Tetramorium saudicum Sharaf 2013
Creators: name: Radchenko, A. G.
name: Scupola, A.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Tetramorium
Tetramorium saudicum

description: <i>Tetramorium saudicum</i> Sharaf, 2013 <i>Tetramorium saudicum</i> Sharaf, 2013: 574, workers, Saudi Arabia (in Sharaf et al., 2013). M a t e r i a l e x a m i n e d. Paratypes, 3 workers, “ Saudi Arabia, Rawdhat Khorim, 25-22-986 N, 47-16-712 E, 559 m, 24.II.2012, HP (A) No. 0067” (nest of holotype) (SIZK). Measurements of workers (in mm; n = 3), ordered as: min-max: HL 0.80–0.81, HW 0.78–0.78, FW 0.32–0.33, FLW 0.36–0.37, OL 0.20–0.21, GnL 0.19–0.21, SL 0.61–0.62, ML 0.96–0.99, PNW 0.52–0.52, PL 0.33–0.33, PW 0.24–0.25, PH 0.26–0.28, PndL 0.20–0.21, PPL 0.21–0.22, PPW 0.28–0.30, PPH 0.21–0.23, ESL 0.10-0.13, ESD 0.21–0.22, HTL 0.55– 0.56. Indices: CI 1.03–1.04, SI 1 0.74–0.77, SI 2 0.77–0.79, FI 0.41–0.42, FLI 1.12–1.13, OI 1 0.25–0.27, OI 2 1.00–1.06, PI 1 1.20–1.24, PI 2 0.31–0.32, PndI 1.16–1.22, PPI 1 0.76–0.80, PPI 2 0.35–0.38, ESLI 0.13–0.17. For some more measurements see Sharaf et al. (2013). T a x o n o m i c n o t e s. <i>T. saudicum</i> the most resembles <i>T. sabatinellii</i> and differs from it by some morphometrics features (see Note to the latter species and Key). <b>A key to species of <i>Tetramorium striativentre</i> species group (workers and queens 1)</b> 1. Whole surface of first gastral tergite densely longitudinally striato-punctated (fig. 1, d; 2, c; 6, d; 7, b; 10, d; 11, e)..................................................................................................................................................................2 – Only basal half of first gastral tergite densely longitudinally striato-punctated, remainder part of tergite smooth and shiny or at most with fine superficial microreticulation (fig. 5, d; 14, d; 15, e)....................5 2(1). Frontal carinae not curved, gradually converging anteriorly, so that frontal lobes not extended laterally (FLI in workers 1.00–1.06, mean 1.01, in queens &lt;1.00, mean 0.96); longitudinal rugosity on head dorsum relatively fine, number of rugae between frontal carinae level with the eyes&gt; 15 (mean in workers 18, in queens — 21) (fig. 6, c; 7, c). Petiolar node transversal (mean PndI in workers 1.34, in queens — 1.78); both petiolar node dorsum and postpetiolar dorsum with regular longitudinally-concentric rugae (fig. 6, b; 7, b). Propodeum with short denticles (mean ESLI in workers 0.10, in queens — 0.08) (fig. 6, a; 7, a)................................................................................................................................... <i>T. striativentre</i> Mayr – Frontal carinae curved above antennal insertions, frontal lobes distinctly extended (FLI ≥ 1.08, means in workers 1.12 … 1.17, in queens 1.09 … 1.15); longitudinal rugosity on head dorsum various (fig. 1, c; 2, d; 10, c; 11, d). Petiolar node of various shape, petiolar node dorsum with sinuous longitudinal rugae, postpetiolar dorsum with longitudinal rugae (fig. 1, b; 2, e; 10, b; 11, c). Propodeum with longer teeth or even thin spines (means ESLI in workers 0.15 … 0.19, in queens 0.11 … 0.17) (fig. 1, a; 2, a; 10, a; 11, a)'............................................................................................................................................................................3 3(2). Petiolar node subcircle (mean PndI in workers 1.02, in queens — 1.40) (fig. 10, b; 11, c). Longitudinal rugosity on head dorsum relatively fine, number of rugae between frontal carinae level with the eyes&gt; 15 (mean 23) (fig. 10, c; 11, d)............................................................................................ <i>T. schneideri</i> Emery – Petiolar node transversal (means PndI in workers 1.20 … 1.35, in queen 1.40) (fig. 1, b; 2, e). Longitudinal rugosity on head dorsum coarser, number of rugae between frontal carinae level with the eyes &lt;15 (means 12 … 13) (fig. 1, c; 2, d)........................................................................................................................ 