Are people swapping their cats and goldfish for praying mantises?

The first overview of the pet mantis market’s dynamics reports a lack of regulations, but also the potential of a stronger collaboration between hobbyists and scientists for biodiversity conservation.

New research sheds light on the pet insect market and its implications on biodiversity conservation

Rearing insects at home as pets may sound strange, but thousands of people all over the world have already swapped their hamsters for praying mantises or stick insects.

These insects, sold at fairs and pet markets, or collected in the wild and then reared by amateurs or professionals, are gaining increased popularity and fueling a largely unknown market. Not all of them are small, crawling monsters. Some are elegant, with flower-like coloration (the Orchid Mantis, Hymenopus coronatus), and some are funny-looking like Pokémon (e.g. the Jeweled Flower Mantis, Creobroter wahlbergii). Many can be safely manipulated and cuddled as they look at you with big, cute kitty-eyes (the Giant Shield Mantis Rhombodera basalis).

 The beautiful orchid mantis Hymenopus coronatus, one of the most priced and requested mantis species on the market. Photo by William Di Pietro

When choosing a pet insect, “customers” consider things such as shape, size, colors, and behaviors. They might also take into account how rare a certain species is, or how easy it is to look after. Looking at these preferences, Roberto Battiston of Museo di Archeologia e Scienze Naturali G. Zannato (Italy), William di Pietro of the World Biodiversity Association (Italy) and entomologist Kris Anderson (USA) published the first overview of the mantis pet market. Understanding how this market, which still mostly unregulated, is changing, may be crucial to the conservation of rare species and promoting awareness of their habitat and place in the ecosystem.

A survey among almost 200 hobbyists, enthusiasts and professional sellers in the mantis community from 28 different countries showed that the targets of this market are indeed predictable. The typical mantis breeder or enthusiast, the study found, is 19 to 30 years old and buys mantises mostly out of personal curiosity or scientific interest. Willing to spend over $30 for a single individual, most people prefer beautiful looking species over rare ones.

A cute nymph of the Jeweled Flower Mantis Creobroter wahlbergii resting on the tip of a finger. Photo by William Di Pietro

The research, published in the open-access Journal of Orthoptera Research, identified buyers as “mostly curious enthusiasts with poor knowledge of the market dynamics and the laws behind it, even if they seem to generally care about their pet.”

But the data also suggests the trade might not always be on the legal side, as “about one time out of four the lack of permits or transparency from the seller is perceived from the buyer.”

A good collaboration between science and this large community may play a crucial role in the conservation of mantises in nature, the researchers point out.

The Giant Shield Mantis Rhombodera basalis looking for a friend. Photo by William Di Pietro

Mantises and, in general, insects, are poorly known in terms of biology, distribution, and threats, with many species still unknown and waiting to be discovered. This is a major limit to their protection and conservation, since you cannot protect what you don’t know.

“Hobbyists and pet insect enthusiasts are producing and sharing a huge quantity of observations on the biology and ecology of hundreds of species, even rare or still undescribed ones, a priceless heritage for the scientific community,” the researchers conclude. 

“Strengthening the dialogue between them, promoting a white market over a black one, may be a crucial help for the conservation of these insects, fundamental parts of the biodiversity of our planet, that are replacing our traditional pets at home.”

Research article:

Battiston R, Di Pietro W, Anderson K (2022) The pet mantis market: a first overview on the praying mantis international trade (Insecta, Mantodea). Journal of Orthoptera Research 31(1): 63-68. https://doi.org/10.3897/jor.31.71458

Ancient Mantis-Man Petroglyph Discovered in Iran

A unique rock carving found in the Teymareh rock art site (Khomein county) in Central Iran with six limbs has been described as part man, part mantis. Rock carvings, or petroglyphs, of invertebrate animals are rare, so entomologists teamed up with archaeologists to try and identify the motif. They compared the carving with others around the world and with the local six-legged creatures which its prehistoric artists could have encountered.

Entomologists Mahmood Kolnegari, Islamic Azad University of Arak, Iran; Mandana Hazrati, Avaye Dornaye Khakestari Institute, Iran; and Matan Shelomi, National Taiwan University teamed up with freelance archaeologist and rock art expert Mohammad Naserifard and describe the petroglyph in a new paper published in the open access Journal of Orthoptera Research

The Teymareh rock art site in central Iran (Markazi Province, Iran), where the petroglyph was found
Photo by Mr Mahmood Kolnegari

The 14-centimetre carving was first spotted during surveys between 2017 and 2018, but could not be identified due to its unusual shape. The six limbs suggest an insect, while the triangular head with big eyes and the grasping forearms are unmistakably those of a praying mantid, a predatory insect that hunts and captures prey like flies, bees and even small birds. An extension on its head even helps narrow the identification to a particular genus of mantids in this region: Empusa.

Even more mysterious are the middle limbs, which end in loops or circles. The closest parallel to this in archaeology is the ‘Squatter Man,’ a petroglyph figure found around the world depicting a person flanked by circles. While they could represent a person holding circular objects, an alternative hypothesis is that the circles represent auroras caused by atmospheric plasma discharges.

It is presently impossible to tell exactly how old the petroglyphs are, because sanctions on Iran prohibit the use of radioactive materials needed for radiocarbon dating. However, experts Jan Brouwer and Gus van Veen examined the Teymareh site and estimated the carvings were made 40,000–4,000 years ago. 

One can only guess why prehistoric people felt the need to carve a mantis-man into rock, but the petroglyph suggests humans have linked mantids to the supernatural since ancient times. As stated by the authors, the carving bears witness, “that in prehistory, almost as today, praying mantids were animals of mysticism and appreciation.”

Sarkubeh village (Markazi province, Iran) is the closest
to the studied site human habitation
Photo by Mr Mahmood Kolnegari

Original source:

Kolnegari M, Naserifard M, Hazrati M, Shelomi M (2020) Squatting (squatter) mantis man: A prehistoric praying mantis petroglyph in Iran. Journal of Orthoptera Research 29(1): 41-44. https://doi.org/10.3897/jor.29.39400