Camponotus

Rakotonirina, Jean Claude & Fisher, Brian L., 2018, Taxonomic revision of the Malagasy Camponotus subgenus Mayria (Hymenoptera, Formicidae) using qualitative and quantitative morphology, Zootaxa 4438 (1), pp. 1-58: 14-19

publication ID

https://doi.org/10.11646/zootaxa.4438.1.1

publication LSID

lsid:zoobank.org:pub:55BEB1B1-DA14-4CC4-92EB-1EA98AD6277C

persistent identifier

http://treatment.plazi.org/id/03C287BB-E866-FF98-31A6-4CF2FA36FC34

treatment provided by

Plazi

scientific name

Camponotus
status

 

Identification key to worker caste of the Malagasy Camponotus  subgenus Mayria 

1. Median portion of clypeus with longitudinal carina ( Fig. 2A View Figure )................................................... 2 - Median portion of clypeus without longitudinal carina ( Fig. 2B View Figure )................................................. 6 2. Smaller species (minor: CS: 0.70–1.26; major: 1.20–1.67); distal portion of procoxa white ( Fig. 3A View Figure )....................3 - Larger species (minor: CS: 0.73–1.37; major: CS: 1.39–2.1); procoxa without white patch ( Fig. 3B View Figure ).................... 4

3. Dorsum of mesosoma covered with numerous slender erect hairs and elongate appressed hairs; in lateral view, petiolar node higher than long ( Fig. 4A View Figure ).......................................................................... repens 

- Pronotum, junction of dorsum and declivity surface of propodeum and posterodorsal margin of petiole each with one pair of elongate, stout erect hairs; a few short appressed hairs present on dorsum of mesosoma; in lateral view, petiolar node longer than high ( Fig. 4B View Figure )................................................................................. raina 

4. In lateral view, mesosoma short and high; dorsal margin of petiolar node convex; dorsum of mesosoma covered with numerous (15-20) long erect hairs and a scattered short pubescence ( Fig. 5A View Figure )........................................ manabo 

- In lateral view, mesosoma long and low, petiolar node tapered dorsally; dorsum of mesosoma covered with few (6-10) short erect hairs and abundant long pubescence ( Fig. 5B View Figure )........................................................... 5 5. Anteromedian clypeal margin projecting into an obtusely triangular lobe ( Fig. 6A View Figure )............................. liandia  - Anteromedian clypeal margin broadly rounded, almost truncate ( Fig. 6B View Figure )................................... lubbocki  6. Apical margin of mandible armed with five teeth ( Fig. 7A View Figure )................................................. tanosy  - Apical margin of mandible armed with six teeth ( Fig. 7B View Figure )...................................................... 7

7. Anteromedian margin of clypeus bordered by a lamella; in full-face view, head distinctly longer than broad (CWb/CL: minor: 0.68±0.01; major: 0.89±0.001) ( Fig. 8A View Figure ); in lateral view, junction of dorsal and declivity surfaces of propodeum broadly rounded.......................................................................................... sada 

- Anteromedian margin of clypeus not bordered by a lamella; in full-face view, head not strongly longer than broad (CWb/CL: minor: 0.76±0.03–0.84±0.02; major: 0.93±0.04–1.01±0.02) ( Fig. 8B View Figure ); in lateral view, junction of propodeal dorsum and declivity surface with a distinct angle......................................................................8

8. In lateral view, mesosoma short and high, its dorsal outline continuously arched and dome-like in structure; propodeal declivity inclined posteriorly ( Fig. 9A View Figure )..........................................................................9

- In lateral view, mesosoma long and low, its dorsal outline not dome-like in structure; propodeal declivity inclined anteriorly ( Fig. 9B View Figure )........................................................................................... 11

9. In lateral view, propodeal dorsum slightly excised medially, petiole node longer than high ( Fig. 10A View Figure )............. .. lamosy 

- In lateral view, propodeal dorsum smooth, without excision or concavity ( Fig. 10B View Figure ); petiole node as long as high or higher than long............................................................................................... 10

10. Larger species (CS: minor: 1.22±0.10; major: 1.64±0.12); in lateral view, petiole node distinctly higher than long ( Fig. 11A View Figure ); anteromedian margin of clypeus broadly convex ( Fig. 16B View Figure ).......................................... dromedarius 

- Smaller species (CS: minor: 1.05±0.09; major: 1.50±0.11); in lateral view, petiole node as long as high ( Fig. 11B View Figure ); anteromedian margin of clypeus slightly concave medially ( Fig. 30B View Figure ).............................................. pulcher 

11. Color of legs as the same as color of body, trochanters and distal portions of coxae yellow, reddish-black or dark brown; petiole node flattened anteroposteriorly ( Fig. 12A, 12B View Figure )............................................................12

- Legs with at least trochanters and distal portions of coxae yellowish to white, not as the same as color of body; petiole node not flattened anteroposteriorly, its dorsal margin distinctly broadly convex ( Fig. 12C View Figure ).................................. 13

12. Body entirely yellow to light brown, antenna becoming dark brown toward its apex ( Fig. 13A View Figure ).................. .. christi 

- Body entirely or mostly black to reddish-black; antenna brown to dark brown basally and becoming dark brown to black toward its apex ( Fig. 13B View Figure )......................................................................... .. mainty 

13. In lateral view, length of posterior portion of propodeal dorsum measured from the end of line connecting anteriormost point of pronotal shield and metathoracic spiracle as long as height of declivity ( Fig. 14A View Figure ); hind tibia shorter than hind femur; hind tibia shorter (HTL/CS: minor: 1.21±0.12; major: 1.07±0.14).............................................. maculiventris 

- In lateral view, length of posterior portion of propodeal dorsum measured from the end of line connecting anteriormost point of pronotal shield and metathoracic spiracle roughly twice as long as height of declivity ( Fig. 14B View Figure ); hind tibia as long as hind femur; hind tibia longer (HTL/CS: minor: 1.33±0.06; major: 1.09±0.05).................................... foersteri