dorylus gribodoi

dorylus gribodoi
November 1, 2020


Nests are much less conspicuous than those of driver ant species and extremely difficult to find (for humans, chimpanzees seem to do much better). Edit Ideally, workers from more colonies per species should have been included in our analysis to better cover the total intraspecific variation of morphological traits, but this was not possible because most species are only rarely collected so that larger samples are not available. Photographs to the right depict workers of representative species with different foraging niches and illustrate the differences in relative leg length, mandible length, and antennal scape length associated with the three foraging niches (all pictures are the same scale and all workers have a maximum head width of 2.27 mm; from top to bottom: 1. Disclaimer:

Brady SG, Gadau J, Ward PS: Systematics of the ant genus Camponotus (Hymenoptera: Formicidae): a preliminary analysis using data from the mitochondrial gene cytochrome oxidase I. Hymenoptera: Evolution, Biodiversity and Biological Control. statement and

Because he assumed that the largest workers, which were not available to him for examination, would resemble those of driver ants, he assigned the species to Anomma [11]. Edit In each analysis, one cold and three heated chains were run in parallel for 1 × 106 generations and trees were sampled every 100 generations. Male measurements (n = 12, mean ± SD, range): HW 4.38 ± 0.11, 4.19 – 4.55; SL 1.57 ± 0.05, 1.48 – 1.67; HL 2.24 ± 0.07, 2.12 – 2.33; EL 1.78 ± 0.08, 1.61 – 1.88; DPF 2.77 ± 0.12, 2.57 – 2.95; PeW 3.70 ± 0.14, 3.52 – 3.90; HTL 2.29 ± 0.08, 2.07 – 2.42; PL 2.10 ± 0.08, 1.99 – 2.24; PD 1.01 ± 0.05, 0.96 – 1.09; SPWB 1.05 ± 0.07, 0.93 – 1.14. Genera Insectorum, fasc.

Science. Edit


This material is based upon work supported by the Our results further show that the differences in life-style between Dorylus s.l. species ( Schöning et al. We compared these distances to the genetic distance between two specimens of D. (Anomma) molestus collected from the same population at Mt.

Dorylus (Dorylus) gribodoi  Four key morphological traits were analysed: Maximum head width (HWmax), mandible length (ML), antennal scape length (SL), and hind leg length (HLL). BMC Evolutionary Biology This did not reveal any stop codons that could have been indicative of additional pseudogenes, but made us exclude one more sequence from the alignment, because of an extremely high rate of unique amino acid substitutions (GenBank accession number [EF413886]). Distribution: West Africa (from Guinea and Liberia to Cameroon). Our present findings thus give strong independent support for the inference of Schöning et al.

and has nearly identical hunting behavior and habitat requirements, such that the two species may be easily confused in the field. J Appl Entomol. workers of the same size class can be separated from workers of the D. kohli 

Seifert B: How to distinguish most similar insect species – improving the stereomicroscopic and mathematical evaluation of external characters by example of ants. Worker measurements: Worker caste highly polymorphic, among samples from Taï ( Ivory Coast) HW varies between 0.78 mm and 2.9 mm. We assume, however, that our morphological analysis based on a few colonies is fairly representative for the species as a whole, because measurement data on driver ants show that variation within and between populations of the same species is much less than variation between species (C. Schöning, unpublished).

conradti, 8. By using this website, you agree to our 3View FIGURE 3) ( Emery 1892) and the nearly flat posterior head margin ( Fig.

The close phylogenetic relationship between the leaf-litter Anomma species and the subgenus Dorylus s.s. (without D. spininodis – see below) also emerges from the position of the male of D. gribodoi, which clearly belongs to a clade of leaf-litter Anomma species, although it was originally described as belonging to the subgenus Dorylus s.s.. 4.

The run was repeated three times from random starting trees using default termination conditions.


Dating analyses were conducted with the program r8s v. 1.7 [36], using penalized likelihood [37], the TN algorithm and an additive penalty function.

), Rhogmus (Rh.

are unique (and easily identifiable) among all Dorylus  Edit

2004, Section of Evolution and Ecology, University of California, Davis. All measurements were taken using a MS 5 Leica stereomicroscope fitted with an ocular micrometer, using methods recommended by Seifert [35] to minimise measurement errors (magnifications 10× – 64×).

Kohl, C.S.S.C. und die systematische Eintheilung der Formiciden. Part of


CAS  Edit complex also by the posterior margin of the head being angular in lateral view and not smoothly rounded ( Fig. 12), funicular segments and scape yellow; head glossy, finely punctate, without conspicuous pilosity, antennal fossae deeply impressed; small (0.18 mm diameter) ocellus-like body located on the midline of head in frontal view 1.98 mm dorsad of the anterior clypeal border ( Fig.


et al.

Twitter. . We investigated the evolution of foraging niche in Dorylus s.l. 2000, Sinauer, Sunderland, MA.

