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The Polyozus-group (Miridae, Phylinae) in
Australia Systematics and host plant associations
Christiane Weirauch Division of Invertebrate
Zoology, American Museum of Natural History, New
York
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Miridae or Plant Bugs

• Orthotylinae Phylinae
• gt 4, 000 described species
• focus of PBI
• several ant mimetic lineages
• mostly phytophagous
• often host-specific

• Miridae
• 10, 000 described species
• rather delicate
• asymmetrical, complex male genitalia

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PBI Project Focus Australia
Species of flowering plants 18,000 known from
Australia, 9,000 from North America
Species of Miridae 2,000 described from North
America, 200 species from Australia

• Depauperate fauna of Miridae?

• Sampling bias?

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Phylinae in Australia
Diversity of Australia largely undescribed
currently ca. 300 species of Phylini recognized
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The Polyozus-group
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Analysis of the Polyozus-group
Analysis 17 ingroup species, 3 outgroup
species 43 morphological characters NONA/Pee-Wee
(hold10000 hold/100 mult100 jump50)
20 spp., 45 characters one of two trees
Pee-Wee
L92 Ci67 Ri84 concavity 6 Fit394.3 3
Fit374.8 1 Fit337.1
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Character support for the Polyozus-group
20 spp., 45 characters one of two trees
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Systematics of Exocarpocoris, n. gen.
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Systematics of Ancoraphylus, n. gen.
tubercle on pygophore
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Systematics of Polyozus
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Host Plant Associations
20 spp., 45 characters one of two trees
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Distribution of Exocarpocoris spp.

• Exocarpocoris spp.
• restricted to E. aphyllus
• E. aurum and E. tantulus sympatric at most
  localities

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Distribution of Ancoraphylus spp.
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Distribution of Polyozus spp.
male genitalia
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Distribution of Polyozus spp.
P. galbanus Eyles Schuh described from New
Zealand
Acacia dealbata introduced to New Zealand from
Australia in the 1870s (Webb 1980)
Polyozus galbanus Australian species introduced
to New Zealand along with its host
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Acknowledgements
PBI team for giving me the opportunity to work on
this project NSF for funding the PBI
project Australias Virtual Herbarium for plant
distributions
Thank you!
Roger McDonald