Cephennomicrus endroedyi, Jałoszyński, Paweł, 2013

Jałoszyński, Paweł, 2013, The first record of the tribe Cephenniini in South Africa, with new species of Cephennomicrus Reitter and Cephennodes Reitter (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 3683 (4), pp. 411-426 : 421-422

Cephennomicrus endroedyi sp. n.

( Figs. 14 , 18–19 , 24–25, 29)

Type material. Holotype: REPUBLIC OF SOUTH AFRICA (Eastern Cape Prov.): 3, three labels: "Transkei: coast / Dwesa for. res. / 32.17S - 28.50E " [white, printed]; " 26.2.1985; E-Y: 2168 / grassnetting, dusk / leg. Endrödy-Younga" [white, printed]; " CEPHENNOMICRUS / endroedyi m. / det. P. Jałoszyński, '13 / HOLOTYPUS' [red, printed] ( TMSA).

Diagnosis. Elytral apices modified, each with large and shallow pit located in subapical region and a tiny tubercle located almost on elytral sutural margin anterior to pit; aedeagus with rapidly narrowing short apical region; internal armature composed of long median tubular structure surrounded at each side by elongate sclerite; parameres with several non-modified setae.

Description. Body of male ( Fig. 14 ) moderately strongly convex, elongate, distinctly constricted between pronotum and elytra, brown with slightly lighter appendages, covered with yellowish vestiture. BL 1.05 mm.

Head broadest at large, strongly convex and coarsely faceted eyes, HL 0.13 mm, HW 0.26 mm; vertex and frons confluent, non-modified, in median part only slightly convex; frontoclypeal region anterior to eyes subtrapezoid; supraantennal tubercles only slightly raised but distinct; punctures on head dorsum moderately deep but large, dense and with sharply marked margins, separated by spaces subequal to puncture diameters; setae extremely short and sparse, barely discernible. Antennae long and slender, AnL 0.48, with three distal antennomeres distinctly enlarged and forming slender club; all antennomeres distinctly elongate except for IX which is nearly as long as broad; XI 2.2x as long as broad, distinctly broader than X.

Pronotum subtrapezoid, broadest near anterior fourth; PL 0.28 mm, PW 0.35 mm. Anterior margin nearly straight; anterior corners rounded but distinct; lateral margins strongly rounded in anterior third and nearly straight in posterior half, strongly converging towards obtuse and blunt hind pronotal corners; posterior margin nearly straight, barely noticeably emarginate in middle; base of pronotum with fine, shallow and relatively diffused antebasal transverse groove connected to small but deep pit at each end and with one pair of shallow and small lateral ante-basal impressions located at posterior pronotal corners. Punctures and setae on pronotal disc similar to those on frons and vertex.

Elytra more convex than pronotum, oval, broadest near anterior third; EL 0.65 mm, EW 0.48 mm, EI 1.37; humeral calli well-marked, each delimited from adsutural region by shallow and small basal impression in which basal elytral fovea is well-visible; apical region of each elytron modified, in subapical part with large but shallow pit located closer to suture than to elytral apex, accompanied anteriorly by tiny tubercle located almost on elytral sutural margin. Vestiture uniform, composed of similar setae as those on pronotum; punctures similarly dense as those on pronotum but much shallower. Hind wings well developed.

Legs moderately long and slender; all tibiae slightly curved in distal third.

Aedeagus ( Figs. 18–19 , 24–25) stout; AeL 0.35 mm; median lobe in ventral view with short, gradually narrowed subtrapezoid apical part, apex broadly rounded; internal armature simple, with a pair of darkly sclerotized lateral elongate structures embracing lightly sclerotized median tube; parameres slender, each with four setae.

Female. Unknown.

Distribution. Eastern RSA, Eastern Cape Prov. ( Fig. 29 ).

Etymology. Cephennomicrus endroedyi is named in honor of the late Sebastian Endrödy-Younga, the collector of this species.

Remarks. The shape and structures of the aedeagus of Cm. endroedyi are unique and sufficient to identify this interesting species. This is the only known Cephennomicrus with the membranous area on the ventral wall of median lobe divided into lateral halves. Moreover, the unusually modified elytral apices make this species easy to identify. Similar modifications can be found only in Cm. transkeianus , a species known from the same Dwesa Forest where also Cm. endroedyi was collected. However, these two species have not only clearly different aedeagi, but they also markedly differ in the body shape and cannot be confused.

Figures

FIGURES 13 – 15. Dorsal habitus of holotype males. Cephennomicrus ubomboensis sp. n. (13); Cephennomicrus endroedyi sp. n. (14); Cephennomicrus transkeianus sp. n. (15).

FIGURES 16 – 21. Aedeagi of holotype males in ventral (16, 18, 20) and lateral (17, 19, 21) views. Cephennomicrus ubomboensis sp. n. (16 – 17); Cephennomicrus endroedyi sp. n. (18 – 19); Cephennomicrus transkeianus sp. n. (20 – 21).

FIGURES 28 – 29. Distribution of continental Afrotropical Cephenniini (South Africa magnified in right panel). 28 ― genus Cephennodes (a ― C. leonensis Castellini; b ― C. atewaensis Jałoszyński; c ― C. nsukkaensis Jałoszyński; d ― C. bundibugyoensis Jałoszyński; e ― C. glabella Castellini; f ― C. ruandae (Cauchois); g ― C. indifferens Besuchet; h ― C. basilewskyi Besuchet; i ― C. leleupi Besuchet; j ― C. zanzibaricus (Schaufuss); k ― C. marginatus Besuchet; l ― C. zulunatalensis Jałoszyński; m ― C. sodwanaensis Jałoszyński; n ― C. lucipetus Jałoszyński; o ― C. mtubatubanus Jałoszyński); 29 ― genus Cephennomicrus (p ― Cm. zoiai Castellini; r ― Cm. perpusillus (Reitter); s ― Cm. ubomboensis Jałoszyński; t ― Cm. endroedyi Jałoszyński; u ― Cm. transkeianus Jałoszyński.