Elytral punctation |
deep punctures in indistinct rows |
shallow punctures in distinct rows (deep and irregular in
D. dispar
)
|
deep punctures in indistinct rows |
Male antennal club |
large; longer than antennomeres 1–7, same length as head |
enlarged; same length or shorter than antennomeres 1–7, shorter than head |
enlarged; same length as antennomeres 1–7, shorter than head |
Sexual dimorphism extensive and easily visible |
yes |
yes |
no |
Clypeus |
trapezoidal; widest at apex; anterior margin sublinear and level with apex of mentum; anterior and lateral margins abruptly elevated dorsally |
not trapezoidal; widest point not at apex; apex bilobate and surpassing apex of mentum; anterior and lateral margins not abruptly elevated dorsally |
subquadrate to elongate; widest point not at apex; apex bilobate and surpassing apex of mentum; anterior and lateral margins not abruptly elevated dorsally |
Subhumeral arch in dorsal view |
sublinear |
shallow to distinctly arcuate |
shallow arcuate |
Pronotum |
widest in basal half, not transverse trapezoidal, length and width sub-equal; basolateral extent of pronotum reduced, not produced laterally, visibly exposing mesepimeron; basolateral margins subparallel |
widest at base, transverse trapezoidal (except in
D. melonopyga
); basolateral extent of pronotum produced, exposing only extreme apex of mesepimeron (except in
D. melonopyga
); basolateral margins convergent
|
widest at base, transverse trapezoidal; basolateral extent of pronotum reduced, visibly exposing mesepimeron; basolateral margins weakly convergent |
Female metatarsal length |
approximately same length as metatibia |
shorter than or equal to length of metatibia |
distinctly shorter than metatibia |
Paramere shape |
each paramere approximately equal in width over entire length; viewed laterally, arcuate from base to cleft then linear |
each paramere widest at base, narrowing medially and widening just before apex; viewed laterally, arcuate to cleft then linear |
each paramere narrowest at base, gradually widening to widest point at apex; viewed laterally arcuate to apex |
Pygidium viewed laterally |
evenly arcuate |
subangulate medially |
subangulate medially |