A taxonomic revision of the members of the Camponotus lateralis species group (Hymenoptera: Formicidae) from Europe, Asia Minor and Caucasia

Authors

  • Bernhard Seifert Senckenberg Museum of Natural History Görlitz, Am Museum 1, 02826 Görlitz, Germany

DOI:

https://doi.org/10.25674/so-91-1-02

Keywords:

numeric morphology-based alpha-taxonomy, nest centroid clustering, cryptic species, size dimorphism, color polymorphism

Abstract

A taxonomic revision of the Camponotus lateralis group based on methods of Numeric Morphology-Based Alpha-Taxonomy (NUMOBAT) is presented considering the Palaearctic region west of 46°E. One size, nine shape and three setae characters were recorded in a total of 260 samples with 587 worker individuals. Species hypotheses were formed by three exploratory data analyses: the hierarchical methods NC-Ward and NC-part.hclust and the iterative vector-quantization method NC-part.kmeans. Samples with classifications disagreeing among the methods were finally allocated to a particular cluster by wild-card runs in a controlling linear discriminant analysis. 

Results: The taxonomy of the C. lateralis group is complicated by the superimposition of three types of intraspecific polymorphism: (a) minor vs. major worker size dimorphism, (b) polymorphism of pigmentation pattern and (c), in at least one species, extreme dimorphism of shape and setae characters independent from size. A two-step cluster analysis and principal component analysis considering head and scape length indices and absolute size resulted in fully coincident separations of minors and majors with a general rule applicable for a collective of four long-headed and another rule applicable for a collective of four short-headed species. The identity of 42 taxa was evaluated on the basis of original descriptions and type specimens to exclude a junior synonymy of the taxon introduced here. A key is provided for nine valid species occurring in the area of Europe, Asia Minor and Caucasus: Camponotus lateralis (Olivier 1792),
C. piceus (Leach 1825), C. atricolor (Nylander 1849), C. dalmaticus (Nylander 1849), C. candiotes Emery 1894, C. rebeccae Forel 1913, C. anatolicus Karaman & Aktac 2013, C. honaziensis Karaman & Aktac 2013 and C. heidrunvogtae sp. nov. The latter is restricted to a 120 000 km² area  of the Balkans. Camponotus ebneri Finzi 1930 (stat. nov.) from Lebanon was raised to species level and is considered as sister species of C. dalmaticus. Seven taxa from North Africa, the Canaries and Middle East, showing a lot of similarities with species of the C. lateralis group, were excluded to represent synonyms of one of the ten aforementioned valid species. Further, seven Camponotus taxa from Europe, Asia Minor and the Middle East were clearly excluded from the C. lateralis group. Camponotus melanogastes (Latreille 1802), Camponotus axillaris (Spinola 1808), C. merula (Losana 1834) (syn. nov.), C. armouri Wheeler 1926, C. lateralis balearis Santschi 1929 (syn. nov.), C. lateralis purius Santschi 1929 (syn. nov.) and C. kosswigi Donisthorpe 1950 are synonymized under C. lateralis. Camponotus foveolata (Mayr 1853), C. ebeninus Emery 1869 (syn. nov.), C. piceus st. spissinodis var. dusmeti Santschi 1932 and C. figaro Collingwood & Yarrow 1969 (syn. nov.) were synonymized under C. piceus, C. lateralis var. cypridis Santschi 1939 (syn. nov.) under C. rebeccae and  C. lateralis var. rectus Forel 1892 under C. atricolor. Due to insufficient original descriptions and missing types, there is no chance to conclude on either the specific, generic or tribal identity of six taxa supposed by previous authors of belonging to the C. lateralis group. These taxa  – Formica bicolor Latreille 1798, Formica pallidinervis Brullé 1833, Camponotus hemipsila (Förster 1850), Camponotus sicheli Mayr 1866, Camponotus kiesenwetteri angustatus Forel 1889, and Camponotus lateralis var. rhodia Santschi 1934 – were listed under Incertae Sedis.  

 

References

Bolton, B. ( 2003): Synopsis and classification of Formicidae. – Memoirs of the American Entomological Institute 71: 1–370.

Borowiec, L. (2014): Catalogue of ants of Europe, the Mediterranean Basin and adjacent regions (Hymenoptera: Formicidae). – Genus-Monograph 25 (1-2): 1–340.

Borowiec, L. & Salata, S. (2014): Redescription of Camponotus nitidescens Forel, 1889, new status and notes on ants from Kefalonia, Greece (Hymenoptera: Formicidae). – Genus 25: 499–517.

Collingwood, C. A. & I. H. H.Yarrow (1969): A survey of Iberian Formicidae (Hymenoptera). – EOS Revista Española de Entomología 44: 53–101.

Csősz, S. & B. L. Fisher (2015): Diagnostic survey of Malagasy Nesomyrmex species-groups and revision of hafahafa group species via morphology based cluster delimitation protocol. ZooKeys 526: 19–59 [https://doi.org/10.3897/zookeys.526.6037].

Forel, A. (1912): Formicides Néotropiques. Part 6. 5me sous-famille Camponotinae Forel. – Mémoires de la Societé Entomologique de Belgique 20: 59–92.

Galkowski, C., C. Lebas, P. Wegnez, A. Lenoir & R. Blatrix (2017): Redescription of Proformica nasuta (Nylander, 1856) (Hymenoptera, Formicidae) using an integrative approach. – European Journal of Taxonomy 290: 1–40.

Seifert, B. (2007): Die Ameisen Mittel- und Nordeuropas. – Lutra, Tauer, Germany: 368 pp.

Seifert, B. (2008): Removal of allometric variance improves species separation in multi-character discriminant functions when species are strongly allometric and exposes diagnostic characters. – Myrmecological News 11: 91–105.

Seifert, B. (2014): A pragmatic species concept applicable to all eukaryotic organisms independent from their mode of reproduction or evolutionary history. – Soil Organisms 86: 85–93.

Seifert, B. (2016): Analyzing large-scale and intranidal phenotype distributions in eusocial Hymenoptera – a taxonomic tool to distinguish intraspecific dimorphism from heterospecificity. – Myrmecological News 23: 41–59.

Seifert, B. (2018): The Ants of Central and North Europe. – Lutra, Tauer, Germany: 408 pp.

Wagner, H. C. (2014): Die Ameisen Kärntens. Verbreitung, Biologie, Ökologie und Gefährdung. – Naturwissenschaftlicher Verein für Kärnten, Klagenfurt: 464 pp.

Wheeler, W. M. (1913): Corrections and additions to „List of type species of the genera and - subgenera of Formicidae“. – Annals of the New York Academy of Sciences 23: 77–83.

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Published

2019-04-01

How to Cite

Seifert, B. . (2019). A taxonomic revision of the members of the Camponotus lateralis species group (Hymenoptera: Formicidae) from Europe, Asia Minor and Caucasia. SOIL ORGANISMS, 91(1), 7–32. https://doi.org/10.25674/so-91-1-02

Issue

Vol. 91 No. 1 (2019)

Section

ARTICLES

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