Camponotus libanicus

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Camponotus libanicus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Species: C. libanicus
Binomial name
Camponotus libanicus
André, 1881

Camponotus libanicus casent0906053 p 1 high.jpg

Camponotus libanicus casent0906053 d 1 high.jpg

Specimen Labels

Synonyms

Identification

Ionescu-Hirsch (2009) - C. libanicus belongs to the Camponotus kiesenwetteri species group (Radchenko, 1997c). The Israeli specimens vary in size and show allometric relationships between body measures. Major workers (n = 7) have a slightly wider than long head and a short scape (SL/HW = 0.86–1.01), while minor workers (n = 10) have a more elongate head (HW/HL = 0.91–0.96) and a relatively longer scape (SL/HW = 1.04–1.13). Petiolar scale thickness of C. libanicus is variable (0.29–0.35 mm), and its shape in lateral view varies from thin, anteriorly concave proximally and moderately convex distally, to thick and anteriorly strongly convex. C. libanicus specimens from Israel are similar to Camponotus nadimi from which they differ only by the anteriorly convex or truncated clypeus with slight indentation medially in major workers and gyne, as opposed to an anteromedially emarginated clypeus in C. nadimi, and by a generally thicker petiolar scale in media and minor workers (range = 0.29–0.35 mm, n = 12, as compared to 0.27–0.33 mm, n = 7). According to Emery (1915), C. libanicus is similar to Camponotus aegaeus from which it differs by the thickness of the petiolar scale. One minor worker of C. aegaeus from Turkey has a thin scale (0.26 mm), with the outline of the anterior surface straight proximally and slightly convex distally, identical in shape to the petiolar scale of a minor worker depicted by Emery (1915, fig. 2b, p. 5), and thinner than in the examined specimens of C. libanicus of similar size.

Israeli specimens show much greater variability of size than that described in Tohmé’s (1969b) redescription of the species, i.e., they are not monomorphic, as stated by Tohmé (1969b). Minor workers with thin petiolar scale cannot be distinguished from C. nadimi minors when collected in isolation.

Keys including this Species

Distribution

Ionescu-Hirsch (2009) - Eastern Mediterranean to Iran (Radchenko, 1997c; Paknia et al., 2008).

Distribution based on Regional Taxon Lists

Palaearctic Region: Cyprus, Greece, Iran, Israel, Lebanon (type locality), Turkey.

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

Castes

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • libanicus. Camponotus libanicus André, 1881b: 54, pl. 3, figs. 14, 15 (w.) LEBANON. Forel, 1911d: 355 (q.); Tohmé, G. 1969: 11 (m.). Combination in C. (Orthonotomyrmex): Forel, 1913d: 435; in C. (Myrmentoma): Emery, 1925b: 121; Menozzi, 1936d: 304. Senior synonym of sahlbergi: Radchenko, 1996b: 1197 (in key); Radchenko, 1997b: 705.
  • sahlbergi. Camponotus (Orthonotomyrmex) libanicus r. sahlbergi Forel, 1913d: 435 (s.w.) TURKEY. Combination in C. (Myrmentoma): Emery, 1925b: 121. Junior synonym of libanicus: Radchenko, 1996b: 1197 (in key).

Taxonomic Notes

Seifert (2019): This taxon has been described from Lebanon. The type specimens depicted in antweb.org under CASENT0913700 shows an absent metanotal depression, a very convex overall dorsal profile line of mesosoma as well as a much stronger sculpture and much denser pubescence on all body surfaces than observed in any member of the C. lateralis group.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Ionescu-Hirsch (2009) - TL = 5.1–7.3, HL = 1.31–1.80, HW = 1.21–1.82, EL = 0.32–0.41, SL = 1.35–1.64, ML = 2.19–2.54, PW = 1.17–1.50, mTbL = 1.02–1.39, hTbL = 1.45–1.85 (n = 20). Gyne: TL = 11.6, HL = 2.23, HW = 2.11, EL = 0.51, SL = 1.72, ML = 3.98, PW = 2.09, mTbL = 1.56, hTbL = 2.34 (n = 1).

References