Dilasia sulcata (Champion, 1900) n. comb.

(Fig. 140)

Lasiochilus sulcatus Champion, 1900: 310 .

Diagnostic characters: Measurements, see Table IV. Male: Characterized by the following combination of characters: head and pronotum reddish brown, hemelytra, tibiae and labium brown; antennae, underside of body, legs and labium, paler. Length of antennal segment II equal to length of head, slightly thickened towards apex; antennal segments (I:II:III:IV) 1: 2.5: -: -; head prolonged anteriorly from base of antennae; hemelytra smooth, dorsal pilosity long, sparse; anterior lobe of pronotum smooth, with median sulcus; posterior lobe rugose; foretibiae armed with acute and slightly curved spines; pad small (Fig 159); copulatory spines on left margin of sternite VI, small and thick (Fig. 160); pygophore with punctures on dorsal surface (Fig. 161); left paramere widened subapically and apically acute (Fig. 162); aedeagus not armed with lateral and subapical feather-like structures. Female: Similar to male in measurements and coloration. Antennal segments (I:II:III:IV) 1: 2.8: 2.1: 2.2.

Distribution: Panama, Venezuela. (Fig. 144).

Material examined: Holotype PANAMA: ♀ “Typus” David in Chiriqui, Lasiochilus sulcatus Ch. BMNH; ♀ Barro Colorado, CZ, 4/ 11-VII-1941, J. Zetek, No 4835. MACN; ♂ Idem (slide-mounted). MACN; VENEZUELA: ♀ 23-VII-1945, intercepted at San Francisco. USNM.

Discussion: This species is characterized by the median sulcus on anterior lobe of pronotum. Differs from D. sulcicollis, a species also having a median sulcus on anterior lobe of pronotum, by having the body not flattened dorso-ventrally, as well as by having an apically acute left paramere.