Lionothus bidentatus Peck and Cook, 2013

Peck, Stewart B. & Cook, Joyce, 2013, Systematics and distributions of the genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, and Zeadolopus Broun of the United States and Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini), Insecta Mundi 2013 (310), pp. 1-32 : 16-17

Lionothus bidentatus Peck and Cook , new species

( Fig. 9 , 22 )

Description. Length (pronotum + elytra) = 1.80–2.08 mm; greatest width = 1.16–1.44 mm. Reddish brown, shiny. Head punctures fine medially, moderately coarse on vertex, irregularly spaced. Antennal grooves not well defined. Mandibles short, forming semicircle when closed; two teeth at apical one-third of left mandible. Antennal club slender; antennomere 8 disc-like, distinctly narrower than apex of 7; apical antennomere slightly narrower than 9 and 10. Eyes of normal size. Pronotum broad, sides rounded, posterior angles roundly obtuse, basal margin rounded. Pronotal punctures minute and sparse. Elytral strial punctures round and deep, smaller near base, variably separated; interstrial punctures minute and sparse. Metasternum with fine punctures medially; coarse, unevenly spaced punctures laterally. Male mesofemur unmodified. Male mesotibia weakly concave on inner margin. Abdominal sternites III–VII each with basal transverse row of large punctures. Median lobe of aedeagus ( Fig. 9 ) cylindrical, strongly curved dorsoventrally; apical one-third progressively flattened to apex; paired apices broad and flat. Parameres narrow, each bearing two apical setae, not reaching apex of median lobe. Internal sac as in Fig. 9 .

Type material. Holotype, male, in TAMU, with label data: “ UNITED STATES: TEXAS: Bell Co. / 1 km W Youngsport, FIT/ Bowmer Rch., Lampasas Riv./ 30.96197°N. 97.72903°W/ IV-10–21-2010, T. Robbins ”.

Paratypes, 71, as follows: 20, same data as holotype (10, TAMU; 10, SBPC) ; “ UNITED STATES Texas Brewster Co. / Big Bend National Park / Maple Cyn. 5200’/ 9.VII.82 G.A.P. Gibson ” (2, SBPC) ; same data except: “30.VI–9.VII.82/ pan trap ” (2, SBPC) ; “ UNITED STATES: TEXAS: Hays Co. / 6mi NW Dripping Springs / 30°13.589’N, 98°11.096’W/ X-3–30-2005, FIT-ground/ 1,340’, E.G. Riley et al.-119/ Juniperus unmanaged plot” (2, TAMU) ; same data except: “ VI-3–30-2005 / 418/ Juniperus managed plot” (1, TAMU) ; same data except: “ III-31–IV-26-2006 / 340” (2, TAMU) ; same data except: “ IV-28–VI- 2-2006 / 379/ Juniperus managed plot” (7, TAMU) ; same data except: “30°13.554’N, 98°11.039’W/ III- 31–IV-27-2006 / 353” (5, TAMU) ; same data except: “ IV-28–VI-2-2006 / 392/.Juniperus unmanaged plot” (5, TAMU) ; “ UNITED STATES: TEXAS: Kerr Co. / 6.5 mi SW Hunt , 1960’/ 29°59.409’N, 99°23.244’W/ IV-28–VI-2.2006, FIT-grd./ E.G. Riley, et al.405/ upland deciduous forest” (7, TAMU) ; same data except: “ IX-2–X-5-2006 / 561” ( TAMU) ; 5, same data except: “ VI-3–30-2006 / 444” (9, TAMU) ; same data except: “ X-27–XI-11-2005 / 171” (1, TAMU) ; same data except “ III-31–IV-27-2006 / 366” ( TAMU) ; 1, “ TEXAS: Wood Co. / Godwin Woods, 3.5 mi. SW/ Hainsville , V-29–VI-27-2000 / 32°42’30”N, 95°24’36”W/ Coll. Wm. Godwin, FIT” (2, TAMU) ;, “ OKLAHOMA:/ Latimer Co. / XI.2002 / K. Stephan ” (1, TAMU) ; same data except “ XII.2002 ” (1, TAMU) .

Distribution. The species is known only from Oklahoma and Texas in the United States ( Fig. 22 ).

Seasonality. Adults have been collected from April to December, mostly in the months of April and May.

Bionomics. Adults have been collected mostly in scrub and juniper thickets, and in upland mixed forest.

Etymology. The epithet “ bidentatus ” refers to the double teeth on the left mandible of this species.

Figures

Figure 22. North American distribution of Lionothus bidentatus (black circles), L. exiguus (black triangles), L. parvoculus (black squares).

Figures 7–15. Aedeagi, dorsal, of Lionothus species. 7) L. ulkei. 8) L. forticornis. 9) L. bidentatus. 10) L. exiguus. 11) L. parvoculus. Scale line = 0.3 mm for L. ulkei, L. exiguus; 0.4 mm for L. forticornis, L. bidentatus, L. parvoculus. Aedeagi, dorsal, of Zeadolopus species. 12) Z. egenus. 13) Z. bifoveolatus. 14) Z. oklahomensis. 15) Z. rubricornis. Scale line = 0.3 mm.