Baracellus distinctus (Schoutedon, 1933) Published, 2007

WALL, MICHAEL A., 2007, A revision of the Solomonius-group of the stinkbug tribe Halyini (Hemiptera: Pentatomidae: Pentatominae), Zootaxa 1539 (1), pp. 1-84 : 81

publication ID	https://doi.org/ 10.11646/zootaxa.1539.1.1
publication LSID	lsid:zoobank.org:pub:96A2269C-3D7C-498F-914E-0446D52F9988
persistent identifier	https://treatment.plazi.org/id/03CA8F0F-9132-7718-FF1D-7BC1D98BFA73
treatment provided by	Felipe
scientific name	Baracellus distinctus (Schoutedon, 1933)
status	comb. nov.

Treatment

Baracellus distinctus (Schoutedon, 1933) comb. nov.

Auxentius distinctus Schouteden, 1933: 47–48 ; Synave, 1969: 8 (type material)

Comments. Examination of the female holotype of this species revealed that it is clearly not a member of the genus Auxentius or of any genus within the Solomonius -group. The eighth gonocoxae are extremely large and foliaceous compared to the almost obsolete eighth gonocoxae of Auxentius . Male specimens matched to the holotype have apparent parameres that are large and produced outside of the pygophore. The species is tentatively placed in the genus Baracellus based on the female genitalia.

Biogeography of the Solomonius -group.

Most contemporary geological analyses suggest that the geological history of the Indo–Pacific area is a complex assemblage of multiple island arc systems that have on occasion accreted onto continental plates. Northern New Guinea exemplifies this type of geological phenomenon, being composed of a several waves of overthrusted and onramped terranes associated with island arc systems ( Polhemus 1996, and Polhemus and Polhemus 1998). This mobilistic interpretation ( Hamilton 1988) of the region has helped make plausible the distribution patterns of some taxa (see Polhemus 1996 for a review) whose distribution seemed inexplicable under a stabilist interpretation.

Most genera within the Solomonius -group are restricted to specific island arc terranes, a pattern characteristic of taxa whose distribution is heavily influenced by Indo–Pacific tectonics. Solomonius is restricted to the Solomons Arc with one unusual species, S. foetidus , associated with the Papuan Ophiolite ( Figs. 15 View FIGURE 15 , 37 View FIGURE 37 , 38 View FIGURE 38 ). Auxentius is almost entirely restricted to the Sepik Arc of New Guinea ( Figs. 11–13 View FIGURE 11 View FIGURE 12 View FIGURE 13 ). Brizica is distributed across both the Sepik Arc and North New Guinea Terranes, but individual species are generally restricted to one or the other ( Figs. 21 View FIGURE 21 , 23 View FIGURE 23 ). The genus Anchises is the only member with continental distribution, restricted to the Australian continental craton ( Fig. 4 View FIGURE 4 ). Additional investigation into the phylogeny of this group is essential to understanding its origins and historical biogeography.