The Odonata fauna of Papua New Guinea is species-rich, but human population growth and resulting modification of primary rainforests may lead to a loss of valuable habitat and species diversity. In this study, I compared the odonate assemblages of a natural tropical rainforest and a modified forest in order to assess the loss that could…
I sampled odonates in pristine lower montane rainforest in Papua New Guinea over several months, recording habitat characteristics for all encounters with adult odonates. Using ordination techniques such as cluster analysis and canonical correspondence analysis I then classified the odonate fauna into assemblages correlated with environmental factors. Within the 2.5 km2 study area I found…
The morphology of the hitherto unknown female of Somatochlora borisi is described and illustrated basing upon eight adults from Bulgaria, Greece and Turkey. A key is provided which allows the determination of the females of all West Palaearctic Cordulia and Somatochlora spp. A list of the presently known localities and a distribution map show the…
The state of knowledge of China’s Odonata is very much incomplete with many species awaiting description, especially from tropical and subtropical areas. A brief account is given of new odonate species described from China, including Taiwan, between 2000 and 2003. Information on identification guides, faunal lists and current studies, is provided. Species of Odonata, categorised…
Madagascar has approximately 175 species of Odonata. Of the Anisoptera ca 60% is endemic and of the Zygoptera almost 95%. The endemic species can roughly be separated into ‘new endemics’ that are probably recent arrivals from the African mainland and ‘old endemics’. The latter group includes many members of the families Megapodagrionidae, Platycnemididae and Corduliidae,…
Of the approximately 439 species of Odonata known from North America, north of Mexico, comments on 25 species (6%) of conservation concern are given. Species deemed to be under the most threat are Ischnura gemina, Gomphus sandrius, Ophiogompbus australis, Stylurus potulentus, and Libellula jesseana. Two other species not under threat, Neurocordulia micbaeli and Somatochlora brevicincta,…
Previously, the genus Stylogomphus in North America was believed to contain only a single species, S. albistylus. We present evidence for recognizing a second species, S. sigmastylus sp. nov.: holotype ♂, allotype ♀: Big Swan Creek, near Gordonsburg Church of Christ, Lewis County, Tennessee, 11 June 1990, C. Cook leg., deposited in the Florida State…
Aeshna (Hesperaeschna) condor sp. nov. is described and illustrated from four males and six exuviae. The adult color pattern does not resemble that of any other Venezuelan species, but structurally the new species comes closest to A. (H.) punctata and A. (H.) joannisi. This latter is here recorded for the first time from Venezuela, and…
Coryphaeschna huaorania sp. n. (holotype ♂ Ecuador, Morona Santiago Prov., pond 5 km N of Mendez jet., 6 Nov 1997; allotype ♀ same data; both to be deposited in FSCA, Gainesville, FL, USA) is described and compared with C. amazonica, C. apeora and C. perrensi. The new species can be recognized by having 3 transverse…
A new genus, Sinocnemis, gen. n., is established to receive two new species of platycnemidid described here as Sinocnemis yangbingi, sp. n., from Emeishan, Sichuan, China and Sinocnemis dumonti, sp. n. from Xishui, Guizhou, China.