Rainforest and cloud forest Scolytodes (Curculionidae, Scolytinae, Hexacolini) from the Arthropods of La Selva inventory in Costa Rica: new species, new synonymy, new records

Quantitative collecting efforts over the last several decades in Costa Rica have resulted in many new species of insects. The Arthropods of La Selva projects included collecting from a typical lowland Neotropical forest and up an altitudinal transect, and has provided many valuable samples of insects, spiders and mites potentially new to science. We describe 18 new species in the bark beetle genus <em>Scolytodes</em> Ferrari, 1867, 14 of which were collected during this project: <em>S. angulus</em> Jordal &amp; Kirkendall, <strong>sp. nov</strong>., <em>S. sufflatus</em> Jordal &amp; Kirkendall, <strong>sp. nov</strong>., <em>S. squamatifrons</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. comosus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. spatulatus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. seriatus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. profundus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. catinus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. fimbriatus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. sulcifrons</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. planifrons</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. porosus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. mundus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. callosus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. parvipilus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. plenus</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, <em>S. niger</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong>, and <em>S. simplex</em> Jordal &amp; Kirkendall, <strong>sp. nov.</strong> One species, <em>Scolytodes minutissimus</em> Schedl, 1952, is redescribed to match the holotype. We give new Costa Rica records for <em>S. costabilis</em> Wood, 1974, which is the correct name for <em>S. obesus</em> Wood, 1975 (<strong>syn. nov</strong>.). We report Costa Rica as a new country record for six species: <em>Scolytodes clusiacolens</em> Wood, 1967, <em>S. crinalis</em> Wood, 1978, <em>S. culcitatus</em> (Blandford, 1897), <em>S. libidus</em> Wood, 1978, <em>S. reticulatus</em> (Wood, 1961), and <em>S. spadix</em> (Blackman, 1943). From a closely related genus, we provide the first record for Central America (and only the second collection) of <em>Pycnarthrum fulgidum</em> Wood, 1977.