NOTE: The difficulty meter is EXTREMELY SUBJECTIVE, and based on the experience of one person only (me, Bart Coppens). There is no such thing as objective difficulty; and how hard it is to breed a certain species also depends on how familiar you are with the species in question, your breeding experience, and your geographical location!

If you are in a hot and dry place, say  a desert like Arizona or New Mexico – then it will be very easy to breed species from there, since you live in the perfect climate and can provide them with the conditions they require. But it will be harder for you to breed species that are from humid areas like the neotropics, since the dry air can easily dessicate your livestock if exposed to it without climate control! If you are from Japan, breeding Japanese butterflies and moths will be much easier than for everybody else – people in America and Europe will struggle to find host plants and give them substitutes that may not be ideal for them. The author of this website lives in the Netherlands. The measurement scale is here to encourage you or discourage you from breeding certain species if you are not sure – but  it cannot be used as objective measurement.


1/10 – This rating means that breeding this species could not have been easier in any other way – even people with no experience with keeping Lepidoptera at all can do it with great succes and little effort, and that it would be harder to fail than to succeed at breeding this species.  

2/10 – This rating means that this species is one of the easiest to breed species available in the hobby, and that succes almost always can be guaranteed if one follows the basic instructions and requirements needed for breeding it, even if you have no experience with Lepidoptera at all in your life.  

3/10 – This means that this species is extremely easy to breed  – even for beginners with minimal experience. If you follow the instructions of  caresheets, succes is nearly guaranteed and it is easy to provide for the basic needs of this species.

4/10 – This rating means that this species is easy to breed – but you will need a little experience and basic knowledge of moths to be succesful, but not much else. It is easy to be succesful if you put in the effort of meeting the basic requirements for this species.

5/10 – This rating means that this species is not hard to breed, but you will need some experience with Lepidoptera or just common sense when it comes to insects to be succesful. While it is not hard to be succesful, you will still need to put in a little effort to be able to  make it, although it is not hard to provide the basic needs of this species.

6/10 – This rating means that this species is more difficult than average to breed, and you will need to understand the biology of this species and immerse yourself in their life cycle in order to be succesful. You will need all the basic knowledge and experience.  While it is not hard to be succesful, you will need to do a little research in order archieve succes.

7/10 – This rating means that this species is challening to breed, and that you will need some advanced experience in order to be succesful.  This species can be picky or sensitive, and livestock may quickly die or struggle if the conditions are not met. It also means that succes is never guaranteed with this species, even for experienced breeders, since they can be prone to death.

8/10 – This means that this species is hard to breed, and that you will probably need to have a lot of experience in order to be succesful. This species will be hard to keep alive, even for the most experienced breeders and that it is hard to be succesful with them.

9/10 – This means that this species is extremely hard to breed, and that you will need extensive experience just to keep them alive. Even the most experienced and knowledgeable people will struggle to breed this species, although it is possible to do so if you have studied them well.

10/10 – This rating means that it is possible to breed the species in theory, although it is nearly impossible in practice, and (almost) nobody has done so before with succes. This could be because it is a species with extraordinary needs that can hardly be met in captivity, or because they are very sensitive to certain conditions  and very hard to keep alive. Even experts fail at breeding it. In order to breed it, you will have to push past the limits all currently available knowledge, and come up with a solution nobody has thought of or tried before.

???/10 – This rating means that I have no clue what to rate them, because either I have A) not completed the lifecycle myself, so I have not experienced the “complete” picture and cannot rate it, or because B) This species has such a weird and unique biology that is different from all other Lepidoptera, that it is impossible to compare it with all other species I have bred.


Rothschildia cincta

Rothschildia cincta is a predominantly Mexican species of Rothschildia moth. However, a part of its range extends across the border of Mexico into a small part of North America (Arizona), making it one the few Rothschildia recorded in the United States.


