Attacus species are not especially difficult to rear if certain conditions are met; in particular warmth and humidity. The cocoons are, of course, pretty large and so is the adult wingspan, so more space is required than is normal for most other species. For cocoon emergence a suitable cage is needed. Although I now use a much more sophisticated hatching-box, the old tea chest and light bulb served me very well for many years, and indeed, if there is any pressure of space, or a conflict of required environments, it still gets put to good use on the odd occasion. Simple and very cheap to construct, I suppose it could be used for many species in different stages, but it has always been my Atlas-only-pupae-emerging- incubator. It began life as a simple tea chest turned on its side and a door, formed from the lid, held tightly in place with pegs and strong rubber bands cut from an old car inner-tube. I cut a hole about 4 ins. square in the door and covered it with a bit of clear acrylic sheet, so that I could see what was happening inside without having to dismantle it. The whole lot [except for the acrylic bit of course] was then covered in 2 inch thick polystyrene. P.V.A. glue sticks the polystyrene very well if string is tied around to hold it in place until it sets. I papered the inside with kitchen foil with the idea of reflecting the heat and light to give a more even distribution. Probably wishful thinking, but it looks nice. The heat source is an ordinary 60watt light bulb in a fitting attached to the back wall about 4 ins. above the floor. This is wired through an adjustable thermostat [removed from an old electric convector heater] mounted in a sealed plastic box with lots of holes drilled in it and fastened in one of the top rear corners. On the floor is a large tray about 1 inch deep, fitted with 1 inch thick foam rubber which is easy to keep continually damp without having standing water, and finally, a lattice work of string is stretched across about an inch from the top. I suspend the cocoons at varying heights from the strings using paperclips as hooks, so that when the moths emerge, they will cling to the bottoms of the cocoons and have plenty of room in which to expand their wings. With the thermostat set at around 28C., the reservoir filled and the door secured, there is no need to go inside for 10 days or so. Progress can be checked through the transparent panel, and although Murphys law ensures that the light is always off at this time, a kick usually does the trick. When a moth emerges I transfer it to a cage [which I prepared earlier] situated in a cool position. Its easy to unhook the paperclip and re-hang it in the cage without touching the moth. I was told by an Atlas expert many years ago that a female, once it has been handled, is of the opinion that it has paired, and subsequently begins laying. In fact a female will happily sit on its cocoon in the incubator for up to a week before moving, but it will call during the light-off periods and rapidly use up its pheromones. Keeping it in the cold slows down this process. A male should be moved immediately as it will fly within a few hours. Ive no idea how to consistently get Atlas to pair naturally. Ive had them pair in the greenhouse almost a couple of weeks after emerging and also in a tiny transporting cage which I put down while I went to get a coffee. Frankly, I cant be bothered to wait because they are usually so easy to hand pair. I prepare another small cage by suspending an empty cocoon with string from the roof netting, and placing it in a warm place. For those with 3 hands, it isnt a problem, but for the rest of us, not leaving the cage door open would be catastrophic. Someone once said that hand pairing Atlas is like holding a newspaper in each hand and trying to stick two of the corners together. I know what he means but with a bit of practice its quite easy. Many have tried to describe the process and failed so I wont! Its just a matter of "If at first you dont succeed .." A little tip, though, is to try and use a male about 4 days old. The abdomen is stiffer then, so it doesnt flop about so much. Once you have the connection , place the moths, one on each side of the cocoon, with the female higher, so that the males abdomen bends underneath the cocoon. Some of the females are huge and heavy and the sheer weight of the abdomen can pull it away from the male if it is not in a vertical position. If they dont separate within the next hour , they should remain coupled until dusk the following day. I usually hand pair around 4p.m. Keeping a gravid female in warmth and humidity will ensure lots of fertile ova, but cold and dry, she will only lay a few, possibly infertile, eggs. A shoebox, back in the emerging box', is an ideal environment. I usually leave the eggs in the hatching box because again, they need the warmth and humidity or they will surely desiccate.The young larvae readily take to many foodplants and present no problems provided they are given guess what ? warm and fairly humid conditions. They do quite well in sealed plastic boxes and are relatively slow growing.
Automeris hamata is one of the larger ' Bulls-eye' moths, reaching about 90 to 100 cm. wingspan. Like the majority of this genus, the larva is perhaps the most interesting stage, with the usual stinging spines but with the most unusual habit of spinning itself a little platform from whence it wanders to feed and to which it returns to rest. Rearing is straightforward in cages or even in plastic boxes provided the larvae are not too crowded. Although they would probably eat many different foodplants, the larvae took to Privet [ligustrum] with relish, and I was not about to argue with that. Fully grown, the larvae are surprisingly large, reaching a generous 'thumb' thickness. The adults emerge after about 4 weeks and pairing is easy, although to observe it, you have to be patient, diligent, lucky or an insomniac [maybe all four], because barely 20 minutes at around 3a.m. seems to be the standard procedure. The ovum is white with a green micropile, soon changing to black if it is fertile, and it hatches in about 3 weeks. As with all Automeris species, it desiccates easily, so humidity is important. The young larvae are seriously gregarious, gradually becoming solitary as they grow. Although the adult is attractive, it's the larvae which makes the species so different from it's friends and relations: a species well worth rearing.
