Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae)
Author
Klopfstein, Seraina
text
Zootaxa
2014
2014-05-22
3801
1
1
143
journal article
45701
10.11646/zootaxa.3801.1.1
86799ab1-401c-405c-9122-a1e96d72fc0e
1175-5326
249944
E5F8C489-37F4-4A76-8E25-EFC65CDCA1D7
Campocraspedon
Uchida 1957
Type
species.
Campocraspedon satoi
Uchida 1957
Diagnosis.
Females can readily be distinguished by the dorsoventrally depressed metasoma with very strongly concave hind margins of the tergites, a combination unique among the Palaearctic genera.
Campocraspedon
shares with
Daschia
and
Xestopelta
a clypeus with a thick apical margin which is protruding when viewed from the side.
Face coriaceous and matt, without vertical impressions but with central area often clearly elevated; in females entirely black, in males entirely yellow or with a central black stripe. Clypeus with apical margin thick, clypeus thus convex and protruding when viewed in profile. Antenna with apical flagellomeres wider than long, without tyloids and without long setae. Mesoscutum with notauli comparatively long, reaching about one third of length of mesoscutum, sometimes shallow; yellow shoulder marks absent or small; mesoscutum and mesopleuron smooth and with small punctures, sometimes with some coriaceous sculpture; epicnemial carina sometimes indistinct or interrupted behind the fore coxae. Propodeum with carinae partly or fully reduced, enclosing only lateral areas or no areas at all but often rugose; propodeal spiracle inconspicuous; scutellum only carinate basally. Fore wing areolet absent; hind wing with 2–3 basal hamuli.
Hind
tibia white with a dark apex and subbasal spot in
Campocraspedon annulitarsis
, orange in
Campocraspedon caudatus
. Female metasoma dorsoventrally depressed and elongated, tergites 3 to 7 with hind margins concave, extending further back laterally than dorsally, more so in females but obvious also in males; tergites with subapical transverse impressions sometimes weakly indicated on first and second tergite. First tergite without median dorsal carinae. Second tergite with spiracle dorsal, above lateral fold, third tergite with spiracle below or behind the fold. Metasoma black. Ovipositor sheaths 0.3 times as long as hind tibia, not compressed, about circular in cross-section, fully enclosing ovipositor; basally smooth, apically with dense and conspicuous setae. Males with tergites 9 and 10 fused as a syntergum, sternite 9 about 1.5 times wider than long, emarginated apically, thus forming two lobes, their outer corner with an acute angle.
Phylogeny.
The genus
Campocraspedon
belongs to the
Diplazon
genus group and is probably monophyletic, as retrieved in a recent molecular analysis including the two Western Palaearctic species. Morphologically, it is closest to
Daschia
, for which molecular data are still missing.
Distribution.
Holarctic. Besides the two Western Palaearctic species,
Campocraspedon
includes the Eastern Palaearctic
Campocraspedon elongatus
Nakanishi
and
Campocraspedon satoid
Uchida
, and the Nearctic
Campocraspedon foutsi
(Cushman)
and
Campocraspedon truncatus
Dasch.
Biology
. Nothing is known about the biology of the species, but the peculiar shape of the female metasoma is probably an adaptation to reach hosts that live inside galls or similar structures.
Key to species
1.
Hind
tibia and first tarsomere white with apices dark. Female antenna usually with 18 flagellomeres. Male face entirely yellow and metasoma usually entirely black.......................................
Campocraspedon annulitarsis
(Hedwig)
-
Hind
tibia orange, apically dark. Female antenna usually with 17 flagellomeres, only rarely with 18. Male face yellow but often with a black median stripe arising from below antennal sockets, and with hind margins of tergites 2 to 4 often yellowmarked................................................................
Campocraspedon caudatus
(Thomson)