Mosquito-de-banheiro,Mosca-de-banheiro ( Psychoda alternat

Psychoda alternata 

Mosquito de banheiro,Mosca de banheiro

Psychoda e Telmatoscopus são gêneros de dípteros que fazem parte da família Psychodidae e são conhecidas como moscas de banheiro, mosca-dos-filtros, mosca-de-banheiro ou chamexuga. As 380 espécies validamente descritas do Psychoda são encontradas em todo o mundo, sendo quatro espécies encontradas comumente no Brasil. Estas moscas são pequenas e pilosas, e suas larvas eclodem em ralos e encanamentos do esgoto. A espécie Telmatoscopus albipunctatus também recebe o mesmo nome comum. Estas moscas depositam seus ovos nas paredes dos ralos, próximas à superfície da água.

INSETO ADULTO (VEJA VÍDEO ACIMA)

O moquito de banheiro ou mosca de Psychoda alternata (Vídeo)  pertence à família Psychodidae, subordem Nematocera, ordem Diptera.  Seu nome comum vem de sua tendência a viver e se reproduzir em águas rasas e poluídas. O adulto voa e tem com cinza escuro, formato triangular, de 3 a 5 mm de comprimento. Caracteriza-se pela cobertura densa de pelos compridos no corpo nas asas. O adulto tem antenas longas (12 a 15 segmentos) e as asas são em forma de folha. Psychodidae são principalmente noturnos e se alimentam de matéria orgânica e microrganismos. Eles são inofensivos e não podem picar.

OVO

Psychoda alternata (Os ovos tem aproximadamente 0,5mm)

 As fêmeas põe entre 20 a 100 ovos colocando-os de forma irregular na superfície das plantas e nas laterais dos drenos. Os ovos eclodem em 48 h em pequenos verme pálido como larvas (1-2mm), que muda sete vezes para atingir a maturidade em 9-15 dias.

LARVA

Psychoda alternata  Larva

Larva características físicas 

Psychoda alternata   (Larva)

 As larvas maduras são subcilíndricas com cabeça estreita com aparencia de verme que se movimenta constantemente a procura de alimento que constitui-se de matéria orgânica em decomposição.

PUPA

Psychoda alternata (Pupa)

 Período de pupa é 20 a 40 horas e o ciclo de vida inteiro é cerca de 21 a 27 dias podendo assim ter várias gerações durante o  ano (Vaillant, 1971; Quate e Brown, 2004).

DESCRIPTION: 

Life cycle_File:Drain fly larva _Live drain fly larvae 

The larvae of the subfamilies Psychodinae, Sycoracinae and Horaiellinae live in aquatic to semi-terrestrial or sludge-based habitats, including bathroom sinks, where they feed on bacteria and can become problematic. The larvae of the most commonly encountered species are nearly transparent with a non-retractable black head and can sometimes be seen moving along the moist edges of crevices in shower stalls or bathtubs or submerged in toilet water. The larval form of the moth flies is usually between 4 mm and 5 mm long, and is shaped like a long, thin, somewhat flattened cylinder. The body lacks prolegs, but the body segments are divided into a series of rings called annuli (singluar annulus). Some of these rings will have characteristic plates on the dorsal side. The larval thorax is not significantly larger than its abdomen, giving it a more "worm-like" appearance than that of most aquatic insect larvae. In some species, the larvae are able to secure themselves to surfaces of their environment using "attachment disks" on their ventral side. Like mosquito larvae, they are unable to absorb oxygen through water and instead breathe via a small dark tube (a spiracle) located on their posterior end— they must regularly reach the surface to obtain oxygen. The larval stage lasts for between 9 and 15 days, depending on species and on temperature/ environment. There are four instars.In small numbers, the larvae are sometimes considered beneficial as their strong jaws are capable of cutting through the hair and sludge waste in drains which might otherwise form clogs. However, unless this sludge layer is removed entirely, the adult flies will continue to find it and lay more eggs.While the biting midges also have larvae that have no prolegs and which also have attachment disks, the larvae of the netwinged midges can be distinguished from those of the moth fly by the multiple deep lateral constrictions of the latter.The pupal stage lasts only for between 20 and 40 hours. During this stage, the insect will not feed but will remain submerged near the water surface, still breathing through a spiracle and soon metamorphosing into an adult fly which will burst through a seam in the pupal casing and emerge onto the water's surface.The adults are only half the length of the larvae, but are much broader in appearance, with a pair of hairy wings held pitched-roof-like over the body. The wings have the most elementary venation of any of the Diptera, having little more than a series of parallel veins without crossveins. The adults are typically nocturnal, though they orient themselves around lights and may appear to be attracted to light. They are not known to carry any human diseases, and are not parasitic on any other animal.The adults live for about 20 days, during which they will breed only once, often within hours of emerging from their pupal casings. Females will lay their eggs (between 30 and 100) just above the water line inside moist drains. Within 48 hours these eggs hatch into drain worms (Source Wikipedia)