Scolytodes catinus 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 catinus Jordal & Kirkendall sp. nov. Figs 28, 31, 34

Type material.

Holotype, female: Costa Rica, Heredia, near Virgen de Socorro, 10°14.4'N, 84°07.5'W, 1475 m, 11 Apr. 2005, L. Kirkendall #050411-1, 8 mm diameter Clusia branch. Allotype, male: same data as holotype. Paratypes: same data as holotype (3). Holotype, allotype, 1 paratype deposited in MNCR, 1 paratype in ZMBN, 1 paratype in USNM.

Diagnosis.

Interstriae 10 weakly carinate to just before level of metacoxa; protibiae with a tiny, additional mesal tooth at the base of lateral tooth 2. Pronotum asperate on anterior third. Metanepisternum with a row of characteristic, broad, plumose setae. Distinguished from S. pumilus Wood, 1969, by the lack of interstrial punctures, less abundant vestiture of the female frons, and the different setae on the metanepisternum.

Description female.

Length 1.7-1.8 mm, 2.6-2.7 × as long as wide; color black. Head. Eyes sinuate, separated above by 2.5-2.6 × their width. Frons weakly impressed on a semi-circular area on median half on lower two-thirds, surface in impressed area punctured, reticulate, dull, vertex shiny, with scant fine punctures; vestiture consisting of fine short setae in impressed area. Antennal club with two obliquely recurved sutures (posterior side procurved) marked by white setae, segment 1 and 2 corneous. Funiculus 5-segmented, segments very short, disc-like. Pronotum reticulate, with fine punctures on posterior two-thirds spaced by 3-4 × their diameter, replaced on anterior one-third by fine asperities. Vestiture consisting of six erect long setae (4 –2– 0). Elytra smooth, shiny, striae not impressed, punctures tiny, spaced by 2-3 × their diameter, with additional microscopic puncture associated near each main puncture; punctures in interstriae absent. Interstriae 10 weakly carinate to just before level of metacoxa. Vestiture consisting of ca 20 erect long setae on odd-numbered interstriae. Legs. Procoxae separated by 0.8 × and mesocoxae 1.1 × the width of one procoxa. Protibiae broadening apically, lateral teeth 1 and 2 of sub-equal size, with 3-6 additional small granules along the lateral edge towards base; a tiny, additional mesal tooth present at the base of lateral tooth 2; protibial mucro obtuse. Meso- and metatibiae with 6 and 5 small socketed lateral teeth on distal half and third, respectively. Ventral vestiture. Setae on metanepisternum broadly plumose, on metasternum long and simple; sclerolepidia small, round scales.

Male.

Similar to female, except frons convex, with slight impression on epistoma; vestiture consisting of a few setae on epistoma.

Key

( Wood 1982). Keys to couplet 53, S. pumilus , but differs as indicated in the diagnosis.

Etymology.

The Latin name catinus is a masculine noun meaning plate or bowl, referring to the smoothly impressed female frons. It is invariable.

Biology and distribution.

This species is only known from the type locality at medium altitude in Costa Rica. Specimens were collected from a thin dead branch on a live Clusia tree along with individuals of the smaller species S. callosus Jordal and Kirkendall (described below).