Hesperus addisadebaensis SCHEERPELTZ 1971

Hromádka, L., 2012, Revision of the Afrotropical species of the genus Hesperus FAUVEL (Coleoptera: Staphylinidae: Philonthina), Linzer biologische Beiträge 44 (1), pp. 551-589 : 553-554

Hesperus addisadebaensis SCHEERPELTZ 1971 ( Figs 1-3 )

T y p e m a t e r i a l: Holotype: Abessinien, Addis-Abeba, Juni-Juli 1911, // Hesperus addisadebaensis O. Scheerpeltz , [red oblong printed label] ( NHMW).

Redescription: Body length 11.2 mm, length of fore body (to end of elytra) 5.5 mm.

C o l o u r a t i o n: Head and scutellum black, pronotum black-brown, distinctly golden iridescent, elytra red, first four visible abdominal tergites black with posterior margin broadly and whole visible tergites 5-7 yellow-brown. Maxillary and labial palpi yellow-brown, mandibles black-brown, base of antennomeres 2-3 red-yellow, remaining antennomeres black. Legs brown-yellow.

Head wider than long (ratio 46: 37), parallel-sided. Posterior angles obtusely rounded, bearing one black bristle. Clypeus with a short line medially. Eyes flat, shorter than temples (ratio 11: 21). With wide impunctate midline, each side and temporal area with many variably large punctures. Surface with microsculpture consisting of transverse waves.

Antennae short, reaching midlength of pronotum when reclined. Antennomeres 1-4 and 11 longer than wide, antennomeres 5-6 as long as wide, antennomeres 7-10 wider than long.

Pronotum as long as wide, anterior angles conspicuously deflexed, markedly rounded, posterior angles obtusely rounded, base straight. Each dorsal row with ten punctures, with wide impunctate midline, each side with scattered punctures. Surface with microsculpture similar to that on head.

Scutellum very densely and coarsely punctate, diameter of punctures much larger than eye-facets, separated by much less than a puncture diameter in transverse direction.

Elytra longer than wide (54: 51), parallel-sided, punctation fine and dense, diameter of punctures slightly smaller than that on scutellum, separated smaller than puncture diameter. Metatarsus shorter than metatibia (ratio 25: 28), metatarsomere 1 slightly

longer than metatarsomere 5 and slightly shorter than metatarsomeres 2-4 combined.

Abdomen wide, very gradually narrowed posteriad, first three visible tergites with two basal lines, elevated area between lines densely punctate, punctation of tergites dense and relatively coarse, most punctures raindrop-shaped. Surface without microsculpture; setation similar to that on head.

Male. Protarsomeres 1-3 slightly dilated and sub-bilobed, each covered with modified pale setae ventrally, protarsomere 4 narrow. Aedeagus ( Figs 1-3 ).

Female. Unknown to the author.

C o m p a r a t i v e n o t e s: Hesperus addisadebaensis may be distinguished from the similar H. belonuchiformis by the darker antennae, longer eyes, wider pronotum and by the different shape of the aedeagus.

D i s t r i b u t i o n: Ethiopia ( HERMAN 2001).

Figures

Figs 1-3: Hesperus addisadebaensis SCHEERPELTZ 1971: (1) aedeagus, ventral view. (2) aedeagus, lateral view. (3) apex of paramere with sensory peg setae. Figs 4-5: Hesperus africanus BERNHAUER 1915. (4) female tergite X, ventral view. (5) gonocoxite of female genital segment. Figs 6-10: Hesperus anas HROMÁDKA 2008. (6) aedeagus, ventral view. (7) aedeagus, lateral view. (8) apex of paramere with sensory peg setae. (9) female tergite X. (10) gonocoxite of female genital segment. Figs 11-14: Hesperus belonuchiformis BERNHAUER 1915. (11) aedeagus, ventral view. (12) aedeagus, lateral view. (13) apex of paramere with sensory peg setae. (14) male sternite IX.