Showing posts with label Dragonfly. Show all posts
Showing posts with label Dragonfly. Show all posts

Monday, 21 April 2014

Orthetrum brachiale (Palisot de Beauvois, 1817)

It's been a while, hasn't it?

To break that streak, then:

Photographed in Chongwe, Lusaka, Zambia, in December 2013, using Olympus E-420 DSLR with Zuiko 40-150mm lens and 2 KOOD magnifiers.
This delightfully blue dragonfly seems limited to Sub-Saharan Africa, and a few of the associated islands. It apparently hasn't made it across the Sahara, as the IUCN disregards a handful of records from Egypt; these presumably belong to one of several quite similar species.

As a side-note, dragonfly, in Chewa, is Tombolombo; to translate the English name of 'Strong [Skimmer] Dragonfly', we'd go with Mphamvu Tombolombo (possibly not in that order, and spellings of mphamvu vary considerably, with mpamvu being a closer guide to pronunciation in the derived Chi-Nyanja language spoken around Lusaka).

In the more universal Linnaean binomial, this is:

Orthetrum brachiale
(Palisot de beauvois, 1817)

Which further belongs to:
- Libellulinae    
-  Libellulidae     
- Libelluloidea     
- Anisoptera          
- Epiprocta             
- Odonata                 
- Holodonata              
- Odonatoptera             
- Metapterygota             
See also Eremoides bicristatus, Hagenomyia tristis, Dichtha inflata, Oedemera nobilis, Otiorhynchus atroapterus,Malachius bipustulatus , Phyllobius pomaceus, Cheilomenes lunata, Melolontha melolontha, Neojulodis vittipennis, Demetrias atricapillusAnthia fornasinii, Lophyra cf. differens, Synagris proserpina, Vespula germanica, Astata tropicalis, Anthophora furcata, Andrena nigroaenea, Zebronia phenice, Crambus pascuella, Nemophora degeerella, Sphinx ligustri, Laelia robusta, Acada biseriata, Metisella willemi, Anthocharis cardamines, Papilio demodocus, Panorpa germanica, Chloromyia formosa, Senaspis haemorrhoa, Helophilus pendulus, Episyrphus balteatus, Metadon inermis, Diasemopsis meigeniiDolichotachina caudata, Megistocera filipes, Pephricus, Grypocoris stysiRanatra, Anoplocnemis curvipes, Idolomantis dentifrons, Sibylla pretiosa, Tettigonia viridissima, Stictogryllacris punctata, Enyaliopsis, Humbe tenuicornis, Lobosceliana loboscelis, Cyathosternum prehensile, Heteropternis thoracica and Pseudothericles jallae.
- Megoperculata               
- Pterygota                        
- Dicondylia                          
- Insecta                                
- Hexapoda                              
- Arthropoda                            
- Ecdysozoa                               
- Protostomia                              
See also Burtoa nilotica.
- Nephrozoa                                  
- Bilateralia                                     
- Eumetazoa                                     
- Animalia                                          
- Eukaryota                                         

There are, as previously noted, a fair few similar blue matombolombo around; the most troubling is usually Orthetrum stemmale, which is perhaps most easily distinguished by the colour of the pterostigma (coloured cell on the leading edge of the wing, near the tip); so far as I can tell, O. stemmale has a very dark brown, almost black pterostigma with a thick black border. In O. brachiale, on the other hand, the pterostigma seems to be pale brown with a thin black border. To put today's guest into this discussion, here's a more inclusive shot: 

 It is worth noting that, with the paucity of literature readily accessible on this subject, a pale brown pterostigma should not necessarily be taken as a clear sign that O. brachiale is the species, but it seems to be a helpful hint.


And that's all, folks! 

Friday, 11 October 2013

Lestinogomphus angustus, Martin, 1911

Riddle of the day: What does today's featured creature share with whale sharks and dogfish?

No, it's not a cartilaginous fish. It shares a misleading name, although in this case it's the Latinate generic name, Lestinogomphus, derived from Lestes and Gomphus, the type genera of the Spreadwing Damselflies (Lestidae) and the Clubtail Dragonflies (Gomphidae), respectively. As with dogfish and whale sharks, the second one is the actual affiliation. 

