Eristalinus megacephalus
Eristalinus megacephalus is a species of hoverfly. Description. "Eristalinus megacephalus" has a black abdomen and golden horizontal stripes larger in males. It has a black thorax, legs with black tips, transparent, flexible wings, a large head and golden compound eyes with pale purple spots. Being about 8–11 mm long, it is a good pollinator, and uses Batesian mimicry to look like hymenopteran bees and scare away predators. Its appearance is also similar to bee flies (family Bombyliidae). The species is listed in 2: 63 of Rossi's publication "Mantissa insectorum". There are no subspecies. It is the rarest  species of the genus "Eristalinus", and is common but not abundant. The species's flight period is from May to October, and is most plentiful from June to July. Distribution. "E. megacephalus" can be found in most countries, including South Africa, Egypt, Sri Lanka, China, Taiwan, India, Java, Guam, Southern Spain, Turkey, North Africa, Iran, and coastal parts of Italy.