A second species of Lucanobium Howden and Lawrence from South America (Coleoptera: Lucanidae: Aesalinae) Paulsen, M. J. Insecta Mundi 2011 2011-04-15 2011 171 1 3 6QPC5 Paulsen Paulsen 2011 [192,628,1160,1185] Insecta Lucanidae Lucanobium Animalia Coleoptera 3 2 Arthropoda species guianense sp. nov.   Type specimens.  Holotypemale ( FSCA) labeled: a) “ FRENCH GUIANA: / Amazone Nature Lodge/  30 kmSE Rouraon / Kaw Rd.  5-19-II-2010/ J. E. Eger, coll.,  300 m”; b) “ N04 o33.570’/ W052 o12.433’/ UVLight Trap”; c) on red paper, “  Lucanobium guianense/ Paulsen [male symbol] / HOLOTYPE”.  Allotypefemale ( FSCA) labeled: a) “ FRENCH GUIANA: Ama- / zone Nature Lodge, 30 / km SE Roura on Kaw / Rd.  10-18-IV-2007, D / G Hall & J E Eger, coll.”; b) “ N04 o34.135’/ W052 o11.150’/  227m MVLight”; c) on red paper, “  Lucanobium guianense/ Paulsen [female symbol] / ALLOTYPE”. Female paratype(in the collection of the author) labeled: a) FRENCH GUIANA: 28 / km SE Rouraon Kaw / Rd.,  17-II-2010, J. E./ Eger, coll., MVLight”; b) “ N040 o34.252’/ W052 o12.797’;  306 melev.”; c) on yellow paper, “  Lucanobium guianense/ Paulsen [female symbol] / PARATYPE”. Female paratype( FSCA) labeled: a) “ FRENCH GUIANA: 27 / km SE Roura on Kaw / Rd.  21-IV-2007, J. E. / Eger, coll. MVLight”, b) “[female symbol]”; c) as preceding paratype.   Holotypedescription. Length: 4.2 mm.  Width: 2.9 mm.  Color/Vestiture:Surface dark brown, mostly obscured by flat, disc-like whitish or tan scales and erect, dark and light brown scale-like bristles.  Head:Surface as in  L. squamosum.Mentum rectangular, elongate (distinctly wider than long). Base of maxilla (stipes/cardo) distinctly protruding from beneath mentum.  Pronotum:Form half as long as wide, moderately convex. Posterior margin bisinuate, anterior angles acute. Surface covered with disk-like scales and scattered, erect bristles; middle with transverse band of 4 poorly-defined clumps of dark bristles.  Elytra:Surface as in  L. squamosum,but overall scale and bristle color darker.  Legs:Apex of metatibia not tumid in ventral view.  Male genitalia:Aedeagus with basal piece and parameres fused to median lobe; basal piece and parameres short, parameres about 1/10 as long as median lobe. Median lobe strongly curved ( Fig. 3), not expanded or sclerotized at apex as in  L. squamosum( Fig. 4).   Variation.Female allotypeand paratypesdiffer in the following characters.  Length: 3.5-4.2 mm.  Width: 2.5-2.9 mm.  Head:Mentum not elongate (about as wide as long). Base of maxilla (stipes/cardo) not as large and protuberant as in male.  Pronotum:Transverse clumps of scales more defined.  Legs:Apex of metatibia tumidly produced ventrally.  Female genitalia:Dissection of the female genitalia will be completed by Hao Huang ( Shanghai, China) for his detailed morphological study of aesaline genera that is currently in progress.   Diagnosis.This species is recognizable due to its distinct male genitalia and smaller overall size, as well as its disparate geographic distribution. The parameres of the male genitalia are broader, and short (only about 1/10 thas long as the median lobe). The median lobe is more strongly curved and not inflated at the apex as in that of  L. squamosum.   Etymology.The species is named for the geographic origin of the specimens, French Guiana, and the epithet is neuter in gender. 2010-02-05 2010-02-19 2010-02-05 FSCA, UV J. E. Eger French Guiana 300 4.5594997 Amazone Nature Lodge 1 -52.20722 Kaw Rd. 3 2 2 holotype 2007-04-10 2010-02-17 2007-04-10 FSCA, MV J E Eger & SE Roura & Eger French Guiana 227 4.568917 Roura on Kaw 1 -52.185833 3 2 6 allotype