Intybia baeri ( Fairmaire, 1898 )

Tshernyshev, Sergei E., 2016, Taxonomic revision of Intybia Pascoe, 1886 species (Coleoptera, Malachiidae) of Thailand and Philippines, Zootaxa 4147 (2), pp. 101-123 : 112-114

Intybia baeri ( Fairmaire, 1898)

( Figs 27–33 )

Laius Baeri Fairmaire, 1898: 389 ; Greiner 1937: 149; Wittmer 1941: 223; Intybia baeri ( Fairmaire, 1898) : Wittmer 1997: 182, 183–184, figs. 1–5.

Material examined. 1 male: Philippines: Mindoro Island , Baco municipality, Halcon Mountain, south, 13°15′N 120°59′E, June 2011, coll.—? ; 1 female, ibidem.

Description. Male ( Fig. 27 ). Body elongate, parallel.

Head black without metallic luster, with yellow posterior margin of clypeus. Antennae dark brown with 1st– 4th and base of 5th segments yellow. Pronotum completely black, lacking metallic luster. Light part of the elytra contrasting, two spots near apices light yellow, remaining part dark yellow, dark parts without metallic lustre. Underside black except for yellow tips of coxae and trochanters at joining place; legs black. Surface of head and pronotum with sparse short and long erect goldish pubescence, elytra with double gold-brown pubescence, sparse, fine and semi-erect and long strong erect hairs. Vesicles orange; thoracic mesepimera black.

Head of the same width as the pronotum, front flat; slightly depressed, eyes small, slightly protrudent, genae short and straight; clypeus narrow, transverse, straight; labrum short, transverse; palpi simple with obliquely truncate apical segment; surface of head shining, punctures sparse and fine, microsculpture indistinct, covered with short, goldish, adpressed pubescence and sparse erect long brown hairs.

Antennae filiform with modified 1st–3rd segments, 2.0 mm long, reaching the middle of elytra; 1st segment enlarged, oblongo-clavate, 2nd rounded, very small, almost completely hidden by the 1st, 3rd round, swollen and flattened, complicatedly impressed dorsally, with bunch of hairs above in a middle of impression ( Fig. 28 ), the remaining segments short cylindrical, more or less equal in length, apical segment evenly sinuate at apex; surface evenly covered with short, light semi-erect pubescence.

Pronotum longitudinal; with strongly archly protruding anterior side and straight posterior side; lateral sides strongly narrowed just behind the middle to the base, disc strongly impressed behind the middle before the basal side; lateral and basal sides of the pronotum distinctly marginate; surface very sparsely and finely punctured lacking microsculpture except for densely punctured narrow basal parts near lateral sides, shiny, with dense fine semi-erect and sparse long erect pubescence.

Scutellum small, rectangular, densely punctured and covered with sparse pubescence, mat, distinct.

Elytra oblong, parallel-sided, at base distinctly wider than the pronotum at base; humeri distinct, slightly protruding, suture emarginate, apices slender and simple, lacking appendages or processes, evenly sinuate and rounded ( Figs 26 ); surface distinctly and densely punctured, punctures slender, microsculpture lacking, all surface shining, covered with dense goldish-brown semi-erect and sparse erect brown hairs.

Hind wings normally developed.

Legs moderate in size, thin; femora slightly emarginate ventrally near tibiae, posterior femora not reaching the elytral apices; tibiae thin, straight; femora slightly compressed; tibia rounded, all tarsi 5-segmented, narrow, anterior tarsi lacking combs; 5th segment flattened and widened, the longest, 1.5 times longer of the combined length of 3rd and 4th tarsomeres, the 1st segment is the smallest of anterior and intermediate legs; claws with lamella at base, short, curved and sharp. Surface covered with short white adpressed hairs in anterior and intermediate legs and long semi-erect hairs in posterior tibiae.

Ventral body surface densely punctured, evenly covered with white sparse, fine, depressed pubescence and distinct microsculpture; pygidium transversal, evenly sinuate to apex and triangularly emarginate in the middle ( Fig. 29 ); ultimate abdominal ventrite narrow, transverse, evenly sinuate at apex and slightly emarginate at the middle, undivided ( Fig. 30 ); aedeagus simple, straight, with elongate and narrow apical lamella, endophallus with a number of small dents and three spines inside ( Fig. 32 ); tegmen wide, with very short and thin parameres ( Fig. 31 ).

Length 3.1 mm, width (at elytral base) 1.0 mm.

Female unknown.

Distribution. The species is known from Luzon and Mindoro islands in the Philippines ( Fig. 33 ).

Notes. Detailed description of the species with illustration of genitalia, antennae and total view of male are presented here for the first time.

Figures

FIGURES 27 – 33. Intybia baeri (Fairmaire, 1898), male, dorsal view (27); left antenna (28); pygidium (29); ultimate abdominal ventrite (30); tegmen (31); aedeagus, lateral (32); distribution map (33). Scale bar 0.5 mm.

FIGURES 20 – 26. Intybia birmanica (Champion, 1921), male, dorsal view (20); left antenna (21); pygidium (22); ultimate abdominal ventrite (23); tegmen (24); aedeagus, lateral (25); distribution map (26). Scale bar 0.5 mm.