Mosquito Wing Veins

The wings of butterflies and moths are covered with scales and mosquitoes possess scales along wing veins. In mosquito studies Culicidae the wing is widely used for morphometric comparisons because of its two-dimensional shape and because it contains veins that encompass natural anatomical landmarks that are ideal for marking the LMs Fig.

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Supporting veins and thin deformable membranes.

Mosquito wing veins. The slender elongated body of the adult is covered with scales as are the veins of the wings. The apical tip and posterior margins of the wings are bordered with long narrow setae called collectively the wing fringe. The wings of mosquitoes are long and slender and the wing veins are covered with scales.

In one genus the second or subcostal wing vein has a row of bristles near its base on the ventral side. They possess sensory organs in their antennae to recognise host and oviposition sites and the Johnstons organ in the basic segment by which males recognise wing beats of the females. Irregular network of veins found in primitive insects.

The major dorsal portion of the thorax is the. The males and sometimes the females feed on nectar and other plant. The terminology currently in use for the veins is adopted from Colless McAlpine 1970.

Twelve species of mosquitoes from the three most epidemiologically important genera Ae. Whenever a vein forks there is always an interpolated vein of the opposite position between the two branches. Wings do not contain muscle.

Note that the veins and morg of the wings are covered by scales which sometimes form characteristic patterns. Membrane is two layers of integument. The membranous portions of the wing between the veins are called cells and are named after the vein that they follow for example radial cell costal cell.

Tegmina singular Tegmen is the thickened fore wings of some insects. Aedes albopictus Stegomyia albopicta from the mosquito Culicidae family also known as Asian tiger mosquito or forest mosquito is a mosquito native to the tropical and subtropical areas of Southeast Asia. It is characterized by the white bands on its legs.

Study the venation and nomenclature of the mosquito wing in the material given. Most of the common and important mosquitoes as transmitters of pathogens for animal and man belong to four genera. Many models of insect wing aerodynamics fail to include not only wing flexibility but also overlook the existence of fluid within the wing veins modeling veins as hollow air-filled tubes Hou et al.

The longitudinal and cross-veins have specific names. In this study we ignored the existence of cross veins and simply numbered veins from 1 to 10. Some insect wings are iridescent under different angles of light with varying cuticle layer.

The wings consist of upper and lower epidermal layers not fused along certain strengthening tubes the wing veins. The principal longitudinal veins of mosquitoes from anterior to posterior are the costa subcosta radius media cubitus and anal vein. Anopheles Culex Mansonia and Aedes.

Discriminative information that allows flying insects classification may be contained in wing shape Rohlf and Archie 1984 but in most cases it is contained in the relative positions of vein. The terminology currently in use for the veins is adopted from Colless McAlpine 1970. The complete system of wing veins is called the venation.

Overall membrane thickness in insect wings ranges from less than 05 microns small thin wings to over 1mm thick protective forewings of beetles even varying widely within an individual wing. Beginning from the anterior margin of the mosquito wing Fig. Study the venation and nomenclature of the mosquito wing in the material given.

Mosquitoes are also characterized by long fragile-looking legs and elongated piercing mouthparts. 58 the first unbranched vein is the costa C which passes around the apex of the wing and forms its. Note that the veins and morg of the wings are covered by scales which sometimes form characteristic patterns.

The tegmina are used to protect the more vulnerable hind wings. Structure of wings Cross section through the wing. The veins of insect wings are characterized by a convex-concave placement such as those seen in mayflies ie concave is down and convex is up which alternate regularly and by its triadic type of branching.

The tegmina offer little or no power during flight and are often held out of the way of the hind wings. In the past few decades however this species has spread to many countries through the transport of goods and international travel. The longitudinal and cross-veins have specific names.

Diagrammatic representation of the wing of a mosquito based on Carpenter and LaCasse 1955. Longitudinal veins with limited cross-veins common in many pterygote groups. The wings of mosquitoes are long and slender and the wing veins are covered with scales.

The principal longitudinal veins of mosquitoes from anterior to posterior are the costa subcosta radius media cubitus and anal vein. Veins including nerve blood space and tracheae. The feathery antennae of the male are generally bushier than those of the female.

Consider the mosquito where pumping organs pulse at frequencies of 3 Hz and flapping frequencies can range between. In one genus the second or subcostal wing vein has a row of bristles near its base on the ventral. Quinquefasciatus were collected from different sampling locations Table 1 as previously described by Medeiros-Sousa et al.

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