Macroscytus madagascariensis (SIGNORET)

Macroscytus madagascariensis (SIGNORET)

(Figs 196­202)

Aethus madagascariensis SIGNORET, 1861: 922 ; WALKER 1867: 157.

Macroscytus madagascariensis : STÃL, 1865: 24, 1876: 19; SIGNORET 1883a: 467; LETHIERRY & SEVERIN 1893: 71; LIS 1999d.

DESCRIPTION

Body 11.51­12.68 in length, 5.79­6.73 in width, from castaneous to almost black, hemelytra paler than pronotum and scutellum, exocorium usually yellowish brown.

Head dorsally impunctate; clypeus subapically without a pair of setigerous punctures, each paraclypeus submarginally with a single preocular setigerous puncture (Fig. 197); ocular index 2.50­2.90; interocellar index 4.0­6.0; length of antennal segments (in mm): 0.44­0.50: 0.72­0.83: 0.73­0.87: 0.97­1.14: 1.18­1.32.

Pronotal disc impunctate, except for a row or band of large coarse punctures behind calli; transverse discal impression very shallow or absent; lateral margins of pronotum with 3­4 submarginal setigerous punctures bearing long hair­like setae (Fig. 196). Anterior convexity of propleuron alutaceous, coarsely punctate anteriorly and laterally; posterior convexity alutaceous, with irregularly scattered large punctures; propleural depression with a broad band of large, coarse and deep punctures.

Puncturation of scutellar disc dense, punctures larger than those on pronotum, basal fifth and extreme apex of scutellar disc impunctate.

Clavus with one complete and two partial rows of punctures; mesocorial disc densely and evenly punctate, punctures distinctly smaller than those on scutellum; exocorium densely punctate, punctures slightly smaller than those on mesocorial disc; costa narrow, separated from exocorium only basally, costal margins punctate, but without setigerous punctures (Fig. 196).

Ventral margin of male hind femur with a row of small denticles bearing short setae, and with large subapical tooth, its dorsal margin with a row of small denticles (Fig. 198); male hind tibia carinate on its inner margin (Fig. 198); ventral and dorsal margin of female hind femur with a row of short setae; female hind tibia without carina on its inner margin.

Abdominal sterna polished, punctate in lateral thirds, around trichobothria and spiracles.

Male genitalia as in Figs 199­202.

TYPE DATA

Lectotype male (designated by LIS, 1999d): Madagascar ( NHMW) .

MATERIAL EXAMINED

Lectotype, and 7 other specimens: Madagascar: 2 exx. ( MNHN) ; envir. de Perinet , 2 exx. ( MNHN, UO) ; Sambirano, Manongarivo , 1 ex. ( MNHN) ; Lac Andramdse , 1 ex. ( MNHN) ; massif du Marojejy , 1 ex. ( MNHN) .

DISTRIBUTION

Madagascar.