Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Photo#24284
Crioscolia alcione - Colpa alcione - female

Crioscolia alcione - Colpa alcione - Female
Rancho Santa Ana Botanic Garden, Claremont, Los Angeles County, California, USA
July 14, 2005
Size: estimate ~18-20mm
Scoliid feeding in Narrow-leaved Milkweed (Asclepias fascicularis).

Images of this individual: tag all
Crioscolia alcione - Colpa alcione - female Crioscolia alcione - Colpa alcione - female

Crioscolia alcione
ID based on the ridge between the antennae, vestiture and coloration.

Moved from Trielis octomaculata.

 
Thanks, George -
Some time ago, after going over Paul Hurd's key (CIS Vol.1, No.6), I made a folder in my computer file, based on the possibilty of this being Campsoscolia alcione (now Crioscolia a.). However, I wasn't certain whether the antenna was clavate, with the apical flagellar segments enlarged. Your note reminds me I had wanted to look at specimens at L.A. Nat. Hist. Museum.

 
The males
would have the apical flagellomeres clavate (for Trielis). The females' antennae are pretty consistent throughout since they're much shorter than the males'.

The best key for your area is William MacKay's key to southwestern Scoliidae, Hurd's is out of date. I can email it to you if you'd like.

 
Thanks again, George!
Yes, I'd appreciate it very much if you could e-mail that key to me.

 
Just sent it
Happy to help!

 
Much obliged -
Thanks, George!

Moved
Moved from Scoliid Wasps.

Trielis octomaculata
I am pretty sure this is Trielis octomaculata based on the color patten and locality. Definitely a female specimen. Great shots!

 
Trielis octomaculata
Thanks for the input! I tried to compare wing veination with an image on the cedarcreek site, but feel my images aren't sufficiently clear. The hairyness between abdominal segments in the cedarcreek image appears to be different, though there could be variations.
Where might I find more descriptive information?

 
great photos! i like how the
great photos! i like how the ant is dwarfed my the giant scoliid

 
Could be
Could be Trielis pollenifera which has head, antennae, and 1st abdominal segment black. Also abdominal tergites black with yellow spots.