Glyptoma amazonense, Irmler, 2015

Irmler, Ulrich, 2015, The neotropical genus Glyptoma ERICHSON, 1839 with descriptions of new species and a key to the species (Coleoptera: Staphylinidae: Osoriinae), Beiträge Zur Entomologie = Contributions to Entomology 65 (2), pp. 297-325 : 305-306

publication ID

https://doi.org/ 10.21248/contrib.entomol.65.2.297-325

publication LSID

lsid:zoobank.org:pub:6E48386B-4B75-4ADF-8667-042F92582386

persistent identifier

https://treatment.plazi.org/id/050D87D8-FFAB-5F1B-3FCE-E356FDD02F1F

treatment provided by

Carolina

scientific name

Glyptoma amazonense
status

spec. nov.

Glyptoma amazonense spec. nov.

( Figs 10A, B View Figs 7–12 , 21D View Figs 21 )

Type material: male, Holotype: Brazil, Amazonas , Manaus, 26 km NE of Manaus, Reserva Ducke, collected by flight intercept trap, 1995–1996, #BMNH{E} 2003-84 ( BMNH) ; Paratypes: 2 females with same data as holotype ( BMNH) ; same location, 25 km NNE Manaus , under bark in secondary forest, 120 m elev., female, 26.7.1973, leg. R. T. Schuh ( AMNH) .

Diagnosis: The species mostly resembles G. guianense spec. nov. The differentiating characters between the two species are listed there.

Description: Length: 2.5–2.6 mm. Colouration: Black; legs and antennae dark brown; tarsi lighter yellow brown. Head: 0.35 mm long, 0.49 mm wide; eyes prominent; nearly twice as long as temples; temples behind eyes slightly narrowed; nearly parallel; then, shortly narrowed to neck; cheek-like; posterior edge triangularly emarginate; adjacent to eyes with short groove; sides in front of eyes parallel up to base of antennae; parallel part approximately 1.5 times as long as eyes; then abruptly narrowed in sinuate curve to anterior edge of clypeus; anterior edge of clypeus one third as wide as distance between base of antennae; pseudo-punctures large and slightly elongate; in irregular transverse lines; first line between base of antennae consisting of 6 punctures; interstices between pseudo-punctures restricted to narrow ridges; few setiferous punctures on clypeus and on ridges between pseudo-punctures; longitudinal groove behind eyes dividing vertex from temples; groove deeper at neck than close to eyes; isodiametric microsculpture deep and wide; surface matt.

Antennae slightly longer than head and pronotum combined; width of antennomeres slightly increasing from second antennomere to apical antennomeres; second antennomere slightly narrower that first and nearly twice as wide as long; third antennomere nearly quadrate; following antennomeres slightly wider than long; second to tenth antennomeres with few long yellow setae; setae as long as width of antennomeres.

Pronotum: 0.40 mm long, 0.46 mm wide; widest near middle; narrowed to anterior angles in smooth convex curve; anterior angles widely rounded; narrowed posterior angles in distinct concave curve; posterior angles obtusely rounded; with extremely deep pseudo-punctures; thus, in dorsal aspect lateral edge denticulate; on disc, pseudo-punctures deeper and larger than laterally; close pair of large pseudo-punctures near middle; behind this pair another pair of still larger punctures separated by bulge in width of anterior pair; mostly, interstices between pseudo-punctures restricted to narrow ridges; few setiferous punctures on ridges; at posterior angles with deep impression; coarse microsculpture isodiametric; on disc, partly finer and longitudinal; surface matt.

Elytra: 0.60 mm long, 0.59 mm wide; widest in middle; sides slightly curved from shoulders to obtuse posterior angles, but nearly parallel; shoulders distinct; obtusely rounded; anterior edge slightly concave; discal and lateral carinae indistinct; lateral carina nearly absent; suture line deep; continuing at posterior edge to posterior angles; between suture line and discal carina two irregular rows of pseudo-punctures; between discal carina and lateral carina three irregular rows of pseudo-punctures; pseudo-punctures extremely large; interstices between pseudo-punctures irregularly wide; partly restricted to narrow ridges; partly half as wide as diameter of pseudopunctures; few setiferous punctures on ridges between pseudo-punctures; irregular microsculpture distinct; mostly meshes isodiametric, partly longitudinal; within suture line, microsculpture denser; total surface matt.

Abdomen with one transverse row of large pseudopunctures; setiferous punctures on ridges between pseudo-punctures; microsculpture distinct; surface matt. Aedeagus with nearly rectangular angle between basal lobe and apical lobe; apical lobe sinuate in front of acute apex; several sensillae laterally; paramere short and thin with short apical seta.

Etymology: The species name derived from the Brazilian state Amazonas, where the species was found.

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Glyptoma