63. SYRPHUS CONSEQUENS, n. s., mas et fœm. Luteus, vertice nigro,
antennis nigro-vittatis, thoracis disco chalybeo, abdominis fasciis
quatuor atris, femoribus posticis apice necnon tibiis tarsisque
posticis nigris, alis subcinereis apud costam subfuscis.
Closely allied to _S. ericetorum_.—_Male and Female._ Pale luteous.
Head black and shining on the vertex by the antennæ, pale testaceous
in front. Proboscis tawny. Antennæ tawny, with a black dorsal
stripe; arista black. Disk of the thorax chalybeous. Abdomen with
four deep black bands on the hind borders of the segments. Hind
tibiæ, hind tarsi, and tips of hind femora black. Wings slightly
greyish, with a brown tinge along the costa; veins black. Halteres
pale testaceous.—_Female._ Vertical callus capitate. Length of the
body 4½–5½ lines; of the wings 10–12 lines.
Singapore and Mount Ophir.
64. SYRPHUS DUPLEX, n. s., mas et fœm. Chalybeo-niger, gracilis,
antennis maris piceis fœminæ fulvis, abdominis fasciis tribus
interruptis testaceis, femoribus anterioribus testaceis apice
nigris, posticis basi testaceis, alis subcinereis.
_Male and Female._ Chalybeous black, slender. Antennæ of the male
piceous, of the female tawny. Abdomen with three dull interrupted
testaceous bands, slightly compressed for three-quarters of the
length in the male. Legs black; anterior femora testaceous with
black tips; hind femora testaceous at the base. Wings greyish; veins
and stigma black. Halteres testaceous. Length of the body 6 lines;
of the wings 12 lines.
Singapore.
65. SYRPHUS TRILIGATUS, n. s., mas. Flavus gracilis, antennis fulvis,
thoracis disco chalybeo-nigro, pectore et metathorace nigris,
abdominis fasciis quatuor latis quatuorque angustis nigris,
femoribus posticis nigro latè fasciatis, tibiis tarsisque posticis
nigris, alis subcinereis.
_Male._ Pale yellow, rather slender. Antennæ tawny. Disk of the thorax
chalybeous black. Pectus and metathorax mostly black. Abdomen with
eight black bands which are alternately broad and narrow. Hind
femora with a broad black band; hind tibiæ and hind tarsi black.
Wings greyish; stigma brown; veins black. Halteres pale testaceous.
Length of the body 4½ lines; of the wings 9 lines.
Mount Ophir.