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Orestes (insect)
The genus ''Orestes'' combines relatively small and elongated Phasmatodea species from Southeast and East Asia. Characteristics The representatives of this genus are rather small with in the males and in females. Both sexes are always wingless and colored in different shades of beige to brown and often show high-contrast drawings with white areas, especially in younger females and female nymphs. Males are more of a single color in different shades of brown. The thorax is cylindrical or approximately cylindrical, unlike that of representatives of the genus ''Pylaemenes'', whose meso- and metanotum is flattened or slightly roof-shaped, with a clearly raised central and two lateral longitudinal keels. The mesonotum of the ''Orestes'' females is slightly widened to the rear and there are often two lateral longitudinal rows of tubercles. The legs and especially the femura of the forelegs often have clear edges. The abdomen of adult, egg-laying females is clearly enlarged towards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestes Mouhotii
''Orestes mouhotii'' is an insect species belonging to the order of Phasmatodea. Because of its synyonym ''Orestes verruculatus'', it is the type species of the genus '' Orestes''. Because of its compact body shape, the species is sometimes referred to as small cigar stick insect. Characteristics The females are long and thus longer than the maximal long males. Both sexes have noticeably short legs and have beige to brown patterns. The males wear semicircular horns (auricles) on their head. While they are overall thinner and are characterized by a slightly thickened end of abdomen, the more compact females have a typical thickening immediately behind the middle of the abdomen, which is especially recognizable as the height increases. Freshly adult females are very vividly drawn light and dark brown and often have light, almost white areas, especially on the sides and in the middle of the abdomen. Over the middle of the body there is usually a particularly distinct dark brown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Segmentation (biology)
Segmentation in biology is the division of some animal and plant body plans into a series of repetitive segments. This article focuses on the segmentation of animal body plans, specifically using the examples of the taxa Arthropoda, Chordata, and Annelida. These three groups form segments by using a "growth zone" to direct and define the segments. While all three have a generally segmented body plan and use a growth zone, they use different mechanisms for generating this patterning. Even within these groups, different organisms have different mechanisms for segmenting the body. Segmentation of the body plan is important for allowing free movement and development of certain body parts. It also allows for regeneration in specific individuals. Definition Segmentation is a difficult process to satisfactorily define. Many taxa (for example the molluscs) have some form of serial repetition in their units but are not conventionally thought of as segmented. Segmented animals are tho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sumatra
Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent islands such as the Simeulue, Nias, Mentawai, Enggano, Riau Islands, Bangka Belitung and Krakatoa archipelago. Sumatra is an elongated landmass spanning a diagonal northwest–southeast axis. The Indian Ocean borders the northwest, west, and southwest coasts of Sumatra, with the island chain of Simeulue, Nias, Mentawai, and Enggano off the western coast. In the northeast, the narrow Strait of Malacca separates the island from the Malay Peninsula, which is an extension of the Eurasian continent. In the southeast, the narrow Sunda Strait, containing the Krakatoa Archipelago, separates Sumatra from Java. The northern tip of Sumatra is near the Andaman Islands, while off the southeastern coast lie the islands of Bangka and Belitung, Karim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andamans
The Andaman Islands () are an archipelago in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between the Bay of Bengal to the west and the Andaman Sea to the east. Most of the islands are part of the Andaman and Nicobar Islands, a Union Territory of India, while the Coco Islands and Preparis Island are part of the Yangon Region of Myanmar. The Andaman Islands are home to the Andamanese, a group of indigenous people that includes a number of tribes, including the Jarawa and Sentinelese. While some of the islands can be visited with permits, entry to others, including North Sentinel Island, is banned by law. The Sentinelese are generally hostile to visitors and have had little contact with any other people. The government protects their right to privacy. History Etymology In the 13th century, the name of Andaman appears in Late Middle Chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tergite
A ''tergum'' (Latin for "the back"; plural ''terga'', associated adjective tergal) is the dorsal ('upper') portion of an arthropod segment other than the head. The anterior edge is called the 'base' and posterior edge is called the 'apex' or 'margin'. A given tergum may be divided into hardened plates or sclerites commonly referred to as tergites. In a thoracic segment, for example, the tergum may be divided into an anterior notum and a posterior scutellum. Lateral extensions of a tergite are known as paranota (Greek for "alongside the back") or ''carinae'' (Latin for "keel"), exemplified by the flat-backed millipedes of the order Polydesmida. Kinorhynchs have tergal and sternal plates too, though seemingly not homologous with those of arthropods. Tergo-tergal is a stridulatory mechanism in which fine spines of the abdominal tergites are rubbed together to produce sound. This process is known as abdominal telescoping. Examples File:Andrena spiraeana abdomen.jpg , Abdominal t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitus (biology)
Habit, equivalent to habitus in some applications in biology, refers variously to aspects of behaviour or structure, as follows: *In zoology (particularly in ethology), habit usually refers to aspects of more or less predictable ''behaviour'', instinctive or otherwise, though it also has broader application. Habitus refers to the characteristic form or morphology of a species. *In botany, habit is the characteristic form in which a given species of plant grows (see Glossary of plant morphology#Plant habit, plant habit).Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928 Behavior In zoology, ''habit'' (not to be confused with ''habitus'' as described below) usually refers to a specific behavior pattern, either adopted, Learning, learned, pathological, Intrinsic and extrinsic properties, innate, or directly related to physiology. For example: * ...the [cat] was in the ''habit'' of springi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestes Diabolicus
