Coridius janus

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Coridius janus
Coridius janus 17.JPG
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Suborder: Heteroptera
Family: Dinidoridae
Genus: Coridius
Species:
C. janus
Binomial name
Coridius janus
(Fabricius, 1775)
Synonyms

Aspongopus janus

Coridius janus, sometimes known as the red pumpkin bug, is a species of bug in the family Dinidoridae. It feeds by sucking on the sap on soft parts of plants especially in the cucurbit family and causes damage to crops.

The species was originally described in the genus Cimex by Fabricius and later placed in the genus Aspongopus. The antenna is five segmented with the third segment longer than the first which is shorter than all other segments, the body outline is oval. The scutellum is short and has a rounded apex. The proboscis tip extends past the coxae of the first pair of legs. They are yellowish to orange red in colour with a black stripe on the anterior pronotal edge sometimes broke in the middle. The basal half of the scutellum and the membrane of the forewing is also black. [1] The species is widely distributed in tropical South and Southeast Asia but has spread to other parts of the world.

Red pumpkin bugs captured at noon, in West Bengal, India. Red pumpkin bugs (within the family of Pentatomidae; shield bugs or stink bugs) captured at noon.jpg
Red pumpkin bugs captured at noon, in West Bengal, India.

Coridius janus has been used in numerous physiological and anatomic studies that have demonstrated their strong cibarial muscles used for sucking sap. [2] [3] Like other bugs they produce defensive chemicals from metathoracic scent glands opening ventrally at the base of the third coxae. They produce chemicals that include 4,5-dimethyl diazole, (E)-2-hexenyl acetate, O-iso butenyl phenol, undecane, undecylamine, 1,12-Dodecan-diol and N-methyl dodec-6,10 diene amine. [4] These chemicals are known to repel ants (Anoplolepis longipes) and beetles and the effectiveness of a mixture of the key compounds trans-2-hexenal; n-tridecane (60:40 by weight) was greater than with comparative alkanes of shorter or longer lengths. [5]

Related Research Articles

<span class="mw-page-title-main">Hemiptera</span> Order of insects often called true bugs

Hemiptera is an order of insects, commonly called true bugs, comprising over 80,000 species within groups such as the cicadas, aphids, planthoppers, leafhoppers, assassin bugs, bed bugs, and shield bugs. They range in size from 1 mm (0.04 in) to around 15 cm (6 in), and share a common arrangement of piercing-sucking mouthparts. The name "true bugs" is often limited to the suborder Heteroptera.

<span class="mw-page-title-main">Pentatomoidea</span> Superfamily of true bugs

The Pentatomoidea are a superfamily of insects in the suborder Heteroptera of the order Hemiptera. As hemipterans, they possess a common arrangement of sucking mouthparts. The roughly 7000 species under Pentatomoidea are divided into 21 families. Among these are the stink bugs and shield bugs, jewel bugs, giant shield bugs, and burrower bugs.

<span class="mw-page-title-main">Pyrrhocoridae</span> Family of true bugs

Pyrrhocoridae is a family of insects with more than 300 species world-wide. Many are red coloured and are known as red bugs and some species are called cotton stainers because their feeding activities leave an indelible yellow-brownish stain on cotton crops. A common species in parts of Europe is the firebug, and its genus name Pyrrhocoris and the family name are derived from the Greek roots for fire "pyrrho-" and bug "coris". Members of this family are often confused with, but can be quickly separated from, Lygaeidae by the lack of ocelli on the top of the head.

<span class="mw-page-title-main">Coreidae</span> Family of insects

Coreidae is a large family of predominantly sap-sucking insects in the Hemipteran suborder Heteroptera. The name "Coreidae" derives from the genus Coreus, which derives from the Ancient Greek κόρις (kóris) meaning bedbug.

<span class="mw-page-title-main">Scutelleridae</span> Family of insects

Scutelleridae is a family of true bugs. They are commonly known as jewel bugs or metallic shield bugs due to their often brilliant coloration. With the name based on the Asian genus Scutellera, they are also known as shield-backed bugs due to the enlargement of the thoracic scutellum into a continuous shield over the abdomen and wings. This latter characteristic distinguishes them from most other families within Heteroptera, and may lead to misidentification as a beetle rather than a bug. These insects feed on plant juices from a variety of different species, including some commercial crops. Closely related to stink bugs, they may also produce an offensive odour when disturbed. There are around 450 species worldwide.

<span class="mw-page-title-main">Cydnidae</span> Family of true bug

Cydnidae are a family of pentatomoid bugs, known by common names including burrowing bugs or burrower bugs. As the common name would suggest, many members of the group live a subterranean lifestyle, burrowing into soil using their head and forelegs, only emerging to mate and then laying their eggs in soil. Other members of the group are not burrowers, and live above the soil layer, often in close association with plants. Several species are known as agricultural pests.

<i>Coreus marginatus</i> Species of true bug

Coreus marginatus is a herbivorous species of true bug in the family Coreidae. It is commonly known as the dock bug as it feeds on the leaves and seeds of docks and sorrels. It is a medium-sized speckled brown insect, between 13 and 15 mm long as an adult, with a broad abdomen. It occurs throughout Europe, Asia and northern Africa. It is often found in dense vegetation, such as hedgerows and wasteland.