  • Difficulty rating: 4/10 (Easy to breed)
  • Host plants: Ligustrum, Salix, Syringa, Prunus, Quercus, Mimosa, Schinus, Sapium and many more
  • Natural range:  Brazil, Argentina, Bolivia, Uruguay, and other places in South America. 
  • Polyphagous: yes  
  • Generations: Bivoltine (Has two to three generations per year in the wild, overwinters as coocoon)
  • Family: Saturniidae (silkmoths)
  • Pupation: Cocoon (silk encasing)
  • Prefered climate: Dry, hot and arid environments with mild to cold winters (Mexico, Arizona)
  • Special notes: The caterpillars can have a very rare yellow colour form. 

Citheronia laocoon

Citheronia laocoon is a beautiful Citheronia species from South America. Remarkable are its colours, but also the sexual dimorphism – while males of Saturniidae are generally smaller than the females, Citheronia laocoon takes it to the next level with males that are half the size of females. They seem to be very easy to breed.

25468774193_2b0b2d46d1_o (2)Adult female of Citheronia laocoon

Citheronia laocoon occurs in South America, mainly in Brazil, French Guiana, Bolivia, Argentina, Paraguay. They seem to be very polyphagous – in the wild they are commonly found feeding on Ricinus communis (castor bean). They will take a wide variety of plants and feed on Rosaceae too; I myself have raised them on Prunus padus and Liquidambar. Ligustrum has also been reported.

A fully grown caterpillar of Citheronia laocoon on Prunus padus

The most important thing is to keep this species well ventilated. While they tolerate high humidity extremely well, Citheronia dislikes stale air and lack of ventilation. It is best to cage or sleeve them. The small caterpillars should be reared in closed boxes until the third instar – the last two instars should be sleeved or caged. Compared to other Citheronia species, the moths and caterpillars are on the smaller side.

26121656896_aa3cd8d4e8_o Two females and one small female of Citheronia laocoon

Citheronia laocoon seems to pair very easily at different times of the day – I’ve seen them couple up at dusk, in the middle of the night and even the early morning.

25542681824_5e2e52f971_o.jpgCopula of Citheronia laocoon




The awesome and impressive female of Pallastica mesoleuca – a giant among Lasiocampidae.

The credit for this rearing goes to my friend Marcel van Bijnen, who kindly provided me these images. When he was traveling through Uganda, he encountered an impressive caterpillar, one that turned out to be of the Lasiocampidae moth Pallastica mesoleuca.

The caterpillar of Pallastica mesoleuca, an impressive beast covered with spines.

Not much at all is known about the biology of this moth. My friend Marcel from the Netherlands has encountered and reared this moth in the wild. This small article illustrates the larva, cocoon and adult female that hatched from it.

 The pupa and cocoon of Pallastica mesaleuca, including a leaf  of the natural host plant that remains unidentified.

The live female of Pallastica mesoleuca

The larva spinning a thick cocoon inside the container

The adult moth of Pallastica mesoleuca prepared for collection 


Paradirphia semirosea

Paradirphia semirosea is a very small, cute, and nice Saturniidae moth from Central America. When disturbed they will assume a threat pose and reveal their bright red abdomen with black stripes; a colour warning that may scare off some predators. From the soft pink colours to the creamy golden/white stripes on the wings, red legs and beautiful fluff on their back t is a shame they are rarely offered as livestock.

The threat pose of Paradirphia reveals a beautifully decorated abdomen

The good news is that Paradirphia semirosea is easily reared in captivity. The larvae are gregarious like many species of Hemileucinae, although in the final instar they become solitary and will need a little bit more space for themselves, although they still tolerate living in a high density of larvae. They do grow a  little slowly, but that shouldn’t be a problem. Important is not to keep them wet. I reared them in plastic boxes though they should do even better in cages.

Adult Paradirphia semirosea in resting position. Pretty in pink!

When fully grown, the larvae of Paradirphia semirosea will burrow and form a naked pupa in the soil, without spinning a cocoon. The tiny pupae seem very hardy and will survive for a long time in room conditions and may even take a long time to emerge too. Simulating a rainy season (keep them dry for a long time and then suddenly spray with warm water) may trigger them to emerge faster and more synchronised.

