Earomyia brevistylata McAlpine

Male.—Yxons dull brownish-black, little more than one-half as wide as high
(2.66:4.5); somewhat less densely hairy than in abietum but otherwise very
similar to that species in this respect. Inferior orbital setulae, about 40, not in
a uniserial row; four setulae above the orbital bristle in side view. (This number
varies from two to six in other specimens). Parafacial narrower than in abietum;
opposite the base of the arista, distinctly narrower than the distance between the
posterior ocelli; cinereous pollinose, the pollen less evident along the mesal
margin. Compound eye much higher than in abtetum\ hence the genal area
(cheek) much narrower, i.e., hardly as wide (high) as the width of the front
tibia; genal hairs and oral setulae much as in abietum, except the oral setulae not
continuing so far dorsad on the facial ridges. Compound eye ostensibly bare.
(Very sparse, minute hairs are visible under high magnification, but these are
never nearly so evident or abundant as in abietum). Antennae, including the
arista, darker than in abietum-, the first and second segments orange-brown; the
base of the third, inside, always with some orange-brown; third antennal segment
as wide as long (1.5:1.5); antennae otherwise as in abietum. Arista less conspicuously pubescent than in abietum\ about four times as long as third antennal

segment (6.1:1.5); thickened on the basal one-sixth. Head otherwise much as
in abietum.
Thorax as in abietum except as follows: possibly a little less shining; hairs
of the mesonotum somewhat finer and shorter, hence the principal bristles some¬
what easier to distinguish.
Legs the same as in abietum; the second tarsal segments as well as the apical
three darkened particularly m the front tarsi; the hind metatarsi not so swollen
as in abietum.
Calyptrae as in abietum, wings more brownish-hyaline, not so milkyyellowish,
as in abietum.
Abdomen more pollinose laterally and apically than in abietum; otherwise
the abdomens very similar in both species.
Genitalia (Figs. 19 and 21).—The epandrium similar to that of Barbara and
abietum; the ventral margin of each side rounded as in abietum (Fig. 20); the
"toe" more elongate as in barbara (Fig. 13); with slight but fairly constant
differences in the shape of the surstyli as shown in these lateral views. Always
with only one setula on the mesal expansion of each anterior gonopophysis.
Female (Fig. 7).—Sexual differences as in abietum except as follows: frons
slightly longer than wide (4.3:4.0); eyes bare; third antennal segment distinctly
longer than wide (1.75:1.4); hairs of notopleuron more widely distributed;
mesopleuron with five posterior and three anterior bristles.
Ovipositor (Figs. 5, 9) short as in abietum\ under high magnification the
lateral margins (dorsal aspect) appearing diagonally striate as shown m Figure 5.
For a discussion of differences between the ovipositors of brevistylata and abietum
see under the latter species.