Xoticbugs Care Guide

Phyllium philippinicum

When I think of a leaf insect, this species is the first that comes to mind. Phyllium philippinicum is by far the most common and popular leaf insect kept in culture, and for good reason. It was also the very first species I kept, and from it my fascination and love for leaf insects grew.

Native to the tropical rainforests of the Philippines, this species has long been a favourite among keepers. What makes Phyllium philippinicum especially appealing is how beginner friendly it is. I’m often asked, “What’s the best species for my first leaf insect?” and my answer is always this one. They tolerate a wide range of environmental conditions, making them forgiving and relatively easy to care for and witness a full life cycle of. They are also calm enough to handle, which makes them a good choice as a pet.

Their popularity is well deserved, as they remain a truly stunning species and one of the best examples of camouflage evolution in the animal kingdom.

Read time

10 minute read

What you'll learn

How to care for phyllium philippinicum leaf insects

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Appearance

As with all leaf insect species, the appearance of Phyllium philippinicum is pretty consistent for both males and females until they reach around the L3/L4 stage. At this point it is very easy to sex nymphs into males and females as they show significant sexual dimorphism.

Nymphs: Newly hatched Phyllium philippinicum nymphs are an earthy black, measuring around 15-20mm in length. This is a middling size compared to other leaf insect species, not tiny but not especially large either. In the wild eggs are dropped to the forest floor by adult females where they can be mistaken for seeds and carried into ant nests. It is thought that this early resemblance to ants is therefore no coincidence as it allows them to escape undetected.

While their overall body is dark, they show distinctive white highlights, a stark contrast to the black. This is most prominent as transverse bands across the femora and tibiae of the legs, and as lighter edging along the abdomen. The abdomen itself is already broad, leaf-like and noticeably wider than the thorax. That said, the abdomen and nymphs themselves are thinner than those of Cryptophyllium or Pulchriphyllium species nymphs. The legs display small lobes, and they have short antennae protruding forward, which look like a small, stumpy horn. Both of these features develop considerably with maturity and differently depending on the sex of the individual.

As the nymphs find their way into the forest canopy and begin feeding they gradually transition from their ant-like, dark appearance into their characteristic green.

Females: From the L3 stage, and certainly by L4, female Phyllium philippinicum are quite easy to identify. Their abdomen is noticeably broader than that of males, and their antennae are shorter and stumpier. As adults, females develop into large, heavy-bodied insects, especially when carrying eggs. They reach lengths of ~80-90mm. Their bodies are broad and rounded, extending outward well past the last set of legs before tapering back towards the tip of the abdomen. The overall colour is a light to lime green, though individuals may display subtle yellowish or brown edging along the abdominal lobes and wing margins. Occasionally, yellow females appear, but this species is not known for much colour variation. With age, females often show increasing amounts of brown mottling.

The wings are large, lying flat across the back and covering most of the body – often around 80%. Despite their impressive appearance, these wings are non-functional, as females are incapable of flight. The surface of the wings displays a striking network of vein-like patterns. The legs are adorned with large, leafy lobes, especially on the forelegs. The head is relatively small compared to the bulk of the body, with short cylindrical antennae that are far smaller than the long antennae of males. Just behind the head, the narrow prothorax forms a distinct neck-like section before broadening into the thorax and abdomen.

Males: By the L3 or L4 stage, male Phyllium philippinicum are also straightforward to identify, with their slimmer abdomens and noticeably longer antennae. As adults they reach lengths of ~55-60mm and are slender and lightweight. Their abdomen is narrow and elongated, tapering smoothly to the tip, giving them a streamlined profile. The forewings are reduced, covering only part of the thorax, while the hindwings are long covering the entire body, transparent, and fully functional, enabling strong flight.

The legs of males are long and thin, with only small lobes on the femora and tibiae, far less developed than in females. Their colouration is usually a uniform lime or bright green, sometimes with yellowish highlights along the wings or legs, but without the mottling often seen in females. The head is proportionally larger than that of females and bears long, feather-like antennae.

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Lifespan

Females live for ~10-12 months.