Larvae of Paradirphia in several instars feasting on oak

Like most Hemileucinae the larvae have urticating spines. The sting is not that bad though and is comparable to that of a common stinging nettle. It will make you uncomfortable for a few minutes, but it is tolerable, and not very painful. That being said the sting is worse than the average Automeris however.

Like many tiny species of Saturniidae  the moths are short lived. Pairings should be easy to archieve in an airy cage. The most tricky thing is getting a pair out since the emergence time can be a little sporadic and they are short lived.

Paradirphia semirosea larvae: a  handfull of stingers!

“Assassin caterpillar” or, in Spanish, “taturana”—these are the names appointed to caterpillars of the genus Lonomia. It’s a name rightfully deserved: Species of the South American genus Lonomia are of medical significance due to their larval forms that may cause severe envenomation and even death to humans. Lonomia is often considered to be the most venomous genus of Lepidoptera, in particular L. obliqua, of which the hemotoxin is known to inflict severe envenomation and cause disseminated intravascular coagulation and haemorrhagic disease in victims.

Lonomia electra: amazing polymorphism showing a diversity in leaf camouflage

Lonomia electra is the first species I have reared from this genus, and I fell in love with them. After studying their life cycle for 1.5 years and publishing this data, I now have extensive knowledge of this species. For those interested, here is some background reading and my publication: Up close and personal with venomous moths (AES) or for the .pdf file of the scientific publication: Click here for science!

These Lonomia from Costa Rica seemed to do quite well on Ligustrum ovalifolium in captivity. A lot of patience is needed to rear them as they larvae have an extremely slow development rate for a Saturniidae (I recorded over 100 days). Eggs seem to take a month to hatch aswell.

A larval congegration of Lonomia electra on my hand

Lonomia seems gregarious up until the final instar – this means they exihibit social behaviour for the entirety of them being caterpillars. They seem to tolerate being reared in plastic boxes with no ventilation at all quite well and withstand the highest degree of humidity. The rearing takes quite a lot of patience, however it seems that the pupae hatch quite fast (in a month). Pupae should be sprayed frequently as this species seems to prefer a higher degree of humidity and pupae dessicate rather fast. The larvae do not spin a cocoon before pupating; in fact they will lazily lie down on the floor and pupate on the spot. They do not even seem to attempt to burrow that much – I theorise that in their natural habitat the larvae pupate between the leaf litter covering the forest floor, giving them the opportunity to just lie down somewhere on the ground and pupate.

The adults seem to exihibit nice polymorhism. The females are always grey (though significantly larger than the males) while the males have two different colour forms: one orange/brownish rusty colour, and one lighter yellow form.

In the picture: one larger, greyish female (botton left) and three males (top) – showing both colour forms the males can have, the orange and yellow form.


Picture: pupae of Lonomia electra


Actias maenas — “Malaysian moon moth”

Actias maenas, the Malaysian moon moth, is a species with a broad range from the mainland of most parts of the Indomalayan ecozone. They are highly sexually dimorphic, and one of the larger moon moths of the genus Actias.

dsc02707Actias maenas female

Actias maenas is quite easy to rear in captivity, and accepts host plants within Rosaceae such as Prunus, Malus and more, and also Liquidambar, which is to be recommended for this species.  Their larvae will grow quite large, but do grow slowly compared to other Actias species. I myself prefer to rear them on plant cuttings in a water bottle. The only thing that seems to be more difficult with this species is archieving pairings, it’s best to have a lot of flight space and a bit of ventilation for them. This fragile species will tatter quite fast. Males often break off their hindwing tails within a few days.

dsc02657Actias maenas male

28208256964_5797a0c810_oFully grown larvae of Actias maenas  on Liquidambar

28208329994_5801cbd0f7_oA tree full of Actias maenas larvae

The aim of this website is to provide information about many species of moths and butterflies around the world, with a slight focus on rearing them in captivity.