I40 BRITISH BLOOD-SUCKING FLIES
C. vexans Staeger
(Fig. 58, c-f)
Ceratopogon vexans Staeger, 1839, Nat. Tidsskr., 2, 593
Palpomyiapungens Kiefter, 1901, Bull. Soc. Nat. Hi^t. Metz, 21 163
tuhcoidesperpungens Kieffer, 1925, Faune de France, 11, 77.
Tergite rather variable in shape ; processes usually short, sometitnes
moderately long ; distal margin of tergite rather deeply notched in middle,
sometmies wuh a pair of broadly rounded lobes developed between the apicolateral
processes. Stermte with shallow emargination, membrane bare. Coxite
somewhat narrowed distally ; ventral root foot-shaped, with long " toe " but
the heel not very prominent. Aedeagus without definite antero-ventral
ventral view : a, b, albuans (a, Germany, det. Wmnertz ; b. Manf
n S b t C t r ; ^ ^ ^ ^ ^ ^ ^ ^ Wood Walton Fen); „ H, fe,
border, d^tal part narrow and often pale, a small projection on each side not
always obvious. Parameres slender, sinuous, tips very thin, normally bare
but occasionally with one or two fine barbs.
I am indebted to Drs. S. Andersen and S. L. Tuxen for reporting upon the
hypopygium of Staeger's type c? of C ; they inform me that it agrees
completely with the figures here given, notably in regard to the form of the
parameres and ventral roots of coxites.
GENITALIA OF CULICOIDES 141
C. albicans Winn.
(Fig. 58, b)
Ceratopogon albicans Winnertz, 1852, Linn. Ent., 6, 41.
Tergite with rather short apico-lateral processes ; middle of posterior
margin less deeply notched than in C. vexans and not distinctly bilobed. Sternite
with moderate emargination, membrane in the emargination nearing a few
spicules. Coxite much as in C. vexans, aedeagus also rather similar. Parameres
slender, bent almost at right angles beyond middle, the distal part with
3 to 5 barb-hke branches.
The identity of this species is established by a male in the British Museum
named by Winnertz himself.
Lundstrom and Goetghebuer have both attempted to distinguish C. vexans
and C. albicans by the presence or absence of hairs in the lumen of the second
radial cell, but I do not find this feature diagnostic.
C. brunnicans sp. n. (p. 43)
(Fig. S8, h)
Tergite much as in C. albicans, but rather broader. Sternite with moderate
emargmation, membrane bare. Coxite shorter and broader than in iT. vexans
or albicans, ventral root foot-shaped as in the other two species, but the " heel "
very much more prominent. Style somewhat stouter. Parameres stout nearly
to the tips, which are conspicuously S-shaped.
C, neglectus Winn. (?)
(Fig. 57, e)
(?) Ceratopogon neglectus WwratTiz, 1852, Linn. Ent., 6, 46.
Culicoides neglectus albohalteratus Goetghebuer, 1935, Bull. Soc. Ent. Belg.,7S, 414.
Tergite with long, finger-like processes. Sternite with membrane bare
Coxite with short, simple ventral root. Style nearly straight, tip slightly
curved and not enlarged. Parameres angled near base, tips very slender and
strongly curved.
The above diagnosis and accompanying figure (fig. 57, e) have been prepared
from a male from Melle, Belgium, recorded by Goetghebuer in the above
reference and kindly lent me by him for examination. The hypopygium is
extremely similar to that of C. odtbiUs, which is surprising considering the
dissimilarity of the insects in external appearance.
C. cunctans Winn.
(Fig. 59, b, c)
Ceratopogon cimctans, Winnertz 1852, Linn. Ent., 6, 42.
Tergite with the processes long, finger-like, parallel or nearly so, margin
oi tergite between them straight and bearing a row of short hairs. Sternite
apparently variable in shape, one or two of the four specimens mounted showincx
a pair of pubescent lobes in the middle, these lobes not visible in the others