Males live for ~6-9 months.

When rearing nymphs of the same age, the males will mature into adults earlier than the females. It is sometimes recommend slowing the males’ development by keeping them at slightly cooler temperatures to better synchronise maturity, but with Phyllium philippinicum this is rarely necessary. The males generally live long enough to overlap with the females’ maturity, allowing breeding to occur without issue.

Compared to other leaf insect species, this is a relatively fast-growing species.

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Behaviour

Like their appearance, the behaviour of Phyllium philippinicum varies with both developmental stage and sex. Newly hatched nymphs are full of energy – in the wild they would be racing to escape the dangers of the forest floor and make their way up into the canopy, and in captivity they show the same restless drive. They are extremely active, running constantly and even performing a rolling motion when picked up in an attempt to wriggle free. Because they are so delicate at this stage, it is often safer to move them gently with a soft paintbrush rather than risk them losing a leg through rough handling. Extra care is also needed when opening the enclosure, as these tiny nymphs are quick to make a dash for the exit. Fortunately, this hyperactivity gradually settles within the first week as they begin to feed and establish themselves.

Adults, by contrast, are calm and docile. Both males and females spend most of the day motionless on their food plants, blending seamlessly with the leaves around them. They become active at night, feeding and moving under the cover of darkness. If you listen closely at dusk, you can even hear the faint rustling of them feeding.

When it comes to handling, this species is excellent for beginners. Females in particular are very tolerant, often content to sit quietly on your hand and explore at their own pace. Males can also be handled, though they are more likely to take flight if startled, using their fully functional wings.

Phyllium philippinicum are not aggressive towards one another, and multiple males can be kept together without risk of fighting. The only minor damage that may occur is accidental as sometimes one insect mistakes another for a leaf and gives a small nibble at the abdomen or wings, a testament to just how convincing their camouflage is.

Overall, Phyllium philippinicum are strong feeders, reliable breeders, and display a range of behaviours that make them both fascinating and easy to keep in captivity.

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Diet

I feed my Phyllium philippinicum primarily on bramble throughout the year, with raspberry and oak added during the summer months when they are available.

When selecting food plants, ensure they are free from insecticides or other harmful chemicals. Nymphs of this species show a preference for older, darker leaves rather than fresh new growth, particularly with bramble. Very young leaves can actually be harmful, so avoid offering the soft, fluffy new shoots and instead stick to tougher, mature leaves.

Before offering food to your Phyllium Philippinicum it's advisable to wash the cuttings with dechlorinated water to remove any unwanted hitchhikers and to check for contaminants like bird droppings.

Unlike some other leaf insect species, Phyllium philippinicum young nymphs have a strong feeding instinct. Some keepers encourage feeding by trimming the edges of leaves with scissors, though in my experience this has never been necessary. A gentle breeze or the use of a low-speed fan can also stimulate feeding at any life stage by mimicking natural airflow and encouraging activity.

To keep food plants fresh for longer and reduce maintenance, I recommend standing the cuttings in a pot of water inside the enclosure. Always cover or narrow the opening of the container to prevent the leaf insects from falling in and drowning. A fresh source of food plant should be provided at all times. On average, clean out the enclosure once a week, replacing old food with fresh cuttings and adding new substrate (I recommend paper towel) to remove frass. This weekly maintenance also provides a good opportunity to collect any eggs that may have been laid.

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Environmental conditions

One of the reasons Phyllium philippinicum makes such a good beginner species is their tolerance of a wide range of environmental conditions. They are not overly sensitive to fluctuations and won’t suddenly die if the temperature shifts, making them far more forgiving than some other phasmids.

Temperature: Maintain temperatures anywhere between 18°C and 28°C during day and night. A slight cooling after dark is beneficial, as it mimics the natural drop they would experience in the wild. For most homes, normal room temperature is perfectly suitable.

