the cynipoid genus paramblynotus - American Museum of Natural ...

36 BULLETIN AMERICAN MUSEUM OF NATURAL HISTORY NO. 304
– Lower face flat (fig. 38), not protruding in
lateral view. Pronotal crest not gradually
raised anteriorly into a conspicuous ridge
(fig. 39). Speculum without longitudinal costae
(fig. 39). Median propodeal area distinctly
delimited by percurrent lateral propodeal
carinae, posteriorly not foveoate-reticulate
(fig.41) .............. trisetosus group
5. Occiput distinctly carinate vertically. Pronotal
crest not distinctly raised into a conspicuousridge
.............. apeosus group
– Occiput glabrous or vertically carinate. If
occiput distinctly carinate vertically, then
pronotal crest always distinctly raised into
a conspicuous ridge . . . . . . . . . . . . . . . . 6
6. Pronotal crest always low anteromedially and
mesoscutum always convex dorsally (figs. 49,
57). Scutellar foveae divided by strong submedian,
longitudinal carinae (figs. 50, 58).
Posterior margin of metasomal T7 of female
impressed, distinctly exposing T8 (fig.
53).................. ruficollis group
– Pronotal crest low (figs. 66, 88, 97) or raised
into a conspicuous peak anteromedially
(fig. 75) and mesoscutum dorsally convex
(fig. 66) or flat (fig. 76). Scutellar foveae
usually not divided by strong submedian,
longitudinal carinae. Posterior margin of
metasomal T7 of female straight or smoothly
curved, usually covering T8 entirely (figs. 70,
79, 92, 98). Rarely the scutellar foveae are
subdivided and, if so, the pronotal crest
always raised into a conspicuous peak anteromedially,
T7 always covering T8, and
mesoscutum flat dorsally . . punctulatus group
TAXONOMY OF SPECIES GROUPS
VIRGINIANUS GROUP
figures 22–29
This species group currently contains only
one species from eastern North America.
DIAGNOSTIC CHARACTERS: Size relatively
small. Antenna filiform, not distinctly
enlarged apically. Female antenna has 13
segments with F1 distinctly shorter than F2.
All flagellomeres have placodes, which are
short, not as long as the segments, and are
densely distributed on all medial to distal
segments (fig. 24). Eye extended laterally,
distinctly beyond outer margin of gena.
Antennal scrobe defined by apparent lateral
carina. Median frontal carina simple, and
present only between antennal sockets
(figs. 22, 23). Occiput glabrous. Pronotal
crest not raised dorsomedially. Dorsal pronotal
area glabrous. Lateral surfaces of
pronotum evenly curved anteroventrally,
foveate-reticulate, without secondary transverse
costae and punctures, and not separated
dorsomedially by an extended, less sculptured
anterior area. Lateral pronotal carina
distinct, but not reaching pronotal crest
dorsomedially. Mesoscutum transversely carinate
with distinct foveae set in between
(fig. 25). Mesoscutellum sloped posteriorly;
posteriorly broadly rounded; dorsally foveate-reticulate.
Scutellar sulcus is divided into
two foveae by median longitudinal carina.
Axillar area without conspicuous pubescence
(figs. 25, 26). Mesopleural triangle well defined
by a smoothly curved carina. Upper
mesopleuron glabrous (fig. 25); speculum
with setigerous punctures posterodorsally
(fig. 1). Median mesopleural impression
straight, narrowed toward ends, and with
two to three vertical carinae. Metepisternum
alveolate-reticulate in upper half and pubescent
ventrally (fig. 25). Wings slightly smoky;
Rs-M from middle of basalis. Apical teeth of
metatibia long and pointed (fig. 28, 29). First
metatarsomere without apical protuberance
and shorter than the combined length of the
second to fifth metatarsomeres. Lateral
propodeal carinae simple, not raised into
strong keel or process, and median propodeal
area usually with a median longitudinal
carina, or two submedian longitudinal carinae,
crossed by a modified transverse carina
(fig. 26). T6 is at least twice as long as other
terga along dorsal margin. T7 of female with
posterior margin curved dorsolaterally, distinctly
exposing T8 (fig. 27).
Paramblynotus virginianus, new species
figures 1, 22–29
FEMALE:
Length 3.5–5 mm. Body black
entirely except tibiae and tarsi of legs, which
are yellow to yellowish brown. Wings slightly
smoky, somewhat darker across middle.
Face, gena, and vertex foveate-reticulate
(figs. 22, 23); foveae on vertex longitudinally
set in rows in the spaces between eye and
posterior ocelli (figs. 22, 23). Median frontal
carina only shortly present between antennal
sockets. Anterior tentorial pit small, but distinct.
Clypeo-pleurostomal sulcus and epistomal sulcus
form a smoothly curved arch; clypeus