Showing posts with label Agrionoptera sexlineata. Show all posts
Showing posts with label Agrionoptera sexlineata. Show all posts

Sunday, January 18, 2009

Dairy Farm 2 (stream + Paragomphus spot)

Location:
Dairy Farm stream
Species seen:
Anisoptera--Dragonflies
Aeshnidae
  • Gynacantha basiguttata / Gynacantha demeter / Gynacantha dohrni

  • Gomphidae
  • Paragomphus capricornis

  • Libellulidae
  • Agrionoptera sexlineata
  • Neurothemis flactuans
  • Orthetrum Chrysis
  • Tholymis tillarga

  • Zygoptera--Damselflies
    Amphipterygidae
  • Devadatta argyoides

  • Coenagrionidae
  • Pericnemis stictica

  • Platycnemidae
  • Copera marginipes

  • Protoneuridae
  • Prodasineura notostigma



  • We went to a sandy-based stream near the possible breeding spot of Paragomphus capricornis we found two posts back. The above list comprises of all that we saw (with the exception of the capricornis which we then saw when we visited the possible breeding spot afterwards).

    We first walked downstream. The time was about 9:15am, and there wasn't a lot of Odonata about. However, we saw two red crabs mating. We also spotted a resting Tholymis tillarga, which is a crepuscular species (comes out at dawn and dusk).
    Quite a few all black Devadatta argyoides were spotted. Their wings are edged at the tip with a black band.
    Later on, on our trek back upstream, we spotted the Pericnemis stictica, which is a very large species of damselfly, in fact, the largest damselfly in Singapore.
    We then saw a male Agrionoptera sexlineata. The female can be differentiated from the male by the bands on the tail. The female has yellow bands while the male has red ones.
    Dad and my brother later spotted the Gynacantha species flying about, but unfortunately I wasn't fast enough to track it.

    We spotted the capricornis again this time, however, it did not stay as long as it did last week.
    We also spotted an Gynacantha species, either basiguttata, demeter or dohrni, ovipositing at a muddy bank there. It flew back and forth between 3 spots, laying its eggs systematically. When disturbed by my brother, it flew around the area before returning to its first spot. I was amazed because there was a limited amount of water there. The tiny stream, if it could be called that, was only about 1cm deep and not very clear.

    An interesting trip indeed!

    Saturday, March 22, 2008

    Pots Bazaar

    Location:
    Pots Bazaar

    Species seen:
    Anisoptera--Dragonflies
    Libellulidae
  • Agrionoptera sexlineata
  • Brachydiplax chalybea
  • Camacinia gigantea (uncomfirmed)
  • Neurothemis flactuans
  • Orthetrum chrysis
  • Orthetrum sabina
  • Trithemis aurora

  • Gomphidae
  • Ictinogomphus decoratus

  • Zygoptera--Damselflies
    Coenagrionidae
  • Archibasis Viola
  • Pseudagrion microcephalum

  • Platystictidae
  • Drepanostica quadrata

  • Calopterygidae
  • Vestalis amoena/Vestalis amethystina

  • Chlorocyphidae
  • Libellago aurantiaca (uncomfirmed)
  • Well, we actually went out yesterday since there was sunny weather. Pots Bazaar has a forest habitat, as you might have guessed. Other than the above Odonata, we also saw some leaf beetles, stick insects, assasin bugs, tree hoppers, and others.

    We saw both the female and the male of Agrionoptera sexlineata, which is a lifer for me. The female has a orange stripe in place of the brilliant red/blue stripe the male has. We saw both at the same spot, on a twig.

    We also observed some red Libellulids flying circling over a branch in the water. Because it was very far from where we stood, we could not determine if it was the Neurothemis flactuans or the Camacinia gigantea. The latter has a straight cut on the coloring of its hind wings while the first has a curved cut. However, the individuals were about the same size as an Orthetrum chrysis perching nearby.
    We also saw the red Libellulids chasing away several Orthetrum chrysis.

    While we were walking, we met several cyclists, although cycling is not allowed in the Nature Reserves. This will damage the habitats, as we saw when the cyclists bashed through one of the streams, disturbing the fishes and swirling up the sediments of the stream bed.

    Since there are exams lately, I will not post a lot as I need to spend my weekends studying!
    So that's all for now, bye(: