Cephennium fairchildi, Stevanović, Miroslav, 2014

Stevanović, Miroslav, 2014, Study of the genus Cephennium Müler & Kunze, 1822 (Coleoptera, Staphylinidae, Scydmaeninae) from the Balkan Peninsula. Part II. New species of the subgenus Cephennium s. str., Zootaxa 3838 (3), pp. 287-309 : 290-293

Cephennium (s. str.) fairchildi sp. n.

( Figs. 6–9 )

Type material studied. (2 ♂) Holotype: SERBIA: ♂, ” Srbija, Kopaonik pl., Jaram, 1550 m, 29.10.2009, leg. M. Stevanović“ (w, ph) / ” HOLOTYPUS, Cephennium (s. str.) fairchildi sp. n., det. M. Stevanović 2009“ (r, p) ( MSNS). Paratype (1 ♂): SERBIA: ” Srbija, Kopaonik pl., Jošanička spa, 16.06.2009, leg. M. Fairchild “ (w, ph) / ” PARATYPUS, Cephennium (s. str.) fairchildi sp. n., det. M. Stevanović 2009.“ (r, p) ( MSNS).

Diagnosis. Frontoclypeal region almost flat, lacking puncturation, puncturation on vertex very fine and sparse; pronotum subrectangular; antennomere VI subquadrate; in males metaventrite with shallow, subtrapezoidal median impression, metaventral process slightly broader than 1/3 of maximum metaventral width, posteromesal margin strongly cancave with lateral projections slightly longer than broad; aedeagus in ventral view with subtrapezoidal, pointed apex and shallow lateral subapical constriction.

Description: Male. Body length 1.35–1.39 mm, moderately convex, brown, tarsi and mouth parts light brown, mandibles brown with black apices, setation yellowish.

Head broadest across moderately small eyes; length 0.15–0.16 mm, width 0.26–0.28 mm; frontoclypeal region relatively long, subtrapezoidal, almost flat; vertex slightly convex; supraantennal tubercles weakly raised. Frontoclypeal region without puncturation, punctures on vertex very fine and sparse; setation short, sparse, suberect. Length of antennae 0.56–0.58 mm; antennomere I subcylindrical, 1.4 times as long as broad, II subcylindrical, 1.2 times as long as broad, antennomeres III–V slightly longer than broad, VI subquadrate, VII–VIII subtrapezoidal, 1.1 times as long as broad, IX–X transverse, 1.3 times as broad as long, XI subconical, 1.3 times as long as broad.

Pronotum subrectangular, moderately convex, widest near middle, length 0.42–0.43 mm, width 0.49–0.50 mm, with broadly rounded anterior margin; sides microserrate, weakly rounded in anterior third and slightly convergent in posterior half; posterior corners blunt. Puncturation very fine, moderately sparse, composed of small and shallow punctures; setation moderately long, sparse, suberect to erect.

Elytra oval, elongate, moderately convex, length 0.78–0.80 mm, width 0.54–0.56 mm, EI 1.43–1.44; widest slightly anterior to middle; apical margins of elytra almost straight. Each elytron with small, single basal fovea located closer to scutellum than to humerus; humeral carina very short. Puncturation relatively fine, punctures shallow, distance between punctures 1.2–2.5 times of their diameter. Setation moderately long, suberect to erect.

Metaventrite with shallow subtrapezoidal median impression, sparsely punctured, distance between punctures 0.5–1.2 times of their diameter, with short and sparse setation; metaventral process slighty broader than 1/3 of maximum metaventral width, posteromesal margin strongly cancave; lateral projections slightly longer than broad, apex of each forming sharp angle with pointed tip.

Aedeagus ( Figs. 6–7 ) length 0.44–0.46 mm, in ventral view with subtrapezoidal, pointed apex and shallow lateral subapical constriction, each paramere with very long apical seta; endophallus as in Fig. 8 .

Legs moderately long and slender; protibiae as in Fig. 9 .

Female. Unknown.

Distribution. Serbia (Kopaonik Mts.).

Etymology. Species dedicated to Martin Fairchild , a collector of the type material.

Remarks. The new species is similar to C. fallax sp. n., but it can be distinguished by the following characters: 1) colour of the body, 2) in males the metaventrite with shallow subtrapezoidal median impression, while in C. fallax with a shallow median oval transverse impression and 3) a different structure of the aedeagus.