Humidity: As with most phasmids originating from Asia humidity plays a huge role in the development of leaf insects. Aim for levels of at least 60%, with 70–80% being ideal. To achieve this, spray the enclosure once or twice daily, focusing on the food plant. Proper moisture is essential for successful moulting, a process by which the leaf insect grows and develops. It also seems to benefit adult males and younger nymphs, which will often drink directly from water droplets on the leaves. Therefore, when misting, use dechlorinated water to avoid potential harm. Keep in mind it is easier to maintain a higher humidity in a glass enclosure (such as an Exo Terra) rather than a netted enclosure.

Lighting: Mimic natural day/night cycles using either natural or artificial lighting.

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Housing

You may have heard the general rule that a leaf insect’s enclosure should be at least three times the insect’s body length in height and twice in width.

This holds true for Phyllium philippinicum, though as with most species, more space is always better.
For young nymphs, there are two good approaches. You can use a large enclosure where the food plant does not touch the walls, preventing nymphs from wandering off, or a smaller setup where they can easily find their way back to the food plant. The key is ensuring they can locate food reliably. This is especially important for species with weaker feeding instincts, but Phyllium philippinicum nymphs are usually good feeders and will readily find leaves as long as some touch the enclosure sides. Small glass tanks, plastic tubs, or netted cubes all work well at this stage.

For adults, a minimum enclosure size of 30 × 30 × 45 cm (width × length × height) is recommended and will comfortably house two to three adult pairs. Personally, I prefer using netted enclosures of 40 × 40 × 60 cm, as the extra space it provides is considerable.

For adults a minimum size of 30cm x 30cm x 45cm (width x length x height) is recommended for this species which can fit two to three adult pairs comfortably. I like to keep mine in 40cm x 40cm x 60cm netted enclosures for even more space. The more height available, the better, as this allows the leaf insect more room when hanging down during moulting. More vertical space is always beneficial, since leaf insects hang downwards during moults and need clearance to shed successfully.

Proper ventilation is equally important as maintaining high humidity. Ensure ample airflow to prevent stagnant conditions. At a minimum, a mesh or netted roof is recommended. Netted material also provides easier grip for the insects, which is especially beneficial during moulting.

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Breeding, incubation, and hatching

Both males and females are common in Phyllium philippinicum, allowing for sexual reproduction. Within 2–3 weeks of their final moult, adults begin to mate readily. Males can often be seen riding on the backs of females – a reassuring sign that pairing has occurred. Females will then start laying fertilised eggs shortly afterwards.

Females typically lay ~3 eggs per day over a period of about three months, dropping them to the floor of the enclosure with a whip-like movement of their abdomen. The eggs of Phyllium philippinicum are mid-brown to dark brown in colour and have an irregular, wrinkled, seed-like appearance. Their surface is deeply ridged and grooved, giving them a textured, fibrous look rather than being smooth or lumpy. The overall shape is oval to kidney-like, with no obvious symmetry. A key feature of this species’ eggs is the presence of fine, hair-like frills along the surface. Under normal conditions these frills are often subtle, but with increased humidity they absorb moisture and swell outward, becoming more prominent and noticeable. This appearance makes them easy to identify compared to frass. The eggs measure ~4.4mm in length and ~2mm in width.

Incubation usually takes 4–5 months, though in cooler or drier conditions this may extend to 6–8 months. This is still relatively short compared to many other leaf insect species.

Maintain the eggs on a moist substrate such as paper towel, coconut fibre, or preferably vermiculite, at a stable temperature of 20°C–26°C. Avoid large fluctuations in temperature, as stability is important for development. Ensure the eggs receive daily light exposure and monitor regularly for mould. If mould appears on an egg, carefully remove it from the container. You can attempt to gently wipe off the mould using a clean paper towel or soft brush, but if the mould is extensive, it's best to discard the egg to protect the others.

I personally incubate my Phyllium philippinicum eggs using the vermiculite bottle cap method. For detailed steps on this technique and more information on phasmid egg care, please refer to my article. To maintain high humidity levels of around 80%, I spritz the vermiculite base with dechlorinated water 2–3 times per week.

In the absence of males, female Phyllium philippinicum can reproduce via parthenogenesis. This process produces unfertilised eggs that hatch into genetic clones of the female. I also have an article on this process!