Xanthandrus (Androsyrphus) setifemoratus Thompson  

Adapted from original description (Thompson 1981).

MALE.

Head: Black; face and gena silvery-white pollinose except shiny on tubercle, yellow pilose laterally; frontal lunule black; frontal triangle shiny except narrowly white pollinose laterally, yellow pilose; vertical triangle shiny, yellowish-brown pilose; ocellar triangle about twice its length anterior to posterior eye margin; occiput silvery-white pollinose, white pilose becoming slightly more yellowish above. Antenna: scape brownish orange, black pilose; pedicel yellow, black pilose; basoflagellomere yellow except apicodorsal 1/3 black, elongate oval, about 5/6 as long as broad; arista brown, as long as antenna.

Thorax: Black, with a slight bluish-green sheen, white pilose; scutum and scutellum shiny; pleuron sparsely white pollinose except more densely pollinose on posterior anepisternum and dorsal katepisternum; calypter and plumula pale orange; halter orange with capitulum slightly darker. Legs: Coxae dark, sparsely white pollinose, white pilose; trochanters dark reddish brown, yellow pilose; profemur reddish brown except orange apex, yellow pilose; mesofemur dark reddish brown and yellow pilose on basal 2/3, orange and black pilose on apical 1/3, with black ventral spinose setae on apical 1/2; metafemur dark reddish brown except orange apex, yellow pilose except black pilose on apical 1/4, with strong long black ventral spinose setae on apical 4/5; pro- and mesotibiae orange, with slightly brownish medial tinge, black pilose, with some longer and stronger black pile on posteromedial 1/3; metatibia dark reddish brown except orange on base, black pilose; protarsus dark brown, black pilose; mesotarsus orange on basal 2 tarsomeres, brownish on apical 3 tarsomeres, black pilose; metatarsus brownish black, black pilose. Wing: with brownish tinge, extensively microtrichose, bare as follows: 1st costal cell, basal 4/5 of 2nd costal cell; above Rs, cells R and BM, basal 1/5 of cell R4+5, posterobasal 1/4 of cell dm, along anterior and posterior edges of cell CuA1 on basal 1/2, anterobasal 1/2 of CuP, in front of A2, and basal 5/6 of alula; tegula and basicosta brownish-black pilose.

Abdomen: 1st tergum shiny black, yellow pilose; 2nd tergum mainly dull black, shiny laterally, with 2 large sublateral orange maculae which extend over lateral margin on their anterior 1/3, with maculae broadly separated, yellow pilose on margins and maculae, short black pilose elsewhere; 3rd tergum similar to 2nd but with maculae isolated from lateral margins; 4th tergum mainly dull orange, shiny laterally, with indistinct medial brown vitta and apicomedial triangle, yellow pilose laterally and on basal 1/2, black pilose elsewhere; 5th tergum dark reddish brown, yellow pilose; 1st sternum dark brown, sparsely white pollinose, white pilose; 2nd sternum dark orange, shiny, yellow pilose; 3rd sternum dark reddish brown, shiny, yellow pilose; 4th sternum orange, densely pilose, with lateral pile longer and medial pile long but slightly decumbent; genitalia black, black and brown pilose.