4 4(3). Scape somewhat shorter, mean SI1 0.75, SI2 0.78. Petiolar node somewhat narrower, mean PndI 1.20; postpetiole somewhat narrower, mean PPI1 0.77, mean PPI2 0.36. Gena only somewhat longer than maximal diameter of eye, mean OI2 1.04......................................................................... <i>T. saudicum</i> Sharaf – Scape somewhat longer, mean SI1 0.80, SI2 0.84. Petiolar node somewhat wider, mean PndI 1.35; postpetiole somewhat wider, mean PPI1 0.70, mean PPI2 0.39. Gena distinctly longer than maximal diameter of eye, mean OI2 1.10......................................................................................................... <i>T. sabatinellii</i> sp. n. 1 Queens of <i>T. pisarskii</i> and <i>T. saudicum</i> are unknown. 5(1). Mesosomal dorsum and waist dorsum with sinuous longitudinal rugae (fig. 14, b; 15, c). Longitudinal rugosity on head dorsum coarser, number of rugae between frontal carinae level with the eyes ≤ 15 (fig. 14, c; 15, d)........................................................................................................ <i>T. kabulistanicum</i> Pisarski – Mesosomal dorsum with more regular, almost straight longitudinal rugae, waist dorsum with regular longitudinally-concentric rugae (fig. 5, b). Longitudinal rugosity on head dorsum less coarse, number of rugae between frontal carinae level with the eyes ≥ 20 (fig. 5, c)................................ <i>T. pisarskii</i> sp. n. <b>A key to species of <i>Tetramorium striativentre</i> species group (males 2)</b> 1. Surface of first gastral tergite finely, but densely longitudinally striato-punctated (fig. 12, e). Petiole very long and low, PI1 2.00 (fig. 12, c)..................................................................................... <i>T. schneideri</i> Emery – Surface of first gastral tergite smooth and shiny (fig. 3, e; 8, b; 16, d). Petiole shorter and higher, PI1 &lt;1.70 (fig. 3, a; 8, a; 16, a).......................................................................................................................................2 2(1). Genae very short, OI2 6.50; petiole longer and lower, PI1 1.68 (fig. 3, a, d).............. <i>T. sabatinellii</i> sp. n. – Genae longer, OI2 &lt;5.50; petiole shorter and higher, PI1 &lt;1.50 (fig. 8, b, c; 16, a, c)..............................3 3(2). Petiole narrower and higher, PI1 &lt;1.30, PI2 ≤ 0.45; genae longer, OI2 &lt;4.20 (fig. 3, a–c). …………………................................................................................................................ <i>T. striativentre</i> Mayr – Petiole wider and lower, PI1&gt; 1.45, PI2&gt; 0.50; genae shorter, OI2&gt; 5.00 (fig. 16, a, c, e).............................................................................................................................................................. <i>T. kabulistanicum</i> Pisarski We are sincerely grateful to curators of the museum collection for the providing material for investigation: Elena Fedosseva (ZMMU), Fabrizio Rigato (MSNM), Mostafa Rezek Sharaf (Er-Riyadh), Mauro Daccordi (Verona) and Marco Uliana (MSNVE), and to Vladimir Radchenko (Kyiv), who made photos of the male genitalia of <i>T. striativentre</i>. Finally, particular thanks to Guido Sabatinelli (Amman) for his courtesy and assistance in the field researches in Jordan.
description: Published as part of <i>Radchenko, A. G. &amp; Scupola, A., 2015, Taxonomic Revision Of The Striativentre Species Group Of The Genus Tetramorium (Hymenoptera, Formicidae), pp. 219-244 in Vestnik Zoologii 49 (3)</i> on pages 240-241, DOI: 10.1515/vzoo-2015-0024, http://zenodo.org/record/6452367
description: {"references": ["Sharaf, M. R., Abdel-Dayem, M. S., Al Dhafer, H. M., Aldawood, A. S. The ants (Hymenoptera: Formicidae) of Rawdhat Khorim Nature Preserve, Saudi Arabia, with description of a new species of the genus Tetramorium Mayr. - Zootaxa. - 2013. - 3709, N 6. - P. 565 - 580."]}