Current Valid Name: Ooceraea fuscior
Taxonomic History (provided by Barry Bolton, 2019)
Distribution: Geographic regions:
Not found on any curated Geolocale/Taxon lists.
. Kadavu, Taveuni, Vanua Levu.
recognizing the close similarity to C.
, offered that further collections of these species may demonstrate
that the two are insular variants of the same species. The morphology of the
single worker collected from Mt. Delaikoro on Vanua Levu shares the features
that distinguish C. fuscior
from C. cryptus
, and adds further validation
to Wilsons decision to treat the two as separate species.
Only one worker specimen (CASENT0171152) of C. fuscior
has been collected since
Manns expedition to Taveuni. The specimen, despite coming from a different
island (Vanua Levu), strongly resembles the type series and further validates
the consideration of C. fuscior
a distinct species from C. cryptus
Furthermore, a large number of male specimens collected from Taveuni, Vanua
Levu, and Kadavu are close matches to the morphology predicted by the worker
caste of C. fuscior
, and are readily
distinguishable from the males predicted to belong to C. cryptus
. The inferred males C.
males are included in the material examined,
and extend the range from Vanua Levu to the islands of Taveuni and Kadavu.
The sympatry of both forms at several sites on
Viti Levu adds additional support for the current taxonomy.
obtained several small colonies of this species beneath stones after rains, and
describes the workers as rolling up and feigning death when disturbed. The only
other known worker specimen was collected from sifted litter.
In Fiji. Cerapachys fuscior
, like C. cryptus
sp. FJ06, is separated from other Fijian lineages by its
9-segmented antennae and vestigial eyes. It can be distinguished from C. cryptus
by its darker reddish brown
color, larger diameter foveae, and more smooth and shining sculpture between
the foveae. Additionally, the subpetiolar process of C. fuscior
is composed of two parts: a posterior rounded lamellae
and an anterior narrowly attached tooth. The subpetiolar process of C. cryptus
is a single rounded lamellae
with a fenestra. The eyes of C. fuscior
composed of a single ommatidium that can be observed in most specimens despite
their small size. The most obvious character separating C. fuscior
sp. FJ06 is its substantially larger size. Furthermore, the
foveae of Cerapachys
sp. FJ06 workers
are of a finer and shallower quality compared to those of C. fuscior
Type locality: FIJI, Taveuni, Somosomo (W. M.
Mann). Syntypes: 7 workers (MCZC, examined); 8 workers (USNM, examined)
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- Mann, W. M. 1921. The ants of the Fiji Islands. Bull. Mus. Comp. Zool. 64:401-499.
- Wilson, E. O. 1959. Studies on the ant fauna of Melanesia. 5. The tribe Cerapachyini. Pac. Insects 1:39-57.