anal fork. 



E\ E^=epistomal setae. 



ER=epipharyngeal rod. 



ES=epipharyugeal shield. 



ET=epipharyngeal setae. 



F'', F''=frontal seta and puncture of epicranium. 



FR=frons of epicranium. 



G^ G''=genal seta and puncture of epicranium. 



L*, L''=seta and puncture of lateral group of epicranium. 



La\ La^ La'=lateral setae of labrum. 



Lp=labral pvmcture. 



LR=lou8itudinal ridge of epicranium. 



M\ M^ ]\f =median setae of labrum. 



0\ 0\ 0^= setae of ocellar group of epicranium. 



PS PS P", P''=setae and punctures of posterior group of epicranium. 



SOS SOS SO^, SO''=setae and puncture of subocellar gi-oup of epicranium. 



X==ultraposterior setae and puncture of epicranium. 



Drawings on Plates I, II (except C), and III were made under the author's 

 supervision by Miss E. Edmonston, of the Bureau of Entomology. The male 

 genitalia (PI. II, C) were drawn by Miss Ada F. Kueale, formerly of the Bu- 

 reau of Entomology. 



