Acanthosomatidae | |
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Acanthosomatidae - relative sizes | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hemiptera |
Suborder: | Heteroptera |
Superfamily: | Pentatomoidea |
Family: | Acanthosomatidae Signoret, 1864 |
Subfamilies | |
Acanthosomatidae is a family of Hemiptera, commonly named "shield bugs" or "stink bugs". Kumar in his 1974 world revision recognized 47 genera; [1] now this number is 55 genera, with about 200 species, and it is one of the least diverse families within Pentatomoidea. [2] [3] The Acanthosomatidae species are found throughout the world, being most abundant in high-latitude temperate regions and in subtropical regions at high altitudes. [4]
One of the most well-known species in Acanthosomatidae is the hawthorn shield bug (Acanthosoma haemorrhoidale), which is found throughout Europe and also northern Siberia; this species is typically green or brown in color and has a distinctive shape with two projections on its thorax. It feeds on a variety of plants, including hawthorn, rowan, and cherry.
Acanthosomatidae have heads that are keeled laterally and possess a pair of 5-segmented antennae. The mesosternum has a strongly projecting keel. The tarsi of the legs are 2-segmented. The second visible abdominal sternite has an elongate spine that projects forwards. The spiracles of the second abdominal segment are concealed by the metapleura. Abdominal sternite III has paired trichobothria. In males, sternite VIII is exposed and there is a specialised genital capsule. In females, one or two pairs of Pendergrast's organs are present in the abdomen (sometimes absent, e.g. Elasmucha [4] ) and sternite VII has an emarginate posterior margin. [5]
In general appearance, Acanthosomatidae are similar to Pentatomidae. Various sources distinguish them based on the number of tarsal segments being 2 in acanthosomatids and 3 in pentatomids. [6] [7] However, some pentatomids have 2-segmented tarsi as well. [8]
Acanthosomatidae are mostly herbivores on trees and shrubs. Host plants include Ficus , Hakea , Carex , Juncus , Cladium and Dactylis . There are also records of predation (including cannibalism) and scavenging on carrion. [5]
Many species have females which take care of their offspring, guarding the eggs and nymphs. In these species, the Pendergrast's organs are absent or reduced and non-functional. Other species have a more limited form of care: females smear their eggs with secretions from the Pendergrast's organs (which may repel predators and parasitoids), then abandon the eggs. Egg smearing is the ancestral behaviour. [9]
Examples of genera and species:
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.
Pentatomidae is a family of insects belonging to the order Hemiptera, generally called shield bugs or stink bugs. Pentatomidae is the largest family in the superfamily Pentatomoidea, and contains around 900 genera and over 4700 species. As hemipterans, the pentatomids have piercing sucking mouthparts, and most are phytophagous, including several species which are severe pests on agricultural crops. However, some species, particularly in the subfamily Asopinae, are predatory and may be considered beneficial.
Elasmucha grisea, common name parent bug, is a species of shield bugs or stink bugs belonging to the family Acanthosomatidae. The term parent bugs includes also the other species of the genus Elasmucha and some species of the family Acanthosomatidae.
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.
Pentatominae is a subfamily of Pentatomidae, a family of shield bugs. This subfamily is the largest one within the Pentatomidae, having 4937 species classified in 938 genera. Species in this subfamily are phytophages and several of them are considered agricultural pests. Some invasive pentatomines such as Halyomorpha halys and Bagrada hilaris have been considered household pests. Higher systematics of the group have been revised by Rider et al.
The hawthorn shield bug is a common European shield bug. Its chief food is haws, the fruit of the hawthorn tree, but adults can overwinter on a diet of leaves, and individuals can be found on many potential food plants, including pedunculate oak, sessile oak and whitebeam. They may grow up to 17 mm (0.67 in) long, and are camouflaged in shades of green and brown. Like many so-called "stink bugs", they may release unpleasant odours when disturbed.
Elasmostethus interstinctus, the birch shield bug, is species of shield bug in the Acanthosomatidae family. Shield bugs are often called "stink bugs" because they excrete a foul smelling liquid that is used to deter predators.
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.
Peribalus strictus, common name Vernal Shieldbug, is a species of shield bugs in the family Pentatomidae.
Rhaphigaster is a genus of stink bugs in the family Pentatomidae. Its most well-known member is the mottled shieldbug, Rhaphigaster nebulosa.
Elasmostethus is a genus of shield bugs belonging to the family Acanthosomatidae.
Carpocorini is a tribe of stink bugs in the family Pentatomidae. There are more than 100 genera in Carpocorini.
Stiretrus anchorago, commonly known as the anchor stink bug, is a species of predatory stink bug in the family Pentatomidae. It is found in Central America and North America. It is known to prey upon Epilachna varivestis and Hypera postica.
Lyctocoridae is a reconstituted family of bugs, formerly classified within the minute pirate bugs of the family Anthocoridae. It is widely distributed, with one species, being cosmopolitan.
Monteithiella humeralis, commonly known as the pittosporum shield bug is a species of herbivorous shield bug native to Australia and introduced in New Zealand. As its common name suggests, it is most commonly observed feeding on Pittosporum plants.
Acanthosoma is a genus of shield bugs in the family Acanthosomatidae, found in Europe, Asia, and Oceania. There are over 30 described species in the genus Acanthosoma.
Cuspicona simplex, commonly known as the green potato bug, is a herbivorous species of stink bug native to Australia and introduced to New Zealand. It feeds on nightshades. It is primarily known as a pest of potatoes, tomatoes, and other crops in the nightshade family.
Rhopalimorpha is a genus of insects in the shield bug family Acanthosomatidae. It is native to Australia and New Zealand. There are four species in the genus, of which three are found in New Zealand.