THE CANADIAN ENTOMOLOGIST. 157 



STUDIES IN THE LIFE - HISTORIES OF CANADIAN 



NOCTUID.^.— I.* 



BV ARTHUR GIBSON, OTTAWA, ONT, 

 MONIMA REVICTA MoRR. 



Eggs of this species were received from Mr. Theo. Bryant, of Wel- 

 lington, B. C., along with the captured 9 which laid them. They were 

 deposited on the 26th April, 1904, and hatched on the 9th May — duration 

 of egg state 13 days. 



£gg- — Spheroidal, the base flattened; pale yellowish; 0.8 mm. in 

 diameter ; about 44 ribs, cross-stride distinct. Laid singly. 



Stage I. — Length when hatched 2 mm.; pale lilac before feeding, 

 after feeding pale green. Head 0.4 mm. wide ; bilobed ; testaceous, 

 mouth-parts darker. Cervical shield concolorous with head. Body 

 cylindrical, skin smooth and shiny. Tubercles black, shiny, single haired 

 setae black. Second day after hatching indistinct stripes are noticeable on 

 the body. On the third day, under a lens, these are distinct. ; in colour 

 dull reddish, and are as follows : a stripe between tubercles i and ii, 

 another stripe, more distinct, almost midway between tubercles ii and iii, 

 and still another stripe running through tubercle iii. There is also a 

 sub-ventral stripe running through tubercle v. At this time the skin be- 

 tween tubercles iv and v is pale bluish. Feet darker than body, front two 

 pairs of prolegs aborted. Larvae loop when walking. 



Stage II. — Length, 6 mm. Head 0.65 mm. wide, rounded; pale 

 luteous, darker at vertex. Ground colour of body dark green, almost a 

 bottle-green, still darker laterally, with a decided burnt-umber tinge. 

 Dorsal stripe pale bluish ; sub-dorsal stripe of same colour, just below 

 tubercle ii ; lateral stripe, just above tubercle iii, also of same colour, but 

 not so wide or so conspicuous as the sub-dorsal stripe ; stigmatal band 

 very wide and conspicuous, extending along the whole side of the body 

 and on to the anal prolegs. Tubercles small and black, each with a black, 

 short hair. Spiracles black in front of tubercle iv. Feet concolorous 

 with venter ; prolegs darkened exteriorly. First pair of prolegs aborted, 

 the larvse still looping when walking. Later in the stage the colour of the 

 skin laterally, just above and below the stigmatal band, becomes more of 



""Contributions from the Division of Entomology, Ottawa. 

 May, 1911 



