1937 ] 
Megamorphic and Mimetic Flies 
119 
Tityusia regulus new species 
Male. Eyes bare, touching narrowly. Vertical triangle 
quite narrow. Frontal (antennal) prominence well de- 
veloped, shining brownish black. Face and cheeks similarly 
colored, the former light yellow on the sides and covered 
with pale yellow pubescence and similar longer pile, the 
pubescence being sparse on the weak low tubercle. Pile of 
front and vertex black, of occiput above and below, long and 
pale golden in color. Antennae and arista dark brown. 
Thoracic dorsum black, opaque or at best subshining, an 
obscure yellowish pollinose stripe on the middle of either 
side, and even more obscure and narrower vitta lying on the 
midline. Anterior three-fifths of dorsum clothed with dense 
moderately long, pale golden pile, the tips of the hairs 
crinkled and a few very fine black hairs intermixed. The 
posterior part of dorsum, short, thick, black pilose, the 
scutellum golden pilose. All the thoracic pile very erect. 
The brown humeri largely bare, what pile is present (includ- 
ing humeri) is long, tufted, crinkled, and pale golden. 
Abdomen: first segment, the fore and hind borders of 
second and a narrow median connection widening quickly in 
either direction, dark brown to black. A brown subshining 
apical band on the third segment with its fore border raised 
into a low acute pyramid, and a similar apical band on the 
fourth segment with a rounded fore margin that nearly 
reaches the base of that segment, also dark brownish black 
but shining as well. This leaves two very large orange spots, 
shaped like the ends of a parabola on the second segment and 
a similarly colored band at the base of the third segment. 
The base of the fourth segment is densely greenish yellow 
pubescent. Pile on the surface of the segments and in the 
middle, black and appressed becoming more erect, longer and 
golden in color on the sides. Some straggled, curious, long, 
flat, appressed golden hairs on base of the second segment. 
All the legs dark brownish to black, subshining, the very 
narrow bases of tibiae pale, and the tarsi varying shades of 
yellow brown. Pile of femora, except anterior pair, long, 
pale, crinkly. That of hind tarsi, fore tibiae and fore femora 
a most extraordinary mat of dense, excessively long hair. 
Fore tarsi pale, flattened and laterally produced in an extra v- 
