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The number of segments in an antenna varies amongst insects, with higher flies having 3-6 segments, [21] while adult cockroaches can have over 140. [22] The general shape of the antennae is also quite variable, but the first segment (the one attached to the head) is always called the scape, and the second segment is called the pedicel.
Evaniidae is a family of parasitoid wasps also known as ensign wasps, nightshade wasps, hatchet wasps, or cockroach egg parasitoid wasps. They number around 20 extant genera containing over 400 described species , and are found all over the world except in the polar regions . [ 1 ]
The Turkestan cockroach, Periplaneta lateralis (also known by its synonyms Shelfordella lateralis and Blatta lateralis), [3] also known as the rusty red cockroach, [4] red runner cockroach [5] or simply rusty red, red runner, [5] or lat, is a primarily outdoor-dwelling cockroach native to an area from northern Africa to Central Asia.
The earliest cockroach-like fossils ("blattopterans" or "roachoids") are from the Carboniferous period 320 million years ago. [12] [13] [14] Fossil roachoids are considered the common ancestor of both mantises and modern cockroaches, and are distinguished from the latter by the presence of a long external ovipositor.
The American cockroach shows a characteristic insect morphology with its body bearing divisions as head, trunk, and abdomen. The trunk, or thorax, is divisible into prothorax, mesothorax and metathorax. Each thoracic segment gives rise to a pair of walking appendages (known as cursorial legs). The organism bears two pairs of wings.
Species in this genus are 4 to 9.7 cm (1.6–3.8 in) long and can have a wingspan of up to 20 cm (8 in); the world's largest cockroach by length and wingspan is M. longipennis. [1] [2] [3] Megaloblatta, like many other insects, use stridulation in order to steer their predators away. [4]
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Up to 15 pairs of long legs are attached to the rigid body. Together with the antennae they give the centipede an appearance of being 75 to 100 mm (3 to 4 in) in length. [ 6 ] The delicate legs enable it to reach surprising speeds of up to 0.4 meters per second (1.3 ft/s) running across floors, up walls and along ceilings. [ 7 ]