''Orestes diabolicus'' is a species of stick insects native in Vietnam. The species is so far only known from a three males. Characteristics The species is only known from males, which are unusually prickly for the genus '' Orestes''. These are and have a solid red-brown color. In addition to the long spines, the relatively long legs are also noticeable, through which ''Orestes diabolicus'' can be easily distinguished from the closely related '' Orestes botot''. When compared superficially, the males resemble those of the genus '' Epidares'' rather than those of ''Orestes''. The pronotum has a pair of short, but clearly developed spines on the rear edge. According to the acanthotaxy by Philip Edward Bragg in 1998 and 2001, these are the posterior pronatals. In front of it there are four tubercles. On the mesonotum is a pair of long, pointed anterior mesonotals and after about a third a pair of even longer posterior mesonotals at the rear edge. The supra coxals in between on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesothorax
The mesothorax is the middle of the three segments of the thorax of hexapods, and bears the second pair of legs. Its principal sclerites (exoskeletal plates) are the mesonotum (dorsal), the mesosternum (ventral), and the mesopleuron (lateral) on each side. The mesothorax is the segment that bears the forewings in all winged insects, though sometimes these may be reduced or modified, as in beetles (Coleoptera) or Dermaptera, in which they are sclerotized to form the elytra ("wing covers"), and the Strepsiptera, in which they are reduced to form halteres that attach to the mesonotum. All adult insects possess legs on the mesothorax. In some groups of insects, the mesonotum is hypertrophied, such as in Diptera, Hymenoptera, and Lepidoptera), in which the anterior portion of the mesonotum (called the mesoscutum, or simply "scutum") forms most of the dorsal surface of the thorax. In these orders, there is also typically a small sclerite attached to the mesonotum that covers the wing ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestes Botot
''Orestes botot'' is a species of stick insects native in Vietnam. Characteristics The species is characterized by various long spines on the head of the males and distinct spines over the hind legs on the pleura of the metathorax, which are long and pointed in the males and broad in the females and are pointed. Within the genus, only the males of ''Orestes diabolicus'' have more and longer spines. Males of ''Orestes botot'' reach a length of and are dark brown in color. The longitudinal edges of the meso- and metanotum are yellowish. On the pronotum there are two to four tubercles. The mesonotum has a pair of short, but clearly developed spines on the rear edge, which are the posterior mesonotals according the acanthotaxy of Philip Edward Bragg in 1998 respectively 2001. The pleura of the metathorax are extended over the coxae. The longest and most noticeable spines are the supra coxals on the metapleura. They are oriented horizontally and pointed slightly backwards. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metathorax
The metathorax is the posterior of the three segments in the thorax of an insect, and bears the third pair of legs. Its principal sclerites ( exoskeletal plates) are the metanotum (dorsal), the metasternum (ventral), and the metapleuron (lateral) on each side. The metathorax is the segment that bears the hindwings in most winged insects, though sometimes these may be reduced or modified, as in the flies (Diptera), in which they are reduced to form halteres, or flightless, as in beetles (Coleoptera), in which they may be completely absent even though forewings are still present. All adult insects possess legs on the metathorax. In most groups of insects, the metanotum is reduced relative to the mesonotum. In the suborder Apocrita of the Hymenoptera, the first abdominal segment is fused to the metathorax, and is then called the propodeum. See also *Glossary of entomology terms *Insect morphology *Mesothorax *Prothorax *Thorax (insect anatomy) The thorax is the midsection ( tagma) of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestes Draegeri
''Orestes draegeri'' is a species of stick insects in the subfamily Dataminae and tribe Datamini. Characteristics ''Orestes draegeri'' is a very slender and elongated species with relatively short legs. It is very similar to ''Orestes mouhotii'', from which it differs in its relatively shorter legs. Males are approximately long. In front of and behind the eyes there are mostly pairs of more or less distinct structures that are species-specific (see also acanthotaxy of Heteropterygidae). The three pairs of occipital spines are designed as follows: The anterior supra-antennals are recognizable spinose and slightly pointed outwards. The pairs of anterior and posterior supra-occipitals behind it are smaller. The vertex is significantly enlarged, blunt and laterally compressed with the anterior coronals, which creates conspicuous, ear-like horns (auricles). The paired supra-orbitals behind the eyes are recognizable bluntly spinous. Posterior and lateral coronals are recognizab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orestes Bachmaensis
''Orestes bachmaensis'' is a Phasmatodea species native to central Vietnam. Characteristics Males are around long and, typical of the genus, medium to dark brown in color. They have an indistinct hump on the back of themiddle and hind Arthropod leg#Femur, femura. The tergites of the Abdomen (insect anatomy), abdomen are approximately the same length. The fourth and fifth tergites are slightly raised towards the rear. The species-specific spines located in front of and behind the eyes on the head are pronounced as follows (see also Heteropterygidae#Acanthotaxy, Acanthotaxy of Heteropterygidae). The supra antennals are clearly present as spines and are directed slightly outwards. They are followed by the smaller two pairs of the anterior and posterior supra occipital. The vertex is raised. The supra orbitals behind the eyes are located at the base of the ridge and are blunt. The anterior and posterior coronals behind it, as well as the unpaired central coronal are raised and con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