Behold, then, the common fairytail dragonfly:

 
Lestinogomphus angustus, Kafue NP, Central Province, Zambia
Photographed in near Chombe, in the Kafue National Park, in October 2011, Using and Olympus E-420 with Zuiko 40-150mm lens and 1 KOOD magnifier.
It's not a great photograph, and I would have tried for a better one but, having a perfectly rational fear of crocodiles, I was uncomfortable keeping my back to the Kafue for more than a few seconds at a time.  


This delightfully odd dragonfly, which we've already established is the common (or spined) fairytail, is also known as 

Lestinogomphus angustus
Martin, 1911

As with all dragonflies I'm aware of, it is harmless - there is no sting in that tail - but can deliver a painful (but venomless) nip if handled.   

 - Gomphini
- Gomphinae
- Gomphidae  
- Aeshnoidea    
- Anisoptera       
- Epiprocta             
- Odonata                 
- Holodonata                
- Odonatoptera               
- Manopterygota               
- Pterygota                                        
- Dicondylia                                        
- Insecta                                                 
- Hexapoda                                               
- Arthropoda                                               
- Ecdysozoa                                                       
- Protostomia                                                       
- Nephrozoa                                                             
- Bilateralia                                                                         
- Eumetazoa                                                                            
- Animalia                                                                                    
- Eukaryota                                                                                                            

And it might not be much, but that is all, folks! 



As previously mentioned, the best place online to go for african dragonflies is the aptly names Africa Dragonfly, although use with caution, as the moderators may occasionally let though a misidentified image... Warwick Tarboton's page on dragonflies of South Africa also seems good, although I've yet to explore it fully...

Thursday, 29 August 2013

Rhyothemis semihyalina (Desjardins, 1832)

To avoid losing all your limited attention with the pre-amble, I'm going to be starting with the picture henceforth. When I remember.

Rhyothemis semihyalina, Chongwe, Lusaka, Zambia
Photographed in Chongwe, Lusaka, Zambia, in November 2011, using an Olympus E-420 DSLR, with a Zuiko 40-150mm lens and three KOOD magnifiers. It's been shrunk to be uploaded, but is still a BIG image, if you feel like clicking on it to see the facets of a dragonfly's eyes...
This, dear reader, is

Rhyothemis semihyalina
(Desjardins, 1832)

In common with other Rhyothemis, it is a flutterer, and specifically the Phantom Flutterer. Seeing it in flight gives you a good idea of the reasons for its name - as only the bases of its wings are inky black, in flight it appears a much smaller insect, and, as the bases move much more slowly than the wing-tips, looks a weak flier. To assure you that this is not the case, in 2013 I saw an individual of this species hovering over traffic on the main road into Lusaka City, snatching less agile insects from the air after cars had stunned them (I remain uncertain as to whether its agility or resourcefulness impressed me more greatly). 

- Rhyothemistini
- Trameinae           
- Libellulidae            
- Libelluloidea             
- Anisoptera                     
- Epiprocta                            
  - Odonata                                
- Holodonata                               
- Odonatoptera                                
- Manopterygota                                 
- Pterygota                                             
- Dicondylia                                              
- Insecta                                                        
- Hexapoda                                                        
- Arthropoda                                                         
- Ecdysozoa                                                             
- Protostomia                                                              
- Nephrozoa                                                                   
- Bilateralia                                                                       
- Eumetazoa                                                                          
- Animalia                                                                                 
- Eukaryota                                                                                     


 

That's all, folks!


Africa Dragonfly is an excellent photographic resource on the diverse African damsel and dragonflies. It includes user-submitted images of three of the six flutterers in Rhyothemis (external links): R. fenestrina, identifiable by almost entirely black wings with clear windows; R. notata, with all four wings black for just over half their length and this species, R. semihyalina, with the basal third, or thereabouts, of the hindwings inky black. The three unpictured species known from Africa are Rhyothemis mariposa, a widespread species which is found in Zambia but seems to be restricted to wetlands, Rhyothemis cognata, a Madagascar endemic, and Rhyothemis splendens, which has only (ever?) been recorded once, although this was from the southern Democratic Republic of Congo, and so it may occur unrecorded in parts of Zambia.