House Mosquitoes (IMAGE) University of Veterinary Medicine -- Vienna Caption Different forms of the northern house mosquito are morphologically indistinct. Credit Photo: Carina Zittra/Vetmeduni Vienna Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.