zyg^eninte. 229 



Key to the Subfamilies. 



a. Mouth-parts present. 



a'. Antennae not flabellate at tip 1. Zygamince. 



b'. Antennae highly or somewhat flabellate at tip. 2. Chalcosiince. 



b. Mouth-parts wanting 3. Phaudince. 



Subfamily ZYG^ENIN^]. 



Small or medium-sized moths, of semidiurnal habit and rather 

 elongate narrow wings. Antennae simple, ciliated, or pectinated, 



Fig. 144. — Larva of Zygcena filipendulce. {. 



with short branches. Palpi short and porrect. Legs with the 

 spurs almost always minute or wanting. 



Larva short and cylindrical. 



Pupa in a close-woven silken cocoon. 



Key to the Genera. 



a. Antennae dilated distally. Fore wing with 



veins 9, 10, 11 stalked together 1. Zygcena, p. 230. 



b. Antennae not dilated distally. 



a . Fore wing with all the veins from the cell. 

 a 1 . Hind wing with vein 6 absent. 

 a 3 . Wings short and broad. 



a 1 . Hind wing with all the veins from 

 the cell. 

 a 5 . Hind tibiae with one pair of 



spurs; antennae of male with [p. 231. 



few branches , 2. Dendrocera, 



b 5 . Hind tibiae with two pairs of 



spurs ; antennae of male with [p. 232. 



many branches 3. Chrysartona, 



6 4 . Hind wing with veins 3 and 4 [p. 233. 



stalked 4. Brachartona, 



b 3 . Wings long and narrow. 

 # 4 . Hind wing with vein 5 remote 

 from 7. 

 a 5 . Fore wing very narrow ; an- 

 tennae of male pectinated. 



a s . Palpi long 6. Artona, p. 234. 



b e . Palpi very short 7. Tasema, p, 236. 



b 5 . Fore wing broader; antennae of 



male simple 18. Arjeocera, p. 244. 



b*. Hind wing with vein 5 arising 



close to 7 19. Arachotia, p. 245. 



e' ! . Fore wing produced at apex and. 



broad 13. Phacusa, p. 240. 



