Lycomorphon opacum ( Pic, 1926 )

Nascimento, Elynton Alves Do & Bocakova, Milada, 2009, A revision of the genus Lycomorphon (Coleoptera: Lycidae), Zootaxa 2132, pp. 40-52 : 47

Lycomorphon opacum ( Pic, 1926)

( Figs. 2, 8, 9 , 11 , 26–28 )

Idiopteron (Lycomorphon) opacum Pic, 1926: 30 .

Holotype, male, PERU: ‘Carmen’ ( MNHN).

Diagnosis. Elytra black with yellow transverse stripe in apical third. Each elytron with 4 costae, costa 3 present only in median third. Sutural costae considerably convergent in apical third. Abdominal sternum 9 triangular proximally. Paramerae half as long as phallus.

Redescription. Interocular distance 1.5 times longer than eye diameter. Antennomere 3 as long as 4 ( Fig. 11 ). Mandibles strongly reduced, maxillary palpi short, all palpomeres of same length. Pronotum trapezoidal, black, with simple carina in anterior half and slender longitudinal groove in posterior half ( Fig. 2 ). Anterior thoracic spiracles short, tubular. Elytra black with yellow transverse stripe in apical third, sutural costae considerably convergent in apical third ( Fig. 9 ). Each elytron with 3 strong costae, costa 3 considerably weakened, absent in basal and apical thirds, reticulate cells largely rectangular, irregular. Abdominal sternum 8 provided with rounded emargination distally, sternum 9 elongate, triangular proximally and rounded distally ( Fig. 8 ). Male genitalia with distal portion of phallus slightly curved dorsally, teary orifice in terminal half of phallus. Paramerae reaching phallus midlength, rounded apically in lateral and ventral views ( Figs. 26–28 ). Body length: 7.5 mm, humeral width: 1.5 mm.

Distribution: Peru

Figures

FIGURES 1 – 9. (1 – 3) Pronotum in dorsal view: (1) Lycomorphon diversicolle; (2) L. opacum; (3) L. brasiliense. (4 – 6) Abdominal sternum 8: (4) L. bimaculatum; (5) L. bolivianum; (6) L. irregularis. (7 – 8) Terminal abdominal segments in ventral view: (7) L. nitidum; (8) L. opacum. (9) elytron of L. opacum. Scales 0.5 mm.

FIGURES 10 – 19. Basal antennomeres: (10) Lycomorphon elongaticolle; (11) L. opacum; (12) L. nitidum; (13) L. diversicolle; (14) L. bimaculatum; (15) L. fulvohumaralis; (16) L. amazonicum; (17) L. brasiliense; (18) L. bolivianum; (19) L. irregularis. Scales 0.5 mm.

FIGURES 20 – 37. Male genitalia: (20 – 22) Lycomorphon elongaticolle; (23 – 25) L. angusticolle; (26 – 28) L. opacum; (29 – 31) L. nitidum; (32 – 34) L. diversicolle; (35 – 37) L. bimaculatum. (20, 23, 26, 29, 32, 35) ventral view; (21, 24, 27, 30, 33, 36) dorsal view; (22, 25, 28, 31, 34, 37) lateral view. Scales 0.5 mm.