Australosema Heraty & Burks, 2017
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publication ID |
https://dx.doi.org/10.3897/jhr.55.11482 |
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publication LSID |
lsid:zoobank.org:pub:0E1B0A14-F871-4CD8-9F29-10B255677621 |
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persistent identifier |
https://treatment.plazi.org/id/9A5268EF-48B5-4293-9562-46A528062AAE |
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taxon LSID |
lsid:zoobank.org:act:9A5268EF-48B5-4293-9562-46A528062AAE |
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treatment provided by |
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scientific name |
Australosema Heraty & Burks |
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gen. n. |
Australosema Heraty & Burks gen. n. Figs 1-6 View Figures 1–6 , 7-12 View Figures 7–12 , 13-14 View Figures 13–14
Type species.
Eucharis valgius Walker: 412-414. Heraty 1994: 79-81, figs 122, 124, 131, 192, 221, 238, 248, 262-263.
Etymology.
Random combination of letters and referring to the distribution; gender feminine.
Discussion.
Defined by Heraty (1994) as the Orasema valgius group for two species from Australia, and was distinguished from the glabra and koghisiana groups in part by an at least partly reticulate face and a labrum with 4 digits (Heraty, 1994). Australosema politurae and related species expand the definition of the group to include an almost or completely smooth face. Originally recognized to include two species, Australosema synempora (Heraty) and A. valgius (Walker). Herein we add two new species, A. politurae and A. verghetta .
Diagnosis.
Separated from Orasema s.s. by a relatively weak or absent basal petiolar flange, and smooth lateral areas on the propodeal disc in combination with a rugose-areolate or reticulate median channel. Distinguished from other Old World genera by the head subtriangular in frontal view (Fig. 2 View Figures 1–6 ); scrobal depression evenly impressed and lacking parallel channels or dorsal depressions; dorsal occipital margin abrupt and rounded or carinate; funicle 7-segmented; labrum with 4-digits; mesonotum with only minute setae; mesoscutal lateral lobes and frenum sculptured or smooth; transscutal articulation complete and relatively straight; propodeal disc with lateral areas at most weakly sculptured (Fig. 5 View Figures 1–6 ), but usually smooth (Fig. 11 View Figures 7–12 ), and with a broad sculptured median channel; prepectus foveate and tightly articulated with pronotum ventrally (Fig. 12 View Figures 7–12 ); fore wing with basal area bare and specular area either bare or pilose (Figs 1 View Figures 1–6 , 7 View Figures 7–12 ), wing disc with very short setae; postmarginal vein much longer than stigmal vein and reaching about half distance to wing apex; petiole base truncate with weak basal flange (Fig. 5 View Figures 1–6 ); antecostal sulcus present and smooth, at most weakly foveate laterally; first valvula of ovipositor with 3-4 lateral teeth and robust oblique subapical carina. Male scape lacking ventral pores.
Similar genera that have a smooth face and smooth lateral regions on the propodeal disc include Leiosema , Matantas , and Zuparka . Australosema is distinguished from Leiosema and Zuparka by several features, including the absence of a parallel channeled scrobes with dorsal depressions, 3-4 large teeth on the ventral (first) valvula of the ovipositor instead of 9-10 minute teeth, and absence of ventral pores on the male scape. It differs from Matantas primarily by having a 4-digitate rather than 6-8 digitate labrum.
Host association.
Myrmicinae : Pheidole ( Girault 1913 [175], Heraty 2000).
Distribution.
Four species. Australia including Tasmania.
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.