Amata huebneri, photo by Bramadi Arya | used under CC-BY-SA
Amata hubneri is a day flying moth in the superfamily Actiinae of tiger
moths and woolly bears. It is the smallest species in its genus. It can be found all over Singapore and most of Southeast Asia and yet little is known about its ecology and life cycle. In addition it is a member of a phylogenically uncertain and continually changing branch of the tree of life which obscures what information there actually is. The page aims to collect and present a large chunk of the information that exists on the species
Not much is known about the ecology of different life stages of Amata huebneri.
Photos, illustrations or even descriptions of the larvae, caterpillars, of the moth is very hard to find, they are however documented to feed on a rice, Oryza sativa1
. Common features of all caterpillars in Arctiinae is secondary setae that make the caterpillar fluffy 2
, hence the common name woolly bears. One article lists Amata huebneri as a minor species attacking Mikania micrantha, a mile a minute weed, in peninsular Malaysia 3
There is no formal documentation on adult feeding habits 4 but videos and photos show them feeding on, and therefore pollinating a variety of flowers. The species can be found in various places around Singapore, this video is showing Hübners wasp moth feeding with its probiscus on a coatbutton flower, Tridax procumbens.
As its common name suggests Amata huebneri is a wasp mimic. Other genera are made unpalatable or poisonous due to their diet 4
, however, no species of Amata are known to be so. Therefore Hübners wasp moth is likely a batesian mimic despite its diet being largely unknown, predation is reduces even though the moth itself is eadible since predators learn to avoid eating thing with this color and pattern.
Amata huebneri copulates, as most other moths, facing opposite directions with posterior ends of abdomen meeting 5 as in the video below. Wings are held horizontally which is common among Amata species 5 . In most cases the females head will be pointing upward (to the sky) during copulation, one source indicates that this might not be the case in Amata huebneri but results are not conclusive 5 .
Concervation and Ecological importance
The conservation status of Amata Huebneri has not been assessed be IUCN 6
. Likely the species is currently of least concern but it is concerning that we know so little of its life cycle. It is notable that the caterpillars have been found to feed on rice since this might be of economical importance would the species to become a pest under particular circumstances. Hübners wasp moth caterpillars must, however, have some other host plant in Singapore since they are reproducing here as well. What this plant or plants might be is unknown as far as I know.
On the other hand there might be unknown interactions the pollinating adults and flowering plants or with predators. Disruption of these trophic web interactions might have dire consequences of hardly any at all, we just don't know. This is not a one off thing, many common insect species, especially in the tropics, are poorly studied. Many, more cryptic and night active genera, are even worse of than Amata.
Is It really Amata huebneri?
Many other species of Amata look similar to A. huebneri. Most are distributed through other parts of Asia or are African species. Investigating the distribution of a species can be of great help in avoiding misidentifications.
Distrubution of Amata huebneri
A. huebneri is present in most of south-east Asia, including Singapore, as well as in northern parts of Australia 7
The only other Singapore native species that might cause misidentification is Amata dilitata. This species has similar wings and pattern but is brown rather than black, with yellow windows and only one large window on the hind wing 8
It might also be confused with Amata trigonophora since the pattern of body and wings are fairly similar. Amata trigonophora is not native to south east Asia but the species might overlap in north-eastern Austrailia. A. trigonophora can however easily be distinguished by larger size, it has a wingspan of about 30 mm 9 , and by the yellow coloration of its wing windows.
Left: Amata huebneri, photo by Gael Lafond | Right: Amata trigonophora, photo by Donald Hobern | used under CC-BY-SA
MorphologyAmata huebneri is small moth with a wingspan of 22-24 mm 11 , black with orange markings. Important morphological features are summarized in the table and in the picture to the right.
Moderate length (shorter than fore wing), black with white apical segments.
Black with six, thin, orange stripes in males, five in females13
|Thorax||Black, notum (over side of thorax) with orange markings as well as streaks of blue hairs (usually not visible to naked eye)|
|Wings||Black with translucent windows on fore and hind wings as picture (below).|
Original descriptionThe original description was published in 1829 by Jean Baptiste Boisduval in a monograph on moths. The
description is in French and under the original species name Syntomis hubneri 14 .
SynonymsIn the first description Biosduval placed the species in the genus Syntomis but the genus has been changed multiple times since then, as has the species epithet. The following is a list of synonyms to the accepted name Amata huebneri (=hubneri or hübneri) 15 :
- Syntomis hubneri
- Syntomis marsdeni
- Syntomis xanthomela
- Syntomis marsdeni
- Naclia cingulata
- Buthysia sangaris
- Syntomis contermina
- Hydrusa pyrrhodera
- Syntomis frustulenta
- Syntomis sala
- Amata sala
Etymology: meaning of the nameHübner is a Germanic name meaning farmer, possibly the species is named after the German lepidopterist Jacob Hübner. The latin word amata can be translated to beloved.
Expert identification methods
Thankfully Obraztsov 18 also includes a key using more easily observable features. A rough translation of the final step in determining Amata huebneri reads: Hind wings with two, more or less, distinct spots. Antennae of male sawtooth, of female simple. Smaller species (Length of fore wing: up to 12 mm).
SystematicsThe systematics of the tiger moths and wooly bears, Arciinae, is far from set in stone. Change has been extensive the last 20 years and relationships between Arciinae and other taxa within the superfamily Noctuidea are still uncertain 21 .
