Palaechthina Brinck, 1948,

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: 26

publication ID

http://dx.doi.org/10.3897/zookeys.273.4116

persistent identifier

http://treatment.plazi.org/id/52A95056-8738-93A5-BC46-DA4AEE8D14C0

treatment provided by

ZooKeys by Pensoft

scientific name

Palaechthina Brinck, 1948
status

stat. n.

Subtribe Palaechthina Brinck, 1948  stat. n.

Palaechtini Brinck, 1948:

43; Bouchard et al. 2011: 603 (incorrect original stem formation, not in prevailing usage).

Type genus.

Palaechthus  C. O. Waterhouse, 1884 (by original designation, as Palaechtus  , incorrect subsequent spelling).

Diagnosis.

Rostrum slender, as long as or longer than pronotum (except for some species of Listronotus  where the rostrum is shorter than pronotum); scrobes long, deep, sharply bordered, reaching eyes; scape usually short (not reaching anterior margin of eye when resting in scrobe); pronotum usually subclyndrical or subcircular; elytra oblong-oval to elongate-oval.

Biology.

Most of the species of Palaechthina  are associated to aquatic or semiaquatic plants, being found in wet or damp conditions ( May 1970; O’Brien 1977, 1981; Marvaldi 1994; Morrone and O’Brien 2000). In contrast with the remaining Listroderini  , larvae usually lead a more endophytic way of life inside the stems of several aquatic plants (Oberprieler, in press).

Included taxa.

This subtribe includes the genera Anorthorhinus  , Gunodes  , Haversiella  , Inaccodes  , Listronotus  , Neopachytychius  , Palaechthus  , Palaechtodes  , Steriphus  and Tristanodes  . Anorthorhinus  and Steriphus  are Australian; Gunodes  , Inaccodes  , Palaechthus  , Palaechtodes  and Tristanodes  are distributed in the Tristan da Cunha-Gough islands; and the remaining three genera are found in the Americas: Haversiella  and Neopachytychius  in South America and Listronotus  has a disjunct distribution in South and North America.

Key to the genera of Palaechthina