Falsocaenia

Bocakova, Milada, Baciakova, Barbora & Nascimento, Elynton Alves Do, 2012, Revision of the genus Falsocaenia (Coleoptera: Lycidae), Zootaxa 3478, pp. 282-296 : 296

Key to species of the genus Falsocaenia

1. Elytra widened distally ( Figs 1–6 , 8, 10–14 )................................................................ 3

- Elytra slender, each elytron parallel-sided ( Figs 7, 9 )......................................................... 2

2. Transverse yellow stripe on elytra broad, present in posterior 1/2–4/5 of elytra........................... F. excavatipes

- Transverse yellow stripe on elytra slender, present in posterior 1/2–7/12 of elytra............................. F. grisea

3. Each elytron in posterior 1/3 twice wider than humeral width, parameres as long as 3/4 of phallus, reaching to apical phallic constriction ( Figs. 42–44 )..................................................................... F. meridana

- Elytra slenderer, up to 1.7x wider in posterior 1/3 than humeral width............................................ 4

4. Longitudinal and transverse elytral costae orange, inner cells dark brown ( Figs 14 ), distal portion of phallus slender, oval ( Fig. 66 )................................................................................. F. aurantiacocostata

- Elytral coloration forming unicoloured portions, distal enlargement of phallus almost circular......................... 5

5. Whole elytra orange, only basal sutural stripe slightly infuscate, distal enlargement of phallus circular ( Fig. 54 ).. F. d e c ip i e n s

- Elytra partly dark brown to black........................................................................ 6

6. Except paired yellow spots elytra dark brown............................................................... 7

- Yellow portions of elytra large, usually forming transverse or longitudinal stripes................................... 8

7. Only posterior spots in apical 1/6 of elytra yellow ( Fig. 6 ), distal enlargement of phallus circular, wider than parameres in posterior 1/3 ( Fig. 48 )...................................................................... F. melanopteron

- Most of elytra black, only humeral spots yellow ( Fig. 3 )........................................... F. ecuadorensis

8. Elytral apex yellow ( Figs 4, 5 )............................................................. F. longehumeralis

- Elytral apex dark brown to black......................................................................... 9

9. Parameres reaching apical 1/8 of phallus, elytra largely yellow, only basal 3/5 of suture, two transverse median spots, and apical 1/6 of elytra dark brown ( Fig. 2 ).......................................................... F. irregularis

- Parameres shorter.................................................................................... 10

10. Basal 3/5 of elytra largely yellow, only sutural region in basal quarter dark brown ( Fig. 10 ), male genitalia slender, distal enlargement circular ( Fig. 63 )................................................................... F. paranana

- Basal 3/5 of elytra with longitudinal black stripes ( Figs. 8, 11, 12 ).............................................. 11

11. Each elytron with a yellow transverse stripe behind elytral midlength.......................................... 12

- Each elytron with a longitudinal black stripe ( Fig. 11 )................................................ F. incognitus

12. Pronotum with whole lateral margins yellow, elytra with a transverse black stripe in basal 1/5–1/2 ( Fig. 8 ), distal enlargement of phallus circular to transversely oval ( Fig. 51 )................................................... F. apicicornis

- Yellow lateral margins of pronotum slender, each elytron with longitudinal yellow stripe along primary costa 3................................................................................................... F. diversecostata

Figures

FIGURES 1 – 6. Habitus photograph of: (1) Falsocaenia meridana; (2) F. irregularis; (3) F. ecuadorensis sp. nov.; (4) Holotype of F. callangana; (5) F. longehumeralis; (6) F. melanopteron sp. nov. Scales 1.0 mm.

FIGURES 7 – 12. Habitus photograph of: (7) Falsocaenia excavatipes; (8) F. apicicornis; (9) F. g r i s e a; (10) F. paranana; (11) F. incognitus; (12) F. diversecostata. Scales 1.0 mm.

FIGURES 13 – 15. Habitus photograph of: (13) Falsocaenia decipiens; (14) F. aurantiacocostatum; (15) Idiopteron nigripenne. Scales 1.0 mm.

FIGURES 42 – 53. Male genitalia in dorsal, lateral and ventral view: (42 – 44) Falsocaenia meridana; (45 – 47) F. irregularis; (48 – 50) F. melanopteron sp. nov.; (51 – 53) F. apicicornis. Scales 0.5 mm.

FIGURES 66 – 68. Male genitalia of Falsocaenia aurantiacocostatum in ventral, lateral, and dorsal view. Scale 0.5 mm.

FIGURES 54 – 65. Male genitalia in dorsal, lateral and ventral view: (54 – 56) Falsocaenia decipiens; (57 – 59) F. callangana, holotype; (60 – 62) F. g r i s e a; (63 – 65) F. paranana. Scales 0.5 mm.