A review of the genus Geraldus Fitton (Hymenoptera: Ichneumonidae: Banchinae), with description of a new species
Author
Broad, Gavin R.
text
Journal of Natural History
2010
2010-05-24
44
23 - 24
1419
1425
http://dx.doi.org/10.1080/00222931003678800
journal article
10.1080/00222931003678800
1464-5262
5209729
Geraldus cambrensis
Fitton, 1987
(
Figure 1
)
For comparison with
Geraldus fittoni
sp. nov.
, which is described below,
G. cambrensis
is briefly re-described here.
Figure 1.
Geraldus cambrensis
, female, Argentina, Neuquén. Scale bar 1 mm.
Female
Fore wing length 7.0–
7.3 mm
; areolet pointed dorsally, roughly rhombic but with first abscissa of
M
slightly shorter than second abscissa; vein
cu-a
separated from vein
Rs&M
by 0.4 times length of
cu-a
; hind wing with abscissa of vein
Cu
1 between
M+Cu
and
cu-a
0.17 times as long as
cu-a
. Clypeus basally convex, ridge-like, then abruptly flattened, with apex notched (
Figure 2A
). Antennal scrobes deep and shining with some carinulae near antennal base; antenna stouter than in
G. fittoni
sp. nov.
, first flagellomere 4.7 times as long as broad. Head with temples narrowed behind eye, shorter than length of eye in dorsal view. Legs with spiny tibiae, hind tarsus also spiny; all tarsal claws with subapical accessory tooth (
Figure 2C
); hind leg very long (slightly longer than body), with large, robust hind coxa (as long as first metasomal tergite); inner hind tibial spur long, 0.6 times length of basitarsus, outer spur 0.4 times as long as basitarsus. Head and thorax regularly punctate; meoscutum with shallow notauli, extending back to level of front edge of tegula; propleurum with posteriorly directed lobe; mesopleurum with epicnemial carina not quite reaching front edge of mesopleurum, sternaulus present on posterior half of mesopleurum; propodeum strongly rugose, with longitudinal striation posteromedially; submetapleural carina complete, strongly produced anteriorly as a lobe; pleural carina complete, posterior transverse carina present laterally; propodeal spiracle elongate. Metasoma mostly impunctate, shining; first tergite lacking carinae, sub-basally raised, with spiracle at basal 0.4 and glymma deep and basal; sclerotized part of first sternite reaching 0.2 times length of tergite; laterotergites large, coriaceous, colourless, overlapping ventrally; metasoma rather stout, sixth and seventh tergites transverse, eighth tergite not visible dorsally, ovipositor sheaths not projecting beyond metasoma apex.
Figure 2. (A)
Geraldus cambrensis
, head; (B)
Geraldus fittoni
, head; (C)
Geraldus cambrensis
, mid-tarsal claws; (D)
Geraldus fittoni
, mid-tarsal claws; (E)
Philogalleria bobbyi
, paratype female, Tasmania (Collinsvale), mid-tarsal claws.
Colour.
Black, with the following parts yellow: annulus on middle of antenna (covering five to eight flagellomeres), sub-basal patch on mandible, clypeus (except basal ridge), vertical stripes along inner and outer orbits, fore leg from trochantellus to tarsus, midleg from femur to tarsus and inner surface of trochantellus, hind leg on basal 0.4 of hind tibia and third to fifth hind tarsomeres, and ovipositor sheaths. Patch in middle of mandible and tegula red, first metasomal tergite black on basal fifth, remainder red with second and third tergites varying from entirely red to third and posterior half of second dorsally black. Wing membrane slightly infumate, venation dark brown/black.
Male
Unknown.
Material examined
In addition to the
holotype
female described by
Fitton (1987)
, another
four specimens
, all female, are now known.
Three
were collected relatively recently in
Argentina
by
Colin
and
Marta Vardy
and the third was collected in
Chile
(only just over the border from
Argentina
) by the collectors of the
holotype
and was found in a drawer of unidentified
Banchinae
in
BMNH
.
Holotype
female,
Argentina
, Terr.
Rio Negro
,
L. Nahuel Huapi
,
Puerto Blest
,
2–3 December 1926
,
F. and M. Edwards
;
two females
,
Argentina
,
Neuquén
,
8 km
north of
San Martin
de los
Andes
,
1000 m
,
16–22 November 1997
,
Malaise trap
,
C. & M. Vardy
;
one female
, same data but deposited in
MACN
;
one female
,
Chile
,
Llanquihue prov.
,
Casa Pangue
,
4–10 December 1926
,
F. and M. Edwards.