Does anyone know what bug this is?

For the discussion of topics related to the conservation, cultivation, propagation and exhibition of cacti & other succulents.
Forum rules
For the discussion of topics related to the conservation, cultivation, propagation and exhibition of cacti & other succulents only.

Please respect all forum members opinions and if you can't make a civil reply, don't reply!
Post Reply
User avatar
Chris L
BCSS Member
Posts: 1519
Joined: 11 Oct 2009
Branch: MANCHESTER
Country: England
Role within the BCSS: Member
Location: Lancashire, England
Contact:

Does anyone know what bug this is?

Post by Chris L » Fri Jul 05, 2019 3:41 pm

Does anyone know what bug this is, please?

There seem to be rather a lot in the GH and I've seen them before and they don't seem to cause a problem. That is a typical Mammillaria flower for scale purposes.

Thank you.
what_bug2.jpg
User avatar
Diane
BCSS Member
Posts: 4423
Joined: 15 Jun 2007
Branch: KlNGSTON-on- THAMES
Country: UK
Role within the BCSS: Member

Re: Does anyone know what bug this is?

Post by Diane » Fri Jul 05, 2019 3:59 pm

It's Thrips - probably Western Flower Thrips. They can do damage, usually unnoticeable at first, but they will suck flower buds, and are a real pest of Lithops and other mesembs, as they feed in the centre of the plants before new leaves emerge, leaving bad scarring. Look for silvery streaks on flower buds, and if you blow on them, the Thrips tend to run about. Alas, no real control, although SB Invigorator might kill some adults. The life cycle is that they lay eggs under the soil, which emerge as nymphs, making control very difficult.
I had them in my mesembs for years, until they almost disappeared of their own accord, but I saw some last week in a Pachypodium flower, so they're still around.
Diane - member of Kingston branch

Growing cacti - balm to the soul!
User avatar
Chris L
BCSS Member
Posts: 1519
Joined: 11 Oct 2009
Branch: MANCHESTER
Country: England
Role within the BCSS: Member
Location: Lancashire, England
Contact:

Re: Does anyone know what bug this is?

Post by Chris L » Fri Jul 05, 2019 4:34 pm

Thanks for the info. Bit like a mealy bug then. X(

I've seen them before crawling around, but this is the first time I've been able to get a decent picture.
brianc
BCSS Member
Posts: 95
Joined: 23 Oct 2013
Branch: CHELMSFORD
Country: england
Role within the BCSS: Branch Treasurer

Re: Does anyone know what bug this is?

Post by brianc » Fri Jul 05, 2019 8:42 pm

If you grow lithops keep an eye out, they will scar them bad. But the new heads the following year will be
unmarked.
peter831shaw
Registered Guest
Posts: 69
Joined: 03 Sep 2018
Branch: None
Country: USA

Re: Does anyone know what bug this is?

Post by peter831shaw » Sat Jul 06, 2019 3:27 pm

Thrips are nasty little pests, and as mentioned do lots of damage that is hard to see until too late,

They are attracted to blue, so you might want to avoid wearing blue if you have been working in the garden (they like turfgrass among other plants) before coming into the greenhouse.

You can also hang blue sticky traps above your susceptible plants, just like yellow sticky traps for whitefly.

Don't use them as a control but to monitor for increasing populations.

I have yellow traps above my most susceptible succulents and I don't like wearing yellow anyway.......
Peter Shaw
Post Reply