Tetramorium chefketi Forel, 1911

Sz, Sándor Cs Ő, Radchenko, Alexander & Schulz, Andreas, 2007, Taxonomic revision of the Palaearctic Tetramorium chefketi species complex (Hymenoptera: Formicidae), Zootaxa 1405, pp. 1-38 : 18-20

4. Tetramorium chefketi Forel, 1911 (figs 32–38)

Tetramorium caespitum var. chefketi Forel, 1911: 332 (/); TYPE MATERIAL: LECTOTYPE / and PARALECTOTYPE // designated below, for the locality details see lectotype designation (3/ / MHNG); raised to species rank: Agosti & Collingwood 1987a: 56; Senior synonymy fixed as the first reviser act hereby. (ICZN 1999. Art. 24.2.2.).

Tetramorium caespitum var. sarkissiani Forel, 1911: 332 . (/); TYPE MATERIAL: LECTOTYPE / and PARALECTO­ TYPE // designated below, for the locality details see lectotype designation (3/ / MHNG); junior synonymy fixed as the first reviser act hereby. (ICZN 1999. Art. 24.2.2.). New synonymy

Tetramorium caespitum st. turcomanica Santschi 1921 a: 111 [mispelled as Tetramorium caespitum st. turcomana: Emery (Sic!)]; first available use of Tetramorium caespitum caespitum var. turcomanica Emery, 1909: 702 (/, Ψ); TYPE MATERIAL: SYNTYPES “Dschilarik” [now TURKMENISTAN] (1/, 1Ψ, / MSNG); raised to species rank: Tarbinsky 1976: 109; junior synonym of T. forte Forel : Dlussky et al. 1990: 202; not Radchenko 1992b: 52. New synonymy

Tetramorium taurocaucasicum Arnoldi, 1968: 1813 (/, Ψ, ♂); TYPE MATERIAL: HOLOTYPE /, [ UKRAINE], “Crimea, Gurzuf, 16.vi.1948, K. Arnoldi” [original label is in Russian] (ZMMU); PARATYPES, 14 /, 4 Ψ and 3 ♂ from the nest of the holotype, and from Yalta (Crimea), Tuapse, Novorossiysk (NW Caucasus, RUSSIA) and GEORGIA (/, Ψ, ♂ ZMMU); junior synonym of T. forte: Dlussky et al. 1990: 202 , Atanasov & Dlussky 1992: 152, Radchenko 1992b: 51. New synonymy

Redescription of worker (figs 35–38). Medium to large size, CS 869 [740, 972]. Whole body and appendages dark brown to black. Head nearly square, CL/CW 1.01 [0.97, 1.04], with very feebly convex sides, straight occipital margin and rounded occipital corners. Eyes small, EYE 0.171 [0.165, 0.184]. Frons moderately narrow, FR/CS 0.37 [0.35, 0.39], frontal lobes usually wider, FL/FR 1.03 [1.0, 1.09]. Scape long, SL/CS 0.82 [0.78, 0.87], without longitudinal dorsal carina basally, smooth and shiny. Promesonotal dorsum slightly convex, metanotal groove rather deep. Propodeal teeth long. Petiolar node cubic in profile, NOH/NOL 0.86 [0.76, 0.97], petiole relatively low and long, and PEH/NOL 1.52 [1.37, 1.69]. General appearance coarsely rugose, ground surface microreticulate. Head dorsum longitudinally rugose and microreticulate, occiput and sides rugoso­reticulate, ground surface microreticulate. Alitrunk dorsum, mesopleuron and dorsum of petiolar node rugoso­reticulate, ground surface coarsely microreticulate, dorsum of postpetiole longitudinally rugulose and microreticulate. Polygonal striation continuous on 1st gastral tergite (see fig. 8.). Ventral surface of head with several short and few longer straight setae, arising posterior to buccal cavity (see fig. 5.).

Redescription of gyne (figs 32–34). Large size, CS 1121 [1060, 1180]. Whole body and appendages black. Head wider than long, CL/CW 0.92 [0.89, 0.95] with sides and occipital margin straight, and widely rounded occipital corners. Frons moderately narrow, FR/CS 0.38 [0.36, 0.40], frontal lobes as wide as frons, or slightly wider FL/FR 1.01 [1.0, 1.03]. Scape long, SL/CS 0.77, without longitudinal dorsal carina basally, smooth and shiny. Head wider than scutum, MW/CS 0.94 [0.88, 1.01]. Propodeal teeth long. Dorsal crest of petiolar node straight in frontal view; in profile, node with flattened dorsal surface. Petiole and postpetiole relatively narrow, WAIST 0.90 [0.86, 0.96]. General appearance coarsely rugose, ground surface microreticulate, dull. Head dorsum, occiput and sides rugoso­reticulate, ground surface microreticulate. Frons longitudinally rugose and microreticulate. Scutum and scutellum longitudinally rugose, scutellum more or less smooth medially. Sides of alitrunk, rugoso­reticulate and microreticulate, ventral part of katepisternum always rugulose, or microreticulate. Dorsum of petiolar node and postpetiole coarsely reticulate and microreticulate. Polygonal striation disrupted on 1st gastral tergite, superficially microreticulate basally. Ventral surface of head with several short and few longer straight, or few C­shaped setae arising posterior to buccal cavity.

Redescription of male. Whole body and appendages black. Head with convex sides, rounded occipital margin and widely rounded occipital corners. Head as wide as scutum. Propodeal teeth short, propodeum angulate in profile. Dorsal crest of petiolar node in frontal view with sharp, slightly emarginate, transversal edge. Head, alitrunk and waist coarsely sculptured, ground surface microreticulate, dull. Head rugoso­reticulate, ground surface microreticulate. Scutum and scutellum longitudinally rugose. Sides of alitrunk longitudinally rugose. Dorsum of petiolar node and postpetiole coarsely reticulate. Polygonal striation disrupted on 1st gastral tergite.

Lectotype designation of Tetramorium chefketi Forel, 1911 .

In order to avoid any further nomenclatural problems it is necessary to designate a lectotype. We investigated three syntype workers mounted on one pin, labeled as: “ T. caespitum L.” [/] “Bou Youk Déré” [/] “Bosphore européen (Forel)” [—] “ v. chefketi Type For” [—] “v. T. chefketi For ” [—] Typus [—] Coll. Forel.

These data match the original description ( Forel 1911: 332.). The lectotype is positioned on the distal end of the upper card (this is mentioned on the reverse side of lectotype label). The lectotype is in good condition, except that the left funiculus (excluding the first segment), the left foreleg and the tarsus of the right hind leg are missing.

Morphometric data of the lectotype of T. chefketi Forel, 1911 :

CL: 990; CW: 990; FR: 370; FL: 385; SL: 810; ML: 1150; MW: 660; PEW: 360; PEH: 365; NOH: 220; NOL: 230; PEL: 225; PPW: 415; PPL: 230; PPH: 355; SPL: 135; SPSP: 230.