512 SEASONS OF INSECTS. 
ber. For the larve they take the beginning of April, 
June, the beginning of July, and September. ‘They dig 
for pupa late in July, and in January and February. 
I shall lastly make a few observations upon the times 
of action and repose of insects, the knowledge of which, 
as far as it can be obtained, is of essential use to the in- 
dustrious collector. Entomologists have divided the Le- 
pidoptera, with a view to this circumstance, into dzurnal, 
crepuscular, and nocturnal ; or butterflies (Papilio L.), 
hawkmoths (Spin L.), and moths (Phalena L.). ‘These 
terms may be applied to insects in general. 
i. Diurnal insects are abundant. Butterflies in parti- 
cular fly generally at no other time: they accompany the 
sun in his course, and before he sets disappear. Some 
other Lepidoptera, though not so named are day insects: 
—such are the 2ygenide, &c. amongst the hawkmoths ; 
and amongst the moths, Noctua Gamma, the Phytometre 
solares of Haworth?, and some others. Numberless Co- 
leoptera belong to this section. The Donacie fly only 
when the sun is out and the air is warm; they are then 
extremely agile and difficult to take. Some Hoplie swarm 
in the day before noon, and then disappear”: most of the 
tetramerous beetles also appear to be diurnal. The Zz- 
bellulina and many other Neuroptera may also be so 
termed; and the Hymenoptera almost universally, with the 
sole exception of the Formicide*. Amongst the Diptera, 
if we leave out the Tipularie Latr., the rest will be found 
for the most part to belong to the present section. 
i. Crepuscular insects, strictly speaking, are those that 
* Lepidopt. Britann. 263—. » Linn. Trans. y. 256. 
¢ Vou. II. p. 96—. 
