|
| |
Family
Tachinidae, Subfamily Dexiinae
- This page contains pictures and information about Dexiini Flies
in tribe Dexiini, subfamily Dexiinae (or Proseninae in some
reference) that we found in the Brisbane area, Queensland, Australia.
-
 -
- The Dexiinae mostly are parasitic in larval Coleoptera
(beetle) especially Scarabaeidae. Adults
are usually found resting on tree trunk. Most of them have long legs, with
face elongated under the eyes and often with a well developed facial carina or sharp ridge between the antennae. They
are medium in size and usually drab grey to black in colours.
-
- Flies in tribe Dexiini have the following characteristic;
- - eyes bare,
- - scutellum with three pair of marginal setae,
- - epistome not produce in front of vibrissal insertions,
- - long and slender body form,
- The Dexiini includes species that parasitise mainly larvae of Scarab Beetles or
Long-horned Beetles. Larvae
develop in the host and pupate either within its remains or in the
surrounding.
-
Genus Trichostylum - Black-striped Dexiin Flies
- Flies in this genus can be identified by the following characteristic;
- - facial carina absent,
- - parafacial bare,
- - proboscis short and stout,
- - coastal spine absent,
- - T5 marginal row setae upwards, T6 marginal setae clustered
medially,
- Those flies have contrast black striped patterns on thorax which help to
identified their ID.
-
-
- Black-striped Dexiin Fly I
 
- Trichostylum parafaciale, body length 10mm
- We identified this species by its striped patterns on thorax. Scutellum and
all legs are black in colour. Lower calypter is brownish-white. Abdomen in
narrow egg shape and is creamy-brown with mid black strip. Please chick
on here for more information.
-
-
- Black-striped Dexiin Fly II
- Trichostylum rufipalpe, female, body length 12mm
- We identified this species by its wing veins and striped patterns on
thorax. The fly is medium in size with stout body. It has the long plumose
arista on antenna. Scutellum and all legs are dark brown to black in colour.
Lower calypter is creamy-white. Abdomen in egg shape and is creamy-brown with
narrow mid black strip. Please check this page
for more information.
-
-
  -
Genus Rutilotrixa
- Flies in this genus can be identified by the following characteristic;
- - interfrontal area exposed,
- - facial carina absent but mid-facial elevation present,
- - parafacial haired,
- - proboscis short,
- - abdomen T3-5 marginal setal rows and median discal setae present,
-
- Large Long Legs Dexiin
Fly
  - Rutilotrixa lateralis, body length 15mm
- We sometimes see
different species of large Tachinid flies
rest on a tree trunk, with head facing downwards, seem
waiting for something. Please check this page
for the details.
-
Genus Senostoma
- Flies in this genus can be identified by the following characteristic;
- - facial carina present,
- - proboscis robust and medium long, same or less than head length,
-
- Long Tongue Dexiin
Fly I
- Senostoma sp., body length 10mm
- We found this fly in a few times in Karawatha Forest on Sep to Oct. we
have more pictures and information in this page.
-
-
 -
Genus Prosena
- Flies in this genus can be identified by the following characteristic;
- - facial carina well developed,
- - proboscis elongate and slender, longer than head height,
- - arista long plumose,
-
- Long Tongue Dexiin Fly II
  - Prosena sp., body length 10mm
- Pictures taken in Karawatha Forest mid September. The fly was waiting for
something on the gum tree trunk. This fly did not care about we came very
close to take those photos. Please also visit this page
for more details.
-
- Reference:
- 1. Insects
of Australia, CSIRO, Division of Entomology, Melbourne University
Press, 2nd Edition 1991, p 784.
- 2. Insects of Australia and New Zealand - R. J. Tillyard, Angus
& Robertson, Ltd, Sydney, 1926, p376.
- 3. Family TACHINIDAE - Australian Biological Resources Study, Australian Faunal Directory.
- 4. The systematics of the Australasian Dexiini (Diptera : Tachinidae : Dexiinae) with revisions of endemic genera - DA Barraclough, Invertebrate Taxonomy 1992, 6(5) 1127 - 1371.
- 5. A conspectus of the Tachinidae (Diptera) of Australia, including keys to the supraspecific taxa and taxonomic and host catalogues - R. W. Crosskey, British Museum (Natural History),
Bulletin, Entomology, Supplement 21, 1973.
-
- Back to Top
-
- [ Up ] [ Rutiliini ] [ Dexiini ]
| |
|
