Eupotemus uluguru, Fikáček & Matsumoto & Perkins & Prokin & Sazhnev & Litovkin & Jäch, 2021

Fikáček, Martin, Matsumoto, Keita, Perkins, Philip, Prokin, Alexander, Sazhnev, Alexey, Litovkin, Stanislav & Jäch, Manfred A., 2021, The family Epimetopidae (Coleoptera: Hydrophiloidea): review of current knowledge, genus-level phylogeny, and taxonomic revision of Eupotemus, Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 61 (1), pp. 1-34 : 24

Eupotemus uluguru sp. nov.

( Figs 11G–I , 12D–F )

Material examined. Hඈඅඈඍඒඉൾ:J ( MRAC):ʽHOLOTYPUS //Coll.Mus. Tervuren / Mission Mts. Uluguru / L. Berger, N. Leleup / J. Debecker V / VIII/71 // Tanzanie:Mts.Uluguru / Morogoro Campus Fac. /Agric.Piège. Lum. U.V. / alt. 600 m V-VI/71 // J. Delève det. 1966 / Eumetopus / carinaticollis (Basil.) // HOLOTYPE / Afrometopus / uluguru / P.D. Perkinsʼ. P*ò*©*òඍඒඉൾ: 1 J ( NHMW): ʽTANZANIA: Morogoro / 560 m a.s.l. / light

trap, III-IV.1987 / coll. Pócs & Sontera // Eupotemus / carinaticollis (Bas.) / det. M. Jäch 1999ʼ.

Additional material. Additional specimens from the same collecting event (same collectors, date and locality data) should be deposited in the HNHM but could not be located instantaneously (Gy. Makranczy, pers. comm.).

Differential diagnosis. Very similar to the other species of the E. carinaticollis species group from which it can be reliably distinguished by the male genitalia only. The aedeagus differs from both remaining species in the continuously narrowing parameres which are not widened at apex ( Figs 11G, I ).

Description. Body 2.9 mm long (holotype 2.9 mm) and 1.6 mm wide (holotype 1.6 mm). Dorsal surface black. Habitus and sculpture as in Figs 12D–F ; ridge on elytral interval 3 complete throughout; ridges on interval 5 and 7 interrupted posteriorly. Elytral punctures connected by low elevated line. Aedeagus ( Figs 11G–I ): 0.90 mm long. Parameres ca. 1.8× longer than phallobase, continuously narrowing towards apex, not widened apically. Median lobe 3.0× longer than wide, apical part narrowing in apical third, sides slightly concave subapically. Phallobase basally with narrow asymmetrical manubrium.

Etymology. The species name refers to the Uluguru Mts. where this species was collected. Noun in apposition.

Biology. Unknown, both specimens were collected at light.

Distribution. Both known specimens were collected at the same locality in eastern Tanzania ( Fig. 13B ).

Figures

Fig. 11. Male genitalia of the Eupotemus carinaticollis species group, holotypes.A–C – E. carinaticollis (Basilewsky, 1956); D–F – E. taianus sp. nov.; G–I – E. uluguru sp. nov. A, D, G – dorsal view; B, E, H – lateral view; C, F, I – ventral view.

Fig. 12. Habitus photographs of the species of the Eupotemus carinaticollis species group, holotypes: A–C – E. carinaticollis (Basilewsky, 1956); D–F – E. uluguru sp. nov.; G–I – E. taianus sp. nov.

Fig. 13. Known distribution of Eupotemus species.A – species of E. limicola species group; B – species of E. carinaticollis species group.