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Helcystogramma Trigonella
''Helcystogramma trigonella'' is a moth in the family Gelechiidae. It was described by Walsingham in 1892. It is found in the West Indies. The wingspan is about 11 mm. The forewings are greyish brown, with a small ferruginous spot at the end of the discal cell, margined on its upper and outer side with whitish-ochreous scales. There is a whitish-ochreous line from the base along the dorsal margin to the bulge of the wing, but not continued where the margin becomes straight. A faint whitish-ochreous spot or group of scales is found on the extreme costal margin at one-fifth from the apex. The hindwings are brownish grey, with a tuft of greyish-ochreous hairs above at the base.On the micro-lepidoptera of the West Indies


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Moth
Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of which have yet to be described. Most species of moth are nocturnal, but there are also crepuscular and diurnal species. Differences between butterflies and moths While the butterflies form a monophyletic group, the moths, comprising the rest of the Lepidoptera, do not. Many attempts have been made to group the superfamilies of the Lepidoptera into natural groups, most of which fail because one of the two groups is not monophyletic: Microlepidoptera and Macrolepidoptera, Heterocera and Rhopalocera, Jugatae and Frenatae, Monotrysia and Ditrysia.Scoble, MJ 1995. The Lepidoptera: Form, function and diversity. Oxford, UK: Oxford University Press; 404 p. Although the rules for distinguishing moths from butterflies are not well establishe ...
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Gelechiidae
The Gelechiidae are a family of moths commonly referred to as twirler moths or gelechiid moths. They are the namesake family of the huge and little-studied superfamily Gelechioidea, and the family's taxonomy has been subject to considerable dispute. These are generally very small moths with narrow, fringed wings. The larvae of most species feed internally on various parts of their host plants, sometimes causing galls. Douglas-fir (''Pseudotsuga'') is a host plant common to many species of the family, particularly of the genus ''Chionodes'', which as a result is more diverse in North America than usual for Gelechioidea. By the late 20th century, over 900 genera with altogether more than 4,500 species were placed here, with about 650 genera known from North America alone. While these figures are certainly outdated, due to the many revisions to superfamily Gelechioidea and new descriptions of twirler moths, they still serve to show the enormous biodiversity contained in this import ...
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West Indies
The West Indies is a subregion of North America, surrounded by the North Atlantic Ocean and the Caribbean Sea that includes 13 independent island countries and 18 dependencies and other territories in three major archipelagos: the Greater Antilles, the Lesser Antilles, and the Lucayan Archipelago. The subregion includes all the islands in the Antilles, plus The Bahamas and the Turks and Caicos Islands, which are in the North Atlantic Ocean. Nowadays, the term West Indies is often interchangeable with the term Caribbean, although the latter may also include some Central and South American mainland nations which have Caribbean coastlines, such as Belize, French Guiana, Guyana, and Suriname, as well as the Atlantic island nations of Barbados, Bermuda, and Trinidad and Tobago, all of which are geographically distinct from the three main island groups, but culturally related. Origin and use of the term In 1492, Christopher Columbus became the first European to record his arri ...
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Wingspan
The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the other wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingspan of , the official record for a living bird. The term wingspan, more technically extent, is also used for other winged animals such as pterosaurs, bats, insects, etc., and other aircraft such as ornithopters. In humans, the term wingspan also refers to the arm span, which is distance between the length from one end of an individual's arms (measured at the fingertips) to the other when raised parallel to the ground at shoulder height at a 90º angle. Former professional basketball player Manute Bol stood at and owned one of the largest wingspans at . Wingspan of aircraft The wingspan of an aircraft is always measured in a straight line, from wingtip to wingtip, independently of wing shape or sweep. Implications for aircraft design and anima ...
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Moths Described In 1892
Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of which have yet to be described. Most species of moth are nocturnal, but there are also crepuscular and diurnal species. Differences between butterflies and moths While the butterflies form a monophyletic group, the moths, comprising the rest of the Lepidoptera, do not. Many attempts have been made to group the superfamilies of the Lepidoptera into natural groups, most of which fail because one of the two groups is not monophyletic: Microlepidoptera and Macrolepidoptera, Heterocera and Rhopalocera, Jugatae and Frenatae, Monotrysia and Ditrysia.Scoble, MJ 1995. The Lepidoptera: Form, function and diversity. Oxford, UK: Oxford University Press; 404 p. Although the rules for distinguishing moths from butterflies are not well establishe ...
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Helcystogramma
''Helcystogramma'' is a genus of moths in the family Gelechiidae. The genus was erected by Philipp Christoph Zeller in 1877. Distribution and diversity The genus is distributed almost worldwide, with around half of known taxa occurring in Asia. In 1997 there were about 93 valid species, and more have since been described. Species *'' Helcystogramma abortiva'' (Walsingham, 1911) *'' Helcystogramma adaequata'' Meyrick, 1914 *''Helcystogramma albilepidotum'' Li & Zhen, 2011 *''Helcystogramma albinervis'' (Gerasimov, 1929) *''Helcystogramma amethystium'' (Meyrick, 1906) *''Helcystogramma angustum'' Li & Zhen, 2011 *''Helcystogramma anthistis'' (Meyrick, 1929) *''Helcystogramma archigrapha'' (Meyrick, 1929) *'' Helcystogramma armatum'' (Meyrick, 1911) *''Helcystogramma arotraeum'' (Meyrick, 1894) *'' Helcystogramma arulensis'' (Rebel, 1929) *''Helcystogramma aruritis'' (Meyrick, 1911) *'' Helcystogramma augusta'' (Meyrick, 1911) *''Helcystogramma badia'' (Braun, 1921) *''Helcystogra ...
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