The variation in maximum head width, antennal scape length, mandible length, and hind leg length was strongly correlated with foraging niche (Nested ANOVA, p < 0.025 for all traits). Edit Tukey's Studentized Range (HSD) Test was employed to examine differences between categories. Five of these subgenera are entirely subterranean, but the sixth subgenus Anomma encompasses both species that hunt in the leaf-litter and species that forage on the forest floor and in the vegetation. ) (van Boven 1975), whereas the two lobes are very broad posteriorly in driver ant queen hypopygia (see e.g. in press (examined). Edit Holotype worker, Ghana: Accra, MCSN (examined), new synonomy.

was recognized by Emery in his original description of D. gerstaeckeri ( Emery 1895)  and that leaf-litter foraging and surface swarm raiding originated later. FIGURE 3. Dorylus gribodoi Emery 1892: 570 Edit.Two syntype males, West Africa [ Wheeler (1922) and Bolton (1995) listed Togo as country of the type location]: Amu, collected by M. Gribodo, MCSN (examined).

The DNA sequences also allow us to establish new associations between males and workers for several species across the different subgenera, thus helping to clarify Dorylus taxonomy. Subgenera are abbreviated as in Fig.

), Alaopone (Al. Edit 2).

Mem R Accad Sci Ist Bologna. queen was collected along with workers from a nest at Lamto ( Ivory Coast) by Jean-Marie Leroux and below we provide the queen description. ), Dorylus s.s. 1985, 10: 1-10. Finally, males of D. kohli have been collected together with workers by J. van Boven and are now shown to be identical to males that have originally been described as a Dorylus s.s. species (W. Gotwald and CS, unpublished). SL, hind leg length and mandible length notably shorter than in workers of the driver ant clade ( Kronauer et al. 3).

queens; head deeply impressed posteriorly at pronotal insertion, posterior angles rounded, directed posteriorly ( Fig.

Google Scholar, Kingdon J: The Kingdon field guide to African mammals.

For these morphometric analyses we selected about 100 workers (preserved in 70% ethanol) from at least three colonies (50 workers from a single colony if insufficient samples were available) from the same study site for each species to cover the entire worker size range as much as possible.
affinis (reversal subterranean) 4. The evolutionary transitions in foraging niche were more complex than previously thought, but our comparative analysis of worker morphology lends strong support to the contention that particular foraging niches have selected for very specific worker morphologies.

2001, 16: 314-321. Edit Niche category had a significant effect on all traits (Nested ANOVA, p < 0.025 for all traits).

workers can be separated from Dorylus gribodoi  TREE. (An.) 2).

We used a concentration of 2.5 mM MgCl2 in all reactions. (Di.)

at 45.6 mya [2]; see text for ranges. gerstaeckeri (possibly the same species), 3. 14); mesosoma finely punctate without conspicuous pilosity.

Previous analyses of Dorylus s.l. Check out Dorylus gribodoi by Tim Nelson on Amazon Music.

Some species conduct spectacular swarm raids, in which hundreds of thousands of ants form a dense carpet that sweeps through areas of 1000 m2 or more on a single day in search of prey. Dorylus Fabricius, 1793 Species: Dorylus gribodoi Emery, 1892 : Direct Children: Subspecies: Dorylus gribodoi confusus Santschi, 1915 Subspecies: Dorylus gribodoi gribodoi Emery, 1892 Subspecies: Dorylus gribodoi insularis Santschi, 1937

E. burchellii was used as the single outgroup in MrBayes v3.1.2 [31], following [2–4]. army ants and to infer the evolutionary transitions in foraging niche and associated morphological adaptations.

Facebook. army ants under MP using the computer program MacClade 4.0 [34] on the Bayesian topology obtained from MrBayes v3.1.2 [31]. laevigatus).

1; Schöning et al. View Cited Treatment Manage cookies/Do not sell my data we use in the preference centre.

Mesosoma: Similar in colour to head except for dark reddishbrown patches on dorsum of pronotum, mesonotum, and propodeum.

species (although the respective node was collapsed in ML bootstrap analysis), confirming an earlier inference by Brady [2]. Frontal view of the head of a Dorylus gribodoi male from Taï, Ivory Coast. 10.1046/j.1365-2435.1999.00343.x. Search in featureTaxon InformationContributor GalleriesTopicsClassification.

BMC Evol Biol 7, 56 (2007).,

Using a 0.014 reference value for two distantly related specimens of Dorylus (Anomma) molestus from the same population, we concluded that the first five pairs represent workers and males of the same species.


The largest workers of D. emeryi  2). Dorylus gribodoi Emery 1892 Edit ( Figures 2 –5 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5, 7 View FIGURE 7, 9 View FIGURE 9, 11– 13 View FIGURE 11).

Schöning, Caspar, Gotwald, William H., Kronauer, Daniel J. C. & Vilhelmsen, Lars, 2008, Taxonomy of the African army ant Dorylus gribodoi Emery, 1892 (Hymenoptera, Formicidae) — new insights from DNA sequence data and morphology, Zootaxa 1749, pp.

The total evidence indicates that: 1.

While the colouration of D. gribodoi  10.1093/bioinformatics/17.12.1244. Franks NR, Sendova-Franks AB, Simmons J, Mogie M: Convergent evolution, super-efficient teams and tempo in Old and New World army ants. Lohier and Posth, MNHN (examined), new synonomy. Edit

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