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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Cucujiformia » Coccinelloidea » Coccinellid group » Lady Beetles (Coccinellidae) » Coccinellinae » Adalia » Two-spotted Lady Beetle (Adalia bipunctata)
Photo#1511995
Another Adalia punctata variation found in house - Adalia bipunctata
Copyright © 2018 Lynn Monroe

Another Adalia punctata variation found in house - Adalia bipunctata
6 miles NW Lyons, Boulder County, Colorado, USA
March 2, 2012
Size: BL ~ 5 mm
A tiny lady beetle found in the house in the CO foothills at ~6400'. I recently submitted what seems to be an Adalia bipunctata variation seen in the house on 12/22/2005. This beetle variation, extremely different in appearance, is most similar to BG # 820567. Besides this face view, I will submit a dorsal view. Any help with its ID is much appreciated.

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Another Adalia punctata variation found in house - Adalia bipunctata Another Adalia punctata variation found in house - Adalia bipunctata
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Contributed by Lynn Monroe on 23 April, 2018 - 2:42pm
Last updated 26 April, 2018 - 7:34pm

Moved
Moved from Lady Beetles.
… James Bailey, 26 April, 2018 - 7:34pm login or register to post comments

Yes, Adalia
This form is a modification of the usual "two-spotted" pattern.
When that form is darker, the two spots tend to extend like this:
https://nzacfactsheets.landcareresearch.co.nz/factsheet/images/Image2ACElarge.jpg

Darker than that, the black markings extend to form a ring. This is called "form annulata":
https://tinyurl.com/y7k77yru

In ''annulata'' you can already start to see the foundation for this very dark form that you found. The second pair of red "spots" is already isolated by this point.

Darker still and you get ''sexpustulata'', which is the same as your form but there is an additional pair of red markings at the very tip of the wings not yet filled in by black:
https://insektarium.files.wordpress.com/2014/01/76.jpg

A little more and you get ''quadripunctata'', which is what you have here.
… James Bailey, 26 April, 2018 - 7:31pm login or register to post comments

 
Adalia bipunctata red to black
This illustrated story of how Adalia bipunctata changed its spots from red with two black dots to black with four red dots, is fascinating. Thanks so much for taking the time to share it with me. Your help is so appreciated.
… Lynn Monroe, 27 April, 2018 - 11:41am login or register to post comments

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