Gracilivectura pygidialis, 2024

Mayor, Adriean J. & Gimmel, Matthew L., 2024, Two New Genera and Three New Species of Dasytinae (Coleoptera: Melyridae) from the Southwestern United States and Mesoamerica, The Coleopterists Bulletin 78 (1), pp. 33-52 : 48

GRACILIVECTURA

1. Setae relatively sparse, not obscuring color of cuticle dorsally ( Figs. 38, 41 ); male pygidium ( Figs. 38 , 55 ) deeply emarginate; male metatibia distinctly narrowed in apical half ( Fig. 49 )................. G. pygidialis Mayor and Gimmel , new species

1′. Setae dense, mostly obscuring cuticle color dorsally ( Fig. 44 ); male pygidium ( Fig. 60 ) not emarginate; male metatibia parallel-sided in apical half ( Fig. 45 )............ G. mojavensis Mayor and Gimmel , new species

Figures

Figs. 38–43. Gracilivectura pygidialis, new genus and species, habitus (1.5 miles E of Mountain Springs Rd., Imperial Co., CA; SBMNH). Male: 38) Dorsal (inset is dorso-posterior view showing apex of pygidium); 39) Lateral; 40) Frontal. Female: 41) Dorsal; 42) Lateral; 43) Frontal. Scale bars = 1.0 mm.

Figs. 55–64. Male terminalia of species of Gracilivectura, new genus. G. pygidialis, new species, holotype: 55) Pygidium; 56) Sternite VIII; 57) Spiculum gastrale; 58) Aedeagus, dorsal; 59) Aedeagus, lateral. G. mojavensis, new species, holotype: 60) Pygidium; 61) Sternite VIII; 62) Spiculum gastrale; 63) Aedeagus, dorsal; 64) Aedeagus, lateral. Scale bars = 0.2 mm.

Figs. 47–52. Gracilivectura pygidialis, new genus and species, anterior view of male right legs and base of tarsus (1.5 miles E of Mountain Springs Rd., Imperial Co., CA; SBMNH). 47) Front leg; 48) Middle leg; 49) Hind leg; 50) Protibial apex and base of protarsus; 51) Mesotibial apex and base of mesotarsus; 52) Metatibial apex and base of metatarsus. Scale bars for 47–49 = 0.5 mm; for 50–52 = 0.1 mm.

Figs. 44–46. Gracilivectura mojavensis, new genus and species, male holotype, habitus. 44) Dorsal; 45) Lateral;