Halgerda carlsoni

Rudman, 1978

Halgerda carlsoni
Photographed by: Guido Zsilavecz

Kingdom:Animalia
Phylum:Mollusca
Class:Gastropoda
Subclass:Opisthobranchia
Order:Nudibranchia
Suborder:Doridina
Family:Discodorididae
Species:Halgerda carlsoni

Comment from Richard Willan on photo #3341
By contrast, Halgerda malesso has a network of orange lines connecting the pustules and at least one orange line running around the margin of the mantle.

Comment from Richard Willan on photo #2572
The orange speckles on the mantle are extremely fine in this individual.

Comment from Richard Willan on photo #237
One assumes the tiny orange specks are present between the larger orange spots that cap the pustules and mantle ridges (these specks are characteristic of this species), but they are not visible in this image because of the transparency of the body.

Locality:

 

Pictures of Halgerda carlsoni

Halgerda carlsoni from Lombok, IndonesiaIdentification reviewed by Richard Willan
Posted 1 year ago
Viewed 342 times
Halgerda carlsoni from Lembeh, Indonesia
Posted 8 months ago
Viewed 205 times
Halgerda carlsoni from TaiwanIdentification reviewed by Richard Willan
Location: Taiwan
Posted 4 months ago
Viewed 149 times
Halgerda carlsoni from Bunaken, IndonesiaIdentification reviewed by Richard Willan
Posted 3 months ago
Viewed 90 times
Halgerda carlsoni from Bunaken, IndonesiaIdentification reviewed by Richard Willan
Posted 3 months ago
Viewed 83 times
Halgerda carlsoni from North Sulawesi, IndonesiaIdentification reviewed by Richard Willan
Posted 2 months ago
Viewed 89 times
Halgerda carlsoni from Komodo, IndonesiaIdentification reviewed by Richard Willan
Posted 1 month ago
Viewed 85 times
Halgerda carlsoni from Lembeh, Indonesia
Posted 1 month ago
Viewed 42 times
Halgerda carlsoni from Manado, Indonesia
Posted 1 week ago
Viewed 14 times
Halgerda carlsoni from Queensland, Australia
Posted 10 months ago
Viewed 237 times
Halgerda carlsoni from Siladen, IndonesiaIdentification reviewed by Richard Willan
Posted 3 months ago
Viewed 142 times
Halgerda carlsoni from Bali, Indonesia
Location: Bali, Indonesia
Posted 2 months ago
Viewed 109 times
 
 

Similar Species

Author: Dr. Richard C. Willan

Halgerda carlsoni is most similar to Halgerda batangas. However, Halgerda carlsoni has microscopic orange speckles between the ridges (very rarely these speckles join up to form lines) and even when they are lines, they never form into a network of intersecting lines as in Halgerda batangas.

Halgerda malesso has much lower pustules, yellow spots and yellow lines. There are far fewer yellow lines than in Halgerda batangas.

Halgerda bacalusia has the summits of the ridges with strong dark orange lines and microscopic orange speckles between the ridges.

Here a description from Dr. Dave Behrens:
Halgerda bacalusia: broad orange lines follow the ridges to the orange tipped tubercles
Halgerda batangas: network of orange lines between the tubercles, rather than a series of spots
Halgerda carlsoni: the are lines of minute orange spots between the tubercles
Halgerda malesso: no lines between the tubercles, only along the margin
Halgerda stricklandi: orange tubercles arranged randomly, not in ridges. Orange spots not connected

Halgerda batangas from Raja Ampat, IndonesiaIdentification reviewed by Richard Willan
(52 photos)
Halgerda malesso from Saipan, Nthn. Mariana Islands
(8 photos)
 
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