118 



PSYCHE. 



[October, 1900. 



Ins glabra) ; the last four are new food 

 plants. Mytilaspis uhni L. (Sj-n. AT. 

 pomoruin Bouche) has now been recorded 

 throughout the world from 46 different 

 food plants. I have it from 22 in 

 Mass. Chinnaspis furfuriis Fitch is 

 found on 14 different food plants in 

 Mass. 



(22) Aulacaspis elcgam Leon, on 



Cycas rcvohita ; this together with Leca- 

 niiDii hemisphaericum Targ. and Dadylo- 

 piin /oHgispinits, were on the same plant 

 in the Springfield natural history mu- 

 seum. Previously recorded Coccids 

 found at Springfield are Gossyparia 

 ubni, Phenacoccus aceris, Ripersia ki/igii, 

 Lecariium yiigrofasdatum and Mytilaspis 

 ulmi. 



LIFE HISTORIES OF NORTH AMERICAN GEOMETRIDAE. — XV. 



BY HARRISON G. DYAR, WASHINGTON, D. C. 



Racheospila saltusitria Hiilst. 



Egg (dissected from motli). Elliptical- 

 strongh flattened above and below, but 

 rounded, one end depressed from side view ; 

 shagreened, scarcely reticulate ; size .6 X -5 

 X .3 mm. Color, orange red. 



Stage I. Head round, slightly bilobed, 

 pale brownish ; width .25 mm. Joint 2 high, 

 collared in front, the collar notched centrally ; 

 otherwise cylindrical, smooth, slender, the 

 segments bent angularly when walking ; pale 

 yellowish, shining ; feet normal, short. Skin 

 rather sparsely minutely granular. No tuber- 

 cles or setae except on the anal feet and a pair 

 on anal plate, pale, slightly enlarged at tips. 

 Anal plate long, pointed behind, round 

 before with two conical, thick, subanal 

 prongs, approximate and longer than the 

 plate. 



Stage II. Head rounded, the lobes 

 bluntly highly produced, a wide notch be- 

 tween ; jellowish, sutures and mouth brown, 

 ocelli black; width .33 mm. Body cylindrical, 

 joint 2 with two high cones in front; anal 

 plate long, rounded, the thick subanal prongs 

 projecting beyond. Greenish yellow, smooth, 

 no marks, minutely frosted. Later an inter- 

 rupted dorsal brown line appears. 



Stage HI. Head lobes sharply conically 

 produced ; green, shaded with brown over the 

 sides; width .55 mm. A high double point 

 on joint 2 ; anal plate elliptical, pointed, the 

 thick subanal prongs reddish. xVll else 

 smooth, subgranular frosted, green, a brown 

 dorsal line represented by dashes in tlie in- 

 cisiu'es. 



Stage IV. Head tlat before, the lobes pro- 

 duced into thick conical horns, slightly con- 

 stricted centrally; clypeus rather high; dark 

 brown, face frosted with whitish, and with 

 frosted streaks over the lobes especially be- 

 hind; mouth black brown; width i mm. 

 Rody slender, uniform, a large single green 

 hump on joint 2 with two approximate, dark 

 brown horns on the summit, a little reciu'ved 

 outwardly. Anal plate long, pointed behind, 

 excavate before ; shields of anal feet large, 

 triangular, excavate below posteriorly. Feet 

 of joint lo small, approximate to the anal 

 ones. Body stiff, angular when walking, 

 dark green, very faintly frosted with white 

 granules posteriorly; a series of dark vinous- 

 brown intersegmental dashes, frosty edged, 

 connected by a darker green stripe; on joints 

 lo to 12 these are contracted to a continuous 

 line. Anal plate green ; thick prongs vinous, 



