keyword
MENU ▼
Read by QxMD icon Read
search

Odonata

keyword
https://www.readbyqxmd.com/read/28610344/a-new-species-of-the-genus-burmagomphus-williamson-odonata-gomphidae-from-northern-thailand
#1
Noppadon Makbun
Burmagomphus chiangmaiensis sp. nov. (holotype: Ban Luang, Chom Thong, Chiang Mai province, Thailand, 890-900 m, 14 v 2012) is described and illustrated. It can be differentiated from its most similar congener, B. apricus from China, by shape of posterior hamulus, yellow trapezoid band on occiput, and larger size.
May 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610295/first-record-of-hawker-dragonflies-from-eocene-baltic-amber-odonata-anisoptera-gomphaeschnidae
#2
Stefan Pinkert, Günter Bechly, André Nel
Based on three specimens, the first record of hawker dragonflies from Baltic amber is described in a new genus with two new species: Elektrogomphaeschna peterthieli gen. et sp. nov. and E. annekeae sp. nov.. They belong to the family Gomphaeschnidae and are tentatively attributed to the extinct subfamily Gomphaeschnaoidinae. The latter was previously only known from Cretaceous fossils and is here shown to have survived the K-Pg mass extinction event. This discovery also confirms the still higher diversity of Gomphaeschnidae during the Paleogene compared to the Neogene that was dominated by the more derived Aeshnidae sensu stricto...
May 29, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610294/notes-on-the-genus-navicordulia-machado-costa-1995-odonata-anisoptera-corduliidae-s-str-description-of-a-new-species-phylogenetic-affinities-and-aspects-of-biogeography
#3
Günther Fleck
Based on a single male specimen, a remarkable new species of the genus Navicordulia is described from the Massif du Mitaraka in French Guiana (Tumuc-Humac Mountains). Another new species of this genus is also reported from the same locality but is not described. This is the first record of the genus from French Guiana, hitherto being unknown within a radius of more than 1000 km. Apparent rarity or absence of records is probably due to its secretive habits. Navicordulia tumucurakensis sp. nov. presents unique characters not present in other species of the genus including: almost no excavation of the anal angle, proximal sternal pilose ridge of abdominal segment 7 transformed into two large lateral oreillets disconnected from the median carina, additional distal sternal pilose ridge transformed into a medial knob, epiproct not extending beyond the distal half of the cerci, very long cerci surpassing those of described species, cerci lacking ventro-medial carina and tubercle and exhibiting a distal ventral brush of hair-like setae...
May 29, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610284/a-new-species-of-i-gynacantha-i-rambur-1842-from-cat-tien-national-park-vietnam-odonata-aeshnidae
#4
Tom Kompier, James Holden
Gynacantha cattienensis spec. nov. is described from Cat Tien National Park, Dong Nai Province, Vietnam, on the basis of male and female specimens. This species is close in structure to G. khasiaca McLachlan, 1896, and differs in details of cerci, auricles and thorax coloration. Historical records of G. khasiaca from Vietnam may refer to this new species. Some information on its biology is provided.
May 30, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610178/a-new-stem-coenagrionoid-genus-of-damselflies-odonata-zygoptera-from-mid-cretaceous-burmese-amber
#5
Claudia Möstel, Martin Schorr, Günter Bechly
A new genus and species of damselfly, Burmagrion marjanmatoki, gen. et sp. nov., is described from Early Cretaceous Burmese amber. It is attributed to the basal stem group of Coenagrionoidea. The inclusion of five wings from the same species suggests that the amber piece contains the remains of a mating pair of damselflies.
March 13, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610176/two-new-dragonflies-odonata-anisoptera-from-the-miocene-of-carinthia-austria
#6
Mario Schädel, Thomas S Lechner
Two new species of fossil dragonflies from the Middle Miocene fossil site Schaßbach (Carinthia, Austria) are described. The presence of Gomphaeschna carinthiae sp. nov. and Ictinogomphus hassleri sp. nov. in the fossil record of Central Europe confirms the scenario of a more widespread distribution of the represented genera in the Miocene in contrast to their Recent distribution.
March 13, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610162/revalidation-of-i-platystigma-i-kennedy-1920-with-a-synopsis-of-the-i-quadratum-i-species-group-and-the-description-of-three-new-species-odonata-pseudostigmatidae
#7
Angelo B M Machado, Déborah S Soldati Lacerda
The genus Platystigma Kennedy, 1920 is revalidated based mainly on the third segment of the penis that is plate-like, whereas in the other Pseudostigmatidae it is a flagellum. Dijkstra et al (2014) have merged this family into the Coenagrionidae. However, we prefer to maintain the long-used name Pseudostigmatidae until more detailed phylogenetic studies with more sampling are done. Eight species are here considered in the genus, three of which are described as new: P. humaita, P. minimum and P. quadratum. The genus is divided in two species group, jocaste and quadratum, the latter studied here...
