Lonchaea angelina
Head: Compound eyes hairy, hairs pale, moderately dense, as long as combined diameters of
three omatidia. Frontal and interfrontal setulae numerous, as long as orbital seta, orbital plates
with setulae in addition to single seta. Antennae entirely black, first flagellomere 1.5x longer than
broad; arista black, microscopically pubescent. Genal setulae forming multiserial rows anteriorly.
Thorax: Thoracic disc subshining black with dense setulae as long as orbital seta. Anepimeron
covered with numerous setulae as long as orbital seta, no obvious differentiated row of strong anterior
or posterior setae. Katepisternum with one weak seta near dorsal margin not greatly differentiated
from the other setulae on sclerite, scattered setulae present anterior to this seta, none posterior.
Proepimeron with two setae, one propleural. Scutellar disc slightly brownish when compared
to thorax, bare, margin with two setulae between apical and lateral setae, two between apical setae,
these slightly creeping on to disc. Legs entirely black.
Wings: Calyptrae greyish with a long, dark fringe. Wings clear with whitish veins. Intercostal
space, (area of costa between insertion of veins Sc and R1) with length to depth ratio 3 : 1
(measurement as in Fig. 4d). Ratio of length of intercostal space to internal length of rm (sured from the lower margin of vein R4+5 to the
upper margin of vein M1) 5 : 1. When the line of crossvein r-m is extended to costa it reaches it at
the insertion of Sc. Wing length 2.8mm. Male genitalia: Fig. 1. Epandrium in lateral
view wider than high, bearing a row of setulae along posterior margin and a group of setulae at
posterioventral angle. Cerci rather rectangular, not heavily chitinised, bearing setulae along the
mid-line and at apex. Surstyli projecting ventrally beyond the shell of the epandrium with a row
of strong setae on margin, a slight posterioventral projection evident. Inner surface of surstyli
with a single row of 6 very strong setae, area between this row and the ventral margin with only
a few shorter setae, a spherical process covered with small spicules present anterior to the single
row of strong setae, this process arises from and forms part of the surstylus, it seems to be unique
to L. angelina with no similar analogue in other members of the group or as far as I know in other Lonchaea species. Phallus two segmented, basal
part rectangular and rather broad, apical part S-shaped