The Ants of
Africa SUBFAMILY MYRMICINAE - Genus Baracidris |
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Contents - Myrmicinae - MYRMICINAE Introduction |
In Tribe STENAMMINI (?) (Bolton, 1995).
Diagnostic Features - Antennae 12-segmented with a distinct two-segmented club, no scrobes. Eyes minute. Palp formula 2,2. Frontal lobes closely approximated, with the median portion of the clypeus reduced to a very narrow strip and raised centrally in the form of a narrow longitudinal ridge. Mandibles sub-triangular, with 4-6 teeth. Metapleural lobes large and prominent, connected to the propodeal spines by broad conspicuous lamellae.
Recognised as a new genus by Bolton (1981b, illustrated), with two species. Bolton's genus description is at .
A third species, pilosa was described by Fernández (2003) in a paper on Adelomyrmex that is unavailable on HNS. Kindly, he has sent me the following text -
Baracidris
Bolton Figs. 69, 70, 77
Baracidris
Bolton, 1981: 252 (worker). Type species: Baracidris meketra
Bolton (by original designation).
The genus Baracidris
includes three small species (one undescribed) which
are litter inhabitants in Central and Western Africa. Although the
genus is
easily isolated from the other African myrmicines, this is a more
difficult
task regarding the World fauna. The combination of characters (median
portion of the clypeus as narrow fringe, antennae 12 segmented with
club 2
segmented, reduced palps, metapleural lobes larger than in Adelomyrmex,
petiole and postpetiole subcylindric) separates this genus
from all other
myrmicines, although currently we lack synapomorphic features for
Baracidris.
We maintain this genus primarily upon its geographical
distribution.
Key to species (workers) edited from Fernández (pers. comm.). Modified from Bolton (1981: 255)
1 | Body without standing pilosity and with appressed pubescence; mesosoma dorsally with punctures; HW less than 0.46 mm | 2 |
-- | Body with standing pilosity on head, petiole and postpetiole, less on mesosoma, without appressed pubescence; promesonotum dorsally with a large central area smooth and shining, devoid of punctures; HW at least 0.46 mm | Kenya, Uganda - pilosa |
1 | Central anterior clypeal margin produced into a narrow truncated lobe, plus the occipital margin in full face view smoothly rounded; head slightly broader and scapes longer | Gabon - sitra |
-- | Central anterior clypeal margin not produced into a narrow truncated lobe; occipital margin in full face view indented or concave medially; head slightly narrower and antennal scapes relatively longer | Ivory Coast, Ghana, Nigeria - meketra |
MYRMICINAE Introduction |
© 2007, 2009, 2012 - Brian Taylor CBiol FSB FRES 11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K. |
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