Buchananiella crassicornis Carayon

Buchananiella crassicornis Carayon

(Figs. 3, 6, 13–15)

Buchananiella crassicornis Carayon, 1958: 154; Muraleedharan and Ananthakrishnan 1974: 33; 1978: 66; Yamada and Hirowatari 2005: 73, 74.

Diagnosis. Recognized by the following characters: Head (Fig. 3) blackish brown; anteocular portion slightly shorter than length of eye in dorsal view. Antenna (Fig. 3) yellowish brown; segment II about 0.8 times as long as head width across eyes, apically tinged with dark brown. Rostrum (Fig. 6) pale yellow; segments III basally darkened. Pronotum (Fig. 3) shiny black. Hemelytra (Fig. 3) pale brown; clavus, cuneus, apical 1/3 of embolium blackish brown; membrane uniformly smoky dark brown, with three parallel veins. Legs almost yellowish brown; fore and mid femora sometimes faintly darkened; hind femur blackish brown. Pygophore without parameroid process; paramere (Figs. 13, 14) subrectangular, apically hooked. Omphalus (Fig. 15) cylindrical, more elongate, extending toward anteriorly.

Measurements [ɗ (n=1) /Ψ (n=5)]. Body length 2.50/2.75–3.08; head length (excluding neck) 0.38/0.40– 0.42, head width across eyes 0.42/0.44–0.45; vertex width 0.20/0.19–0.21; width between ocelli 0.10/0.12– 0.14; length of antennal segments I–IV: 0.13/0.10–0.12, 0.34/0.34–0.36, 0.20/0.18–0.20, 0.24/0.22–0.25; length of last three rostral segments II–IV: 0.08/0.06–0.09, 0.23/0.25–0.27, 0.17/0.18–0.20; anterior pronotal width 0.36/0.36–0.38; mesal pronotal length 0.36/0.37–0.40; basal pronotal width 0.77/0.86–0.95; length of embolial margin 0.76/0.80–0.90; length of cuneal margin 0.40/0.50–0.52; maximum width across hemelytra 0.78/0.90–0.98.

Specimens examined. THAILAND: 1ɗ (Figs. 13, 14) 2Ψ (Fig. 3, 15), Mae Sa, 400–450 m alt., Mae Rim, Chiang Mai, 13.viii.2001, T. Ishikawa; 3Ψ (Fig. 6), same locality, 16–17.v.2002, T. Ishikawa.

Distribution. Côte–d’Ivoire, India, Thailand *, Japan (the Ryukyu Islands).

Comments. This species has been fragmentarily known from Côte–d’Ivoire, India, and Japan. Judging from previous distributional records, this is considered to be a tropical and subtropical species.

Specimens from Thailand have a rather larger body than those from Africa (1.78–1.94 in male, 2.00– 2.21 in female: Carayon 1958) and Japan (1.80–2.20 in male, 2.08–2.38 in female: Yamada & Hirowatari 2005).