170 



STNTOMIDjE. 



Genus ISANTHRENE. 



Isanthrene, Hiibn. Verz. p. 125 (1827) 



Type. 

 incendiaria. 



Proboscis well developed ; palpi obliquely upturned, the 2nd joint reaching 

 vertex of head and moderately scaled, the 3rd well developed and obtuse ; 

 autennre with the shaft dilated from beyond base to near apex, bipectinate, 

 with moderate branches dilated at extremity and ending in a bristle ; tibiae 

 with the spurs moderate ; abdomen with lateral tubercles on basal segment, 

 male with ventral valve covering basal segments. Foi-e wing with vein 3 from 

 well before angle of cell ; 4, 5 separate at origin or from a point, 6 from upper 

 angle; 7, 8, 'J, 10 stalked; 11 from cell. Hind wing with the lower part of 

 cell very short, the upper discocellular oblique ; veins 2 and 4 on a long stalk ; 

 3 and 5 absent ; 6, 7 from upper angle. 



Sect. I. Hind wing with the discocellulars oblique throughout. 



A. Abdomen with dorsal series of black spots felderi. 



B. Abdomen with black bands on last five segments pentago)ia. 



339. Isanthrene felderi. 



Bydadia felderi, Druce, P. Z. S. 1883, p. 377 ; id. Biol. Oentr.-Am., Het, 

 i. p. 63, pi. 7. f. 18 ; Kirby, Cat. Het. p. 146. 



Head, thorax, and abdomen greenish yellow ; palpi and legs 

 orange ; antennae black ; neck black ; thorax with black spots ; 



patagia with black mark at 

 base ; abdomen with dorsal 

 series of black spots diminish- 

 ing distally, the basal seg- 

 ment with black bars on 

 its lateral tubercles ; wings 

 hyaline, the veins and 

 margins black. Fore wing 

 with subcostal orange stripe, 



the base of inner margin yellow ; the terminal band expanding 



widely on apical area and dentate at vein 2. 



Hah. Mexico, Jalapa {Trujillo), Orizaba (Flohr), Atoyac (H. H. 



Smith, Schumann) ; Guatemala {Rodriguez, Champion) ; Costa 



Rica {Underwood); Godman-Salvin Coll. Exp. 30 miUim. Type t 



in Coll. Druce. 



Fig. Si.— Isanthrenp felderi, (^ . 



*340. Isanthrene pentagona. (Plate VI. fig. 19.) 



Tsanthrene pentagona, Schaus, J. N. Y. Ent. Soc. vi. p. 139 (1898). 



(S . Head, thorax, and abdomen yellow ; antennae dark except at 

 base ; frons with white hairs ; a black patch between antennae ; 

 teguloe banded with black ; patagia edged with black ; thorax with 

 blue-black stripe ; abdomen with slight black line at base of ] st 

 segment followed by three streaks, the last five segments with black 

 bands, broad above, narrow below ; wings hyaline, the veins and 

 margins narrowly black. Fore wing with reddish streaks on costa 

 and inner margin ; cilia of both wings reddish. 



Bab. Peku. Exp. 24 millim. Type f in Coll. Schaus. 



