PROC. ENT. SOC. WASH., VOL. 23, NO. 3, MAR., 1921 51 



character distinguishes the Rhyphidae from the other Tipu- 

 loidea. 



Table of Subfamilies of Rhyphidae: 



1. Discal cell present.. 2. 



- Discal cell absent 3. 



2. Two distinct anal veins; radial sector three-branched Trichocerinae. 

 One distinct anal vein; radial sector two-branched-- . .Rhvphinae. 



3. R2 fused with R3; vein R2-f-R3 short, entering wing margin short dis- 



tance beyond Rl; anal cell extending to wing margin ... .^Mycetobinae. 



- R2 present as a distinct vein; anal vein evanescent some distance from 



wing margin. (New subfamily, type genus Axymyia McAtee). 



Axymyinae. 



THE LARVA OF POPILLIA JAPONICA. NEWMAN 



AND 



A CLOSELY RELATED UNDETERMINED RUTELINE LARVA. 

 A SYSTEMATIC AND MORPHOLOGICAL STUDY. 



BY ADAM G. BOVING, Bureau of Entomology. 



Popillia japonica Newman belongs to the Scarabaeid tribe 

 Rutelim. In his conspectus systematicus of the larvae of the 

 series Lamellicornia Schiodte has characterized the larvae of 

 this tribe. 1 Like the entire paper of which the conspectus 

 systematicus forms a part that characterization is given in 

 Latin. Translated and in a few places slightly modified it may 

 be presented as follows, the footnotes and the textnotes in 

 parentheses or brackets being by the present author: 



Characterization of the Rutelini. 



I. Stridulating instrument formed by a dentate carina, on the dorsal side of 



the maxillary stipes, rubbing against a finely tuberculate area on the ventral 



side of the mandible (figs. 4 and 14). Antenna consisting of four joints. 



Legs all well developed, gradually increasing in length from first to third 



pair. Anterior abdominal segments dorsally with three transverse areas. 



Maxillary palp four jointed (Schiodte says, "three jointed," interpreting 



the basal joint as palpiger). No ocelli. Mandible with manducatorial 



portion (the portion with the molar or grinding structure) deeply separated 



from the scissorial portion (portion with the cutting edge) (m, s fig. 13); 



molar structure with posterior heel bearing a tuft of bristles (figs. 24, 25). 



[By the given combination of characters the Trogini, 



Geotrypini, Lucaiihii and Passa/ini sensu Schiodte 



'are excluded]. 



U. C. Schiodte: De metamorphosi Eleutheratorum observationes, Naturhist. 

 Tidsskrift, series 3, vol. 9, 1874, pp. 227-376, pi. VIII-XIX. 



