|The Ants of
Genus Camponotus subgenus Myrmopiromis
Genus definition - Wheeler (1921a: 17) gave this as a replacement name for the Old World Myrmepomis, because Emery (1920b: 237) had set up Myrmolophus as a the new subgenus for the New World species but that was an error and Wheeler subjugated the latter as a junior synonym of Myrmepomis, necessitating the creation of a new subgenus name.
Head as in Orthonotomyrmex, major very broad posteriorly, minor trapezoidal, broadened posteriorly; genae without deep pits or fossettes, on major and queen; most with coarse, fairly abundant, obtuse hairs of a pale colour, sometimes forming a fur-coating on gaster.
NOTE - Emery (1925b: 129) had - medium-sized, alitrunk dorsum with an impression anterior to propodeum - chrysurus-group (chrysurus & scalaris) but chrysurus moved by Santschi (1926a) to Myrmopelta and Camponotus scalaris Forel has been transferred by me to subgenus Myrmenosites as clearly quite distinct from any member of C (Myrmopiromis). I have also transferred Camponotus tameri (Weber) to subgenus Myrmacrhaphe as it is very similar to Camponotus (Myrmacrhaphe) rotundinodis.
Robertson & Zachariades (2007) revised the Camponotus fulvopilosus species-group.
Key to species
|1||Pronotum with anterior corners angled but not produced; medium sized relatively stocky; tibiae without coarse setae (piquants)||niveosetosus-group (berthoudi, niveosetosus, victoriae) - 2|
|--||Pronotum with anterior corners at least
elongated large size, tibiae flattened, with piquants on lower border
|fulvopilosus-group (brevisetosus, detritus, fulvopilosus, storeatus) - 4|
|2||Characteristic pilosity of abundant erect snow-white hairs; Major - TL 8 mm; pronotum with distinct but obtusely angled shoulders; sculpturation very fine and close puncturation (finer than other species) head and alitrunk dull remainder fairly shiny; black, antennae and tarsi ferruginous, mandibles dark castaneous red||.|
|.||Minor - TL 6 mm; generally like major but head with posterior angles rounded, dorsmm of pronotum flatter||Kenya south to South Africa & Namibia - niveosetosus|
|--||Erect white or yellowish pilosity sparse||3|
|3||Major - TL 7.5 mm; clypeus rectangular; head trapezoidal, occiput straight; pronotum with weak anterior tuberculose angles; petiole scale transversely striate; erect hairs white, very thick and blunt; black, basal half of scapes yellowish rusty-red||.|
|.||South Africa - berthoudi|
|--||Major TL 8.3 mm; clypeus a shortened hexagon; erect hairs yellowish-white, 14 on the edge of the petiole scale, 8 on each side of propodeal dorsum||South Africa - victoriae|
with anterior corners at least tuberculose;
elongated large size, tibiae flattened, with piquants on lower border - fulvopilosus-group
|4||Major TL ca 15 mm||5|
|--||Major TL no more than 13 mm||6|
|5||Major - TL15-16
mm; head enormous, both very wide and very convex head and alitrunk
dark red; anterior of pronotum with angles formed into teeth or
tubercles; black, dull due to dense reticulo-puncturation all over,
finer on gaster; gaster with a dense covering of thick blunt hairs of a
fulvous or foxy-red colour.
Minor - TL 10 mm; anterior angles of pronotum strongly obtuse formed into a border; wholly black except for brown funiculi and tarsi
|southern Africa - fulvopilosus|
|--||Major - TL 15-16
mm; head very large; anterior margins
of pronotum produced into slightly flattened teeth, about
three-quarters as long as their basal width; petiole scale distinctly
emarginate dorsally; densely pilous, more so than flavopilosus or
fulvopilosus with no glabrous patches; reticulo-puncturation
extends onto petiole scale; head, alitrunk and funiculi dark blood-red,
anterior of head, mandibles, scapes and legs very dark reddish-brown,
Media TL 12 mm & minor TL 11 mm with brighter red areas; pronotal teeth reduced in media and merely angular in minor
||South Africa (Cape ) & Angola - storeatus|
|6||Major - TL 10-13 mm; (comparison with storeatus) pronotum with subdentate angles; dorsum of propodeum longer, narrower and more "cristate"; petiole scale higher and much thinner, with sharp emarginate dorsum; pilosity of gaster pale ochreous, quite short and blunt, evenly distrbuted but sparse; gaster also with fine sparse yellowish pubescence; head, alitrunk and funiculi dark blood-red, anterior of head, mandibles, scapes and legs very dark reddish-brown, gaster black||.|
||Minor TL 7.5-9 mm; head brighter red than major and without puncturation||South Africa - brevisetosus|
||TL 9.5-13 mm; very much like fulvopilosus but smaller; head nitidulous, more finely reticulate; petiole scale thinner and more "procumbent"; pilosity pale flavous, base of gaster glabrous, larger glabrous patches on rest of gaster; dark ferruginous, gaster black||.|
|.||Minor with anterior of pronotum sharply marginate||Namibia - detritus|
© 2007, 2008, 2011, 2013, 2014, 2018 - Brian Taylor CBiol
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.