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44 results for “Geadephaga”
Figure 8 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 8 - Cychrus tuberculatus (Harris). This species belongs to a genus that contains numerous species in the Palaearctic Region but only two in North America, both west coastal elements. The two species are morphologically very similar and likely sister-species, suggesting that a single ancestral stock crossed Beringia. Stomis and Trechoblemus are other carabid genera well represented in the Palaearctic with a single species each on the West Coast of North America.
Figure 9 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 9 - Calosoma sycophanta (Linnaeus). This species is one of only two intentionally introduced carabids in North America that became established on this continent, the other one being Carabus auratus. These species were introduced for the biological control of the gypsy moth, Lymantria dispar, and the browntail moth, Euproctis chrysorrhoea. Since its release in the vicinity of Boston in 1906-1907, Calosoma sycophanta has spread to southern Maine and to West Virginia.
Figure 29 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 29 - Lachnocrepis parallela (Say). This species is found in marshes and swamps in temperate eastern North America and is closely related to two species living under similar conditions in eastern Asia. The genus Lachnocrepis is another example of taxa exhibiting disjunct eastern Asia-eastern North America distributional patterns. Most current biogeographers agree that such disjunct patterns result from range restrictions of taxa associated with the mixed mesophytic forest during the mid-Tertiary.
Figure 28 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 28 - Pterostichus punctatissimus Randall. This species is one of the most attractive Pterostichus in North America. The sculpture of the elytra is irregular giving the impression to the naked eye that the striae bear large punctures. For that reason Randall named the species punctatissimus meaning the most punctured. Although not as common as Pterostichus adstrictus, this species is also a characteristic element of boreal forests in the Nearctic Region.
Figure 27 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 27 - Psydrus piceus LeConte. This species is widely distributed west of the Rocky Mountains where it is usually found under the bark of relatively large coniferous trees. It is also found within the boreal regions east of the Rockies but is very rarely collected there. This species belongs to the same tribe as Nomius pygmaeus but unlike that species, the adults do not emit an unpleasant smell.
Figure 26 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 26 - Nomius pygmaeus (Dejean). This species is known under the vernacular name "stinking beetle" because of the strong fetid smell that the adults produce. They are attracted to lights and sometimes find their way into houses. It was reported in the literature that at one occasion an entire village had to be evacuated because of the odor produced by these small beetles. The species was often listed as very common at light in the xix Century but is rare today. The species has an unusual range being found in North America and Europe and there is no evidence that it was transported by man from one continent to the other.
Figure 25 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 25 - Platypatrobus lacustris Darlington. Described in 1938, this species remained a great rarity for more than 20 years. The few specimens known had all been captured at light. Henri Goulet, then a summer student working at the Biosystematics Research Centre in Ottawa (now part of the Eastern Cereal and Oilseed Research Centre), found out that a mite of the genus Protodinychus, members of which occurred commonly in beaver houses, had been found on one of the specimens of Patrobus lacustris. Armed with this information, Goulet visited an abandoned beaver house in Gatineau Park in southwestern Quebec and found more than 50 specimens of Platypatrobus. The habitat requirements of the species were discovered: Platypatrobus lacustris lives in the walls of active or recently deserted beaver houses.
Figure 20 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 20 - Broscus cephalotes (Linnaeus). This relatively large Palaearctic carabid is one of the most recently established species in North America. The first recorded specimen was found in the late 1980s and, considering the species' size, it is doubtful that it would have escaped notice for a long period. On this continent, the species has been found only on bare, fine sand along coastal beaches in Prince Edward Island and Cape Breton in company with amphipods of the genus Gammarus which probably make up part of their diet. The pathway of introduction of this broscine on American soil is uncertain.
Figure 24 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 24 - Mioptachys flavicauda (Say). This small species is a characteristic element of the fauna that lives under the bark of dead deciduous trees. Despite its size, it is easily recognized in the field by its conspicuous yellow apical third of the elytra. Thomas Say, the first entomologist born on this continent worthy of the name, was struck by the coloration and for that reason proposed the name flavicauda, derived from the Latin flavus (yellow) and cauda (tail), for the species.
Figure 18 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 18 - Schizogenius amphibius (Haldeman). This small clivinine belongs to a genus endemic to the Western Hemisphere and is closely related to Halocoryza which is represented, besides North America, along the east and west coast of Africa and on many islands in the eastern parts of the Indian Ocean. The adults usually live along river banks near the water and this ecological preference was hinted at by Samuel Haldeman through the species' epithet.
