Cylindronotus gibbosus (Seidlitz, 1986)

Nabozhenko, Maxim, 2015, Review of the Genus Cylindrinotus Faldermann, 1837 (Coleoptera: Tenebrionidae: Helopini), The Coleopterists Bulletin (mo 14) 69, pp. 101-114 : 111-112

Cylindronotus gibbosus (Seidlitz, 1986)

( Figs. 6 , 10 , 18, 19 , 42, 43 , 56, 57 , 73, 74 )

Helops (Cylindrinotus) gibbosus Seidlitz 1896: 721 ; Reitter 1922: 125 ( Cylindronotus ). Holotype female at MNHP, labeled “416//Caucasus// Helops gibbosus// gibbosus = gibbicollis All. ”.

Material Examined. TURKEY: 1♀: Gümüşane Province, pass N Şiran (northern slope), 1600–2100 m, 28.iii.1973, leg. W. Heinz ( SNMS) ; 1♀: Gümüşane Province, Kankanlı Zigana pass, 1800 m, N 40°40′, E 39°15′, 23.v. – 18.vi.1975, leg. H. and U. Aspöck, H. and R. Rausch, P. Ressl ( HNHM) ; 2♂♂: Trabzon Province, Maçka District, near Sumela Manastırı , 18–20.iv.2009, leg. M.V. and S.V. Nabozhenko ( CN) .

Redescription. Male. Body black, shiny, slen- der. Body length 10.2 mm, width 4.2 mm. Head: Widest across eyes. Eyes weakly convex. Head width 1.6 times width of interocular space. Genae weakly rounded at base and straight to frontoclypeus. Outer margin of head between gena and frontoclypeus without sinuation. Frontoclypeal suture very weakly depressed. Temples behind eyes not constricted, regularly rounded. Punctation of head moderately dense, coarse (puncture diameter 2 times as long as distance between them); punctation of frons finer. Antennae moderately long, with 3 apical antennomeres extending beyond base of pronotum. Pronotum: Transverse, widest after middle, narrowed from base to anterior level, 1.5 times as wide as long, 1.7 times as wide as head. Lateral margins weakly rounded, sinuate in middle and near base. Anterior margin widely emarginated; base bisinuate. Anterior angles strongly protruding, acute apically; posterior angles straight. All margins beaded, lateral margins with thicker bead posteriorly. Disc moderately convex, lateral sides visibly flattened in basal half. Punctation of disc moderately coarse and not dense in middle (distance between punctures 2 times as long as diameter of punctures), coarse and dense on sides (puncture diameter 2 times distance between punctures). Outer sides of prothoracic hypomera flattened in basal half, with fine, irregular wrinkles near outer margins and longitudinal, coarse wrinkles over rest surface, with distinct punctures between wrinkles. Elytra: Elongate, oval, 1.5 times as long as wide, 1.2 times as wide and 2.8 times as long as pronotum, 2 times as wide as head. Strial punctures not merged at middle but merged in furrows apically. Punctation of interstriae fine and sparse, distinct. Venter: Prosternal process weakly convex, without cone-shaped tooth apically. Mesepimera and metepisterna with coarse, sparse punctation, metaventrite with fine, sparse punctation. Abdominal ventrites with finer punctation and wrinkles laterally; ventrite 5 not beaded apically; ventrite 1 with small hair brush in middle, ventrite 2 with smaller hair brush. Protrochanters with 3 long setae, meso- and metatrochanters with 1 long and several short setae. Legs: Protibia with 5–7 teeth, mesotibiae with 3 small teeth. Protarsus weakly widened, mesotarsus not widened.

Female (Holotype). Body black, robust, head and pronotum shiny, elytra dull. Body length 11 mm, width 5 mm. Head width 1.4 times width of interocular space. Antennae short, with 2 apical antennomeres extending beyond base of pronotum. Pronotum 1.8 times as wide as head. Ratio of pronotal width at base, greatest width, and width at anterior margin 8.0: 8.3: 5.1, respectively. Elytra convex, widest at middle, 1.3 times as wide as pronotum. Strial punctures in fine dotted lines. Interstriae with very fine, sparse punctation and microwrinkles. Epipleura weakly depressed. Abdominal ventrites without hair brush, with moderately dense, fine punctation and fine, longitudinal wrinkles on sides.

Distribution. Northeastern Turkey.

Bionomics. Males from Sumela were found in a wet meadow under stone.

Notes. Seidlitz (1896) considered C. gibbicollis sensu Allard (1876, 1877 ) as his species C. gibbosus , but he did not include Allard’ s material in the type series. I do not support this opinion before studying Allard’ s non-type material.

Figures

Figs. 1–8. Cylindrinotus species, head. 1, 2) C. gibbicollis; 3, 4) C. erivanus; 5) C. constrictus; 6) C. gibbosus;

Figs. 9–10. Cylindrinotus species, pronotum. 9) C. nitidus, male, lectotype; 10) C. gibbosus, female, holotype.

Figs. 11–27. Cylindrinotus species, legs. 11, 12) C. femoratus, male, metatibia; 13, 14) C. femoratus, male, meso- and protibiae, respectively; 15–17) C. acutangulus, male, meta-, meso-, and protibiae, respectively; 18, 19) C. gibbosus, male, meso- and protibiae, respectively; 20, 21) C. constrictus, protibia, male and female, respectively; 22, 23) C. erivanus, protibia, male and female, respectively; 24, 25) C. constrictus, male, pro- and mesotarsi, respectively; 26, 27) C. charlesi, male, pro- and mesotarsi, respectively.

Figs. 28–45. Cylindrinotus species, aedeagus. 28, 29) C. femoratus; 30, 31) C. acutangulus; 32, 33) C. nitidus; 34, 35) C. batesi; 36, 37) C. gibbicollis; 38, 39) C. erivanus; 40, 41) C. constrictus; 42, 43) C. gibbosus; 44, 45) C. charlesi. Even numbered figures = ventral view; odd numbered figures = lateral view.

Figs. 46–59. Cylindrinotus species, gastral spicula. 46, 47) C. femoratus; 48, 49) C. acutangulus; 50, 51) C. batesi; 52, 53) C. erivanus; 54, 55) C. constrictus; 56, 57) C. gibbosus; 58, 59) C. charlesi. Even numbered figures = ventral view; odd numbered figures = lateral view.

Figs. 68–77. Cylindrinotus species, habitus. 68) C. gibbicollis, male; 69) C. gibbicollis, female; 70) C. erivanus, female; 71) C. constrictus, male; 72) C. constrictus, female; 73) C. gibbosus, male; 74) C. gibbosus, female, holotype; 75) C. gibbosus, head and anterior part of pronotum; 76) C. charlesi, male, Palandöken Dağları; 77) C. charlesi, female.