Dyschiriodes (Dyschiriodes) genieri, Bulirsch, 2009

Bulirsch, Petr, 2009, Contribution to the Asian and Afrotropical species of the genus Dyschiriodes (Coleoptera: Carabidae: Scaritinae), Acta Entomologica Musei Nationalis Pragae (suppl.) 49 (2), pp. 559-576 : 573-574

Dyschiriodes (Dyschiriodes) genieri sp. nov.

( Figs. 7 , 13 , 18 )

Type locality. Burkina Faso, Sanguié, Forêt de Sorobouli , 11°47′44″N, 02°53′25″W ; 270 m a.s.l.

Type material. HOLOTYPE: ♁ ‘BURKINA FASO: SANGUIÉ / Forêt de Sorobouli , 270 m / 11°47′44″N, 002°53′25″O [= west] / 13.viii.2005, F. Génier (leg.) / zone soudanienne sud / piège lumineux, 2005–15’ ( NMPC) . PARATYPES (72 specimens): BURKINA FASO: 2 spec. with the same data as HT ( FGGC) ; 6 spec. ‘BURKINA FASO: LOROUM / Toulfé , 300 m / 13°53′43″N, 001°52′25″O / 15.vii.2006, zone sahélienne / steppe arborée, piège lumineux / F. & S. Génier (leg.), 2006-37’ ( FGGC, PBPC) ; 6 spec. ‘BURKINA FASO: NAHOURI / Forêt de Nazinga, Boulieselo / 310 m, 11°11′50″N, 001°35′09″O / 27.vii.2006, zone soudanienne / savane boisée, piège lumineux / F. & S. Génier (leg.), 2006-82’ ( FGGC, PBPC) ; 26 spec. ‘BURKINA FASO, BOROMO / 264 m, 11°47′44 N, 2°53′25 W / Sopobouli Fst 10.–15.viii.(20)05 / Philippe Moretto leg.’ ( PSHG, PBPC) ; 22 spec. ‘BURKINA FASO, BOROMO / Forêt de Sorobouli 264 m / 11°47′44″N, 2°53′25″W / 12.viii.2005 Leg. Moretto’ ( SFPI, PBPC) ; 6 spec. ‘BURKINA FASO: Sanguie / Boromo Forêt de Sorobouli , / 270 m / 11°47′44″N, 2°53′25″O / 10–14.viii.2005, P. Moretto leg.’ ( PBPC) . GHANA: 1 spec. ‘ West Africa, GHANA / NORTHERN REGION, / Mole Game Reservat / 11 km N von Larabanga / leg. Dr. S. Endrődi // No. 45 / am Licht des Resthauses / 13–14.viii.1970 ’ ( HNHM) ; 1 spec. ‘GHANA / NORTHERN REGION / Banda-Nkwanta / 150 m, N 8 22–W 2 08 / Dr. S. Endrődy-Younga / Nr. 58 / light trap / 19–22.viii.1965 ’ ( HNHM) ; 2 spec. ‘GHANA: NORTHERN REGION / Banda-Nkwanta / 150 m, N 8 22–W 2 08 / Dr. S. Endrődy-Younga / Nr. 20 / light trap / 1–7.vii.1965 ’ ( HNHM, PBPC) .

Description. Habitus as in Fig. 7 ; length 3.00– 3.30 mm, exceptionally as small as 2.80 mm (mean 3.14 mm, n = 30; HT 3.05 mm). Head and pronotum dark fuliginous to almost black, with indistinct bronze lustre; elytra fuliginous with base and apex lighter; legs rusty red, antennomeres and mouth-parts slightly lighter.

Head. Anterior margin of clypeus with slightly rounded, distinctly protruded lateral lobes, margin between them very slightly to moderately convex, without distinct tooth; clypeofrontal area with slightly to moderately oblique transverse furrow and with additional, 1–2 or exceptionally three more or less regular transverse furrows; facial furrows deep, moderately long, parallel anteriorly and strongly divergent in posterior half; distance between them about equal to eye length. Surface strongly vaulted, even, smooth, with very fine and sparse micropunctures. Eyes moderately large, convex. Antennae submoniliform.

