Lycomorphon nitidum ( Pic, 1926 )

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

Lycomorphon nitidum ( Pic, 1926)

( Figs. 7 , 12 , 29–31 )

Idiopteron (Lycomorphon) nitidum Pic, 1926: 30 .

Holotype, male, COLOMBIA: ‘Carmen’ ( MNHN). Other material: male, COLOMBIA: ‘S Antonio’ ( MNHN).

Diagnosis. Each elytron only with 3 longitudinal costae, costa 3 entirely absent, reticulate cells largely rectangular, regular. Phallus straight, paramerae slightly longer than half of phallus length.

Redescription. Interocular distance 1.4 times longer than eye diameter. Antennae almost filiform, antennomere 3 slightly longer than half of 4 ( Fig. 12 ). Mandibles reduced, almost hooked. Pronotum trapezoidal, dark brown, with simple carina in anterior half and longitudinal groove in posterior half. Anterior thoracic spiracles short, tubular. Elytra elongate, convergent in apical third, dark brown with yellow macula in posterior ¾, separated from sutural costae. Each elytron with 3 strong longitudinal costae, costa 3 entirely absent, costa 1 missing apically, reticulate cells regular, largely rectangular. Abdominal sternum 8 with rounded emargination distally. Sternum 9 elongate, rounded proximally, triangular distally ( Fig. 7 ). Phallus straight, teary orifice in distal half of phallus. Paramerae slightly longer than half of phallus length, rounded apically in lateral and ventral views. Phallobase almost transversal ( Figs. 29–31 ). Body length: 5.5–6.2 mm, humeral width: 1.2–1.4 mm.

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.