One of the earliest species to show is Aglia tau TAU EMPEROR which, although not found in Britain, is fairly widespread in mainland Europe. The female is straw coloured and the male quite a bright orange. Although they fly and pair by day, the female, often having paired with several males, lays around the clock. [she also lays well in a shoebox or plastic box !!]. The ova are normally dark brown 'lozenges' and have the worrying habit of collapsing quite visibly just prior to hatching. The larvae are spectacular, having a tremendous set of 'horns' but, early on, they must not be crowded because they have the 'tying each other up fetish'. Later, they are easy to rear. The species is obligatorily univoltine but I always keep them in the 'fridge as they tend to pop out at odd times during the Winter at the slightest temperature rise. Amazingly, when brought into the warmth, they emerge within just a few days. The larvae will eat the leaves of most deciduous trees, and mine will be going on to Weeping Willow initially, and probably switching to Quercus [Oak] as that becomes available.
Opodipthera eucalypti [sometimes included in Antheraea] is not a spectacularly beautiful insect but is nevertheless an attractive species for the rearer. The male adult resembles Antheraea mylitta somewhat, but the larvae is definitely un-Antheraea like! The cocoon is a pretty amazing construction which appears to be made of carbon fibre. A sort of large black walnut which, if jumped up and down on , would probably damage your shoes. The moths come with their own toolkit [ Drill, Chainsaw etc. - how else could they possibly get out?] and you can hear them working a good twenty four hours before they emerge. They are a good size, usually around five and a half inches and the male has falcate, high aspect ratio wings, with circular eyespots which seem to stare at you rather disconcertingly. Pairing isn't usually a problem, the moths staying coupled for several hours. The unremarkable ova and young larvae lead to a very beautiful caterpillar in later instars, and the grass skirts worn on the legs indicates its origins [Australia and New Zealand]. It's not a difficult species and it's foodplant [surprise ! surprise !] is Eucalyptus, although Liquidamber is an alternative.
Daphnis nerii [Oleander Hawk] is not a difficult species, particularly when reared on Privet [ligustrum]. The problem is that newly hatched larvae from parents reared on Oleander usually refuse it. Convince them as follows : Take half a dozen leaves of Vinca [Periwinkle] or Nerium oleander and scissor them into narrow strips. Put them into half a coffee jar of water and shake. Let stand for an hour and then dip sprigs of Privet into the solution. When they have dried, feed them to the newly hatched larvae. Stand any remaining sprigs in the jar and use at the next feeding time, although the larvae will take unadulterated Privet once they have started feeding. If the parents were reared on Privet, this weaning process is usually unnecessary. The larvae can, of course, be reared on Vinca spp. and also on Lilac [Syringa] with a bit of persuasion.
Loepa katinka [GOLDEN EMPEROR] although a beautiful insect, could not be likened to the classical, sophisticated beauty of a 'Vogue' model. More a 'page 3' type! The flashy, bright yellow ground colour with precise and contrasty markings is reminiscent of heavily applied makeup, and the way that it flaunts itself when resting ensures it's photogenic qualities. This is an insect that needs humidity. The ova desiccate fairly easily and I learned to my cost the necessity for moisture at the pupation stage. A few year's ago I had a large number of larvae about to spin and I thought I would try the methods I use for most Sphingids [Each larva enclosed with a tissue in it's own, sealed, 'margerine tub' and a few days in an incubator at around 28C.] Within a couple of days they had spun the normal dark brown, pointed at each end, cocoon, but there was a vast quantity of liquid slopping around in the tub. I poured this out, left off the tops, and returned them to the incubator for a couple more days. Every one failed to pupate properly. Subsequently, I have left the liquid in and the tops on, with no problems. Apart from taking care with humidity, 'kats' are easy to rear. They normally pair fairly easily in a reasonably sized flightcage, and make life easy by remaining coupled for 24 hours. The moths will lay their eggs in a plastic or shoe box and hatch [only if you keep 'em moist!] in a couple of weeks or so. The larvae take Parthenocissus spp. [Virginia Creeper] {preferable} or Vitis [Grape Vine] with relish. The later instar caterpillars are unlike any other Saturniid larvae and have a minute head [small brain - told you it was a Bimbo].
