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 GoogleMapsCASCCASC1CASC2GB1GB2  ; 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 GoogleMapsCASC  ; Parc National de Marojejy, Manantenina River ,CASCCASC1GB1  27.6 km 35° NE AndapaCASC  ; 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 GoogleMapsCASCCASC1GB1  ; 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 GoogleMapsCASC  ; Montagne d'Anjanaharibe, 18.0 km 21 ° NNE Ambinanitelo GoogleMapsCASC  ; Montagne d'Akirindro 7.6 km 341° NNW Ambinanitelo GoogleMapsCASCCASC1GB1  ; Parc National Masoala, Ambanizana   ,; 5.3 km SSE Ambanizana , AndranobeGoogleMapsCASC  ; 1 km W Andampibe , Cap MasoalaGoogleMaps  ; Parc National Mananara-Nord, 7.1 km 261 ° Antanambe GoogleMapsCASCCASC1GB1  ; Res. Ambodiriana, 4.8 km 306° Manompana , along Manompana riverGoogleMapsCASC  ; Ile Sainte Marie, Foret Kalalao, 9.9 km 34° Ambodifotatra GoogleMapsCASCCASC1CASC2GB1GB2  ; Parcelle E3 Tampolo GoogleMapsCASC  ; Mahavelona ( Foulpointe )GoogleMapsCASCCASC1CASC2GB1GB2  ; Mahavelona ( Foulpointe ), Forest AndalavaGoogleMapsCASC  ; Reserve Betampona, Camp Vohitsivalana , 37.1 km 338° Toamasina GoogleMapsCASCCASC1GB1  ; Reserve Betampona, Camp Rendrirendry 34.1 km 332° Toamasina GoogleMapsCASCCASC1CASC2GB1GB2  ; F.C. Andriantantely GoogleMaps  ; 6 km ESE Andasibe (= Perinet)GoogleMapsCASC  ; Province Fianarantsoa: Nat. Pk.Ranomafana, Miaranony Forest GoogleMapsCASC  ; Ranomafana Nat. Park, Valoloaka forest GoogleMaps  ; Foret d'Ambalagoavy Nord, Ikongo , Ambatombe GoogleMapsCASC  ; 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