Tazarcus ogygia, Grebennikov, 2020

Grebennikov, Vasily V., 2020, Tazarcus, a new phylogenetically unplaced genus of two flightless weevils with metapleural ridge from the Eastern Arc Mountains, Tanzania (Coleoptera: Curculionidae: Molytinae), Zootaxa 4766 (3), pp. 421-434 : 426

Tazarcus ogygia sp.n.

Figs 1 , 4 , 6

http://zoobank.org/ urn:lsid:zoobank.org:act:EA01F50C-A10F-4903-B45E-F6D1320F6B7C

Type locality. Tanzania, Rubeho Mts. at Ipondelo vil., S6.8389° E36.5756, 1875 m.

Description. Body larger (length of pronotum and elytra in dorsal view 3.4 mm, n=1); lateral body contour in dorsal view clearly constricted between pronotum and elytra; lateral sides of posterior half of pronotum and elytra at middle parallel; disc of pronotum not completely covered by dense whitish pilosity; procoxae separated by distance smaller than half their length; elytral punctures on striae large, about 0.2–0.5 of interstrial width; elytral interstriae with row of semi-erect setae shorter than width of interstriae; female genitalia: 6E–F; DNA: Table 2 .

Material examined. Holotype ( CNC), female, “ TANZANIA, Rubeho Mts. at Ipondelo vil., 6°50’20”S 36°34’32”E, 21.xii.2011, 1875m, sift.10, V.Grebennikov”, “CNCCOLVG00003182”

“CNCCOLVG00007289”, “CNCCOLVG00007290”.

Distribution. This species is known only from Rubeho, the southern part of the EAM.

Etymology. The species epithet is a Latinized Greek mythical name of Ogygia, an island of the nymph Calypso, who detained Odysseus for several years on his return voyage, and it is a noun in apposition.

Figures

FIGURE 1. Distribution of the genus Tazarcus gen. nov. detected in three (among 14, indicated by circles) sampled Tanzanian forests. Map designed using online SimpleMappr tool (Shorthouse 2010).

FIGURE 4. Maximum Likelihood inference phylogram. Terminal labels consist of a specimen ID (last four digits of the format CNCCOLVG0000XXXX, see Table 2), followed by the taxonomic name of maximal precision. Digits at internodes are bootstrap values (shown only for clades with>50%). Three clades with specimens possessing metapleural ridges are numbered 1–3 and illustrated to scale. HT and PT designate holotypes and paratypes, respectively.

FIGURE 6. Tazarcus ogygia sp. nov., female holotype. A–D: habitus, dorsal (A), left lateral (B), ventral (C) and left frontolateral (D); E–F: female genital chamber (left apical hemisternite IX is broken and missing), dorsal (E) and ventral (F).