Cephennium (s. str.) sladjanae sp. n. ( Figs. 10–13 )

Type material studied. (5 ♂) Holotype: BULGARIA: ♂, ” Bulgaria, Malashevska Mts., W. mon. [monastery] ”St. Ilija“, 790 m, 02.10- 04.11.2003, leg. B. Gueorgiev“ (w, p) / ” Cephennium sp.n., (p) Cl. Besuchet, det. 2006“ (w, ph) / ” HOLOTYPUS, Cephennium (s. str.) sladjanae sp. n., det. M. Stevanović 2006.“ (r, p) ( NMNHS). Paratypes: (4 ♂): BULGARIA: 2 ♂, ” Bulgaria, Malashevska Mts., W. mon. [monastery] ”St. Ilija“, 790 m, 02.10- 0 4.11.2003, leg. B. Gueorgiev“ (w, p); 1 ♂, ” Bulgaria, Samskoz“ (w, h) / ” Typus “ (r, p) / ” humile n. sp., Cl. Besuchet, det. II 1957 “ (w, ph). SERBIA: 1 ♂, ” Srbija, Dimitrovgrad, Petrlaš, pećina [cave] ”Tmna dupka“, 0 8.09.2001, leg. S. Stevanović“ (w, p). All paratypes bear the following label: ” PARATYPUS, Cephennium (s. str.) sladjanae sp. n., det. M. Stevanović 2006“ or ”... 2014“ (r, p) ( MSNS, HNHM).

Diagnosis. Frontoclypeal region without puncturation; punctures on vertex fine, very sparse, well-marked; pronotum semielliptical; elytra with relatively fine puncturation, puncures slightly larger than those on pronotum; in males metaventrite moderately concave in middle, metaventral process narrower than 1/3 of maximum metaventral width, posteromesal margin cancave with lateral projections slightly longer than broad; aedeaus in ventral view with broadly subtrapezoidal apical part, gradually tapering to pointed apex.

Description. Male. Body length 1.13–1.17 mm, moderately convex, brown, tarsi and mouth parts yellowish, mandibles light brown, setation yellowish.

Head broadest across moderately small eyes; length 0.14–0.15 mm, width 0.24–0.25 mm; frontoclypeal region subtrapezoidal, slightly convex; vertex almost flat; supraantennal tubercles weakly raised. Frontoclypeal region lacking puncturation, puncturation on vertex fine and very sparse; setation on head dorsum moderately short, very sparse, suberect. Length of antennae 0.52–0.56 mm; antennomere I subcylindrical, 1.4 times as long as broad, II subcylindrical, 1.5 times as long as broad, antennomeres III–VI slightly longer than broad, VII spherical, VIII subtrapezoidal, slightly longer than broad, IX-X transverse, 1.4 times as broad as long, XI subconical, 1.6 times as long as broad.

Pronotum semielliptical, moderately convex, widest at middle, length 0.33–0.36 mm, width 0.39–0.43 mm, with weakly rounded anterior margin, posterior margin weakly biemarginate. Lateral carina well-marked, microserrate, sides strongly rounded in anterior half and weakly convergent in posterior third; posterior corners obtuse. Puncturation very fine, composed of small and shallow punctures; setation moderately long, suberect to erect.

Elytra oval, elongate, moderately convex, length 0.66–0.68 mm, width 0.43–0.44 mm, EI 1.50–1.54; widest at middle; apices of elytra weakly rounded. Each elytron with single basal fovea located closer to scutellum than to humerus; humeral carina well-marked. Puncturation relatively fine, punctures shallow, slightly larger than those on pronotum, distance between punctures 1.2–3.0 times of their diameter. Setation moderately long, suberect to erect.

Metaventrite moderately concave in middle, very sparsely punctured, distance between punctures 2.5–3.5 times of their diameter with moderately short and erect setation; metaventral process narrower than 1/3 of maximum metaventral width, posteromesal margin cancave; lateral projections slightly longer than broad, apex of each forming right angle with pointed tip.

Aedeagus ( Figs. 10–11 ) length 0.23–0.25 mm, in ventral view with broadly subtrapezoidal apical part, gradually tapering to pointed apex; each paramere in lateral view weakly curved with long apical seta; endophallus as in Fig. 12 .

Legs moderately long and slender; protibiae as in Fig.13 .

Female. Unknown.

Distribution. Bulgaria and eastern Serbia.

Etymology. Species dedicated to Slađana Stevanović, the collector of the species.

Remarks. The new species is similar to C. angelinii sp. n., but it can be distinguished from the latter by the following combination of characters: 1) the body is shorter, 2) in males the metaventrite is moderately concave in middle, while in C. angelinii with a shallow median trapezoidal impression, 3) a different structure of the aedeagus.

Figures

FIGURES 6 – 9. Cephennium (s. str.) fairchildi sp. n.: aedeagus in ventral view (6), in lateral view (7), endophallus in ventral view (8); right protibia of male in dorsal view (9).

FIGURES 10 – 13. Cephennium (s. str.) sladjanae sp. n.: aedeagus in ventral view (10), in lateral view (11), endophallus in ventral view (12); right protibia of male in dorsal view (13).