NEW SPECIES OF NOCTUID^ FROM FORMOSA. 219 



do I recollect or know how far the habitat of A. strigosa was or 

 is included in the now preserved portion of the Fen. A. strigosa 

 feeds on hawthorn, and why it should be so localised is not very 

 obvious. Various reasons may be suggested, climatic and others. 

 There is one somewhat important one, as to which I feel tolerably 

 certain, A. strigosa pupates in a cocoon which it forms by 

 burrowing into rotten wood, and consequently it cannot thrive 

 unless the trees on which it lives are old and possess some dead 

 portions that have some fairly rotten wood. No doubt larvae on 

 other hawthorn trees will find places in which to pupate, but 

 such places will be unsuitable, and will result in the greater 

 number of individuals who do so perishing in the winter. Not 

 impossibly stumps of cut reeds may afford as good substitutes 

 as any. 



The point, however, on which I desire for the moment to 

 insist, is that old hawthorn trees should be jealously guarded, 

 and that sufficient younger trees should be spared in order that 

 in due time they may replace the older ones as these perish, and 

 that none of the old ones and not all the younger shall be 

 included in the sweeping condemnation of " low shrubby trees." 



NEW SPECIES OF NOCTUID^ FEOM FOEMOSA. 

 By A. E. WiLEMAN, F.E.S. 



Trachea coiijuncta, sp. n. 



(7 . Head and thorax whitish, the latter marked with dark brown 

 on edges of collar and patagia ; antennae bipectinate except at tip. 

 Fore wings whitish, tinged and clouded with ochreous brown ; subbasal 

 line black, double, wavy, not clearly defined ; antemedial line black, 

 double, sinuous ; postmedial line black, double, strongly curved from 

 costa to middle, thence sinuous to dorsum ; a broad obhque blackish 

 band from costa to about middle of a black bar connecting antemedial 

 and postmedial lines, and a narrow oblique blackish band from the 

 connecting bar to dorsum ; orbicular and reniform stigmata whitish, 

 finely outlined in black and enclosing brownish marks ; a blackish 

 quadrate mark (extending to costa) between the stigmata ; three 

 blackish marks on terminal third of the wing — one at costal end of 

 postmedial line, one (the largest) below middle of postmedial, one 

 below apex ; fringes chequered with black. Hind wings white with 

 blackish discoidal dot and two dusky transverse lines beyond; fringes 

 grey brown. Under side whitish ; fore wings suffused with dusky 

 except on margins, the blackish postmedial line is preceded by a 

 blackish cloud on costal area ; hind wings have a black discoidal 

 lunule and blackish transverse line as above. 



Expanse, 34 millim. 



Collection number, 1751. 



A male specimen from Eantaizan, May 9th, 1909. 



