Tiger Hisser (Gromphadorhina grandidieri) “Black”

Tiger Hisser Gromphadorhina grandidieri

Description

Tiger hisser ‘black’ is a pure black strain. They are robust and can get 1.5-2 inches in length

Origin

This species like all hissers originate from the islands of Madagascar. Per the name my assumption is that this is a selection off of the tiger hissers. My personal opinion is that they breed and obtain sizes more like that of the common hisser. They may have originated as a mutation from them.

Reproduction

Females release pheromones when receptive and mate with select males. Males establish the right to mate by pushing each around using bumpy protrusions on the top of the pronotum. Females produce a long yellow egg case (ootheca) that they retain inside their abdomen for about 60 days. Egg cases contain 30-100 plus eggs. The eggs hatch inside the female and the nymphs are then expelled out. Newly emerged nymphs are pure white until there exoskeleton hardens and darkens. Nymphs crowd around a thick secretion that provides initial sustenance. Sometimes if conditions are not optimal, crowded, or nutrition lacking females may “abort” or expel the partially developed ootheca. Reproduction is inhibited if temperatures are not maintained above 80 degrees.

Development

Nymphs go through a period of 6-7 molts over a period of 6-10 months. Development is largely influenced on temperature as well as nutritional quality. Nymphs often eat some or all of their old shed. If the humidity is not maintained molting problems can occur.

Nutrition

Hissing roaches will eat a wide range of produce, however it should be organic and you should avoid foods that naturally contain phytates and oxalates. I find that feeding hissing roaches organic bananas, oranges, and zucchini works well. I prefer to soak a high protein dog puppy food as the roaches can consume it much easier.

Housing

If you have a small colony they should be housed in a small container. They seem to breed best when kept slightly crowded. This also keeps them in close proximity with their food and water. The media that you place them on should be a mixture of peat and well-rotted compost. The mix should be just barely moist and not soggy. Many people use egg cartons, however I have found that using natural pieces of tree bark stacked toward the back to provide lots of shelter promotes breeding and proper humidity naturally. I like to keep the back half of the tank on the heat mat. I will mist the tank or dump water into the back half were it will naturally evaporate and provide humidity.

Rearing notes

Tiger hisser ‘black’ reproduce very strongly. If fact they produce so many offspring that they will quickly fill a ten gallon tank within a years time.

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