nightfly's picture

Black Darter

Observed: 16th October 2010 By: nightflynightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebratesnightfly’s reputation in Invertebrates
16 Oct 2010 (49)
16 Oct 2010 (63)
Description:
Identifications
Species interactions

No interactions present.

Comments

RoyW's picture

Female, but not ovipositing.

This is a mature female Black Darter, but it would not be typical ovipositing behaviour for it to be half submerged.

Darters oviposit in flight, either flicking eggs down onto the surface of the water, or by dipping just the tip of the abdomen into the water. They do not enter the water, or dip their abdomen into the water, to lay eggs into plant material in the same way as some other dragonflies.
It may be that this individual was ovipositing and somehow ended up in the water (perhaps knocked into the water?), but it is unlikely to have intended to end up like this.

nightfly's picture

Thanks for this Roy, I think

Thanks for this Roy, I think this insect was possibly close to death, either through naturally having lived its alloted time, or by becoming waterlogged and consequently becoming exhausted. It wasnt very lively.

Thanks,

Cathal.

RoyW's picture

Perhaps just cold?

If it had spent even a short while unable to get out of the water in mid October I would expect that there is a reasonable possibility that it was just too cold to be very active by the time you found it.

nightfly's picture

Yeah the water temperature

Yeah the water temperature may have been an issue for it, I left it out on the vegetation so it may have warmed up again. I dont know what the air temperature was, I'd guess around 17 degrees, I got sunburnt that day (I do burn easily), but it was a remarkably warm day for the time of year and many insects took full advantage of it, plenty of damsels and caddis were on the wing but I cant be certain that they were recently hatched, at the time I thought they were just hatched due to the good weather?

Thanks.

Cathal.