A Review of Subtribe Cymindidina Laporte, 1834 (Coleoptera: Carabidae: Lebiini) in Southwestern Saudi Arabia, with Descriptions of Two New Species
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Zootaxa 4236 (1): 157–171 ISSN 1175-5326 (print edition) http://www.mapress.com/j/zt/ Article ZOOTAXA Copyright © 2017 Magnolia Press ISSN 1175-5334 (online edition) https://doi.org/10.11646/zootaxa.4236.1.9 http://zoobank.org/urn:lsid:zoobank.org:pub:26A191C8-6F05-4847-B1B7-0A526C127EEA A review of subtribe Cymindidina Laporte, 1834 (Coleoptera: Carabidae: Lebiini) in Southwestern Saudi Arabia, with descriptions of two new species IFTEKHAR RASOOL1, RON F.F.L. FELIX2, MAHMOUD S. ABDEL-DAYEM1,3 & HATHAL M. ALDHAFER1 1King Saud University Museum of Arthropods (KSMA), Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460 Riyadh 11451, Saudi Arabia. E-mail: [email protected], [email protected] 2Naturalis Biodiversity Center Leiden, The Netherlands. E-mail: [email protected] 3Entomology Department, Faculty of Science, Cairo University, Giza 12613, Egypt. Email: [email protected] Abstract The carabid subtribe Cymindidina Laporte, 1834 is reviewed for the southwestern Saudi Arabia. Five species belonging to two genera (Afrotarus Jeannel, 1949 and Cymindis Latreille, 1806) are studied, including two species described as new: A. fadli sp. n. from Baha Province and A. soudaensis sp. n. from Asir Province. A key to genera and species of Saudi Arabia is given. Key words: Coleoptera, Carabidae, Lebiini, Cymindidina, Afrotarus, Cymindis, new species, Saudi Arabia Introduction The Lebiini is a specious carabid tribe with about 891 described species in 86 genera and 17 subtribes known from the Palaearctic region (Kabak 2003), but only 62 species have been recorded from the entire Arabian Peninsula, 43 of these species occur in Saudi Arabia (Mateu 1979, 1986, 1990; Kabak 2003; Felix 2009, 2014; Felix et al., 2012). The subtribe Cymindidina Laporte, 1834 contains about 315 species (Lorenz 2005) with Cymindis Latreille, 1806 as the largest genus with more than 220 taxa. The species of this subtribe are distributed in Afrotropical, Nearctic, Neotropical, Oriental and Palaearctic regions (Bousquet 2012). They are currently classified in eleven genera of which only Afrotarus Jeannel, 1949 and Cymindis Latreille, 1806 have been recorded from Saudi Arabia (Basilewsky 1979; Mateu 1986). Members of the subtribe Cymindidina can be recognized by base of pronotum weakly incised or straight; in some genera ultimate segment of labial palpi in males dilated; fourth tarsal segment not incised; claws sparsely dentate except for some species of subgenus Iscariotes Reiche & Saulcy 1855. The present paper is aimed to provide description of two new species and a key to genera and species that occurr in Saudi Arabia. It also includes illustrations of habitus and main diagnostic characters of the species. Material and method This work is based on fresh adult beetles collected from different localities of southwestern Saudi Arabia (Asir, Baha and Jizan provinces) and deposited materials in the following collections, identified in the text by the following associated acronyms: BMNH British Museum of Natural History, London, UK. KSMA King Saud University Museum of Arthropods, Riyadh, Saudi Arabia. MNHN Musée national d’Histoire naturelle, Paris, France. MRCA Royal Museum for Central Africa, Tervuren, Belgium. NHMB Natural History Museum Basel, Switzerland. RMNH Naturalis Biodiversity Centre (formerly Rijksmuseum van Natuurlijke Historie), Leiden, Netherlands. Accepted by J. Serrano: 14 Dec. 2016; published: 22 Feb. 2017 157 Dissection. The male beetles are dissected using standard techniques. For old specimens, adults were boiled in water for 2–3 minutes for dissection. Genitalia were boiled in 70% KOH after dissection and cleared in Clove oil for 24 hours. After examination, genitalia were preserved in transparent micro–tubes filled with 70% ethanol and pinned beneath the specimens. Illustrations. Photographs of habitus, male genitalia and other diagnostic features were taken using Q– imaging Micro Publisher 5.0 RTV mounted on a LEICA MZ125 trinocular stereomicroscope and stacked images were combined using Zerene Stacker 1.04 (Innovative Solutions, Bucharest, Romania). FEI Inspect S50 model (at Soil Science Department, College of Agriculture and Food Sciences, King Saud University) was used to produce scanning electron microscope (SEM) photos. Measurements. The following parameters were measured using an ocular micrometer in a stereo-binocular microscope: Total body length (TBL): measured from apex of labrum up to the end of abdomen along the mid-line of head, pronotum, and suture of elytra. Length of head (HL): linear distance from apex of labrum to anterior margin of pronotum. Width of head (HW): maximum distance across head including eyes. Length of pronotum (PL): linear distance along mid-line from anterior to posterior margin. Width of pronotum (PW): greatest transverse distance. Length of elytra (EL): linear distance from base of scutellum up to apex of elytra along suture. Width of elytra (WE): greatest linear transverse distance across