Seventh International Congress of Hymenopterists

7 th International Congress of Hymenopterists
20-26 June 2010, Kszeg Hungary
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capacity 91%. Conclusively, no statistically significant relationship was observed between
the nest's water absorption capacity and the thickness of fiber.
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Surface ultra-sculptural studies on the antenna, mouth parts and external genitalia of
the Carpenter ant, Camponotus compressus (Hymenoptera: Formicidae)
Deepak D. Barsagade
Department of Zoology, RTM Nagpur University, Nagpur 440033 India; dr_ddbars@rediffmail.com
The antenna in all polymorphic forms of carpenter ant, Camponotus compressus (Fabricius)
(Hymenoptera: Formicidae) is of a genniculate type. The antenna consists of a basal scape
ball, pedicel and various numbers of flagellomeres. The SEM study shows the scape ball
covered with three types of basiconical sensilla, SB- I, SB- II and SB- III in all castes of
adults. The scape shaft contains sensilla trichoidea (ST) in all polymorphs.
On the pedicel sensilla trichoidea are commonly distributed in female, male and worker antenna
while sensilla basiconica has been noticed only in the female. In female and workers, flagellum
content ten numbers of flagellomeres while eleven flagellomeres in the antenna of male. On the
flagellum in female and male, sensilla trichoidea curvata, sensilla trichoidea, sensilla basiconica
and sensilla chaetica while in worker sensilla trichoidea curvata and sensilla trichoidea are found.
The mouth parts are adopted for grasping the prey and feeding. The labrum is the fringe, plate like
consists of ST and SB in female and male but only ST in workers. The mandibles are large and
powerful. The dorsal surface of mandibles consists of sensilla trichoidea, DT-I, DT -II and DT-III
while on the ventral side VT-I, VT-II and ventral basiconica (VB) in female and workers, while
VB absent in male. Each mandibles consists four incisors and three molar teeth in female and
worker while two incisors teeth in male. The ST present on cardo, stipes and palps while papillae
are present on anterior part of galea of maxillae in male, female and worker. The maxillary palps
covered with ST. Three types of ST are present on the mentum and submentum of labium. The
glossa is large tongue like structure in the worker, covered with SB-I, SB-II and acanthae. On the
labial palp, ST-I, ST-II and sensilla trichoidea curvata (STC) are found on all segment while,
microtrichia MT- I and MT- II are present on first segment in workers only.
The male genitalia consist of a basal plate apically. A pair of outer gonocoxites, a pair of middle
volsellae and inner penis wall is extended at the long appendicular structure. The gonocoxites
consists of basal segments basimere and distal region telomere. The female external genetalia is
greatly reduced in queen and worker ants. The IX terga and sterna covered with trichoid sensilla
differentiated in to DT-I, DT-II on dorsal surface and VT-I, VT-II on ventral surface. The
cuticular wall of anus consists of variable numbers cuticular setae radiating peripherally with a
retractile sting.
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Morphological and molecular analysis of Vanhornia leileri Hedqvist (Proctotrupoidea,
Vanhorniidae), a neglected European parasitoid of eucnemid beetles
Hannes Baur 1 *, Dieter Doczkal 2 , & Manuel Schweizer 3
1 Department of Invertebrates, Natural History Museum, Bernastrasse 15, 3005 Bern, Switzerland;
hannes.baur@nmbe.ch
2 Gaggenau, Germany
3 Department of Vertebrates, Natural History Museum, Bernastrasse 15, 3005 Bern, Switzerland
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