March 13, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610131/-i-indolestes-i-i-lafaeci-i-sp-nov-odonata-lestidae-from-timor-with-comparisons-to-related-species
#8
Malte Seehausen
Indolestes lafaeci sp. nov. is described and illustrated (holotype male: vi.1929, Soe, South Central Timor Regency, West Timor, Indonesia, ex.-Coll. Le Moult; deposited at the Institut Royal des Sciences Naturelles de Belgique, Brussels, Belgium). Indolestes insularis comb. nov. is proposed. For comparison, illustrations of the head, synthorax, male anal appendages and genital ligula as well as of the ovipositor of I. bellax, I. gracilis and I. insularis are given.
March 17, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610105/the-final-stadium-larva-of-i-euphaea-i-i-decorata-i-hagen-in-selys-1853-from-fujian-china-odonata-zygoptera-euphaeidae
#9
Qi-Han Xu
The final stadium larva of Euphaea decorata Hagen in Selys is described and illustrated for the first time. The larva of E. decorata is typical of the genus and characterized by having a flat and long body with large saccoid caudal gills, seven pairs of lateral abdominal gills, two or three large and sharp spines in front of the ventral margin of the eyes, and tridentate palpal lobes of the prementum. The supposed larva of Rhipidolestes nectans is corrected to that of an unknown Euphaeidae. Known Euphaea larvae are shown to be generally very similar, but an old report suggests that the Indian species E...
March 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610104/honouring-his-royal-highness-the-crown-prince-of-bhutan-i-megalestes-i-i-gyalsey-i-odonata-synlestidae
#10
T Gyeltshen, V J Kalkman, A G Orr
Megalestes gyalsey spec. nov. is described from a single male from Trongsa District in Bhutan. The species was discovered during field work conducted in 2015 for the Bhutan invertebrate biodiversity project. The species is named in honour of His Royal Highness Crown Prince Jigme Namgyel Wangchuck, the Gyalsey of Bhutan, on the occasion of his first birthday.
March 22, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610059/-i-coeliccia-i-i-mientrung-i-spec-nov-from-central-vietnam-odonata-platycnemididae
#11
Tom Kompier, Quoc Toan Phan
Coeliccia mientrung spec. nov. is described from central Vietnam. Detailed differences from the very similar C. pyriformis Laidlaw, 1932, are provided. The female of C. pyriformis is described for the first time.
March 27, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610020/-i-nososticta-i-i-impercepta-i-sp-nov-odonata-platycnemididae-from-timor-%C3%A2-with-a-key-to-the-sundaic-species
#12
Malte Seehausen, Günther Theischinger
Nososticta impercepta sp. nov. is described and illustrated (holotype ♂: 28.vi.1911, Niki-Niki [South Central Timor Regency], Timor, Indonesia, C.B. Haniel leg., Coll. Ris, No. 2477; deposited at the Forschungsinstitut und Naturmuseum Senckenberg, Frankfurt am Main, Germany). An illustrated key for the species of Nososticta known from the Lesser Sunda Islands is given. The occurrence of N. selysi in Timor is considered to be doubtful. Nososticta emphyla is newly recorded from Sumbawa Island.
April 5, 2017: Zootaxa
https://www.readbyqxmd.com/read/28610008/the-riddle-of-i-lyriothemis-i-i-bivittata-i-rambur-1842-i-lyriothemis-i-i-kameliyae-i-spec-nov-odonata-libellulidae
#13
Tom Kompier
Lyriothemis kameliyae spec. nov. from northern Vietnam is described and illustrated for both sexes, and descriptions are given of male and female specimens of L. bivittata collected in Vietnam. A comparison of their distinguishing characteristics is provided, and differences from similar L. tricolor are discussed. Earlier descriptions and some records of L. bivittata are evaluated. Evidently these contain at least some L. kameliyae specimens, and therefore historic records of L. bivittata require evaluation...
April 6, 2017: Zootaxa
https://www.readbyqxmd.com/read/28609945/-i-gynacantha-i-i-dryadula-i-sp-nov-from-the-guiana-shield-odonata-anisoptera-aeshnidae
#14
Ulisses Gaspar Neiss, Jürg DE Marmels
The new species is described and illustrated on the basis of two reared, subteneral males from Brazil, their larval exuviae, a mature male from French Guiana, a mature female from Venezuela, and a mature female from Surinam. One of the Brazilian males is the holotype (BRAZIL, Amazonas State, Manaus, Reserva Florestal Ducke, BR 174-km 26, trail to Acará creek, 02º55'47"S, 59º58'22"W, 0.7 m elevation, deposited in INPA). The new species (total length 50-54 mm) differs from other small species of same genus by color pattern of thorax, middle and hind tibiae dark with external (dorsal) yellow streak, male cercus with truncated tip lacking apical spine, and male epiproct reaching or slightly surpassing midlength of cercus...