elytra. Length of aedeagus (AL): measured from base to apex. Data from locality labels are cited verbatim for the type specimens of the newly described species, with label breaks indicated by a slash (“/”). Classification of Taglianti et al. (1999) was followed with some modifications for chorotype identification of each species. The synonyms were cited mainly from Kabak (2003) in the Catalogue of Palaearctic Coleoptera, and Bousquet (2012). Terms used to designate details of structural characters of species are found in Lindroth (1974), Ball & Hilchie (1983) and Basilewsky (1962, 1968, 1979). Key to genera and species of subtribe Cymindidina of the Saudi Arabia 1. Last labial palpomeres in males not strongly dilated and truncate at apex (Fig. 3). Head with two nearly straight ridges near eyes (near clypeus there can be some shallow wrinkles) (Fig. 1) . Afrotarus ...2 - Last labial palpomeres in males strongly dilated and strongly truncate at apex (Fig. 4). Head with two or more rather irregular ridges near eyes, branched (also here some wrinkles near clypeus) (Fig. 2). Cymindis and Arrhostus... 4 2. Setae at hind angles of pronotum present; sides of pronotum slightly sinuate, hind angles small but distinct (Fig. 11); aedeagus not distinctly hooked at apex (Fig. 17) . A. scotti (Basilewsky, 1948) - Setae at hind angles of pronotum absent; sides of pronotum barely sinuate, hind angles broadly rounded (Figs. 5, 6, 9, 10); aedeagus hooked at apex (Figs. 15, 16). 3 3. Pronotum not transverse (Fig. 5); elytra with dense pubescence, the latter denser and long laterally (Fig. 7). A. fadli sp. n. - Pronotum slightly transverse (Fig. 6); elytra with scattered and rather short pubescence laterally (Fig. 8). A. soudaensis sp. n. 4. Pronotum (Fig. 13) almost completely rounded laterally and basally, except for the tiny posterior angles, marginal gutter of pronotum very wide; eyes rather flat; temples long; elytral dark markings along the suture tridental, covering intervals I–IV (or only half of IV); elytral base with scutellar spot of four intervals wide, sometimes scutellar spot and the outer stripes are con- nected, surrounding a light area, interval VII in apical half dark, this stripe longly narrowed and pointed, backwards almost reaching to the end of the dark part near the suture; male genitalia in lateral view gently curved, apical third strongly narrowed (horn like tip) (Fig. 18) . Cymindis (s. str.) laevistriata Lucas, 1846 - Pronotum much less rounded, more straightly narrowed towards base (Figs. 12, 14), marginal gutter of pronotum narrower; eyes much more protruding; elytral dark markings either strongly reduced or much more extended (Figs. 24, 25) . 5 5. Pronotum wider than head, its sides straight before hind angles (Fig. 14), marginal gutter of pronotum wider; eyes less protrud- ing (Fig. 14); elytral dark markings along suture absent or, at most, covering intervals I–II and then barely tridental; marking on interval VII very narrow or absent, scutellar spot absent (Fig. 25).. Cymindis (s. str.) suturalis Dejean, 1825 - Pronotum as wide as head or narrower, sides sinuate before hind angles (Fig. 12), marginal gutter of pronotum very narrow; eyes much more protruding; elytral dark markings strongly extended, on intervals I–VII, marking on interval VII toward apex wide, also the dent on intervals III–IV towards base very short and blunt (Fig. 24), scutellar area with dark marking of four intervals wide . Cymindis (Arrhostus) andreae Ménétriés, 1832 158 · Zootaxa 4236 (1) © 2017 Magnolia Press RASOOL ET AL. Species treatment Afrotarus Jeannel, 1949 Afrotarus is a polytypic genus of Cymindidina, comprising six described species distributed in East Africa, Arabia and Israel (Bousquet 2012). Ball and Hichlie (1983) treated Afrotarus as a subgenus of Cymindis, but later on in Bousquet (2012) Afrotarus is a separate genus. Afrotarus species are very similar to some members of genus Cymindis but can be differentiated from the South Arabian species of the latter by two supraorbital ridges not branched and last labial palpomeres weakly dilated at apex. From the Arabian Peninsula only Afrotarus scotti is known, which was described from Yemen by Basilewsky (1948) and then reported from Saudi Arabia (Mateu 1986). Although the holotype of A. scotti was not found, a paratype specimen from MRCA was examined and compared with Saudi materials preserved in the BMNH, which was identified by Mateu and recently collected during this work. Based on this, the Saudi specimens apparently similar to A. scotti paratype, are designated here as A. soudaensis sp. n. and A. fadli sp. n. Afrotarus fadli Rasool, Felix & Abdel-Dayem sp. n. Type material. Total 12 specimens: HOLOTYPE, 1 ♂ in KSMA, point-mounted, labeled: “KSA, Baha, Biljurashi, Al Qumma, N19°48.042' E41°41.978' Alt. 1963 m, 9.XII.2014, (HP), H.H. Fadl, M.S. Abdel-Dayem, A. Elgarbawy & I. Rasool” / “Holotype Afrotarus fadli sp. n.; det. I. Rasool, R.F.F.L. Felix, & M.S. Abdel-Dayem, 2015” [red label]. Paratypes: Total 11 specimens, sex and label data as follows. 1 ♂ 7 ♀, same as holotype”. 1 ♀, same as holotype except “Biljurashi, Bani Kabir, N19°56.671' E41°32.145' Alt.