*This is the correct name. I previously incorrectly referred to it as (= MEDIA) which is the hybrid of S.pyri (m) x S. Pavonia (f), which is a bit like calling your Mum Dum and your Dad Mad
Acherontia atropos (DEATH'S HEAD HAWK)
Emergence and pairing
Although time-consuming,
A.atropos is an easy species to rear. Temperature and humidity
I believe to be important, and I rigidly stick to 26-28 degrees
C and 90% respectively. Under these conditions, ova will hatch
in 4 days, pupae take about 3 weeks, larvae go down after 14 days
and pupate after another 4. As an incubator I use a metal cupboard,
with a large hole covered with clear perspex, at one end. Fitted
with a couple of thermostatically controlled soil heating cables
and covered outside with 50mm thick polystyrene, it stays on all
year round, set at 26 degrees C. The cupboard holds 2 cages, one
18" wide by 14" deep by 24" high (457 x 355 x 610mm)
for pairing/laying and the other 12" x 14" x 24"
(300 x 355 x 610mm) for emerging. About 15 adults can be accommodated
comfortably. I lay the pupae on layers of tissue in a shallow
tray and maintain humidity by copious spraying daily over all
of the inside of the cupboard, including the pupae. A thick layer
of newspaper in the large cage is soaked every 2 or 3 days. From
healthy pupae, moths always emerge properly, but the slightest
deformity can, but not always, result in deformed adults. Moths
emerge 3 hours before dusk with amazing 
punctuality. Death's-head Hawks cannot wait
to pair! They begin at dusk with such fervour that their squeaking
can be heard many yards away. In the up and down position, or
side by side on the netting, face to face, rolling about on the
floor of the
cage, like a great
"tennis-ball" of bodies jumbled in a corner, females
dragging males around. 10 minutes, 2 hours, overnight, - the combination
of time and position seems infinite. Occasionally, they pair in
the more usual 'hawk fashion' i.e: with the female hanging from
the roof netting and the male suspended beneath her.
If
I spot this, I remove them [they won't separate] as any free males
will cling to the pair, and as more join them, the whole assembly
crashes to the floor, tearing off the female's tarsal claws. She,
subsequently, will not lay.
can
you work these out?
Feeding & Laying.
On the third day after emergence,
I begin feeding the adults with a 50% honey/water mixture. Any
time of the day will do, but not near dusk or they will fly. At
the first feed, they struggle violently and rarely take any honey,
but after 2 or 3 feeds they become easy to handle.
By
holding the moth at the wing roots with the thumb and second finger,
the first finger is left free to hold down the head, which makes
locating and extracting the proboscis much easier. For this I
use a small, pointed plastic stick (not a pin). The tongue is
then dipped in the honey solution, and held until the moth starts
to feed, signified by the movement of the proboscis tip and waving
of the antennae. The moth can then be slowly released, when it
will continue to feed for up to 5 minutes. I've made half a dozen
feeding trays by sticking shallow tops from plastic boxes (about
75mm x 50mm x 6mm) on to 150mm squares of thin plywood. This avoids
them being tipped over by the moths, and by working a rota-system,
quite a large number of moths can be fed in a relatively short
time. I feed every two days and later, when they are laying, every
three days. If moths are pairing [especially in the 'end to end'
mode] at feeding time, they can still be fed without them separating,
but feed the male first as the stronger female will drag he male
away when she has finished. After about 10 days, I remove the
males to a cage in a cool position and continue to feed them.
Being less active, they will remain alive much longer in this
situation. Buddleia [Buddleia daviddii or B.globosa etc.] stems
in a jar of water are now introduced into the females' cage, the
bottom of which is covered with a thick layer of water-saturated
newspaper. Cut off any flower heads or atropos will surely hide
ova therein. Within a couple of days they will begin to lay; a
few at first, gradually increasing nightly, although they will
lay few, if any, on feeding days. The eggs are laid on the leaves,
the netting and sometimes on the cage framework (where they are
difficult to remove without damage). Reintroduction of the males
after about 8 days, while having doubtful benefits, causes immediate
pairings, and is certainly useful in slowing down ova output,
if and when required.
Larvae and Pupation.
Ova are collected daily, put into small boxes, without tissue, and dated. As the adult lays ova singly, I never have more than 30 in one box [although recently, 90 ova packed tightly into a small container and lost in the post, all hatched]. This is probably the least problematic stage, and although by habit I breathe on the lids whenever I remove them from the ova boxes, this is not necessary. As the eggs hatch, I transfer them to small, tissue-lined containers [coleslaw or yoghurt type] with a couple of sprigs of Privet [Ligustrum vulgare]. These I take from the top of a stem, but cut off the bud and the first couple of leaves. The young larvae seem to prefer young, but not too young, leaves. After the first moult they go into 2-litre 'ice-cream' boxes [24] and thereafter are halved with each subsequent moult, finishing with 3 to a box for the final instar. For larvae, I use another incubator, a 4' x 3' x 3' box (1.2 x 0.9 x 0.9m), heated by a thermostatically controlled 60Watt 'loft-heater'. There is no provision for humidity, as the boxes create their own, and although there is a timer-controlled 15W light source, I rear atropos in darkness. Other than the odd occasion, when a young larvae fails to begin feeding, I seldom have any losses using this method. When the fully grown larvae change colour and begin to charge around the box, I put each one, with a tissue, into a margarine tub [500g]. Rubber bands are needed, as the very strong larvae will push the lids off with ease. The larvae roll the tissue into a sodden ball in the corner, but I do not change it, and have never had larvae fail to pupate properly under these conditions. Ova and larvae travel well in the post, but not so non- diapaused pupae . I've bounced them around all over the country in the boot of the car, with no ill effects, but put them in the post and about 50% are lost. I've packed them in all different ways and sent them to myself at all times of the year, but always with similar results. So if anyone knows the secret .?
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