Pronotum. Strongly convex, outline strongly and regularly rounded, not attenuated anteriorly; 1.04–1.12 (mean 1.09; HT 1.07) times as wide as long, 1.35–1.42 (mean 1.39; HT 1.37) times as wide as head; widest slightly below midlength. Anterior angles blunt, narrowly rounded, posterior ones broadly rounded. Anterior transverse impression distinct, not punctate, with sparse and rough cross striae; median line deep, deeper and broader posteriorly; lateral channel moderately broad, reflexed lateral margin extended slightly beyond posterior setiferous puncture. Surface mirror-like, shiny, with very fine micropunctures.

Elytra. Convex, long-ovate, dorsal surface slightly concave in anterior fifth in lateral view; 1.63–1.71 (mean 1.68; HT 1.66) times as long as wide, 1.16–1.26 (mean 1.20; HT 1.19) times as wide as pronotum; humeri protruded, each elytron with small and blunt humeral tooth; base slightly sloping; outline slightly, regularly broadened, broadest distinctly below anterior third; suture broadly and moderately deeply depressed at base. Base without basal border and tubercles; BSP moderately large, distinctly connected with stria 1. Striae 1–6 moderately deep, densely punctate in anterior two thirds, much more finely punctate apically, striae 7 with slightly finer and stria 8 with distinctly finer punctures. Striae slightly to distinctly finer in latero-apical area, stria 8 from fine to very fine in apical third. Intervals slightly vaulted in anterior two thirds, flattened latero-apically. Three PHSP, three DSP (all in interval 3 near stria 3) and two ASP (in deep apical stria).

Protibia. Apical spine moderately curved downwards and slightly inwards, as long as apical spur; the latter slightly curved apically; distal marginal tooth large, sharp, proximal one much smaller, blunt.

Aedeagus. Length 0.53 mm in HT, lower margin of median lobe slightly emarginate ( Figs. 13 , 18 ). Apical lamella small and short, asymmetric, rounded, strongly narrowed apically ( Fig. 18 ). Paramere asetose.

Differential diagnosis. Dyschiriodes genieri sp. nov. belongs to the D. chalybeus group sensu FEDORENKO (2000) (= D. bengalensis group sensu FEDORENKO (1994, 1996)). It can be distinguished from the most similar D. (D.) mortchaensis by its darker and smaller body (2.80–3.30 mm in D. genieri sp. nov., 3.60–4.00 mm in D. mortchaensis ), shorter elytra (ratio length/width equal to 1.63–1.71 in D. genieri sp. nov. and 1.73–1.82 in D. mortchaensis ) with distinctly more broadened outline and more sloping base, and different lamella of the median lobe. Dyschiriodes genieri sp. nov. can be distinguished from D. (D.) bengalensis ( Andrewes, 1929) , known from India (Bengal) to West Africa, by paler elytra without metallic lustre, different structure of clypeus and longer, more parallel-sided elytra with much finer striae, especially at apex and (only stria 1) at base. Finally, the new species differs from D. (D.) jelineki sp. nov. by much smaller size (2.80–3.30 mm in D. genieri sp. nov. and 3.70 mm in D. jelineki sp. nov.), different structure of the clypeus, more convex outline of the pronotum that is not attenuated anteriorly, and less broadened elytra.

Etymology. Dedicated to François Genier (Gatineau, Canada), collector of the major part of the type series.

Distribution. Burkina Faso, Ghana.

Comment. A single male labelled ‘ Zaire (= P.D.R. Congo), Haut Uele / Umg. Doruma / 20.iv.–10.v.1986 / leg G. Wewalka’ (ADVA) is not included in the type series. It is probably conspecific with D. genieri sp. nov. but differs slightly from the type series, especially in some morphometric characters (e.g., length of body 2.80 mm, ratio of length/width of elytra 1.62). It probably represents a separate subspecies but the material is not sufficient for its description.

Figures

Figs. 6–7. Habitus of holotypes. 6 – D. jelineki sp. nov. (3.70 mm); 7 – D. genieri sp. nov. (3.05 mm).

Figs. 8–13. Aedeagus, right lateral view. 8 – Dyschiriodes sabahensis sp. nov.; 9 – D. ruthmuellerae sp. nov.; 10 – D. kadleci sp. nov.; 11 – D. facchinii sp. nov.; 12 – D. jelineki sp. nov.; 13 – D. genieri sp. nov. (all holotypes).

Figs. 14–18.Apex of aedeagus, ventral view.14 – Dyschiriodes sabahensis sp. nov.; 15 – D. ruthmuellerae sp. nov.; 16 – D. kadleci sp. nov.; 17 – D. facchinii sp. nov.; 18 – D. genieri sp. nov. (all holotypes).