Topic
Paragomphus
About: Paragomphus is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 7 citations.
Papers
1 Jan 2006
TL;DR: Odonata larva was sampled from 16 tributaries of Kerian River in the Kerian Basin (KRB) using a kick sampling method from September 1998 until May 1999 encompassing both rainy and dry seasons as discussed by the authors.
Abstract: Odonata Larvae werw sampled from 16 tributaries of Kerian River in the Kerian River Basin (KRB) using a kick sampling method from September 1998 until May 1999 encompassing both rainy and dry season. The distribution of odonate genera was significantly different (F15,16 = 3.99) in the dry season and wet season (F15,16 = 4.70) at p = 0.05 in all rivers but no differences in distribution was detected between the rainy and dry seasons. Platycnemididae and Libllulidae were the two most dominant families together with other families Gomphidae, Coenagrionidae, Macromiidae, Chlorocyphidae, Calopterygidae, Aeshnidae and Eupheidae. Several common spesies, Platycnemis annulata, Brachythemis contaminate, Macromia gerstaeceri, Paragomphus henryii, Orthetrum brunneum, Rhinocypha quadrimaculata and Copera marginipes were identified. The calculated values of biological indices (H’, D, E, R1 and R2) showed that the dragonfly fauna in this river basin was slightly poor. Varied physico-chemical parameters of the river possibly as a result of human activities in surrounding areas were found to influence the distribution of the dragonfly larvae in the KRB. There were strong correlation between generic diversity and dissolved oxygen (r = 0.685), ferrum (r = 0.592) and pH (r = 0.583) in the rainy season. The current velocity (r = 0.37), light penetration (r = 0.36) and deph (r = 0.34) of rivers influenced the diversity the dry
7 citations
TL;DR: A new species of Crenigomphus is described and illustrated from a type series of eight males and eight females collected along the Okavango River in Namibia during December 2004, three non-type adult specimens and several exuviae.
Abstract: A new species of Crenigomphus is described and illustrated from a type series of eight males and eight females, all collected along the Okavango River in Namibia during December 2004, three non-type adult specimens and several exuviae (holotype ♂ Namibia, N'Kwazi Lodge, 19 xii 2004, deposited at NMNW). Both sexes lack foliations at S8-9 as occur in some Crenigomphus, but the male is peculiar in having exceptionally long cerci. The latter character is normally present in the genus Paragomphus. Other characters typical of Crenigomphus include all wings having a bright yellow costal border, S10 longer than S9 in males, colouration mostly ochreous with few darker markings, and the strong blackish serration at the posterior end of the cerci. The larval characters based on exuviae, one associated with an emerged male, do not allow clear separation from Paragomphus.
3 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2010 | 1 |
| 2006 | 1 |