Halgerda batangas

Carlson & Hoff, 2000

Halgerda batangas
Photographed by: Michael Henke

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

Comment from Nathalie Yonow on photo #2550
I have just looked at all your photos under batangas, and this one constantly stands out as being consistently different: the lines are parallel and not reticulate, and the tubercles are veritable high peaks. Until we know more, or there is clinal variation betweent he two, they are best separated.

Comment from Richard Willan on photo #5657
This may be a northern form of Halgerda batangas from Taiwan and Japan because it has large orange-capped tubercles joined by very low ridges like Halgerda batangas, but the reticulating lines between these tubercles are much finer than in typical Halgerda batangas. In fact, they are almost invisible in this individual.

Comment from Richard Willan on photo #1990
Nice photo of a typical individual.

Comment from Richard Willan on photo #1302
A typical individual. Note the network of orange lines on the mantle’s surface.

Locality:

 

Pictures of Halgerda batangas

Halgerda batangas from Raja Ampat, Indonesia
Posted 5 years ago
Viewed 987 times
Halgerda batangas from Sumbawa, Indonesia
Posted 5 years ago
Viewed 819 times
Halgerda batangas from Gorontalo, Indonesia
Posted 5 years ago
Viewed 906 times
Halgerda batangas from Raja Ampat, Indonesia
Posted 5 years ago
Viewed 1078 times
Halgerda batangas from Malapascua, Philippines
Posted 5 years ago
Viewed 1041 times
Halgerda batangas from Kavieng, PNG
Location: Kavieng, PNG
Posted 5 years ago
Viewed 949 times
Halgerda batangas from Kavieng, PNG
Location: Kavieng, PNG
Posted 5 years ago
Viewed 970 times
Halgerda batangas from Bali, Indonesia
Location: Bali, Indonesia
Posted 5 years ago
Viewed 1072 times
Halgerda batangas from Moalboal, Philippines
Posted 5 years ago
Viewed 987 times
Halgerda batangas from Puerto Galera, Philippines
Posted 5 years ago
Viewed 1001 times
Halgerda batangas from Lembeh, Indonesia
Posted 5 years ago
Viewed 889 times
Halgerda batangas from Lembeh, Indonesia
Posted 5 years ago
Viewed 1725 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 bacalusia from West Java, IndonesiaIdentification reviewed by Richard Willan
(22 photos)
Halgerda carlsoni from Lombok, IndonesiaIdentification reviewed by Richard Willan
(94 photos)
Halgerda malesso from Saipan, Nthn. Mariana Islands
(13 photos)
 
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