Agrilus dilatipenis Jendek, sp. nov.

Figs. 30, 54, 73

Diagnosis. This species is very distinctive by the bell-shaped pronotum with acute basal angles and by the aedeagus conspicuously expanded apically.

Description (Holotype): Body form, color and pubescence as in Fig. 30. Head small, moderately convex; eyes not protruding from head outline. Pronotum bell-shaped, with sides slightly bisinuate, emarginate at base and then arcuately convergent apicad; apical pronotal margin distinctly narrower than basal margin; anterior pronotal lobe large and distinctly projecting beyond apical pronotal angles; basal angles acute; pronotal disk obviously convex, with distinct basal impression; lateral impressions absent; prehumerus extending to about half of pronotal length, sharply costate, feebly arcuate, with apex clearly distant from marginal carina (lateral view).

Elytra elongate, without humeral carinae, faintly bichromatic, with golden-bronze and golden-violet patterns, combined with golden and golden-whitish ornamental pubescence; apices widely, separately, shallowly arcuate.

Prosternum (Fig. 54): Prosternal lobe large, with apical margin distinctly incised medially; prosternal process with faintly expanded sides; disk flat with uniplanar lateral corners. Basal abdominal ventrite without tubercles; apex of last abdominal ventrite slightly, but distinctly emarginate.

Aedeagus (Fig. 73).

Length. 4.8–5.7 mm, Holotype 5.7 mm.

Sexual dimorphism. Female without apparent sexual differences.

Variability. Some paratypes have basal pronotal impression deeper; elytra more contrastly bichromatic and elytral apices more markedly arcuate.

Type series. Holotype 3 (EJCB): “ Thailand bor., 19– 21.5.1997, Chiang Dao, lgt. M. Snížek”. Paratypes: 15 exs (EJCB): Thailand: Chiang Mai: 1 Ƥ (EJCB): with the same locality label as holotype; 1 3 (EJCB): “ THAI, 17–24.V.1991, Chiang Dao, 1000 m, 19°25'N, 98°52'E, Vít Kubáň leg.”; 2 exs (EJCB): “ Thailand bor., Chiang Dao, 21.5.– 4.6.1995, lgt. M. Snížek”; Mae Hong Son: 1 Ƥ (EJCB): “18.4.– 1.5.1997, Pai, Thailand, M. Zyka lgt.”; 1 Ƥ (EJCB): “NW Thailand, 1–15.5., 1991, Mae Hong Son, Ban Huai Po, 800–1600 m, S. Bílý leg.”; 1 3 (EJCB): “NW Thailand, 1–7.V.1992, Mae Hong Son, Ban Si Lang, 1000 m, S. Bílý leg.”; 2 exs (EJCB): “NW Thailand, 19.19N, 97.59E, Mae Hong Son, 1991, Ban Huai Po, 1600–2000m, 30.4.– 4.5. L. Dembický leg.”; 3 3 (EJCB): “NW Thailand, 8–18.V., Mae Hong Son, 1992, Ban Si Lang, 1200 m, J. Horák leg.”; 1 Ƥ (EJCB): “NW THAI, 8–18.V.1992, Mae Hong Son, 1991, Ban Huai Po, J. Horák leg.”; 1 3, 1Ƥ (EJCB): “NW Thai, 30.iv.–4.v., Mae Hong Son, 1991, Ban Huai Po, 1600–2000, L. Dembický leg.”.

Type locality. Thailand borealis, Chiang Mai province, Chiang Dao [19°24'N, 98°55'E] Distribution. Thailand: Chiang Mai, Mae Hong Son.

Etymology. The name is a combination of Latin verb dilato, -are (to make wider or larger, cause to expand) and the noun penis (the male organ of copulation), to stress the peculiar shape of the aedeagus of this species.