Scolytodes porosus 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 porosus Jordal & Kirkendall sp. nov. Figs 38, 41, 44

Type material.

Holotype, presumably female: Costa Rica, Prov. Heredia, 9 km NE Vara Blanca, 1450-1550 m, 10°14'N, 84°06'W, 6 Apr. 2005, INBio-OET-ALAS transect, #050406-3 [ex Clusia , L. Kirkendall, leg]. Paratype female: same data as holotype, except 8 Mar. 2005, 15/M/15/040, Finca Murillo, INB0003669571. Holotype deposited in MNCR, 1 paratype in USNM.

Diagnosis.

Interstriae 10 carinate to level of metacoxae; protibiae with an additional mesal tooth near tarsal insertion. Similar to S. minutus Wood, 1981, with the combination of deep large punctures on pronotum and elytra, and spatulate shape of elytral setae, but differs from S. minutus by the larger size, black color, and the smooth and more elongated pronotum.

Description female(?)

Length 1.5-1.6 mm, 2.7 × as long as wide; color dark brown to black. Head. Eyes entire, separated above by 2.6-2.7 × their width. Frons convex, with few shallow tiny punctures, surface shiny, reticulate on epistoma and vertex. Vestiture consisting of sparse fine setae on lower frons, denser on epistoma. Antennal club with two transverse sutures marked by short setae, segments 1 and 2 corneous, segment 3 setose. Funiculus 6-segmented. Pronotum shiny, with large deep punctures spaced by less than their diameter. Vestiture consisting of 8 longer erect setae (4 –2– 2), on the anterior part additional fine short setae. Elytra smooth, shiny; striae not impressed, punctures large, deep, separated in rows by less than their diameter, smaller on declivity; interstriae as broad as striae, punctures much smaller than in striae, widely spaced. Interstriae 10 carinate to level of metacoxae. Vestiture consisting of erect interstrial setae which are bristle-like near base of elytra and spatulate on posterior part and declivity, and fine short recumbent setae in striae. Legs. Procoxae separated by 0.4 × and mesocoxae 0.6 × the width of one procoxa. Protibiae broadening distally, lateral teeth 1 and 2 of equal size, tooth 2 socketed and exposed, with 2-3 additional small teeth along the lateral edge towards base; an additional mesal tooth present near tarsal insertion; 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 trifid to broadly plumose, on metasternum mainly simple, bifid near episternal suture; sclerolepidia broad plumose scales.

Male(?).

Presumably identical to the female. Sex of holotype is not determined but is identical to the female paratype with one elytron (exposing seven visible tergites).

Key

( Wood 1982). Keys to couplet 25, with no further match.

Etymology.

The Latin name porosus is a masculine adjective, meaning porous, referring to the densely and deeply punctured pronotum and elytra.

Biology and distribution.

This species is only known from the high altitude type locality in Costa Rica. One individual was collected in a Malaise trap, the other was dissected from a Clusia branch.