The giant leopard moth (''Hypercompe scribonia'') is a
moth
Moths are a group of insects that includes all members of the order Lepidoptera that are not Butterfly, butterflies. They were previously classified as suborder Heterocera, but the group is Paraphyly, paraphyletic with respect to butterflies (s ...
of the family
Erebidae
The Erebidae are a family (biology), family of moths in the superfamily Noctuoidea. The family is among the largest families of moths by species count and contains a wide variety of well-known macromoth groups. The family includes the underwin ...
. They are distributed through North America from southern
Ontario
Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
, and southern and eastern United States through
New England
New England is a region consisting of six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the ...
,
Mexico
Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...
, and south to
Colombia
Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...
.
The obsolete name, ''Ecpantheria scribonia,'' is still occasionally encountered.
They are known to be attracted to bitter, unripe vegetables and broccoli flowers.
This moth species has a
wingspan
The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...
of . Its wings are bright white with a pattern of neat black blotches, some solid and some hollow. The overside of the abdomen is dark blue with orange markings, while the underside is white with solid black spots, and males have a narrow yellow line on the sides. Their legs have black and white bands. Adult moths are strictly
nocturnal
Nocturnality is a ethology, behavior in some non-human animals characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnality, diurnal meaning the opposite.
Nocturnal creatur ...
and do not generally fly before nightfall.
This species has a notable sexual dimorphism in size, with the adult male reaching about in length, while the adult female grows up to .The leopard moth requires two years to complete its round of life. In Missouri, adults are on the wing from May to September and are
multivoltine.
During mating sessions, the wings of the male cover most of the female's abdomen, which can sometimes lead to the loss of wing scales in the female and have negative effects on her flight efficiency.
Their mating sessions are notably long-lasting, taking more than 24 hours. They stay mostly immobile during the whole process, but move from spot to spot to
thermoregulate, walking into shadowy areas if too hot or into sunlight if too cold. The male effectuates the locomotion, while the female folds her legs to make her easier to carry.
The
caterpillar
Caterpillars ( ) are the larval stage of members of the order Lepidoptera (the insect order comprising butterflies and moths).
As with most common names, the application of the word is arbitrary, since the larvae of sawflies (suborder ...
is of the "
woolly bear" kind, with a thick coat of black bristles (
setae
In biology, setae (; seta ; ) are any of a number of different bristle- or hair-like structures on living organisms.
Animal setae
Protostomes
Depending partly on their form and function, protostome setae may be called macrotrichia, chaetae ...
) and red or orange bands between its segments, which become conspicuous when the caterpillar rolls into a ball for defense. Like the
banded woolly bear, its hairs are not
urticant
Nettle agents (named after stinging nettles) or urticants are a variety of chemical warfare agents that produce corrosive skin and tissue injury upon contact, resulting in erythema, urticaria, intense itching, and a hive-like rash.
Most nettl ...
nor venomous and do not typically cause irritation. The moth
overwinters
Overwintering is the process by which some organisms pass through or wait out the winter season, or pass through that period of the year when "winter" conditions (cold or sub-zero temperatures, ice, snow, limited food supplies) make normal activi ...
as a caterpillar,
often under the bark of decaying wood.
The caterpillar grows to be long.
Recorded food plants
The caterpillar eats a variety of broadleaf plants, such as
broadleaf plantains,
dandelion
''Taraxacum'' () is a genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions. The scientific and hobby study of the genus is known as taraxacology. The genus has a near-cosmopolitan distribu ...
s, and
violets:
Gallery
File:Giant leopard moth caterpillar.jpg, Larval stage
File:Hypercompe scribonia.jpg, Caterpillar in typical defensive ball
File:Hypercompe scribonia - Caterpillar - Devonian Fossil Gorge - Iowa City - 2014-10-15 - image 1.jpg, Caterpillar with typical red stripes
File:Hypercompe scribonia - Caterpillar - Devonian Fossil Gorge - Iowa City - 2014-10-15 - image 3.jpg, Head of a caterpillar
File:GiantLeopardMoth.jpg, Closeup of head and thorax
File:LeopardMothBlueSpots edit2.jpg, Closeup showing iridescent blue spots
File:GiantLeopardMothHatched.jpg, Closeup of newly eclosed moth
File:GiantLeopardMothHatched2.jpg, Showing the old skin, empty pupal shell, and adult moth
Image:GiantLeopardMothHatched3.jpg, Last image at night before it flew off once wings dried
File:Giant_Leopard_Moth%2C_5-23-2012%2C_IN_-03.jpg, Wings spread, displaying abdomen colors
File:Giant_Leopard_Moth%2C_5-23-2012%2C_IN_-04.jpg, Close-up while wings upswept
File:Giant_Leopard_Moth%2C_5-23-2012%2C_IN_-05.jpg, The moment before take-off
File:Scale-less moth.jpg, A female giant leopard moth after mating
File:Female Giant Leopard Moth taking off.jpg, A female taking off
References
External links
Hilton Pond CenterSpecies ''Hypercompe scribonia'' – giant leopard moth - Hodges#8146 BugGuide
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Moths of North America
Hypercompe
Moths described in 1790