c:LOVKH DIJASTEHIA. 



887 



1 fiMVt' found l*;ii'is i^rccii sure dcj'tli t«i i>ri'li:inl mikI sliiult' tiH'C 

 loaf rollers, and without donht it would kill tlioso that infest tlu^ 

 clover. Its practicality however in this case is not so apparent. 

 It is to ])e hoju'd tluit ])arasites and other enemies will j>revoiit 

 tiu'se leaf rollers from heeoinin>:' very st'rious pests. 



Without donht other 'I'ortricids will he fouiul to attack the 

 ch)vei\ hut as all are so nearly alike in their character and luihits, 

 wiiat has heen said will apply in a liciu'ral way to all of tlicni. 



Drasterisi orcchtea rrsiiii. (lover Drastei'ia. 



CiriJff f.i'j)i(h>})tirti. Fdiniln Xoctiiidiv. 

 Saunders. Out. En. lieport. 1SS1, p. i;, HI. 

 Saunders. Out. En Re))ort. IST."., p. :«5. Til. 

 Fnnch. Ml. En. Rep.. Vol. Vll.. p. i:!:!. 111. 

 ("o.luili.-tt. Hi. En. Uep.. Vol. X., p. I IS. 

 Packard, (Jiiide to Study <»r Tiisi-cts, p. MIT. 



This is as conijuon as any inotli in Michitian. and tho samo is 

 triu- in nniny other States. The familiar, short, jt'rky flight re- 

 minding us (d" (he tiirer liei'tles. is seen fi'oni early sprin^;' till late 

 autumn. Thouirh so couimon, ami thoui;h with slii;ht e\ce])- 

 tion (it soini'tinu's feeds on iirass) the caterpillars feed exclusively 

 on olover. yet 1 think the insect is not considered a foe to bo 

 df-'aded. It may lie that in case of crops like the (dovei'. where 

 ]>lants are nuinhered hy tlu' million, we sulfcr more from insect 

 attack than we km)w. 



The larva is reddish-l)rown, m. irked with longitudinal lines of 

 dark, whiti' and pink color. When full jxrown it is 3 c m {\\ 

 inches) long. I'here are only three ]»airs of pi-o legs, so the cat- 

 erpillar, like others of tiic lower Noctnids, is a geometer, or 

 "measuring worm." It f;j>ins a loose cocoon, in which, as also 

 in its gait, it reminds us of the 

 true geonu^ters. The Uio th is \ 

 well rei)resented in. the fiLniro. - ^, ,„_ _„. 



The fore wings are dusky-hrown, •4-.'!^////M\-'t\i^W{ 



with darker hamls crossing tliem, 



'^^^ 



Fio. 143. 



