.jpg){kind=logo}
Key to Afrotropical Tetramorium flabellum species group
This worker key is based on Bolton (1980)[1]
You may also be interested in
NOTE: Tetramorium flabellum is keyed under the former Triglyphothrix group
1
- With the mesosoma in profile, the dorsum with standing hairs that are longer than broad . . . . . 2
- With the mesosoma in profile, the dorsum without standing hairs ..... Tetramorium bellicosum
2
return to couplet #1
- Strongly bicoloured species with head and gaster yellow and mesosoma black or blackish brown . . . . . 3
- Uniformly coloured species or with gaster differing in shade from the rest of the body . . . . . 4
3
return to couplet #2
- Disc of postpetiole longitudinally costulate or rugose ..... Tetramorium coloreum
- Disc of postpetiole smooth and shining ..... Tetramorium postpetiolatum
4
return to couplet #2
- Petiole in profile with the anterior face high, the dorsal and posterior faces fused and forming a single continuous steep convexity, without a posterodorsal angle ..... Tetramorium invictum
- Petiole in profile with the dorsal and posterior faces separate and distinct, the two separated by a sharp or rounded posterodorsal angle . . . . . 5
5
return to couplet #4
- Base of first gastral tergite sculptured with costulae, puncturation, or both . . . . . 6
- Base of first gastral tergite unsculptured, smooth and shining except for hair-pits . . . . . 7
6
return to couplet #5
- Alitrunk and pedicel segments dorsally blanketed by a fine, very dense reticulate-puncturation, rugulose sculpture which is present is very feeble and secondary to the very conspicuous puncturation. All dorsal surfaces of body with dense very short and fine pilosity..... Tetramorium granulatum
- Alitrunk and pedicel segments dorsally with a distinct wide rugoreticulum, the spaces between which are mostly smooth and without puncturation. Dorsal alitrunk and gaster with scattered long stout blunt hairs ..... Tetramorium pylacum
7
return to couplet #5
- Dorsum of postpetiole with an unsculptured or virtually unsculptured median longitudinal strip; the dorsum distinctly less strongly sculptured than the sides and very obviously less strongly sculptured than the petiole dorsum ..... Tetramorium sigillum
- Dorsum of postpetiole sculptured, as strongly sculptured as the sides and usually about as strongly sculptured as the petiole dorsum . . . . . 8
8
return to couplet #7
- Species with broader head and shorter scapes, CI 89-95, SI 80-85..... Tetramorium saginatum
- Species with narrower head and longer scapes, CI 84-89, SI 95-103 . . . . . 9
9
return to couplet #8
- Lightly coloured species, uniform yellowish brown to light orange-brown ..... Tetramorium kestrum
- Much darker species, uniform blackish brown to black . . . . . 10
10
return to couplet #9
- Hairs on dorsum of head (discounting those on clypeus and occiput) and on first gastral tergite markedly longer than the maximum diameter of the eye ..... Tetramorium geminatum
- Hairs on dorsum of head (discounting those on clypeus and occiput) and on first basal gastral tergite not obviously longer than the maximum diameter of the eye ..... Tetramorium ataxium
