Idiostolidae

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Idiostolidae
Systematics
Class : Insects (Insecta)
Order : Schnabelkerfe (Hemiptera)
Subordination : Bed bugs (heteroptera)
Partial order : Pentatomomorpha
Superfamily : Idiostoloidea
Family : Idiostolidae
Scientific name
Idiostolidae
Scudder , 1962

The Idiostolidae are a family of bedbugs (Heteroptera) within the suborder Pentatomomorpha . It comprises three genera and four species, none of which occurs in Europe.

features

The medium-sized bedbugs are five to seven millimeters long, have an elongated, egg-shaped body and are similar to the somewhat broader species of the genus Ozophora (family: Rhyparochromidae ).

Your head is directed forward. Point eyes ( Ocelli ) are formed. The four-part feelers turn in below the ventral edge of the compound eyes . The labium is also four-part. The cheek plates (bucculae) are short. The pronotum is divided into a collar and a disc area. The hemielytres have four longitudinal veins, with the corium having many longitudinal veins. A hamus (a hook-shaped transverse artery derived from the media in the disc cell) is formed on the hind wings. The olfactory gland openings on the metathorax have receded. They lack an area of ​​evaporation and a raised peritrema , a ring-shaped sclerite that surrounds the breathing openings. The legs are slender, their tarsi are tripartite. Numerous Trichobothria are formed on the third to seventh sternum of the abdomen . The terga and sterna on the abdomen have grown together. All the spiracles are ventral to the abdomen . Inner laterotergites are formed dorsally . In females, the seventh sternum is completely divided in the middle and the ovipositor is slashed (laciniat). The spermatheca is absent in the males . Your phallus is simple and has no vesica.

The nymphs have an egg-shaped body. They have their scent gland openings between the fourth and fifth as well as the fifth and sixth tergites on the abdomen, and there is a furrow between the third and fourth tergum as a small gland opening. The first and second tergum and the third to sixth sternum are fused.

Autapomorphies of the family are the location of the Trichobothria, the absence of the spermatheca and vesica and the broad, egg-shaped physique of the nymphs.

distribution

The family is disjoint in the cool, temperate regions of southeast Australia, Chile and Argentina. The animals live in moss and litter in pseudo-beech forests ( Nothofagus ).

Way of life

Apart from their living space requirements, little is known about the family's way of life. Schuh & Slater (1995) suggest that the animals are polyphagous , although there is no supporting evidence for this assumption.

Taxonomy and systematics

Geoffrey Scudder described the group for the first time in 1962 as a separate subfamily of the ground bugs (Lygaeidae), after the genera Idiostolus and Trisecus had been added to the subfamily Heterogastrinae, which today forms the family Heterogastridae . The Idiogastrinae was later raised to family rank by Pavel Štys and at the same time placed in its own superfamily. The current classification of the group was created in 1997 after a revision of the Pentatomomorpha with a focus on the Lygaeoidea by Thomas J. Henry. He placed the family together with the sister group Henicocoridae in the superfamily Idiostoloidea .

The family includes the following genera and species:

supporting documents

Individual evidence

  1. ↑ a b c d e Family Idiostolidae. Australian Biological Resources Study. Australian Faunal Directory, accessed March 28, 2014 .
  2. ↑ a b c d e f R. T. Schuh, JA Slater: True Bugs of the World (Hemiptera: Heteroptera). Classification and Natural History. Cornell University Press, Ithaca, New York 1995, p. 251.
  3. ^ Thomas J. Henry, Phylogenetic analysis of family groups within the infraorder Pentatomomorpha (Hemiptera: Heteroptera), with emphasis on the Lygaeoidea. Annals of the Entomological Society of America, 90, 3, pp. 275-301, 1997

literature

  • RT Schuh, JA Slater: True Bugs of the World (Hemiptera: Heteroptera). Classification and Natural History. Cornell University Press, Ithaca, New York 1995.