1052 
DATANA. By Dr. M. Drattdt. 
cingasii. 
ministra. 
californica. 
drexelii. 
major. 
floridana. 
palmii. 
modesta. 
perspicua. 
The subfamily is subdivided into 2 rather heterogeneous parts: the ,,moonbird‘‘-like species of Datana 
and Ichihyura (Pygaera), and the green Rosema with quite dissimilar imagines, while their larvae — as far 
as they are known — are green with short hair, their structure and behaviour being otherwise very much like 
that of the Ichthyura- larvae. 
155. Genus: Datana Why. 
<J antennae not pectinated, only ciliated; palpi short and obtuse, appressed to the frons, the 2nd joint 
covered with long tufty scales; the broad thorax is densely haired. Neuration exactly like that of the genus 
Nadata. Femora and tibiae with dense shaggy hair. The larvae exhibit the same shape and colouring as those 
of the Phalera, being black or brown with numerous yellow longitudinal stripes; their behaviour is also the 
same, the head and anal end being raised when in repose. Quite a number of very similarly looking and there¬ 
fore not easily discernible species; mostly from North America. 
Type of genus: D. ministrci Drury. 
D. angusii Grt. & Rob. (158 f) is distinguishable by the colour of the forewings being quite smoke-brown 
or blackish-brown. Here and in the 3 next species, the distal margin is somewhat undulate-dentate. The mark¬ 
ing is otherwise exactly the same as in ministrci. Similarly dark brown colour is only exhibited by integer- 
rima , but the distal margin of its forewing is even, not undulate-dentate, and the hindwing is much lighter; 
besides, angusii has less strewn wings, and the transverse lines are not bordered with a lighter colour. The 
larva is black, with 4 whitish-yellow longitudinal lines on each side, and red abdominal legs and red bases of 
the thoracic legs; the scanty side-hairing is whitish-grey. It lives on species of nuts (hickory and walnut), but 
also on birches and lime-trees in July and August, the imago in April till July. Canada to Illinois. 
D. ministra Wkr. (158 f). Forewing reddish cinnamon, mesothorax ochreous in front, warming into 
chestnut brown behind, hindwing light straw-coloured. Lighter than angusii, but darker than californica, 
smaller than drexelii and major , with less distinct, or absent, small discal spots, without the dark costal-mar¬ 
ginal shadow of drexelii, the hindwings mostly lighter than in major. Larva black with 4 broad, more greenish- 
yellow longitudinal lines on each side, the ventral legs and the bases of the thoracic legs being reddish-yellow; 
hair longer and white. It lives gregariously on nearly all the deciduous trees and pupates in the earth without 
a cocoon. Canada to California. 
D„ californica Riley is almost the same, but much lighter, more pale straw-coloured with a very faint 
reddish tint. Larva on apple and plum, very similar to that of angusii, but with 5 more lemon-coloured longi¬ 
tudinal lines on each side, abdominal legs greenish-yellow. 
D. drexelii Edw. (158 f) is larger than ministra, the margin somewhat less distinctly undulate-dentate, 
marked like ministra, but with a very distinctly contrasting, darkened costal-marginal area; the colour is 
brownish ochre, the thoracal spot darker than in ministra, the discal spot large and distinct, darker than the 
lines. Hindwing darker than in ministra. . Larva very much like the preceding ones, black with lemon-coloured 
longitudinal lines, the neck-shield and the first half of the first segment quite honey-coloured, also the last 
abdominal segment almost quite yellow, the abdominal legs and the bases of the thoracic legs being yellow, 
too. It lives on Hamamelis and Vacciniae, also on lime-trees and Sassafras. New York, New Jersey. 
D. major Grt. & Rob. (158 f). The species following now exhibit an entire, smooth margin of the fore¬ 
wing. A large species with yellowish tan-coloured wings, somewhat darker than in ministra, with darker hind- 
wings than in drexelii, discal spot large and distinct as in drexelii, but without its contrasting costal-marginal 
shadow. Larva black with very broad, frequently interrupted yellowish-white or dark yellow longitudinal 
stripes; head, abdominal legs and the bases of the thoracic legs from orange brown to mahogany-red. It lives 
on Andromeda ligustrina and mariana. Atlantic States. 
D. floridana Graef (158 f) is smaller than major. Forewing dark brown with a slight purple tint, the 
lines therefore not very distinct, but with a prominent discal spot. Larva somewhat duller black, head and 
abdominal legs mahogany-red, the lines yellow. It lives on Andromeda mariana. Florida. 
4 D. palmii Bent. (158 g) is like the preceding, but lighter, the lilac whitish ground of the forewing den¬ 
sely strewn with brown, with a browner costal-marginal shadow, only the lines 1, 2 and 5 distinct, the two 
others feeble, discal spot more extinct; it may not differ specifically from floridana. Larva like that of floridana, 
but the head is more orange red, the lines are lighter yellow; on Vaccinium stamineum. Atlantic States. 
D. modesta Bent, has a traceably undulate-dentate distal margin of the dark hazelnut-brown forewing 
without a darker costal-marginal shadow, with quite indistinct lines, but a distinct blackish discal spot; re¬ 
markable for the yellowish ochreous thoracal spot which is lighter than the rest of the thorax. Larva appar¬ 
ently still unknown. Expanse of wings: 51 mm. Florida. 
D. perspicua Grt. & Rob. (158 g). Thorax and forewing reddish-yellow, thoracal spot ochreous, warming 
into tan-colour behind; forewing scantily strewn with brown except the costal-marginal area; the lines and 
