Fossil Sciaroidea (Diptera) in Cretaceous Ambers, Exclusive of Cecidomyiidae, Sciaridae, and Keroplatidae
Author
BLAGODEROV, VLADIMIR
Author
GRIMALDI, DAVID
text
American Museum Novitates
2004
2004-02-27
3433
1
1
76
http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1206%2F0003-0082(2004)433%3C0001%3AFSDICA%3E2.0.CO%3B2
journal article
5822
10.1206/0003-0082(2004)433<0001:FSDICA>2.0.CO;2
51eea930-5f0d-43f6-8e03-3093edf36cd7
0003-0082
4712338
Ectrepesthoneura swolenskyi
,
new species
Figures 50, 51
, Plate 5E
DIAGNOSIS: Sc long, meets R just before base of M3. Small radial cell relatively long. Gonocoxites with triangular ventral appendages bearing 2 long, dark apical spurs.
DESCRIPTION: Body length =
2.71 mm
; wing length =
2.46 mm
.
Head:
Ocelli three, from lateral ocellus to eye margin twice ocellus diameter. Flagellomeres cylindrical, length 1.5Χ width. Three palpomeres seen, apical one slender, length ratio 1:2:3.5.
Thorax:
Antepronotum with 2 setae, proepisternum with 4. Scutum with setae curved forward, lateral setae very long.
Wing:
All longitudinal veins except Sc with short setae.
Costa
ends beyond tip of R
5
, onehalf distance between tips of R
5
and M
1
. Sc meets R just before M3 base. Length of R
1
2.2Χ that of
rm.
Length of M3 2.7Χ that of
rm.
Ratios of lengths of sections RS1, RS2, and RS3 1:2.3:7. RS1 oblique, 0.58Χ length of
rm.
M3, M
1
, and M
2
weak, M
1
slightly curved forward. M
3+4
and CuA curved gently caudad.
Legs:
Fore and mid tibiae longer than femora. Mid tibia with anterolateral, posterolateral, and posteromedial rows of short bristles, hind tibia with two rows of posterior setae. Basal third of mid tibia with large, dark, narrow sensory pit. Tibial spurs 1.3–1.7Χ tibial diameter.
Abdomen.
Ninth tergite large, conceals gonocoxites and gonostyli almost completely; caudal edge straight, without medial cleft. Ninth tergite straight caudally, without cleft, with numerous curved setae apically. Gonocoxites with triangular ventral appendages bearing 2 long, dark apical spurs. Gonostyli short, pointed, curved Slike.
Figs. 48–51.
Ectrepesthoneura
End.
48.
E. succinimontana
,
n.sp.
, holotype PIN 3311/662.
49.
Female genitalia.
50.
E. swolenskyi
,
n.sp.
, holotype AMNH NJ824.
51.
Male genitalia.
MATERIAL:
Holotype
AMNH
NJ 824
, male.
USA
:
New Jersey
, Sayreville; coll.
S. Swolensky
, 1997–1998 (mentioned in
Grimaldi, 2000
: fig. 48h).
ETYMOLOGY: The species epithet is patronymic for the late Steve Swolensky, who collected the specimen.
COMMENTS: The new species differs from other species of the genus in the structure of male genitalia, especially by ventral appendages of gonocoxites bearing dark sclerotized spurs.