Odontomachus coquereli Roger

Fisher, B. L. & Smith, M. A., 2008, A revision of Malagasy species of Anochetus Mayr and Odontomachus Latreille (Hymenoptera: Formicidae)., PLoS ONE 3, pp. 1-23: 14-15

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Odontomachus coquereli Roger


Odontomachus coquereli Roger   HNS  

Figures: worker 1b, 10a,b, 13c; queen 10c,d; male 11a,b,e; map 14a

Type material:

Odontomachus coquereli Roger, 1861: 30   HNS   [ 26]. Lectotype: worker, Madagascar ( Coquerel ) ( ZMHB), present designation [examined] AntWeb CASENT0104549. CASC  

Odontomachus coquereli minor Emery 1899: 273   HNS   [ 27]. Lectotype; worker, Madagascar, Baie d' Antongil ( Mocquerys ) ( MSNG), present designation [examined] AntWeb CASENT0102021. CASC   Synonymized with coquereli   HNS   by Brown, 1978: 557 [ 2].

Worker measurements: maximum and minimum based on n = 45 from Madagascar: HL 2.69-3.27, HW (across vertex) 1.26- 1.77, HW (across upper eye margin) 1.54-2.02, CI 57-67, EL 0.46-0.55, ML 1.76-2.16, MI 61-68, SL 3.04-3.96, SI 164-207, WL 4.18-5.11. FL 3.32-4.68, PW 1.11-1.53.

Queen measurements: maximum and minimum based on n = 5 from Madagascar: HL 2.81-2.94, HW (across vertex) 1.39- 1.55, HW (across upper eye margin) 1.83-1.98, CI 62-71, EL 0.45-0.55, ML 1.66-1.81, MI 59-62, SL 3.07-3.29, SI 155-179, WL 4.35-4.56, FL 3.60-3.84, PW 1.28-1.43. Preapical teeth count 7-10.

Male measurements: maximum and minimum based on n = 5 from Madagascar: HL 1.11-1.22, HW 1.41-1.57, CI 128- 134, EL 0.78-0.90, SL 0.30-0.38, SI 21-23, WL 3.38-3.85, FL 2.90-3.16.

Worker Diagnosis: Workers of this species can be easily distinguished from troglodytes   HNS   by their larger size, mandible with long, acute apical and preapical teeth and lack of extraocular furrows and temporal ridges on vertex. Brown [ 2] provides a description and additional references.

Distribution and biology. O. coquereli   HNS   is endemic to Madagascar and is restricted to eastern and northern montane rainforest, lowland rainforest, and littoral forest from 10 to 1325 m (Fig. 10a). It is most abundant at mid-elevations in the northeast such as in Marojejy National Park. Nests of O. coquereli   HNS   are most commonly found in rotten logs and consist of small colonies. Queens of coquereli   HNS   are wingless and very similar to workers; colonies reproduce by fission [ 28]. Males are collected in Malaise traps and yellow pan traps. Workers forage on the ground day and night. A few times BLF has seen solitary foragers high up on trunks and branches of large trees. It is not clear if they are foraging for plant or insect liquids up in the canopy.

There is notable geographic variation in shape of petiole, sculpture and number of preapical teeth. Preapical teeth and denticles range from 7-12. Occasionally, adjacent teeth may be fused at base to form a single bidententate tooth. However, there is no consistent concordant pattern to this variation. Molecular data are also extremely variable - suggesting that these isolated populations have long been separated. Rather than describing these populations as distinct species, we leave them here as a single species - a hypothesis that can be tested in the future with subsequent experiments in both the field and lab.

CO1: The barcode region is extremely variable (Fig. 16) - there is evident isolation by distance which is largely concordant with the biogeographic regions proposed by Wilme et al. [ 29].

Diagnostic barcoding loci. O. coquereli   HNS   : T-96, C-196, T-211, T-280, A-283.

Discussion: Odontomachus coquereli   HNS   from Madagascar, the only species in the genus where winged queens have never been found.

