Macroscytus subaeneus (DALLAS)

Macroscytus subaeneus (DALLAS)

(Figs 283­286)

Aethus subaeneus DALLAS, 1851: 116 ; DOHRN 1859: 9; WALKER 1867: 160; STÃL 1876: 26.

Cydnus subaeneus : LETHIERRY & SEVERIN 1893: 68.

Macroscytus subaeneus : DISTANT 1899: 222 [part]; STICHEL 1962: 775 [part]; LIS 1994a: 227.

DESCRIPTION

Body 8.45­9.24 mm in length, 4.70­5.05 mm in width, from dark castaneous to almost black, corium slightly paler than pronotum and scutellum.

Head dorsally at first glance looking impunctate, but bearing hardly visible tiny punctures; clypeus without subapical setigerous punctures, each paraclypeus submarginally with a single preocular setigerous puncture (Fig. 283); ocular index 2.30­2.57; interocellar index 6.9­9.0; length of antennal segments (in mm): 0.37­0.46: 0.42­0.57: 0.51­0.70: 0.66­0.85: 0.80­1.01.

Pronotal transverse impression behind calli absent, disc undivided into lobes, posterior half with more or less broad band of punctures; lateral margins with 3­ 6 submarginal setigerous punctures (Fig. 283). Propleural depression with numerous coarse punctures.

Scutellum almost impunctate or with a few clearly separated punctures.

Clavus with one complete and two partial rows of punctures; exocorium and mesocorium almost evenly punctate; costa moderately convex, basally flattened, almost entirely separated from exocorium, bearing two setigerous punctures (Fig. 283).

Hind male femur with one large and two small teeth basally and one tooth subapically (Fig. 286).

Abdominal sterna polished and smooth, sometimes slightly wrinkled close to segmental sutures; lateral third of segments finely punctate, and bearing triangular patches of dense tiny punctures posterior to spiracle and several punctures anterior to it.

Male genitalia as in Figs 283­285.

TYPE DATA

Lectotype male (designated by LIS 1994a: 228): Philippines ( BMNH) .

MATERIAL EXAMINED

Lectotype, and 2 other specimens: Indonesia: Flores, Larantoeka , 1 ex. ( ZMA) . Thailand: Siam , 1 ex. ( MNHN) .

DISTRIBUTION

Indonesia (Flores), Philippines, Thailand.

Records from other countries were based on misidentifications (see LIS 1994a).