''Photuris pensylvanica'', known by the

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrast ...

s Pennsylvania firefly, lightning bug, dot-dash firefly and (in its

larva A larva (; plural larvae ) is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle. The ...

l state)

glowworm Glowworm or glow-worm is the common name for various groups of insect larvae and adult larviform females that glow through bioluminescence. They include the European common glow-worm and other members of the Lampyridae, but bioluminescence also o ...

, is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

firefly The Lampyridae are a family of elateroid beetles with more than 2,000 described species, many of which are light-emitting. They are soft-bodied beetles commonly called fireflies, lightning bugs, or glowworms for their conspicuous production ...

from the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

and

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

. It is also widely known under the Latin name ''Photuris pennsylvanica'', although the original spelling, with one "n", was common in Latinized names of the time and remains the valid name.

Description

''P. pensylvanica'' is a somewhat flattened

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

to in length. Its primary color is black, but it has two bright red eyespots on its

thorax The thorax or chest is a part of the anatomy of humans, mammals, and other tetrapod animals located between the neck and the abdomen. In insects, crustaceans, and the extinct trilobites, the thorax is one of the three main divisions of the cre ...

, as well as yellow edging on its thorax and wing cases and usually a lengthwise yellow stripe partway down the center of each of the latter. The species is

carnivorous A carnivore , or meat-eater (Latin, ''caro'', genitive ''carnis'', meaning meat or "flesh" and ''vorare'' meaning "to devour"), is an animal or plant whose food and energy requirements derive from animal tissues (mainly muscle, fat and other sof ...

, feeding mostly on

insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs ...

s but also on other

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

s, such as

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

s and earthworms. The terminal segments of its abdomen are white-yellow and glow greenish-yellow when the

manifests its

bioluminescence Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some b ...

. The females of this species, like those of other members of the genus, lure males of other species by imitating their flash patterns in order to prey on them.

State insect

In 1974, ''P. pensylvanica'' was designated the state insect of

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

. Its designation as such started with a group of

Highland Park Elementary School Highlands or uplands are areas of high elevation such as a mountainous region, elevated mountainous plateau or high hills. Generally speaking, upland (or uplands) refers to ranges of hills, typically from up to while highland (or highlands) is ...

students A student is a person enrolled in a school or other educational institution. In the United Kingdom and most commonwealth countries, a "student" attends a secondary school or higher (e.g., college or university); those in primary or elementary ...

Upper Darby, Pennsylvania Upper Darby Township, often shortened to Upper Darby, is a home rule township in Delaware County, Pennsylvania. The township borders Philadelphia, the nation's sixth most populous city as of 2020 with 1.6 million residents. As of the 2020 ce ...

. Fireflies are abundant in Pennsylvania and are enjoyed for their ability to "transform a midsummer night into a

fairyland Fairyland (''Faerie'', Scottish ''Elfame'', c.f. Old Norse '' Álfheimr'') in English and Scottish folklore is the fabulous land or abode of fairies or ''fays''. Old French (Early Modern English ) referred to an illusion or enchantment, the land ...

of tiny, brilliant twinkling lights" Discovering that there was a species of firefly named after their state and that no other

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sover ...

had adopted a firefly as its state insect, the students began their campaign to have ''P. pensylvanica'' made Pennsylvania's state insect. With advice and support from state

legislator A legislator (also known as a deputy or lawmaker) is a person who writes and passes laws, especially someone who is a member of a legislature. Legislators are often elected by the people of the state. Legislatures may be supra-national (for ex ...

s, the students began a campaign that included letter writing, the circulation of petitions, and the distribution of

bumper sticker A bumper sticker is an adhesive label or sticker with a message, intended to be attached to the bumper of an automobile and to be read by the occupants of other vehicles—although they are often stuck onto other objects. Most bumper stickers are ...

s. On April 10, 1974,

Governor A governor is an administrative leader and head of a polity or political region, ranking under the head of state and in some cases, such as governors-general, as the head of state's official representative. Depending on the type of political ...

Milton J. Shapp Milton Jerrold Shapp (born Milton Jerrold Shapiro; June 25, 1912 – November 24, 1994) was an American businessman and politician who served as the 40th governor of Pennsylvania from 1971 to 1979 and the first Jewish governor of Pennsylvania. H ...

signed Act 59 into law, making the Pennsylvania firefly their state's official insect. A few years later, Highland Park Elementary School was presented with a

bronze Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids such ...

plaque Plaque may refer to: Commemorations or awards * Commemorative plaque, a plate or tablet fixed to a wall to mark an event, person, etc. * Memorial Plaque (medallion), issued to next-of-kin of dead British military personnel after World War I * Pla ...

in honor of the students' achievement. Many Pennsylvanians know these insects by the name "lightning bugs" and may have confused "firefly" with "

black fly A black fly or blackfly (sometimes called a buffalo gnat, turkey gnat, or white socks) is any member of the family Simuliidae of the Culicomorpha infraorder. It is related to the Ceratopogonidae, Chironomidae, and Thaumaleidae. Over 2,200 spec ...

" when that state was plagued by them in 1988. This might be why that year the legislature again confirmed the Pennsylvania firefly's official status and specified it by

scientific name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

. The amended act reads:

Section 1. The firefly (Lampyridae Coleoptera) of the species Photuris pensylvanica De Geer is hereby selected, designated and adopted as the official insect of the Commonwealth of Pennsylvania. (1 amended Dec. 5, 1988, P.L.1101, No.130)

The firefly is also the state insect of

Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...

, but in this case the specific species referred to (if any) may be ''

Photinus pyralis ''Photinus pyralis'', known by the common names common eastern firefly and big dipper firefly, is the most common species of firefly in North America. ''P. pyralis'' is a flying and light-producing beetle with a light organ on the ventral side of ...

'', the most common species of firefly in

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

References

{{Taxonbar, from=Q4046869 Beetles described in 1774 Taxa named by Charles De Geer Fauna of the Northeastern United States Photuris

Description

State insect

See also

References