clearwing moth

A new species of clearwing moth, Carmenta brachyclados, has been found in Port Talbot, Wales, and described by Natural History Museum scientists
Not a native to the UK, the moth is a denizen of the tropical jungles of South America
The two Welsh specimens had been accidentally brought into Europe, in a boot bag brought back from a photography trip to Guyana

Carmenta brachyclados. Photo by Mark Sterling

A new species of moth has been described far away from home following a cross-continent detective journey that included Natural History Museum scientists from separate fields, a budding young ecologist with a knack for community science, a globe-trotting photographer, and two moths new to science which travelled over 4,500 miles from their native country.

An individual of Carmenta brachyclados on the finger of Daisy Cadet. Photo by Daisy Cadet

The species is a clearwing moth and has been named Carmenta brachyclados, in reference to a characteristically short hindwing vein. Despite having never been catalogued in its native country, Guyana, a surprising sequence of events led to its being described after being spotted flying around a home in Port Talbot, Wales.

In February this year, the new species was spotted flying around the home of ecologist Daisy Cadet and her mother, Ashleigh, a professional photographer. Captured by the moth’s striking appearance, which stood out as being out of the ordinary for a house moth in the UK during winter, Daisy uploaded an image to social media which set the chain of events into motion.

Daisy was referred to Natural History Museum lepidoptera experts, Mark Sterling and David Lees, having been advised she had stumbled upon something out of the ordinary by social media users. Mark and David started seeking a match of the Wales specimens in terms of appearance to the clearwing collection contained within the 13.5 million Lepidoptera specimens housed at the NHM – the world’s largest and most diverse collection.

Taking the investigation a step further, Sterling and Lees aided by the museum’s Jordan Beasley, carried out DNA sequencing on the moth and found that its closest match was a group of seed-feeding clearwing moths, Carmenta, which occur in Central America and South America. This finding prompted Daisy to look inside Ashleigh’s bag, which had accompanied her on a photography assignment in Guyana.

Two delicate pupal casings, still intact, were found among the mud from the boots she’d worn on the trip along with a small piece of woody vegetation with what looked like bore holes made by the caterpillars of the moths.

Mora excelsa plant fragment from which clearwings emerged with 50 p piece. Photo by Mark Sterling

Mark Sterling, a Scientific Associate at the Natural History Museum, commented: “Clearwing moths are notoriously difficult to find, even by professional entomologists. They are even more difficult to rear from larvae or pupae, which usually dry out or go mouldy within a few days of collection.

“The chances of two clearwing moths from the Neotropics successfully emerging in South Wales, over three months after they arrived, in cold Welsh winter, and being preserved in good condition, is extraordinary.”

“The improbability of this event defies rational explanation. However, whilst in Guyana, Ashleigh was told that if she left an offering of tobacco to the jungle spirits she would be shown something beautiful from the jungle, so that is what she did. We conclude in the paper that it must have been very good tobacco.”

Dr David Lees, Senior Curator for Microlepidoptera at the Natural History Museum, added: “To add to the improbability of this story is the fact that due to the incredible piece of community science from Daisy, we have photographs of a living holotype (an original specimen which forms the basis of the name and description of that species), which is highly unusual.”

A live female individual of Carmenta brachyclados. Photo by Daisy Cadet

Along with now having a country of origin for this new species, they also had a small piece of the host plant on which the larvae had evidently fed. The plant fragment was sent to Natural History Museum botanist, Sandy Knapp, who advised it was likely to be a seed pod of a species of Mora, a suggestion confirmed by DNA sequencing by Jordan. A large leguminous tree, Mora excelsa grows in the jungles of Central America and South America.

Map of Guyana showing the most likely sampling positions (white circles: Turtle Mountains and Iwokrama Forest/Iwokrama River Lodge) for the seedpod of *Mora excelsa* with the two live pupae of *Carmenta brachyclados* inside. Credit: Google Earth/Landsat/Copernicus/Rivers_Guyana.mkl/Guyana regions english.png (CC by 2.5).

