230 The Philippine Journal of Science 1921 
truncate in a straight line, forming a sharp edge, on each side with a 
bundle of short bristles in a groove. The cocoons are used for the manu- 
facture of silk, but both the quantity and quality are negligible. Himalayas 
to Japan. - 
Jordan **® gives the following details concerning the imago 
and larva of Dictyoploca japonica: 
D. japonica Butl. (regina Stgr.) (32c). Ground-colour varying, yellow- 
ish grey, brownish yellow, or almost olive; the markings on the contrary 
fairly constant. Forewing above in the basal fourth with a reddish or 
brownish transverse line which bounds a large basal spot, and with a second 
rather diffuse line beyond the middle which touches the ocellus at the outer 
side, or stands slightly distant from it; the area bounded by the two lines 
slightly lighter than rest of the wing; ocellus oblique. Hindwing usually 
redder than the forewing, with much larger and more sharply defined ocellus. 
Below more unicolorous than above; the ocellus on the forewing with 
black pupil, on the hindwing blind. Pale specimens are f. castanea Swinh. 
Larva on Juglans, Castanea, Camphora, in captivity takes Oak, Hawthorn, 
Willow, etc. The three first stages of the larva almost alike; in the fourth 
and fifth stages the black colour confined to the sides, the warts of the 
thorax with a few black bristles between the greenish white hairs. Meshes _ 
of cocoon large. Japan (Main Island and Kyishti), Amurland, North 
China; the moth in the autumn (September and October), common. The 
silk glands of the caterpillar are sometimes employed for the manufacture 
of fishing lines. 
The type of D. japonica, male, from Yokohama (Jonas) is in 
the British Museum collection. The larva figured (Plate 2, 
fig. 6) was taken in June, 1901, at Kobe, Settsu Province, Hon- 
shu, on kunugi, dwarf oak (Quercus serrata Thunb.). It pu- 
pated on June 27, and a female imago of the pale buff form 
emerged on a date unrecorded. 
Packard * has described the larva at length, giving all the 
stages. Nawa’* and Matsumura" record the life history and 
give figures of the ova, larva, pupa, cocoon, and male imago. 
Oberthiir ** also has described the larva. 
Food plants——The food plants are as follows, and probably 
several more should be included: Ku-su-no-ki, camphor tree 
(Cinnamomum camphora Neés); kurumi, walnut (Juglans 
sp.) ; ringo, apple, (Pyrus malus L.) ; urushi, lacquer tree (Rhus 
vernicifera DC.); hakuyd, poplar (Populas alba L.); kusagi 
(Clerodendron tricotomum Thunb.). The larva, however, is 
*® Seitz’s Macrolep. Faun. Pal. 2 (1911) 218. 
“Proc. Am. Acad. Arts Sci. 39 (1904) 564. 
* Insect World (Konchi Sekai) 10 (1906) 68, pl. 3. 
* Japanese Injurious Insects (Nihon Gaichthen) (1899) 75, pl. 32. 
* Soc. France (1886) 48. 
