Hesperus burgeoni BERNHAUER 1928

Hromádka, L., 2012, Revision of the Afrotropical species of the genus Hesperus FAUVEL (Coleoptera: Staphylinidae: Philonthina), Linzer biologische Beiträge 44 (1), pp. 551-589 : 557-558

Hesperus burgeoni BERNHAUER 1928 ( Figs 15-17 )

T y p e m a t e r i a l: Holotype: Democratic Republic of the Congo: Watsa , xi.1919, L. Burgeon, Musée du Congo, Haut Uele, // Hesperus burgeoni Bernhauer TYPUS [ochre oblong label handwritten] ( FMNH).

R e d e s c r i p t i o n: Body length 12.8 mm, length of fore body (to end of elytra) 6.7 mm.

C o l o u r a t i o n: Head and pronotum black, middle of scutellum reddish, sides narrowly black, elytra red-yellow, abdomen black, posterior margin of visible tergites 1-4 wide yellow-red, anterior two thirds of tergite 5 black, posterior third of tergite 5 and whole tergites 6-7 yellow-red. Maxillary and labial palpi, and legs yellow-red, base of antennomere 2 red-yellow, remaining antennomeres and mandibles black-brown. Pronotum slightly golden iridescent.

Head as long as wide, distinctly narrowed posteriad, posterior angles obtusely rounded, punctation sparse. Eyes small, temples twice as long as eyes (ratio 12: 6), punctation sparse, surface with fine microsculpture.

Antennae long, reaching posterior margin of pronotum when reclined. Antennomeres 1-8 and 11 longer than wide, antennomeres 9-10 as long as wide. Antennomere 1 more than twice as long as antennomere 11, antennomere 2 shorter than antennomere 3.

Pronotum as long as wide, distinctly narrowed posteriad. Anterior angles obtusely rounded bearing several short black bristles, posterior angles markedly rounded. Pronotum with broad impunctate midline. Each dorsal row with 16-18 irregularly spaced punctures, each side with several coarse punctures. Surface with microsculpture similar to that on head.

Scutellum coarsely and densely punctate, punctures twice as large as eye-facets, interstices very small.

Elytra as long as wide, very slightly widened posteriad. Punctation finer and sparser than that on scutellum. Surface between punctures without microsculpture; setation long and yellow.

Legs. Metatibia longer than metatarsus (ratio 51: 44). Metatarsomere 1 shorter than metatarsomere 5.

Abdomen wide, from visible tergite III slightly narrowed posteriad. First three visible tergites with two basal lines, elevated area between lines punctate. Punctation of visible tergites much finer and sparser than that on elytra. Surface without microsculpture; setation similar to that on elytra.

Male. Protarsomeres 1-3 slightly dilated and sub-bilobed, each covered with modified pale setae ventrally, protarsomere 4 narrower than preceding ones. Aedeagus ( Figs 15- 17 ).

Female. Unknown to the author.

C o m p a r a t i v e n o t e s: Hesperus burgeoni may be distinguished from similar H. oriolus sp. nov. by the larger number of punctures in the dorsal rows of the pronotum, different colouration of the abdomen and by the different shape of the aedeagus.

D i s t r i b u t i o n: Democratic Republic of the Congo, Uganda ( HERMAN 2001).

Figures

Figs 15-17: Hesperus burgeoni BERNHAUER 1928. (15) aedeagus, ventral view. (16) aedeagus, lateral view. (17) apex of paramere with sensory peg setae. Figs 18-22: Hesperus cafiodes FAUVEL 1889. (18) aedeagus, ventral view. (19) aedeagus, lateral view. (20) apex of paramere with sensory peg setae. (21) female tergite X. (22) gonocoxite of female genital segment. Figs 23-25: Hesperus depressus BERNHAUER 1908. (23) aedeagus, ventral view. (24) aedeagus, lateral view. (25) apex of paramere with sensory peg setae. Figs 26-29: Hesperus sericeicollis (CAMERON 1950). (26) aedeagus, ventral view. (27) aedeagus, lateral view. (28) apex of paramere with sensory peg setae. Fig. (29): male sternite IX. Fig 30: Hesperus fraternus BERNHAUER 1928. (30) gonocoxite of female genital segment.