The final step was to compare Daisy’s moth specimens to the vast number of species within the Carmenta genus – where only half of the 100 described species have been DNA barcoded. Using analyses of DNA and the specimens’ body plan compared to others on record, Mark and David concluded that this was indeed an undescribed species.

This paper ‘A success for community science: Carmenta brachyclados sp. nov. (Lepidoptera, Sesiidae, Synanthedonini), a clearwing moth from Guyana discovered with its hostplant indoors in Wales (United Kingdom)’ was published in Nota Lepidopterologica and can be accessed here https://nl.pensoft.net/issue/4736/

Research article:

Sterling MJ, Cadet DT, Beasley J, Lees DC (2024) A success for community science: Carmenta brachyclados sp. nov. (Lepidoptera, Sesiidae, Synanthedonini), a clearwing moth from Guyana discovered with its hostplant indoors in Wales (United Kingdom). Nota Lepidopterologica 47: 201-218. https://doi.org/10.3897/nl.47.130138

Unique footage of a new species of clearwing moth has been recorded in a primeval rainforest in Peninsular Malaysia revealing the behaviour of this elusive insect.

Clearwing moths, which are day-flying insects belonging to the Sesiidae family, imitate bees and wasps. Apart from the common species considered as agricultural pests, these moths are known mainly from old museum specimens, stored on pins in forgotten drawers. In the wild, they are elusive creatures, rarely spotted and, hence, poorly studied.

Marta Skowron Volponi from the University of Gdansk, Poland, a PhD student specialising in entomology, teamed up with nature filmmaker and photographer Paolo Volponi, associated with the ClearWing Foundation for Biodiversity, to find these intriguing insects. The results of their studies were recently published in ZooKeys.

In their search for clearwing moths, they went deep into the virgin Malaysian jungle, where elephants, tigers, tapirs and other charismatic Southeast Asian animals roam, while dealing with the intense heat, humidity and countless blood-suckers.

In the end, however, their effort was worth it: on a bank of a crystal clear river, during the hottest hours of the day, the researchers discovered a new species of clearwing moth displaying behaviour known as mud-puddling.

“Mud-puddling is the process of sucking-up liquids in order to gain essential nutrients, such as salt or proteins”, explains Marta. “It has only recently been observed in clearwing moths and, similarly as in other Lepidopterans, it seems to be restricted to males”.

The newly discovered species was named Pyrophleps ellawi in honour of Marta and Paolo’s Malaysian friend EL Law who supported the team during their expeditions and who has a deep affinity for nature.

Curiously, rather than resembling a butterfly’s relative, the new moth looks like an insect from a whole different order. It mimics potter wasps.

“It has a slender body, long legs and transparent wings with a blue sheen in sunlight, similarly to some species of potter wasps”, says Marta.

Furthermore, while observing the moth in the wild, the authors noticed that it does not only look like a wasp – it also flies like one.

“There were potter wasps in the same area. In flight, the two insects were impossible to distinguish, they would always confuse us!”

The new species seems to be quite rare. During the authors’ three expeditions to Malaysia, they managed to see only eight individuals with each of them seen on a different day.

“So there we were: on our knees on a sandy beach, in the middle of the jungle, trying to film the 1.5 cm moth”, Marta recalls. “We didn’t have much time: a single clearwing would come around 2:00 PM and stay for several minutes only. We knew that once it flew away, we would not get another shot”.

“Could it be that their rarity is the reason why the behaviour of clearwing moths is practically unknown and why there are still new species waiting to be discovered?” the researchers wonder.

###

Original source:

Skowron Volponi MA, Volponi P (2017) A new species of wasp-mimicking clearwing moth from Peninsular Malaysia with DNA barcode and behavioural notes (Lepidoptera, Sesiidae). ZooKeys692: 129-139. Doi: 10.3897/zookeys.692.13587

Tag: clearwing moth

New species of clearwing moth from Guyana discovered in Wales

Rare footage of a new clearwing moth species from Malaysia reveals its behavior