April 20, 2017: Zootaxa
https://www.readbyqxmd.com/read/28601515/repeated-pulse-exposures-to-lambda-cyhalothrin-affect-the-behavior-physiology-and-survival-of-the-damselfly-larvae-ischnura-graellsii-insecta-odonata
#15
Simone Finotello, Alexander Feckler, Mirco Bundschuh, Frank Johansson
Damselflies form an essential part of the aquatic and terrestrial food web. Pesticides may, however, negatively affect their behavior, physiology, and survival. To assess this, a 42-day-lasting bioassay was conducted, during which damselfly larvae (Ischnura graellsii; n = 20) were repeatedly exposed to lambda-cyhalothrin (3 days at; 0, 10, 50, 250, 1250, and 6250ng LCH L(-1)), followed by recovery phases (4 days) in pesticide-free medium for six weeks. This exposure design was used to simulate frequent runoff events in the field...
June 8, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28552975/long-term-genetic-monitoring-of-a-riverine-dragonfly-orthetrum-coerulescens-odonata-libellulidae-direct-anthropogenic-impact-versus-climate-change-effects
#16
Rebecca Herzog, Heike Hadrys
Modern conservationists call for long term genetic monitoring datasets to evaluate and understand the impact of human activities on natural ecosystems and species on a global but also local scale. However, long-term monitoring datasets are still rare but in high demand to correctly identify, evaluate and respond to environmental changes. In the presented study, a population of the riverine dragonfly, Orthetrum coerulescens (Odonata: Libellulidae), was monitored over a time period from 1989 to 2013. Study site was an artificial irrigation ditch in one of the last European stone steppes and "nature heritage", the Crau in Southern France...
2017: PloS One
https://www.readbyqxmd.com/read/28491118/the-head-morphology-of-pyrrhosoma-nymphula-larvae-odonata-zygoptera-focusing-on-functional-aspects-of-the-mouthparts
#17
Sebastian Büsse, Thomas Hörnschemeyer, Stanislav N Gorb
BACKGROUND: The understanding of concerted movements and its underlying biomechanics is often complex and elusive. Functional principles and hypothetical functions of these complex movements can provide a solid basis for biomechanical experiments and modelling. Here a description of the cephalic anatomy of Pyrrhosoma nymphula (Zygoptera, Coenagrionidae) focusing on functional aspects of the mouthparts using micro computed tomography (μCT) is presented. RESULTS: We compared six different instars of the damselfly P...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28480018/elements-of-metacommunity-structure-in-amazonian-zygoptera-among-streams-under-different-spatial-scales-and-environmental-conditions
#18
Leandro Schlemmer Brasil, Thiago Bernardi Vieira, José Max Barbosa de Oliveira-Junior, Karina Dias-Silva, Leandro Juen
An important aspect of conservation is to understand the founding elements and characteristics of metacommunities in natural environments, and the consequences of anthropogenic disturbance on these patterns. In natural Amazonian environments, the interfluves of the major rivers play an important role in the formation of areas of endemism through the historical isolation of species and the speciation process. We evaluated elements of metacommunity structure for Zygoptera (Insecta: Odonata) sampled in 93 Amazonian streams distributed in two distinct biogeographic regions (areas of endemism)...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28303462/congruence-and-the-biomonitoring-of-aquatic-ecosystems-are-odonate-larvae-or-adults-the-most-effective-for-the-evaluation-of-impacts
#19
T P Mendes, J M B Oliveira-Junior, H S R Cabette, J D Batista, L Juen
Odonata have been widely used as indicators for the biomonitoring of terrestrial and aquatic habitats due to their sensitivity to environmental impacts. We aimed to determine whether the larval or adult phases of these insects were the best predictors of variation in habitat parameters and the loss of environmental integrity. Specimens were collected during three seasons (dry, rainy, and ebb) from 12 points in the Suiá-missu River basin, at the headwaters of the Xingu River in Mato Grosso, Brazil. The Protest analysis indicated a high degree of congruence between the assemblages of larvae and adults in streams with varying degrees of habitat integrity (R = 0...
March 16, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28303186/incidence-of-wolbachia-in-aquatic-insects
#20
Eric J Sazama, Michael J Bosch, Carmelita S Shouldis, Scot P Ouellette, Jeff S Wesner
Wolbachia is a genus of intracellular bacteria typically found within the reproductive systems of insects that manipulates those systems of their hosts. While current estimates of Wolbachia incidence suggest that it infects approximately half of all arthropod species, these estimates are based almost entirely on terrestrial insects. No systematic survey of Wolbachia in aquatic insects has been performed. To estimate Wolbachia incidence among aquatic insect species, we combined field-collected samples from the Missouri River (251 samples from 58 species) with a global database from previously published surveys...
February 2017: Ecology and Evolution
keyword
keyword
105058
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"