Falsocaenia longehumeralis ( Pic, 1922 )

Bocakova, Milada, Baciakova, Barbora & Nascimento, Elynton Alves Do, 2012, Revision of the genus Falsocaenia (Coleoptera: Lycidae), Zootaxa 3478, pp. 282-296 : 285

Falsocaenia longehumeralis ( Pic, 1922)

( Figs 4, 5 , 19, 20 , 57–59 , 70 )

Idiopteron (Falsocaenia) longehumerale Pic, 1922: 24 .

Idiopteron (Falsocaenia) callanganum Pic, 1922: 24 . — syn. n.

Type material. Holotype of Idiopteron (Falsocaenia) longehumerale , female, ‘ Peru: Callanga’ ( MNHN) .

Holotype of Idiopteron (F.) callanganum , male, ‘ Peru: Callanga’ ( MNHN).

Diagnosis. Close to F. paranana from which it differs in the shape of pronotum and elytral coloration ( Figs 4, 5 ).

Redescription. Whole body dark brown, only lateral margins of pronotum, longitudinal humeral stripes, and apical 1/4–1/5 of elytra yellow ( Figs. 4, 5 ). Eyes small, distance between eyes 1.5x (male) –1.4x (female) longer than maximal eye diameter in lateral view. Maxillary and labial palpi dark brown. Pronotum 1.5x wider than long at base ( Figs. 19, 20 ). Elytra 3.7x longer than wide in humeral portion. Male genitalia with parameres reaching slightly over distal constriction of phallus ( Fig. 57–59 ). Female genitalia slender, coxites almost straight, approached distally ( Fig. 70 ). Body length: 6.9 (male)– 9.3 mm (female), humeral width: 1.6 (male)– 2.2 mm (female).

Remark. Antennae of F. longehumeralis damaged, antennomeres 3–11 of both antennae missing. Holotype of F. callangana with antennomeres 3–11 of both antennae missing.

Comment. Pic (1922) described a male and a female of Falsocaenia from the same locality (Callanga, Peru) as two different species— Idiopteron (Falsocaenia) longehumerale (female) and I. (F.) callanganum (male). An examination of the holotypes showed the only difference of the two specimens in the coloration of pronotal margins (yellow or black). As some intraspecific variation of coloration was examined in Falsocaenia, F. callangana is considered to be a younger synonym of F. longehumeralis .

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 16 – 30. Head and pronotum of: (16) Falsocaenia meridana; (17) F. irregularis; (18) F. ecuadorensis sp. nov.; (19) Holotype of F. callangana; (20) F. longehumeralis; (21) F. melanopteron sp. nov. (22) F. excavatipes, (23) F. apicicornis; (24) F. g r i s e a; (25) F. paranana; (26) F. incognitus; (27) F. diversecostata; (28) F. decipiens; (29) F. aurantiacocostata; (30) Idiopteron nigripenne. Scales 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.

FIGURES 69 – 76. Female genitalia in ventral view: (69) Falsocaenia meridana; (70) F. longehumeralis; (71) F. decipiens; (72) F. apicicornis; (73) F. diversecostata; (74) F. incognitus; (75) F. ecuadorensis; (76) Idiopteron nigripenne. Scales 0.5 mm.