Odontomachus coquereli (Fisher, B. L. & Smith, M. A. 2008)
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Ordo: Hymenoptera
Familia: Formicidae
Genus: Odontomachus
Name
Odontomachus coquereli Fisher, B. L., 2008 – Wikispecies link – Pensoft Profile
- Odontomachus coquereli Fisher, B. L., 2008, PLoS ONE 3: 14-15.
Description
Figures: worker 1b, 10a,b, 13c; queen 10c,d; male 11a,b,e; map 14a
Materials Examined
Madagascar Coquerel Madagascar Mocquerys
Description
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.
Diagnosis
Worker Diagnosis: Workers of this species can be easily distinguished from troglodytesHNS 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
Distribution and biology. O. coquereliHNS 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. coquereliHNS are most commonly found in rotten logs and consist of small colonies. Queens of coquereliHNS 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.
Description
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].
Diagnosis
Diagnostic barcoding loci. O. coquereliHNS: T-96, C-196, T-211, T-280, A-283.
Discussion
Discussion: Odontomachus coquereliHNS 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. coquereliHNS, 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. troglodytesHNS reproduces by non-claustral independent foundation and colonies can reach 1300 workers [30]. As in A. goodmaniHNS and A. boltoniHNS, the other species without winged queens - there are deep CO1 divergences between different collection localities.
Materials Examined
MADAGASCAR Foret de Binara B.L.Fisher Madagascar Antanambao B.L.Fisher Madagascar Antanambao B.L.Fisher Madagascar Manantenina E.L.Quinter Manantenina River Manantenina River Manantenina River AIntranohofa Madagascar Antalaha B.L.Fisher Befingotra Madagascar Andapa B.L.Fisher Madagascar Ambanizana B.L.Fisher Madagascar Ambinanitelo Fisher, Griswold et al. Madagascar Ambinanitelo Fisher, Griswold et al. Madagascar Ambinanitelo Fisher, Griswold et al. Ambanizana Madagascar Ambanizana B.L.Fisher Madagascar Andampibe Gary D. Alpert Madagascar Antanambe B.L.Fisher et al. Madagascar Manompana B.L.Fisher et al. Madagascar Ambodifotatra B.L.Fisher et al. Madagascar Tampolo Malagasy ant team Madagascar Mahavelona A. Pauly Madagascar Mahavelona A. Pauly Madagascar Camp Vohitsivalana B.L.Fisher et al. Madagascar Camp Rendrirendry B.L.Fisher et al. Madagascar F.C. Andriantantely H.J.Ratsirarson Madagascar Andasibe P.S.Ward Madagascar Miaranony Forest Emile Rajeriarison Madagascar Valoloaka forest Emile Rajeriarison Madagascar Ikongo R. Harin'Hala & M.E. Irwin Madagascar Ambalavao B.L.Fisher Ambalavao
Taxon Treatment
- Fisher, B. L.; Smith, M. A.; 2008: A revision of Malagasy species of Anochetus Mayr and Odontomachus Latreille (Hymenoptera: Formicidae)., PLoS ONE 3: 14-15. doi
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