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Mantid Kingdom

Praying mantids and feeder insects!

Hierodula Membranacea

(Giant Asian Mantis)


Appearance:

This exceptionally large mantis is named for its size and heavy build. When threatened, they can inflict a sharp snap that can draw blood. Their coloration ranges from green to cream color. Although somewhat aggressive, they can be tamed and make an excellent beginner’s mantis.

Sexing:

Females grow up to 9 cm long while males stop at 8 cm. Their lack of cryptic body parts makes sexing this species very easily at a young age. After the 2nd molt, 8 segments can be counted on the male’s abdomen while 6 on the females. An adult female’s abdomen will be much larger than the males’ and the males will appear to have longer wings due to his smaller body.

Accommodation:

This species of mantis fare well at room temperature. It’s best to keep it around 25-30 C (77-86 F). A heat mat or heat lamp may be used to maintain the desired temperature. Keep the temperature cooler at night to lengthen the lifespan of the mantis. Warmer temperature speeds up the metabolism of the mantis and will shorten its life span and in contrast, cooler temperature slows its metabolism and lengthens the life span, but both extremes could kill it. Keep humidity at around 60%…too much humidity might induce fungal growth, and too little could cause a bad shed.

Caging:

Their cage should be well ventilated with thick twigs for the mantis to perch on. This species is an active predator and need plenty of space to roam around. Plus given their large size, they will need a large tank so they will not be inhibited. The suggested size is an enclosure with length, width, and hight at least 3x the mantids length. For example, a 1 inch mantid should not be kept in any cups or other enclosures smaller than 3x3x3 inches. This species is very aggressive to each other and very cannibalistic so they should not be kept together unless during courtship.

Feeding:

This species is very voracious. They will gladly take crickets, roaches, and moths as babies and will even tackle locusts and mouse pinkies as adults. It’s recommended that the size of the feeder insect does not exceed 1/3 the mantis’ length, but this mantis will tackle prey as big as itself. Even though they are voracious and will attack anything, do not offer them poisonous insects or wasps or bees as these could seriously harm the mantis. To feed them, just drop the insect in the enclosure and mantis will make short work of it. For non-moving prey like mealworms, these can be pierced to excrete juices and offered by tweezers to the mantis just put it to their mouth and they will grab onto the prey if they like it. Do not overfeed them, overfeeding can not only shorten their lifespan, but it could also kill them (although rare). Watch their abdomen, if it is very inflated, stop feeding them for a couple of days or until the abdomen is much smaller. As for watering, this type will get its fluid from its food, but an occasional spraying could be useful.

Molting:

A mantis will stop eating a day or 2 (sometimes a bit longer) prior to its molt. They molt about every 2 weeks as babies and the time in between each molt increases as they get older so their last molt into adulthood can sometimes take as long as 3-4 weeks. It takes about 7 molts for males and about 7¬†for females. To pair up a male and female, speed up the growth rate of the females while slowing down the males’ with cooler temperature and less feedings once the female has molted into an adult, speed up the male’s growth to molt him out. During molting, it is vital that you do not disturb them and also make sure that the humidity is at a safe level too much humidity can hinder the insect from drying out correctly and it might end up with bent legs and crippled arms. The mantis will hang upside down from a branch or the screen lid and will sometimes shake or spasm violently. Then after a while, it worms out of its old skin and will hang out to dry. Make sure that it has plenty of space to hang, otherwise it might hit the ground and be crippled. Once it has molted, wait a day or 2 to feed the mantid.

Reproduction:

A minimum of two weeks after their final moult, introduce the female into the male’s enclosure near him. It may be best to mate the mantids after 3-4 weeks instead. Two weeks may be too soon and the female may not be mature enough and might eat the male instead. The female is very aggressive towards the male so make sure that she is very well fed prior to this. If he is ready, her presence would attract his attention and he’ll try to make his move. It could take hours before he does anything though. The best way to initiate breeding for this species is to offer the female a prey item and while she is busy, introduce the male behind her and if he is ready, he will jump on her back. As she is busy with eating, she can’t grab him or throw him off of her. A mature female will remain calm and allow him to attempt to mate with her. After a while of holding on, the male will feel confident and will bend his abdomen down to connect with hers and mating will commence. The time before the actual mating can vary. Afterwards, he will run away and he must be removed or else he’ll be eaten. The older the female, the more receptive she will likely be to mating. Older males also generally initiate mating much quicker than younger males.

Ootheca:

After 3-4 weeks or so as an adult, the female may start to laying oothecae (mated or not). This species can lay around 4-6 oothecae. After 4-6 weeks of incubation at 30 C (86 F) and 70-80% humidity with an occasional misting, 100-150 nymphs will hatch out. These can be fed fruit flies or pinhead crickets a day or two after hatching. Then continue to care for them as this care sheet suggests.

Additional Notes:

Hierodula sp. are very easy to rear. The nymphs feed readily on fruit flies and will bravely take on crickets their own size. Overfeeding could be a problem so take heed and never let them indulge themselves on unlimited prey.