What does the order Hymenoptera include?

What does the order Hymenoptera include?

Hymenoptera is one of the largest orders of insects and includes many species of bees, wasps, hornets, sawflies, and ants. The word Hymenoptera is derived from the ancient Greek words for hymen, meaning membrane, and pteron, translated to wing.

What type of legs do Hymenoptera have?

As insects, hymenopterans have three pairs of jointed legs; an abdomen that is divided into 11 segments and lacks any legs or wings; and a body separated into three parts (head, thorax, and abdomen), with one pair of antennae on the head.

Which of the following is a characteristic of the order Hymenoptera?

Common characteristics of the order include: Two pairs of membranous (thin, often see-through) wings. The forewings and hindwings are held together by small hooks and the hindwings are smaller than the forewings and the wing venation (vein arrangement) is often much reduced.

Do all Hymenoptera have wings?

Hymenopterans range in size from very small to large insects, and usually have two pairs of wings. The smaller species may have only two or three hamuli on each side, but the largest wasps may have a considerable number, keeping the wings gripped together especially tightly.

How many legs do Hymenoptera have?

six legs
Their fore and hind wings are hooked together with groups of tiny hooks called hamuli. Like all insects, the species in this order have six legs, segmented bodies, and antennae.

How many families are in Hymenoptera?

The Hymenoptera is divided into two suborders: Symphyta (sawflies and horntails) have a broad junction between thorax and abdomen….Classification & Distribution.

Are all Hymenoptera Haplodiploid?

In haplodiploid taxa, females are heterozygous at the CSD locus while males are hemi/homozygous. Haplodiploidy occurs in all species of Hymenoptera (bees, ants, wasps and sawflies) and Thysanoptera (‘thrips’), as well as sporadically in some spider mites, Hemiptera, Coleoptera (bark beetles) and rotifers.

Does haplodiploidy explain eusociality?

Hamilton proposed that eusociality arose in social Hymenoptera by kin selection because of their interesting genetic sex determination trait of haplodiploidy. This indicates that the high relatedness between sisters favored the evolution of eusociality during the initial stages on several occasions.

What is haplodiploidy among ants?

Haplodiploidy is a sex-determination system in which males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid. Haplodiploidy determines the sex in all members of the insect orders Hymenoptera (bees, ants, and wasps) and Thysanoptera (‘thrips’).

What order is a ant in?

Hymenopterans
Ants/Order

How many species of Hymenoptera are there?

Written By: Hymenopteran, (order Hymenoptera), any member of the third largest—and perhaps the most beneficial to humans—of all insect orders. More than 115,000 species have been described, including ants, bees, ichneumons, chalcids, sawflies, wasps, and lesser-known types.

Can Hymenoptera be mistaken for flies?

The Hymenoptera are quite a distinctive order and members are unlikely to be confused with other insects. Some of the smaller winged species may appear to only have 1 pair of wings and may be mistaken for flies (Diptera).

What is the function of the wing hooks in Hymenoptera?

The wing hooks of Hymenoptera enable the wings to be coupled together during flight, which gives these insects well controlled, rapid flight. These tiny hooks can be easily seen with the aid of a dissecting microscope.

What are the parts of the hymenopteran ovipositor?

The hymenopteran ovipositor is derived from abdominal appendages and comprises three independently movable parts, called valves, that together form the egg canal. The dorsal valve is a fused structure, but the ventral ones are separate.