Macrostyphlina, Morrone, 2013

Morrone, Juan J., 2013, The subtribes and genera of the tribe Listroderini (Coleoptera, Curculionidae, Cyclominae): Phylogenetic analysis with systematic and biogeographical accounts, ZooKeys 273, pp. 15-71 : 21

publication ID	https://dx.doi.org/10.3897/zookeys.273.4116
persistent identifier	https://treatment.plazi.org/id/8B9D0E20-B0CA-18A5-E738-7523E22344CB
treatment provided by	ZooKeys by Pensoft
scientific name	Macrostyphlina
status	subtr. n.

Treatment

Macrostyphlina subtr. n.

Type genus.

Macrostyphlus Kirsch, 1889.

Diagnosis.

Scrobes long, deep, sharply bordered, reaching eyes, with suprascrobal keel; elytra oblong-oval, with intervals usually flat, lacking anteapical tubercle.

Included taxa.

This new subtribe, which basically corresponds to the Macrostyphlus generic group of Morrone (1994c, 1997a), includes the genera Adioristidius , Amathynetoides , Andesianellus , Macrostyphlus , Nacodius and Puranius . All these genera are distributed in South America, in the Andean region and the South American Transition Zone ( sensu Morrone 2006).

Key to the genera of Macrostyphlina

1	Postocular lobes present	2
-	Postocular lobes absent	4
2	Pronotum transverse to strongly transverse	Puranius ( Fig. 19 View Figures 18–26 )
-	Pronotum subcircular or subcylindrical	3
3	Pronotum subcircular with subparallel flanks, disc smooth, polished; metanepisternal sutures present, complete; elytra with intervals flat	Amathynetoides
-	Pronotum subcylindrical, disc rugose; metanepisternal sutures posteriorly fused or obliterated; elytra with intervals convex	Adioristidius ( Fig. 18 View Figures 18–26 )
4	Vestiture consisting of subcircular scales and setae; elytra with small, rounded tubercles	Macrostyphlus
-	Vestiture consisting of seta-like scales and setae or only setae; elytra lacking tubercles	5
5	Vestiture consisting of seta-like scales and setae; eyes large, slightly convex; pronotum disc smooth, polished; basal elytral margin not raised	Nacodius
-	Vestiture consisting of setae only; eyes very small, microphthalmic (8 or fewer facets), flat; pronotum disc rugose; basal elytral margin raised, subcarinate	Andesianellus