The Perissommatidae are a family of flies (Diptera) that was proposed in 1962 by Donald Colless based on the species Perissomma fusca from Australia. The family now includes five extant species within the single genus Perissomma, four from Australia and one from Chile. The Perissommatidae are unusual as they appear to have four compound eyes. They have a small slender body less than 2 mm in length. Their wings are large in comparison to their bodies and subsequently their flight is weak. Preferring high-altitude forest environments, adults only fly in the winter. The larvae live in decaying leaf litter in wet sclerophyll or cool rain forests. Some species are suspected to be associated with fungi. In the case of Perissomma macalpinei, numbers of adults have been observed congregating in clumps of foliage and rising in short, zigzag flights in the sunlight above the foliage for short periods before descending.[3][4]
Fossils of the family are known from the Middle Jurassic to Early Cretaceous of Eastern and Northern Asia.[5]
After[5]
The Perissommatidae are a family of flies (Diptera) that was proposed in 1962 by Donald Colless based on the species Perissomma fusca from Australia. The family now includes five extant species within the single genus Perissomma, four from Australia and one from Chile. The Perissommatidae are unusual as they appear to have four compound eyes. They have a small slender body less than 2 mm in length. Their wings are large in comparison to their bodies and subsequently their flight is weak. Preferring high-altitude forest environments, adults only fly in the winter. The larvae live in decaying leaf litter in wet sclerophyll or cool rain forests. Some species are suspected to be associated with fungi. In the case of Perissomma macalpinei, numbers of adults have been observed congregating in clumps of foliage and rising in short, zigzag flights in the sunlight above the foliage for short periods before descending.
Fossils of the family are known from the Middle Jurassic to Early Cretaceous of Eastern and Northern Asia.
Perissommatidae est une famille de diptères.
Selon Catalogue of Life (1 mars 2013)[1] :
Perissommatidae est une famille de diptères.
Perissommatidae zijn een familie uit de orde van de tweevleugeligen (Diptera), onderorde muggen (Nematocera). Wereldwijd omvat deze familie 5 genera en 9 soorten.
Perissommatidae er en liten familie av små mygg som i dag bare er kjent fra Australia og Chile, men det finnes fossile arter fra andre verdensdeler. De er trolig nært beslektet med gjødselmyggene.
Små, kraftig bygde mygg, ligner gjødselmygg. De har store fasettøyne som er delt i en øvre og en nedre del. Karakteristisk vingeårenett.
De er skogsinsekter. Larvene til en art er blitt funnet i steinsopp (Boletus), andre larver har blitt funnet mellom råtnende løvstrø. De voksne insektene klekkes om vinteren.
I nyere systematikk blir familien gjerne skilt ut i en gruppe for seg (Perissommatomorpha) sammen med den utødde familien Boholdoyidae.
Perissommatidae er en liten familie av små mygg som i dag bare er kjent fra Australia og Chile, men det finnes fossile arter fra andre verdensdeler. De er trolig nært beslektet med gjødselmyggene.
Perissommatidae Colless, 1962
Подсемейства Геохронология
Perissommatidae (лат.) — реликтовое семейство двукрылых насекомых из инфраотряда Psychodomorpha.
Perissommatidae обычно имеют четыре глаза за счёт того, что каждый глаз разделен на верхний и нижний компанент. Личинки маленькие тонкие не больше 2 мм[1].
Комары встрачаются зимой в лесах, личинки развиваются во влажной листовой подстилке и плодовых телах грибов[1].
Представители семейства распространены на территории Австралии и Чили[2].
Семейство подразделяется на три подсемейства[3] и включает 5 современных и 5 вымерших видов. Кроме приведенных ниже родов, с Perissommatidae сближают род Gurvaniella Kovalev, 1986, который описан из нижнего мела Монголии[4].
Perissommatidae (лат.) — реликтовое семейство двукрылых насекомых из инфраотряда Psychodomorpha.
