Tachinidae (parasitic flies; order Diptera, suborder Cyclorrapha) Large family of true flies whose larvae are parasites of insects and other arthropods. The adults are distinguished by a strong fan of hypopleural bristles, and a well-developed postscutellum. The second abdominal sternite is visible as side plates lying above the tergite. The larvae are unlike other cyclorraphan larvae in being uniformly cylindrical, rather than tapered. There are many larval habits and methods for attacking hosts: (a) eggs are laid on the surface of the host; (b) eggs are laid in large numbers on potential food plants for the host, and are eaten; (c) eggs are laid near the habitat of the host, and hatch into active larvae which seek out a host; and (d) larviparous females puncture the skin of the host and deposit an egg which hatches immediately. The usual hosts are larval or adult Coleoptera, Orthoptera, and Hemiptera, occasionally Hymenoptera, but most frequently Lepidoptera. The larvae breathe either by maintaining a connection with the air outside the host, or by tapping the air supply of the host at a tracheal trunk. More than 9000 species have been described, and their distribution is world-wide.
More From encyclopedia.com
Parasitism , Parasitism describes a relationship between two species, a parasite and its host, in which the parasite benefits, while the host is harmed. Parasitis… Host , host The host is the consecrated bread of the Eucharist; its Latin root, ‘hostia’, meaning a sacrificial victim, suggests a theological understanding… Tapeworms , The class Cestoda consists of long, flat, ribbonlike worms that are commonly called tapeworms. Tapeworms are obligatory parasites , ones that cannot… Phoresy , phoresy A method of dispersal in which an animal attaches itself to an animal of another species in order to be transported to a new site, where it r… Parasites , A parasite is an organism that lives in or on another organism and benefits from the relationship. Most parasites harm their host organisms in some w… Myxozoans , Myxosporidea (phylum Protozoa, subphylum Cnidospora) A class of protozoa, which parasitize invertebrates and lower vertebrates, particularly fish, of…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like