Ischnotrachelus theobromae, sp. n.

♀. Derm black, covered with dense pale green scaling, varying to dull coppery ; the head and legs normally coppery.

Head with the frons convex, raised much above the level of the eyes, and with a very shallow transverse impression on the vertex ; the eyes much less prominent than usual, as in I. viridipennis, Fst. Rostrum longer than broad, parallel-sided, and set with short stout erect setae ; the dorsum without distinct carinae, its lateral margins not angulated but rounded off, with a fine median stria in the basal half and a low carina at the apex ; the scrobes strongly curved downwards in the basal half and there adjoining the lower margin of the eye. Antennae with the scape somewhat compressed, strongly dilated from the middle to the apex, and with its dorsal edge markedly sinuate ; the funicle short and thick, widening distally, joint 1 longer than 2+3, 2−7 all transverse. Prothorax slightly longer than broad, gently rounded laterally, widest beyond the middle, and without any apical constriction ; the apex a little narrower than the base and dorsally with a dense fringe of recumbent scale-like setae, the postocular vibrissae obsolete ; the dorsum comparatively smooth, the sculpture being hidden by the scaling, with a mere trace of an abbreviated median stria near the base ; the setae very short and recumbent behind, becoming slightly longer and suberect anteriorly. Scutellum minute or obsolete. Elytra rather narrow, oblong-ovate, with a shallow transverse impression at the base so that the margin is slightly raised ; the striae and punctures almost entirely obliterated by the dense scaling ; the intervals each with a row of small subrecumbent setae ; the scales (like those on the prothorax) irregularly rounded and each with a shallow central puncture. Legs with a sharp tooth on all the femora ; the anterior pairs of tibiae strongly denticulate, the hind pair with much smaller teeth.