Goniagnathus centralis (Evans) Evans, 2008
publication ID |
https://doi.org/ 10.5281/zenodo.180619 |
DOI |
https://doi.org/10.5281/zenodo.6234863 |
persistent identifier |
https://treatment.plazi.org/id/EA30878F-D300-FF99-7E91-814CFF30F823 |
treatment provided by |
Plazi |
scientific name |
Goniagnathus centralis (Evans) |
status |
comb. nov. |
Goniagnathus centralis (Evans) View in CoL , new combination
( Figures 5–6, 11–12 View FIGURES 7 – 12 , 19–25 View FIGURES 19 – 28. G )
Deltocephalus centralis Evans 1966: 242 View in CoL
Arawa centralis (Evans) View in CoL , Fletcher 2004: 53
Holotype: female, Standley Chasm, McDonnell Ranges, NT, vi.1939, A. Musgrave (AM: K68459 View Materials ).
Other material examined: Northern Territory: 1 specimen (lacking abdomen) mounted with holotype (AM); 2 females (mounted together) same data as holotype but 28.vi.1939 (AM); New South Wales: 1 female, Lower Portland, 2.x.1939, A. Musgrave. ex J.W. Evans collection, donated 1991 (AM); Victoria: 1 male Tatura, 23.xi.1987, J.A. Osmelak, ex tomatoes ( ASCU); 1 female, Tatura, 29.xii.1982, J.A. Osmelak ( ASCU)
Colour: Face and crown of head testaceous with mid brown or pinkish brown speckling. Pronotum with dark brown speckling arranged to form four to five vague longitudinal stripes. Tegmen pale translucent brown with alternating dark and pale spotting along the longitudinal veins.
Morphology: Macropterous. Length: males (N=1) 3.9 mm, females (N=5) 4.19 mm (range 3.8–4.5 mm).
Male genitalia: Pygofer ( Figure 19 View FIGURES 19 – 28. G ) with prominent triangular tooth dorsally on posterior margin above rounded posterior lobe. Group of three macrosetae in centre of posterior lobe, cluster of short, stubby macrosetae on posteroventral corner and fine setae over apical and ventral areas. Subgenital plates ( Figure 20 View FIGURES 19 – 28. G ) broadly rounded posteriorly. Parameres ( Figure 21 View FIGURES 19 – 28. G ) with apical section serrulate, roundly emarginate apically with outer lobe longer and narrower than rounded inner lobe; basal section broadly quadrate. Aedeagus evenly curved, tapered base to apex in lateral view ( Figure 22 View FIGURES 19 – 28. G ) with preapical gonopore surmounted by pair of finely acuminate terminal processes bearing line of strong serrations on anterior margin ( Figures 23, 24 View FIGURES 19 – 28. G ).
Female: Pregenital sternite ( Figure 25 View FIGURES 19 – 28. G ) with posterior margin roundly emarginate to median, short, apically emarginate prominence.
Notes: Fletcher (2004) transferred this species into the genus Arawa Knight (Tribe Athysanini ) on the basis of its short broad appearance and vertex rounding into the face. However, the structure of the male genitalia, particularly the fused subgenital plates, connective fused with base of aedeagus and the apparently disarticulated paramere indicates that it should be placed in Goniagnathus . The determination that the single male specimen in the list above represents Evans’ species, which was described entirely from females, was based on the size and colour of the specimens in comparison with other species as well as on the fact that the female from Tatura matches the holotype female in the shape of the pregenital sternite. Examination of a male from the type locality would provide additional evidence that the male from Tatura is indeed G. centralis . This species has a prominent dorsal tooth on the apical margin of the male pygofer, a feature also found in G. pectinatus .
ASCU |
Agricultural Scientific Collections Unit |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Class |
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Order |
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Family |
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Genus |
Goniagnathus centralis (Evans)
Fletcher, Murray J. & Zahniser, James N. 2008 |
Arawa centralis
Fletcher 2004: 53 |
Deltocephalus centralis
Evans 1966: 242 |