Scolytodes bipilosus Jordal, 2018

Jordal, Bjarte H., 2018, Hidden gems in museum cabinets: new species and new distributional records of Scolytodes (Coleoptera: Scolytinae), Zootaxa 4504 (1), pp. 76-104 : 89

Scolytodes bipilosus Jordal , sp. nov.

urn:lsid:zoobank.org:act:35A942A9-DBEE-4DB5-AB6A-A61DB97CE6B3

( Figs 37, 40, 43 )

Type material. Holotype: Panama, Panama Prov , 8 km NE Cerro Jéfe, 27 Mar. 1976, 700 m, H.P. Stockwell. HT deposited in TAMU.

Diagnosis. One of very few species with the combination of a long interstriae 10 which is sharply elevated to the level of ventrite 4, and protibiae having a small additional mesal tooth near tarsal insertion. Elytra with interstrial spatulate setae on posterior half, intermixed with fine strial and interstrial setae.

Description (female?). Length 1.6 mm, 2.3 × longer than wide; colour brown. Head. Eyes entire, separated above by 1.4 × their width. Frons convex, surface finely reticulate on upper half, smooth and impunctate below on median half; vestiture consisting of about 30 scattered short setae around margin of impunctate area and on epistoma. Antennal club small, with three slightly procurved sutures on anterior face, two sutures on posterior face. Funiculus 5-segmented. Pronotum weakly reticulated, with shallow, small punctures almost reaching anterior margin. Vestiture consisting of 10 erect setae (4–4–2) and short fine semi-recumbent setae arising from punctures. Elytra smooth and shiny, striae not impressed, punctures irregular, small and shallow, separated in regular rows by 2 × their diameter; interstriae 2¯4 × wider than striae, punctures minute, in rows on disc, confused on declivity. Vestiture consisting of recumbent fine strial and interstrial setae in rows, increasing in length and progressively confused posteriorly, with additional curved spatulate setae on each interstriae on the posterior half of elytra. Legs. Procoxae and mesocoxae separated by 0.8 × the width of one procoxa. Protibiae narrow, distal teeth 1 and 2 of equal length, with 5 tiny additional short teeth or granules along the edge towards base; protibial mucro short, curved posteriorly. Meso- and metatibiae with 7 and 6 lateral, socketed teeth on distal half and third, respectively. Ventral vestiture. Setae on anterior part of metasternum and all setae on metanepisternum trifid, elsewhere simple.

Key (Wood 1982). Keys to couplet 6, with no further match (to couplet 1 in Wood 2007), due to the mismatch between a long interstriae 10 and a mesal tooth present on protibia.

Etymology. Composed by the Latin nominative, masculine adjective pilosus, meaning hairy or shaggy, and the prefix bi -, referring to the two types of elytral setae on interstriae and striae, respectively.

Biology and distribution. This species is only known from the type locality in Panama, at approximately 600¯ 800 m altitude (Cerro Jefe).

Figures

FIGURES 37–45. Dorsal, lateral and front view of the holotype of Scolytodes bipilosus (37, 40, 43), female S. asperatus (38, 41, 44), and female S. flavifrons (39, 42, 45).