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Genus Stirellus Osborn & Ball, 1902


Compiler and date details

27 July 2011 - Murray J. Fletcher

 

Taxonomic Decision for Synonymy

 

Introduction

This genus is widespread around the world and includes numerous species many of which have very similar male genitalia. A comprehensive molecular analysis of the genus is needed to determine whether the apparent similarity in the structures of the male genitalia conceals a more complex generic arrangement. The Australian fauna includes three described species at least one of which is polymorphic in terms of tegmen length. S. fatigandus (Kirkaldy) is widespread in coastal areas of Australia as well as elsewhere in the Oriental region. S. mitis (Kirkaldy) is less common and is known from the Sydney basin of New South Wales with a single record from North Queensland. S. petfordensis was described in 2019 from a single male collected near Petford, a locality west of Cairns in the Wet Tropics of Queensland. An undescribed species is known from the Kununurra region of NE Western Australia.

 

Distribution

States

New South Wales, Northern Territory, Queensland, Tasmania, Victoria, Western Australia


Extra Distribution Information

Formosa.


IBRA and IMCRA regions (map not available)

IBRA

NSW, NT, Qld, Tas, Vic, WA: Australian Alps (AA), Brigalow Belt North (BBN), Brigalow Belt South (BBS), Central Mackay Coast (CMC), Cobar Peneplain (CP), Cape York Peninsula (CYP), Daly Basin (DAB), Darwin Coastal (DAC), Einasleigh Uplands (EIU), Gulf Plains (GUP), Murray Darling Depression (MDD), NSW North Coast (NNC), Sydney Basin (SB), South East Corner (SEC), South Eastern Highlands (SEH), South Eastern Queensland (SEQ), Swan Coastal Plain (SWA), Tasmanian Northern Midlands (TNM), Tasmanian South East (TSE), Tasmanian Southern Ranges (TSR), Victoria Bonaparte (VB), Wet Tropics (WT)

Other Regions

Torres Strait Islands terrestrial, marine & freshwater

Diagnosis

Head about as wide as pronotum, vertex narrow, rarely as wide as the long diameter of an eye, usually longer than its basal width. Front inflated, almost touching eyes above; vertex and front produced into a long, conical point, their margins indistinct. Elytra narrow, about as long as the abdomen; venation as in Athysanus, regular; ovipositor long and narrow, extending beyond the elytra (Osborn & Ball 1902).

The species all appear to have similar male genitalia with the pygofer being triangularly produced and the aedeagus strongly recurved and attenuated to form a long undulating filamentous structure reaching back beyond the basal attachment of the aedeagus.

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
05-Dec-2019 13-Aug-2013 MODIFIED
05-Dec-2019 16-May-2012 MODIFIED
05-Dec-2019 05-Aug-2011 MODIFIED
12-Feb-2010 (import)