Emasia dentata, Bocakova, Milada & Janisova, Kristyna, 2010

Bocakova, Milada & Janisova, Kristyna, 2010, A new genus and species of ototretine firefly from Borneo (Coleoptera: Lampyridae), Zootaxa 2347, pp. 59-63 : 61-62

Emasia dentata sp. n.

( Figs. 1–7 )

Holotype, 3, ( NMPC): Borneo, Sabah, km 53, KK-Tambunan, 1650m, Gn. Emas, 22. Mar–6. Apr 2000, Bolm lgt. GenBank accession numbers for DNA sequences from the holotype (tissue collection voucher: UPOL 000M32) are DQ 100523 (18S rDNA), DQ198681 (16S rDNA), and DQ198604 (cox1).

Diagnosis. Body dark brown, trochanters and sterna yellow, antennae as long as the body. Distinguished by the different shape of phallus forming rod-like projections distally and the phallobase with 2 subtransverse projections proximally ( Figs. 5–7 ).

Description. Head, antennae, pronotum, elytra, and most of legs dark brown, trochanters and sterna yellow to light brown. Head with medium-sized eyes ( Fig. 3 ), distance between eyes 1.3x longer than eye diameter, mandibles as long as labral width. Antennae long, reaching elytral apex ( Fig. 2 ), antennomeres 3–10 of equal length, lateral projections of individual antennomeres diminishing apically, antennomeres 3–8 weakly (1.1–1.3x) longer than wide, antennomere 9 1.5x longer than wide. Pronotum trapezoidal, 2x longer than basal width. Anterior pronotal margin weakly produced medially, anterior angles rounded ( Fig. 3 ), lateral margins diverging posteriad, basal margin with 2 emarginations on each side of pronotum ( Fig. 3 ). Posterior pronotal angles acute, projecting obliquely backwards. Elytra 2.4x longer than humeral width. Abdomen without visible luminous organs, phallus ventrally arcuate ( Fig. 6 ). Parameres simple, slightly shorter than phallus, dorso-basally separated ( Fig. 7 ), distal portion curved medially, strongly sclerotized and rounded. Body length: 4.4 mm; humeral width: 1.4 mm. Female unknown.

Etymology. Named in reference to the shape of antennae.

Remark. The holotype will be deposited at NMPC.

Figures

FIGURES 1 – 4. Emasia dentata sp. n.: (1) holotype male; (2) antenna; (3) head and pronotum, a—circular pit, b, cemarginations; (4) terminal abdominal segments. Scales 0.5 mm.

FIGURES 5 – 7. Male genitalia of Emasia dentata sp. n.: (5) ventral view; (6) lateral view; (7) dorsal view; a - proximal transverse projection, b - rod-like projections. Scale 0.5 mm.