Dissochaetus sanctalucia Peck and Cook, 2014

Peck, Stewart B. & Cook, Joyce, 2014, A review of the small carrion beetles and the round fungus beetles of the West Indies (Coleoptera: Leiodidae), with descriptions of two new genera and 61 new species., Insecta Mundi 2014 (397), pp. 1-76 : 12-13

Dissochaetus sanctalucia Peck and Cook , new species

Figures 23, 24

Diagnostic description. Total length 2.0– 2.5 mm. Reddish brown; vertex of head and apical two-thirds of elytra darker. Elytra pruinose. Pubescence reddish yellow. Head finely, densely punctate. Antennae when laid back reaching beyond base of pronotum. Antennomeres VI-X wider than long. Eyes large. Pronotum granulate, transverse, widest at basal one-third; sides rounded, posterior angles obtuse. Elytral sides rounded, apices separately evenly rounded. Fully winged. Large metatibial spur longer than first metatarsal segment. Male first protarsal segment at least as wide as protibial apex. Median lobe of aedeagus ( Fig. 23 ) broad, apex drawn out and bearing a pair of lateral setae. Parameres ( Fig. 23 ) elongate, curved inward apically, with membranous apices, each bearing two apical setae. Inverted internal sac ( Fig. 23 ) with paired sclerotized structures. Male genital segment ( Fig. 24 ) longer than wide; sternite lobes prolonged apically and each bearing several setae medially and apically; pleurite lobes not divided, bearing several setae apically.

Type material. Holotype, male, with the following label data: “LESSER ANTILLES: St. Lucia / Mon Repos , 6.5 km W Fox Grove Inn / 12–16.VII.2007, submontane forest/ carrion traps, N13°52.5’ W60°56.4’ / 300m, S. & J. Peck, 07-59” ( SBPC) . Paratypes (61) have the following label data: same data as holotype (19, SBPC) ; same data except: 16-21.VII.2007, dung traps, 07-69 (9, SBPC) ; same data as holotype except: 10–28.VII.2007, malaises, 07-53A (3, SBPC) ; same data except: FITs, 07-53B (11, SBPC; 3, FSCA; 3, MCZC; 3, FMNH) ; ST. LUCIA, N. of Pass , 340m, Barre d’Isle Res., 13.93682°N, 60.95936°W, 29APR2009, on dead manicou, I.A. Foley colr. (9, WIBF) ; ST. LUCIA, Piton Troumasse trap site, 793m, 13.8535°N, 61.0098°W, 01–17JUNE2009, uv light, R.C. Winton & C.A. Maier (1, WIBF) .

Distribution. Known only from St. Lucia.

Etymology. The epithet sanctalucia refers to the Lesser Antilles island of Saint Lucia where this species occurs.

Figures

Figures 12–24. Male genitalic structures of Dissochaetus. 12) Aedeagus, dorsal view with everted internal sac, of D. cubensis (from Peck 1999). 13) Median lobe of aedeagus, dorsal view with inverted internal sac, of D. cubensis (from Peck 1999). 14) Genital segment, ventral view, of D. cubensis (from Peck 1999). 15) Aedeagus, dorsal view, of D. grenadensis. 16) Genital segment, ventral view, of D. grenadensis. 17) Genital segment, ventral view, of D. jamaicensis (from Peck 1972). 18) Aedeagus, dorsal view, of D. jamaicensis (from Peck 1972). 19) Genital segment, ventral view, of D. portoricensis. 20) Aedeagus, dorsal view, of D. portoricensis. 21) Aedeagus, dorsal view, of D. smithi. 22) Genital segment, ventral view, of D. smithi. 23) Aedeagus, dorsal view, of D. sanctalucia. 24) Genital segment, ventral view, of D. sanctalucia. Scale line = 0.30 mm, Fig. 17-20; 0.35 mm, Fig. 15, 16, 21, 22; 0.40 mm, Fig. 12-14, 23, 24.