Molet et al. [ 28] investigated the Marojejy population of O. coquereli   HNS   , and based on demography, morphometry, allometry and ovarian dissections demonstrated that the winged queen caste has been replaced by a wingless reproductive caste and that the strategy of colonial reproduction is fission. A single wingless reproductive (ergatoid) was found in each colony. The smallest colonies consisted of at least 5 workers and the largest colonies never exceeded 40 workers, indicating a threshold size at which a colony divides in two daughter colonies. In coIntrast, O. troglodytes   HNS   reproduces by non-claustral independent foundation and colonies can reach 1300 workers [ 30]. As in A. goodmani   HNS   and A. boltoni   HNS   , the other species without winged queens - there are deep CO1 divergences between different collection localities.

Specimens examined for Odontomachus coquereli   HNS   : Specimens from 134 separate collection events from the following 57 localities were examined. MADAGASCAR: Province Antsiranana: Foret de Binara , 9.4 km 235° SW Daraina GoogleMaps CASC CASC1 CASC2 GB1 GB2   ; R.S. Manongarivo, 12.8 km 228° SW Antanambao GoogleMaps   ; R.S. Manongarivo, 14.5 km 220° SW Antanambao GoogleMaps   ; RNI Marojejy, 8 km NW Manantenina GoogleMaps CASC   ; Parc National de Marojejy, Manantenina River , CASC CASC1 GB1   27.6 km 35° NE Andapa CASC   ; Parc National de Marojejy, Manantenina River , 28.0 km 38° NE Andapa   ; Parc National de Marojejy, AIntranohofa , 26.6 km 31° NNE Andapa   ; Foret Ambanitaza, 26.1 km 347° Antalaha GoogleMaps CASC CASC1 GB1   ; Res. Anjanaharibe-Sud, 6.5 km SSW Befingotra ,   ; Res. D' Anjanaharibe-Sud, 17 km W Andapa GoogleMaps   ; Province Toamasina: 6.9 km NE Ambanizana , Ambohitsitondroina GoogleMaps   ; Montagne d'Anjanaharibe, 19.5 km 27° NNE Ambinanitelo GoogleMaps CASC   ; Montagne d'Anjanaharibe, 18.0 km 21 ° NNE Ambinanitelo GoogleMaps CASC   ; Montagne d'Akirindro 7.6 km 341° NNW Ambinanitelo GoogleMaps CASC CASC1 GB1   ; Parc National Masoala, Ambanizana   ,; 5.3 km SSE Ambanizana , Andranobe GoogleMaps CASC   ; 1 km W Andampibe , Cap Masoala GoogleMaps   ; Parc National Mananara-Nord, 7.1 km 261 ° Antanambe GoogleMaps CASC CASC1 GB1   ; Res. Ambodiriana, 4.8 km 306° Manompana , along Manompana river GoogleMaps CASC   ; Ile Sainte Marie, Foret Kalalao, 9.9 km 34° Ambodifotatra GoogleMaps CASC CASC1 CASC2 GB1 GB2   ; Parcelle E3 Tampolo GoogleMaps CASC   ; Mahavelona ( Foulpointe ) GoogleMaps CASC CASC1 CASC2 GB1 GB2   ; Mahavelona ( Foulpointe ), Forest Andalava GoogleMaps CASC   ; Reserve Betampona, Camp Vohitsivalana , 37.1 km 338° Toamasina GoogleMaps CASC CASC1 GB1   ; Reserve Betampona, Camp Rendrirendry 34.1 km 332° Toamasina GoogleMaps CASC CASC1 CASC2 GB1 GB2   ; F.C. Andriantantely GoogleMaps   ; 6 km ESE Andasibe (= Perinet) GoogleMaps CASC   ; Province Fianarantsoa: Nat. Pk.Ranomafana, Miaranony Forest GoogleMaps CASC   ; Ranomafana Nat. Park, Valoloaka forest GoogleMaps   ; Foret d'Ambalagoavy Nord, Ikongo , Ambatombe GoogleMaps CASC   ; 45 km S. Ambalavao GoogleMaps   ; Res. Andringitra, 43 km S Ambalavao   .


Germany, Berlin, Museum fuer Naturkunde der Humboldt-Universitaet


Italy, Genova, Museo Civico di Storia Naturale














Odontomachus coquereli Roger

Fisher, B. L. & Smith, M. A. 2008

Odontomachus coquereli minor

Emery C 1899: 273

Odontomachus coquereli

Roger J 1861: 30