<i>Calliphara nobilis</i> Species of jewel bug

Calliphara nobilis is a species of jewel bug found in Asia. Like all species of jewel bugs, it is phytophagous, feeding on the leaves, fruit and seeds of its host plants. This insect is notable for its multiple defense mechanisms: it is highly mobile and swarms disperse with a loud buzz when disturbed; it is aposematically colored, which serves as a warning to any would-be predators that it is unpalatable; and it possesses a robust chemical defense mechanism: it can secrete an irritating and toxic fluid from a pair of metathoracic scent glands when threatened.

<span class="mw-page-title-main">Tessaratomidae</span> Family of true bugs

Tessaratomidae is a family of true bugs. It contains about 240 species of large bugs divided into 3 subfamilies and 56 genera.

<span class="mw-page-title-main">Dinidoridae</span> Family of true bugs

Dinidoridae is a small family of hemipteran "true bugs" comprising about sixteen genera and a hundred species the Hemiptera suborder Heteroptera. As a group the family does not have any common name. Until the late 19th century they were generally regarded as a subfamily of Pentatomidae.

<i>Melamphaus</i> Genus of true bugs

Melamphaus is an Old World genus of true bugs in the family Pyrrhocoridae, mostly found in Asia. They are often confused with bugs in the family Lygaeidae, but can be distinguished by the lack of ocelli on the head.

<i>Musgraveia sulciventris</i> Species of true bug

Musgraveia sulciventris is a large stink bug found in Australia, sometimes known as the bronze orange bug. It is considered a pest, particularly to plants in the citrus group. Bronze orange bugs suck the sap from trees, which causes the flowers and fruit to fall.

<i>Euthyrhynchus floridanus</i> Species of true bug

Euthyrhynchus floridanus, the Florida predatory stink bug, is a species of carnivorous shield bug in the family Pentatomidae, the only species in the genus Euthyrhynchus. It is native to the hottest parts of the southeastern United States and is considered beneficial because it feeds on many species of pest insects. They also feed on things such as grasshoppers and other small insects. This species also hunts in a pack, with up to twelve.

<i>Alydus eurinus</i> Species of true bug

Alydus eurinus is a species of broad-headed bug in the family Alydidae. It is found in North America.

<span class="mw-page-title-main">Giant mesquite bug</span> Species of insect

The giant mesquite bug is an insect of the order Hemiptera, or the "true bugs". As a member of the family Coreidae, it is a leaf-footed bug. As the common name implies, it is a large bug that feeds on mesquite trees of the American Southwest and Northwestern Mexico.

<i>Cyclopelta</i> Genus of true bugs

Cyclopelta is a genus of Dinidorid bug found in Africa and Asia. There are 14 species in the genus with 8 found in Asia and 6 in Africa. Some species are known to form large aggregation on trees and can cause damage in a few trees of economic importance.

Rhynocoris marginatus is a species of assassin bug in the family Reduviidae. It is a predator of other insects and is found in Asia. Crops in India on which it has been found feeding on pests include sugarcane, pigeon pea, cardamom, cotton, tea, and peanuts. The insects are potentially useful in biological control because they are more resistant to pesticides than are the pests on which they feed.

Canopus is a genus of Neotropical bugs with about six species that form the family Canopidae. Bugs in the family Canopidae are small and have a convex lady-bird beetle like shape and are thought to be fungus feeders. The scutellum completely covers the abdomen and wings. The antennae are five segmented.

<i>Coridius</i> Genus of true bugs

Coridius is a genus of dinidorid bugs. They suck sap mainly from plants belonging to the family Cucurbitaceae. About forty species are known with a native distribution mainly in Africa and Asia. Several species are eaten in parts of South and Southeast Asia. Some species have extended into Europe and are considered as pests on cucurbit crops.

<i>Lyramorpha</i> Genus of insects

Lyramorpha is a genus of stink bugs in the family Tessaratomidae, subfamily Oncomerinae. It is known from Australia and New Guinea.

References

  1. Distant, W.L. (1902). Fauna of British India. Rhynchota. Volume I. London: Taylor and Francis. pp.  281-282.
  2. Rastogi, S. C. (1965). "The food pump and associated structures in Coridius janus (Fabr.) (Heteroptera: Dinidoridae)". Proceedings of the Royal Entomological Society of London. Series A, General Entomology. 40 (7–9): 125–134. doi:10.1111/j.1365-3032.1965.tb00331.x.
  3. Stebbing, E.P. (1903). "Notes on insect pests from the entomological section, Indian Museum I. Insect pests of fruit trees". Indian Museum Notes. 6: 63–77.
  4. Srinivasulu, C.; Janaiah, C. (2012). "Morphology and chemical composition of metathoracic scent glands in Coridius janus (heteroptera)". Journal of Experimental Zoology. 15 (1): 45–48.
  5. Gunawardena, N. E.; Herath, H. M. W. K. B. (1991). "Significance of medium chainn-alkanes as accompanying compounds in hemipteran defensive secretions: An investigation based on the defensive secretion of Coridius janus". Journal of Chemical Ecology. 17 (12): 2449–2458. doi:10.1007/BF00994593. ISSN   0098-0331. PMID   24258638. S2CID   23199127.