4. Abdomen more or less crested Spodoptera. 



Abdomen not crested Caradrina. 



(II) PLUSIADAE. 



1. Abdomen crested 2. 



Abdomen not crested 3. 



2. Abdomen with small dorsal tuft near base Hypenodes. 



Abdomen with 3 large dorsal tufts Plusia. 



3. Palpi porrect 4. 



Palpi upturned 5. 



4. Hind wings with 4 and 5 parallel Nesamiptis. 



Hind wings with 4 and 5 not parallel Hypocala. 



5. Forewings with termen angulately produced in middle 



Cosmophila. 



Forewings not so produced 6. 



6. Cell of hind wing very short Adrapsa. 



Cell of hind wing normal " Simplicia. 



(B) NOTODONTINA. 



1. Hind wings with 5 imperfect or obsolete. (IV) SELIDOSEMIDAE. 

 Hind wings with 5 fully developed 2. 



2. Antennae thickened towards middle or posteriorly 



(V) SPHlNGIDAE. 



Antennae not thickened (Ill) HYDRIOMENlDAi^. 



CIII) HYDRIOMENIDAE. 



1. Face rough-haired Dasyuris. 



Face with conical tuft of scales 2. 



2. Antennae in male unipectinated Prcgncstola. 



Antennae in male bipectinated Xanthorhoe. 



Antennae in male ciliated 3. 



3. Abdomen crested Eucymatoge. 



Abdomen not crested Hydriomena. 



(IV) SELIDOSEMIDAE. 



1. Hind wings in male above with median streak of erect hairs, 



apex ot fore wing strongly rounded Sisyrophyta. 



Hind wings in male clothed with long hairs towards dorsum, 



apex of fore wing produced Acrodrepanis. 



Hind wings in male normal, apex not peculiar 2. 



2. Fore wings in male with large patch of modified scales in 



cell beneath Nesochlide. 



Fore wings in male not as above 3. 



3. Posterior tibiae in male dilated, containing hair-pencil, size 



more than 25 mm Scotorythra. 



Posterior tibiae in male not dilated, without hair-pencil, size 

 25 mm. or less Tritocleis. 



(V) SPHINGIDAE. 



1. Thorax with short double posterior tuft Sphinx. 



Thorax without above ,, Deilephila. 



