REVISIONARY CLASSIFICATION OF RUTILIINI 37 
near the postocular setulae. White pollinosity of humeral calli and prescutum of 2 
thick and very conspicuous to naked eye, making anterior half of thoracic dorsum 
appear rather greyish (except for the black vittae). Pollinose spot of sterno- 
pleuron weakly marked and partly brownish. Submedian pair of black marks on 
the anterior edge of scutum (i.e. the ends of the inner pair of black mesonotal 
vittae) more or less connected by dark brown coloured area medially. Small 
species, length 12.5.16 mm. [Queensland and New Guinea] ; : . FF. faceta 
— Upper occiput distinctly metallic green in the area of the postocular setulae. White 
pollinosity of humeral calli and prescutum of 9 inconspicuous to naked eye, not 
distinctly reaching to transverse suture, whole mesonotum appearing bright 
metallic green or blue-green. Pollinose spot of sternopleuron very distinct, almost 
entirely white like the mesopleural spot. Submedian pair of black marks on 
anterior edge of scutum (ends of the inner pair of black mesonotal vittae) small 
and square and widely separated by the metallic green colour, which reaches 
medially to the front edge of the scutum (transverse suture). Large species, length 
17°5-20 mm. [Queensland] : F. smaragdina 
Formosia (Euamphibolia) fusca sp. n. 
(Text-fig. 40) 
6- Head. Ground colour blackish brown, slightly more reddish brown on facial carina, 
antennal foveae and upper genae; lunula shining yellowish brown, interfrontal area velvety 
brownish black; head rather thickly yellowish white pollinose on anterior parts, more thinly 
greyish white pollinose on occipital regions. Parafrontal and genal hair black, occipital hair 
reddish brown. Eyes not very strongly approximated and upper facets not enlarged; upper 
interfrontal area distinct and nearly twice as wide as parafrontal, frons at narrowest about 
| 0-14 of head width and wider than facial carina. Ocelli slightly raised, ocellar setae undeveloped. 
_ Facial carina nearly twice as long as epistome, subparallel-sided. Gena one-third (0-33) of eye 
jheight. Parafacial about 3-5 times as wide as width of third antennal segment and much 
wider than length of this segment. Antennae dark reddish-brown, very small and falling short 
/ of mouth-margin by very much more than their own length; third segment about 2-1 times as 
| long as second segment; arista micropubescent. Palpi brown with paler tips. Thorax. Black- 
/ish brown with very thin brownish pollinosity, non-metallic; scutellum slightly more reddish 
/brown than scutum. Thoracic hair entirely black. Chaetotaxy normal for subgenus but 
| setae rather small [post ia setae and postalar setae of left side and some marginal scutellar setae 
/missing from holotype, but pores distinct]. Anterior sternopleural seta minute, almost hair- 
like. Scutellum with five pairs of marginal setae, and one or two smaller irregular submarginals. 
Wings. Basicostae and basal spots extremely dark, almost black; membrane mainly hyaline 
_except for narrow traces of yellowish brown colour immediately adjacent to veins. Calyptrae 
.dark brown with brown marginal hair. Legs. Black with entirely black hair; femora not 
conspicuously attenuate. Mid tibia without ad setae and without definite p setae; hind tibia 






without pd setae. Claws very long. Abdomen. Entirely blackish brown with black hair, 
_concolorous with thorax. Dorsal hair exceedingly fine and abundant, recumbent on T3 and 
| very dense medially, semi-erect on T4 and erect on T5. T3 without median marginal setae; 
| T5 with some long setae developed among the long fine hair posteriorly to the transverse row 
}of setae. Depression of T5 well formed and conspicuous. Genitalia as in Text-fig. 40. Mea- 
|suvements. Body length 18-2 mm, wing length 18-5 mm [one specimen, holotype]. 
9. Extremely similar to § except for usual sexual differences. Interfrontal area only 
' slightly narrowing dorsally; proclinate orbital setae absent. Vertex 0:25 of head width. Facial 
carina more pinched in at lower end than in gj. Body length 20-0 mm, wing length 18-8 mm 
[one specimen]. 