Figure 23 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 23 - Phrypeus rickseckeri (Hayward). Thomas Casey is well known to North American coleopterists for the numerous species he proposed that are considered invalid today. His extremely rigid species concept allowed almost no morphological variation. He was, however, more successful at the generic level and many of his taxa are still recognized as valid today. One of these is Phrypeus which he proposed for a small, peculiar bembidiine species living along river banks in the coastal region of western North America. Associated with the subtribe Bembidiina for a long time, recent molecular analyses have revealed that the species is not closely related to that group.
Figure 16 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 16 - Pasimachus elongatus LeConte. Because of its large size and robust shape, this species is one of the most conspicuous carabid elements of the grassland regions of North America. It belongs to a genus which is endemic to North and Middle America. Although not firmly established, the sister taxon to Pasimachus could be Mouhotia, a genus of massive and handsome species endemic to southeast Asia.
Figure 13 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 13 - Loricera pilicornis (Fabricius). This is a widely distributed Holarctic species, occurring in Europe as far south as northern Spain and continental Italy, over Asia as far south as Kazakhstan and Sichuan, and in North America as far south as the San Bernardino Mountains in southern California and northern West Virginia. The specific name derives from the Latin pili (hairs) and cornus (horn) in reference to the presence of conspicuous stiff setae on the basal antennomeres of the adults. These setae, oriented in three main directions, act as a trap for the capture of collembolan prey.
Figure 12 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 12 - Cicindela marginata Fabricius. This species is a typical coastal species inhabiting mudflats and salt marshes from New Brunswick to southern Florida and along the Florida Gulf coast; it is also known from the Bahamas and the coast of Cuba. The breeding populations in New Brunswick were discovered only recently. Whether the species had been in the area for some time but went unnoticed, or extended its range in recent years, is the subject of speculation.
Figure 11 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 11 - Omus dejeanii Reiche. The Greater Night-stalking Tiger Beetle is one of the few species-group taxa currently recognized in the genus Omus although over one hundred taxa have been described, particularly by Thomas Casey. Even today, taxonomists do not agree on the number of valid taxa that should be recognized in Omus. The difficulty of defining the species-group taxa is not unusual among old, apterous carabid lineages because they tend to form small, local populations.
Figure 10 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 10 - Carabus nemoralis Müller. This European species was first discovered on this continent in New Brunswick around 1890 and was recovered on the west side of Lake Ontario in 1919 and in southeastern Wisconsin by 1934. Unless the species went undetected for a long period of time, these dates would suggest that the species spread westwards for an average of 38 km per year. This is highly improbable for a wingless species and therefore its spread on this continent was undoubtedly enhanced by human transport unless separate introductions occurred.
Figure 2 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 2 - Number of North American species-group taxa of Geadephaga described and currently valid, by decade.
Figure 17 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 17 - Clivina fossor (Linnaeus). This Clivina is one of the 62 carabid species accidentally introduced and established in North America and one of 18 that have been introduced independently on the Atlantic and Pacific Coasts. Many of the adventive species reached our borders in ballast used by Europeans to improve the stability of their trade ships on their way to America. Ballast consisted of stones, broken slates, mortar, bricks, rubbish, soil, and sand that were usually dumped along the shore at ports of entry and certainly constituted a good environment for the survival of carabids during ocean voyages.
Figure 19 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 19 - Promecognathus crassus LeConte. This species, along with its close relative Promecognathus laevissimus, are western coastal elements that feed on polydesmid millipedes. The adults straddle their prey, moving quickly toward the head to pierce the neck and sever the ventral nerve cord with their long mandibles, thereby preventing the millipedes from using their cyanide defense spray. Promecognathines represent a very old, relic lineage, likely originating from Pangea, represented today only in western North America and the Cape Province in South Africa.
Figure 22 from: Bousquet Y (2012) Catalogue of Geadephaga (Coleoptera: Adephaga) of America, north of Mexico. ZooKeys 245: 1-1722. https://doi.org/10.3897/zookeys.245.3416
Figure 22 - Asaphidion curtum curtum (Heyden). This adventive bembidiine was reported in the North American literature under the name Asaphidion flavipes (Linnaeus) until a study of the male genitalia showed that the specimens were in fact conspecific with the morphologically similar Asaphidion curtum. Asaphidion species are odd-looking bembidiines and Linnaeus originally associated them with tiger beetles probably because of their large eyes and absence of elytral striae.
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