TaxonomyThe current, taxonomic placement of Amata huebneri is as follows 4 7 8 :
Species: Amata huebneri
The table below summarizes some of the historical changes to the taxonomy of Arciinae. Knowledge of such changes is necessary for analysis of available literature. The book tiger moths and woolly bears from 20008 21 and the website moths of Borneo4 , for example, places Syntomini in Syntominae instead of Actinae. In addition, genus Amata has previously been placed under subfamily Ctenuchinae22 .
A 2014 paper 4 constructs a tree for some large taxa in Arctiinae including Syntomini with two species of genus Amata (not A. huebneri). The study uses MAFFT alignment of nine different sequences including one mitochondrial (COI) and 8 nuclear genes. Results show strong support for genus Amata(100/1) and tribe Syntomini(100/1) using maximum likelihood and Bayesian posterior probability. However, as mentioned, the limited sample size makes the results less reliable.
|1||G. S. Robinson, P. R. Ackery, I. J. Kitching, G. W. Beccaloni, L. M. Hernández (2001). Hostplants of the Moth and Butterfly Caterpillars of the Oriental Region. London: The Natural History Museum. p. 37.|
|2||W. E. Conner (2008). Tiger Moths and Woolly Bears: Behavior, Ecology, and Evolution of the Arctiidae. UK: Oxford University Press pp. 11-30 [ a b c ]|
|3||D. F. Waterhouse (1994). Biological Contol of Weeds: Southeast Asian Prospects. Australia: Australian Centre for Intemational Agricultural Research.|
|4||J. M. Zaspel, S. J. Weller, C. T. Wardwell, R. Zahiri, N. Wahlberg (2014. Phylogeny and Evolution of Pharmacophagy in Tiger Moths (Lepidoptera: Erebidae: Arctiinae). PLoS ONE 9(7). [ a b c d e f ]|
|5||A. Miyata, H. S. Yong, Y. Ikeda, H. Hasegawa (2003). Copulation postures in Lepidoptera (Insecta). Trans. Lep. Soc. Japan 54(1) pp. 47-67. [ a b c ]|
|6||IUCN (2017). Accessed 2017-01-12.|
|7||R. Zahiri, J. D. Holloway, I. J. Kitching, J. D. Lafontaine, M. Mutanen, N Wahlberg (2011). Molecular phylogenetics of Erebidae (Lepidoptera, Noctuoidea). Systematic Entomology 37 (1) pp. 102–124. [ a b c ]|
|8||Ł. Przybyłowicz, W. Morek, B-K. Byun (2016). Taxonomic review of the tribe Syntomini (Lepidoptera: Erebidae: Arctiinae) in Korea. Journal of Asia-Pacific Entomology 19 pp. 785–791 [ a b c ]|
|9||D. Herbison-Evans, S. Crossley (2017). Australian Caterpillars and their Butterflies and Moths: A. huebneri. Accessed: 2017-11-13.|
|10||G. F. Hampson (1898). Catalogue of Lepidoptera[. British museum: London. p. 69.|
|11||G. F. Hampson (1898). Catalogue of Lepidoptera[. British museum: London. p. 69.|
|12||N. S. Obraztsov (1966). Die palaearktischen Amata-Arten (Lepidoptera, Ctenuchidae). Müchen: Veröffentlichungen der Zoologischen Staatssammlung München . pp. 57-67.|
|13||G. F. Hampson (1898). Catalogue of Lepidoptera[. British museum: London. p. 69.|
|14||J. A. Biosduval (1829). Essai sur une monographie des zygénides, suivi du tableau méthodique, des lépidoptères d'Europe. Chez Méquignon-Marvis: Paris. pp. 127-128.|
|15||M. Savela. Tree of life: Amata Fabricius, 1807. Accessed: 2017-11-13.|
|16||The Moths of Borneo (2017). Accessed 2017-11-13.|
|17||N. S. Obraztsov (1966). Die palaearktischen Amata-Arten (Lepidoptera, Ctenuchidae). Müchen: Veröffentlichungen der Zoologischen Staatssammlung München . pp. 57-67.|
|18||N. S. Obraztsov (1966). Die palaearktischen Amata-Arten (Lepidoptera, Ctenuchidae). Müchen: Veröffentlichungen der Zoologischen Staatssammlung München . pp. 57-67.|
|19||The Moths of Borneo: Syntominae (2017). Accessed 2017-11-13.|
|20||D. Herbison-Evans, S. Crossley (2017). Australian Caterpillars and their Butterflies and Moths: A. trigonophora. Accessed: 2017-11-13.|
|21||W. E. Conner (2008). Tiger Moths and Woolly Bears: Behavior, Ecology, and Evolution of the Arctiidae. UK: Oxford University Press. pp. 11-30. [ a b c d ]|
|22||G. D. Schneider, L. Legal, W. Dierl, M. Wink (1999). Androconial Hairbrushes of the Syntomis (Amata) phegea (L.) Group (Lepidoptera, Ctenuchinae): A Synapomorphic Character Supported by Sequence Data of the Mitochondrial 16S rRNA. Z Naturforsch C 54(12) pp.1119-1139. [ a b c ]|
|23||J. A. Biosduval (1829). Essai sur une monographie des zygénides, suivi du tableau méthodique, des lépidoptères d'Europe. Chez Méquignon-Marvis: Paris. pp. 127-128.|
|24||J. A. Biosduval (1829). Essai sur une monographie des zygénides, suivi du tableau méthodique, des lépidoptères d'Europe. Chez Méquignon-Marvis: Paris. pp. 127-128.|
This page was authored by Klara Emma Victoria Haakansson
Last curated on 2017