Scolytodes seriatus Jordal & Kirkendall

Jordal, Bjarte H. & Kirkendall, Lawrence R., 2019, Rainforest and cloud forest Scolytodes (Curculionidae, Scolytinae, Hexacolini) from the Arthropods of La Selva inventory in Costa Rica: new species, new synonymy, new records, ZooKeys 863, pp. 1-34 : 1

Scolytodes seriatus Jordal & Kirkendall sp. nov. Figs 20, 23, 26

Type material.

Holotype, female: Costa Rica, Prov. Heredia, 6 km ENE Vara Blanca, 1950-2050 m, 10°11'N, 84°07'W, 21 Feb. 2002, INBio-OET-ALAS transect, 20/TN/15/008, INB0003223280. Allotype, male: same data as holotype, except 9 Apr., transect 20/M/06/066, INB0003221635. Paratypes: same data as holotype except 21 Apr., transect 20/TN/15/028, INB0003223644 (1); 13 Apr., transect 20/RG/DBM/010, INB0003657266 (1). Holotype and allotype deposited in MNCR, 1 paratype in USNM, 1 paratype in ZMBN.

Diagnosis.

Interstriae 10 sharply carinate to near apex; protibiae with a tiny, sharp, additional mesal tooth near tarsal insertion. Distinguished from S. clusiacolens Wood, 1967 and S. prolatus Jordal, 2018 by the stouter body shape and subobovate elytra, by the smaller body size, and by the regular placement of fine setae only on interstriae 3, 5, 7 and 9.

Description female.

Length 2.1-2.3 mm, 2.3-2.4 × as long as wide; color black. Head. Eyes entire, separated above by 2.5-3.0 × their width. Frons impressed on a semi-circular area from just below upper level of eyes to epistoma, surface finely, densely punctured, finely reticulate; vestiture consisting of fine short setae. Antennal club with two obliquely procurved sutures marked by white setae, segment 1 and 2 mainly corneous, segment 3 setose. Funiculus 6-segmented. Pronotum smooth, finely reticulate, with fine punctures spaced by 1-2 × their diameter. Vestiture consisting of six erect long setae (4 –2– 0). Elytra smooth, shiny, striae distinctly impressed, punctures in rows spaced by 2 × their diameter; punctures in interstriae in irregular rows, shallow, smaller and more widely spaced. Interstriae 10 sharply carinate to near apex. Vestiture consisting of erect long setae, on interstriae 3, 5, 7 and 9. Legs. Procoxae separated by 0.5 × and mesocoxae 0.9 × the width of one procoxa. Protibiae narrow, lateral teeth 1 and 2 of sub-equal length, with 4-5 additional sharp small teeth along the lateral edge towards base; a tiny, sharp, additional mesal tooth present near tarsal insertion; protibial mucro short and curved, almost obtuse. Meso- and metatibiae with 6-7 small socketed lateral teeth on distal half and third, respectively. Ventral vestiture. Setae on metanepisternum trifid or bifid, on metasternum long and simple; sclerolepidia rounded scales.

Male.

Similar to female except frons convex, with distinct abrupt impression on epistoma; eyes separated above by 3.3-3.6 × width of the eye; vestiture on frons consisting of few short setae.

Key

( Wood 1982). Keys to couplet 6 but do not match due to the combination of a long interstriae 10 and the presence of a mesal protibial tooth. The same applies to S. clusiacolens , its closest relative.

Etymology.

The Latin name seriatus is a Latin masculine adjective meaning seriate, referring to the deeply impressed rows of closely set punctures in the striae.

Biology and distribution.

This species is only known from the type locality in Costa Rica at high altitude.