144 DIPTERA 
Pygidium large or rather small. Legs setose, metatarsi not swollen, female legs rarely pennate. 
Wings of female of E. borealis remarkably broad, but in the other species normal, neuration usually 
complete, discal cell more or less pointed, anal lobe full, axillary incision deep and sharp. 
This genus originally included two species, Em5is borealis, Linn., and &latybtera, Panz. Curtis in 
1824 designated borealis as type, unmindful of the rule in present-day nomenclatorial proceedure that 
gives preference to a tautonymic species. Accepting Curtis' selection safeguards much confusion for 
otherwise the host of species described as RAam?Aomyia would require a change of name to the earlier 
described Platybtera. H endel would recognize in Dionnaea the genus Platyftera, and acceptance of this 
conclusion would still further imperil the nomenclatorial stability of the dominant genus Rhamfhomyia. 
Eriogaster, Macquart founded on Emfis laniventris, Eschscholz is subgenerically equivalent to the species 
grouped about E. borealis.  Platypterygia, Stephens was erected for E. borealis. This is the group for 
which most European dipterists reserve the name Empfis, s. str., based on E. tessellata, 
The following species belong to the subgenus P/atyPtera: E. alampra, Lw., Aldrichii, Mel., borealis, 
Linn., brachysoma, Coq., brevicornis, Lw., celigena, Mel., calcarata, Bez., cognata, Egg., cothurnata, Brullé, 
crassa, Now., dedecor, Lw., discolor, Lw., divergens, Lw., erosa, Lw., fallax, Egg., fraterna, Lw., fumida, 
Coq., infumata, Coq., levigata, Lw., laniventris, Eschsch., livida, Linn., lucida, Zett., maculipes, Zett., 
meridionalis, Meig., morio, Fab., wigricans, Meig., nifidiventris, Lw., obesa, Lw., opaca, Meig., flebeja, 
Lw., folita, Macq., ravida, Coq., scatophagina, Mel., serena, Pok., sírigata, Lw., tessellata, Fab., variegata, 
Meig., and virgata, Coq. 
SuBGENUS POLYBLEPHARIS, BeEzzi 
Characters. — Rather large, cinereous, heavily bristly species, with sex differences in color and 
size. Both sexes dichoptic, facets small and uniform ; sides of front parallel; head globular, with strong 
occipital bristles; proboscis long, palpi large, with many long bristles; first antennal joint short, third 
not long, excavated below thetip. Thorax strongly bristly and sometimes also hairy ; acrostichals dense, 
more or less definitely biseriate, central dorsocentrals in two or more rows, the posterior three to seven 
strong and uniseriate, several each of humeral, posthumeral, notopleural, presutural and supra-alar 
bristles, four to eight scutellars ; propleural and metapleural bristles very strong. Abdomen hairy and 
with very strong lateral bristles before the incisures, pygidium small and closed, female abdomen blunt, 
ovipositor short. Legs stout, strongly bristly and hairy, the hind coxe and hind femora greatly 
thickened, especially in the male, hind femora more or less curved. Wings alike in both sexes, 
unusually narrow and pointed, neuration complete and light colored, no basal seta, third vein anteriorly 
located and ending much before apex, second submarginal cell very small, discal cell small, rather 
pointed, axillar incision acute and rather deep. 
Type species : Empis albicaus, Meigen, by Bezzi'sdesignation. The other recorded species are 
curvibes, Lw., eumera, Lw., and fAenomeris, Lw., all restricted to Southeastern Europe and Asia Minor. 
The American species frontalis, Coq., and sfectabilis, Lw., may be assigned here, althouph probably they 
are phylogenetically distinct. 
SuBGENUS PYRREMPIS, Nov. SUBGEN. 
Characters. — Full-sized, yellow, setose species. Head globular, occipital setze biseriate and 
strong; eyes of male narrowly separated above the middle of the front, facets uniform ; antennze setulose 
at base, the second joint much shorter than the first; proboscis twice the head-height, palpi with few 
hairs. Prothorax not lobate, but margined with stiff setze; dorsocentrals uniseriate, acrostichals wanting 
or the anterior ones weakly indicated, humeral, posthumeral, presutural, two notopleural, and one or 
two supra-alar bristles present; propleural setze present, metapleural setzte bunched. Abdomen shining, 
