Austrocyphon, Zwick, 2013

Zwick, Peter, 2016, Australian Marsh Beetles (Coleoptera: Scirtidae). 9. The relations of Australasian Ypsiloncyphon species to their Asian congeners, additions, mainly to Petrocyphon and Prionocyphon, and a key to Australian genera of Scirtinae, Zootaxa 4085 (2), pp. 151-198 : 188-190

publication ID

https://doi.org/ 10.11646/zootaxa.4085.2.1

publication LSID

lsid:zoobank.org:pub:E41CB99C-5177-47A7-A424-2453D27E48F0

DOI

https://doi.org/10.5281/zenodo.6076997

persistent identifier

https://treatment.plazi.org/id/F50D3F20-FF89-D361-EBE6-F890FC50FE61

treatment provided by

Plazi

scientific name

Austrocyphon
status

 

The Austrocyphon tribulator- complex

( Figs 95–98 View FIGURES 95 − 98 )

New material studied. 1♂: 11.45S 142.35E QLD Heathlands dump 7June-25 July 1992 P.Zborowski, E.Nielsen Malaise #2 open forest GoogleMaps ; 1♂: 11.45S 142.35E QLD Heathlands- Dump site 18 Aug-18 Sep 1992 Malaise Trap P.Zborowski & L.Miller GoogleMaps ; 3♂: 13.44S 143.20E QLD 11km WbyN of Bald Hill McIlwraith range 27 June-12 July 1989 T.A.Weir 520m search party campsite / ex light trap GoogleMaps . 1 ♂: Bellender Ker NP, QLD 1.5km ENE Broken Nose 28 June 1992 C.Reid beating rainforest vegetation 500m (all ANIC).

Austrocyphon tribulator Zwick, 2013 is a small (BL ~ 2 mm) yellowish to light brown species that is widespread in Queensland. It differs from other members of the A. adelaidae -group by the wide, completely bare plate of T8 and mainly by the X-shaped arrangement of the sclerites representing T9. The basal apodemes converge and eventually meet, and from the meeting point issues a pair of divergent caudal sclerites. In the typical morph, the caudal sclerites are flat lanceolate blades with fine asperities on the surface ( Fig. 95 View FIGURES 95 − 98 ).

Some aberrant specimens were recorded when the species was first described. They differed mainly by the narrowness of the caudal T9 sclerites ( Fig. 96 View FIGURES 95 − 98 ). Shapes of T8, S9 and the penis also differed but were not uniform among the aberrant individuals from several localities. Some more variations have now been observed ( Fig. 97 View FIGURES 95 − 98 ), further increasing the diversity of morphs.

The significance and cause of the heterogeneity are unknown. For the time being the specimens are regarded as members of an unresolved complex, including a single individual (from Broken Nose) whose T9 sclerites have an approximately circular cross section and appear club shaped ( Fig. 98 View FIGURES 95 − 98 ).

ANIC

Australian National Insect Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scirtidae

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