Pseudohesperus conradti ( Bernhauer, 1912 ) Hromádka, 2010

Hromádka, Lubomír, 2010, Revision of the Afrotropical species of the genus Pseudohesperus, with taxonomic notes on other Afrotropical species of the subtribe Philonthina (Coleoptera: Staphylinidae), Acta Entomologica Musei Nationalis Pragae 50 (2), pp. 495-516 : 502-503

Pseudohesperus conradti ( Bernhauer, 1912) comb. nov.

( Figs. 6–10 )

Philonthus (Eccoptolonthus) conradti Bernhauer, 1912: 206 .

Hesperus longicornis Cameron, 1950 , syn. nov.

Type locality. Cameroon, Lolodorf [= village of Lolo].

Type material examined. Philonthus conradti : HOLOTYPE: ♀, ‛S. O. Kamerun: Lolodorf, L. Conradt, 1895. Chicago NHMus, M. Bernhauer collection // Philonthus conradti Bernhauer , Type [ochre oblong label, handwritten]’ ( FMNH).

Hesperus longicornis: COTYPE : 1 ♀, ʻANGOLA, Ngauyanga // Hesperus longicornis COTYPE Cameron, M. Cameron-Bequest B.M.1955 -147ʼ ( BMNH).

Additional material examined. ANGOLA: 1 spec., Ngauyanga ( BMNH). NIGERIA: 1 spec., Ibadan, 1.v.1956 ( NMUK), 1 spec., Aroche, viii.1945 ( NMUK). ZIMBABWE: 3 spec., Kutsaga, near Harare airport, 18.vi.1997, W. Rossi ( LHPC),

Redescription. Body length 7.9 mm, length of fore body (to end of elytra) 3.8 mm.

Colouration. Head black, pronotum, scutellum, elytra and abdomen black-brown, posterior margin of all tergites narrowly brown-red, maxillary palpi, labial palpi and antennomeres 1 and 2 yellow-brown, remaining antennomeres black-brown, mandibles brown, femora and tarsi yellow-brown, tibiae darker. Scutellum bluish iridescent, abdomen slightly golden-red iridescent.

Head transverse, wider than long (ratio 27: 20), inconspicuously narrowed posteriad. Posterior angles obtusely rounded with two long black bristles. Eyes longer than temples (ratio 9: 7). Four coarse punctures present between eyes, distance between medial interocular punctures three times as long as distance between medial and lateral puncture, median punctures slightly shifted anteriad. Inner margin of eyes and entire temporal area with variably large punctures, vertex of head largely impunctate. Dorsal surface without appreciable microsculpture.

Antennae slender and long, exceeding posterior margin of pronotum by antennomeres 10 and 11 when reclined. All antennomeres longer than wide. Relative lengths of antennomeres 1–11: 1 = 11 units, 2 = 5 units, 3 = 6 units, 4 = 5 units, 5–7 = 6 units, 8 = 5.5 units and 9–11 = 5 units.

Pronotum wider than long (ratio 32: 30), parallel-sided, each anterior angle distinctly deflexed, vaguely obtusely rounded, posterior angles conspicuously rounded. Wide area along midline impunctate, each dorsal row consisting of four coarse and large, irregularly placed punctures and width many smaller punctures, lateral portions of pronotum with scattered punctures. Surface without microsculpture.

Scutellum densely and finely punctate. Punctures as large as eye-facets, separated by one puncture diameter in transverse direction.

Elytra combined wider than long (ratio 42: 38), hardly widened posteriad. Punctation fine and dense. Punctures somewhat larger than eye-facets, distance between punctures mostly smaller than their diameter. Surface without microsculpture; setation brown-yellow.

Legs. Metatarsus as long as metatibia. Relative length of metatarsomeres 1–5: 1 = 7 units, 2 = 4 units, 3 = 3.5 units, 4 = 3 units and 5 = 7 units.

Abdomen wide, gradually narrowed towards apex from visible tergite III. First three tergites with two basal lines, elevated area between lines impunctate. Punctation at base of all tergites slightly coarser than that on elytra, gradually becoming finer and sparser towards posterior margin of each tergite. Surface between punctures without microsculpture; setation similar to that on elytra.

Male. Protarsomeres 1–4 simple, with few modified pale setae laterally. Sternite VIII ( Fig. 9 ), sternite IX ( Fig. 10 ), aedeagus ( Figs. 6–8 ).

Female. Protarsomeres 1–3 simple, each covered with modified pale setae ventrally.

Differential diagnosis. Pseudohesperus conradti is similar to P. apsilus sp. nov., but may be distinguished from the latter by shorter antennae and eyes, paler antennomere 1 and a different shape of the aedeagus; it differs from P. proselytus by a wider head, longer antennae, paler antennomere 1 and denser punctation of the scutellum, pronotal sides and abdomen.

Distribution. Cameroon and Zimbabwe.

Figures

Figs.1–12. 1–5 – Pseudohesperus apsilus sp. nov. (1 – aedeagus, ventral view; 2 – aedeagus, lateral view; 3 – apical portion of paramere with sensory peg setae, ventral view; 4 – apical portion of male sternite VIII, ventral view; 5 – male sternite IX, ventral view). 6–10 – Pseudohesperus conradti (Bernhauer, 1912) (6 – aedeagus, ventral view; 7 – aedeagus, lateral view; 8 – apical portion of paramere with sensory peg setae; 9 – apical portion of male sternite VIII, ventral view; 10 – male sternite IX, ventral view). 11–12 – Pseudohesperus proselytus (Herman, 2001) (11 – female tergite, ventral view; 12 – gonocoxite of female genital segment).