Sciara is a genus of fungus gnats that feed on decaying organic matter and fungi, and are often found in greenhouses. Their larvae are up to 6 mm long, white, slender and legless, with a black head and smooth semi-transparent skin which reveals the contents of the digestive tract. The adult fly is small, up to 3 mm, has a dark brown body, small head and its legs and wings are comparatively long, looking like a mosquito. The zygote has 3 pairs of autosomes a one or more limited chromosomes and 3 X chromosome (2 fathers’, 1 mother's). There are 2 stages in Sciara 1) GERM LINE i) MALES ii) FEMALES