Scolytodes prolatus 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 : 95-97

Scolytodes prolatus Jordal , sp. nov.

urn:lsid:zoobank.org:act:F7E8C491-2320-4FCB-BF2A-50D050505E99

( Figs 56, 59, 62 )

Type material. Holotype, male: Honduras, Franc. Mor., P.N. La Tigra, 23.2 km N. Tegucigalpa, 1950 m, oak/ cloud forest, 29.06.1994, R. Anderson . Paratype, male: Olancho, La Muralla, 14 km N, La Union , 1510-1550 m, transition cloud for. Litt. Berl., 16– 17.8.1994, R. Anderson. Types deposited in FSCA .

Diagnosis. Interstriae 10 sharply elevated to the level of metacoxa, a faint trace continue to level of ventrite 2; protibiae with one additional mesal tooth just inside the lateral margin between tooth 1 and 2; lateral tooth 2 socketed. Closely related to S. clusiacolens , but the new species has elytral striae more deeply impressed, the male pronotum is strongly dilated, and very fine setae are present only on odd interstriae.

Description, male. Length 2.7–2.9 mm, 2.5 × longer than wide; colour black. Head. Eyes sinuate, separated above by 4.0–4.2 × their width. Frons convex, finely reticulated, dull, smooth with many small, shallow punctures; epistomal area strongly impressed; vestiture consisting of scattered fine setae (in punctures). Antennal club with two obliquely procurved sutures marked by dense short setae. Funiculus 6-segmented. Pronotum very finely reticulated, shiny; punctures small, separated on average by twice their diameter, punctures replaced by fine asperities on anterior one-sixth; anterior row of asperities forming a finely serrated margin. Vestiture consisting of very fine, long, setae (4–2–2, abraded on PT). Elytra smooth, sub-shining, striae narrowly, deeply impressed, punctures slightly elongated, near contiguous on disc, smaller and more widely separated on declivity; interstriae 4–5 × wider than striae, punctures much smaller and widely separated. Vestiture consisting of rows of widely spaced, erect, long, fine setae on odd interstriae, intermixed with minute interstrial and strial setae on declivity.

Legs. Procoxae separated by 0.6¯0.7 × and mesocoxae 0.9–1.0 × the width of one procoxa. Protibiae narrow, distal teeth 1 and 2 of equal length, 4¯5 additional small granules along lateral edge towards base; protibial mucro not present (obtuse). Meso- and metatibiae with 6–7 lateral, socketed teeth on distal half and thirds, respectively. Ventral vestiture. Scattered setae on ventrites, metasternum and metanepisternum fine, simple.

Key (Wood 1982). Keys to couplet 25b, S. clusiacolens Wood , but differ as noted in the diagnosis.

Etymology. The name prolatus is a Latin masculine nominative participle of the verb profero, meaning extending, stretch out or extend, referring to the dilated anterior half of the pronotum.

Biology and distribution. This species is only known from two medium altitude localities in Honduras, in cloud forests dominated by oak. One specimen was collected by extraction from a litter sample in a Berlese funnel. The close relative, S. clusiacolens , breeds in Clusia .

Figures

FIGURES 55–63. Dorsal, lateral and front view of the holotype of Scolytodes longipilus (55, 58, 61), female S. prolatus (56, 59, 62), and female S. bicarinatus (57, 60, 63).