Bembidiina (TOLEDANO & SCIAKY, 2004)

Toledano, Luca, 2009, Notes on the Bembidiina of Taiwan with description of three new species (Coleoptera: Carabidae), Acta Entomologica Musei Nationalis Pragae 49 (2), pp. 577-598 : 594-595

Key to the Taiwanese Bembidiina

I was unable to study specimens of Asaphidion domonense , Bembidion aliense and Bembidion lulinense and therefore base the key for them only on the literature. The same applies to B. satoi , a species described from Japan and found also in Taiwan ( MORITA 2007).

1 Dorsal surface covered by dense pubescence (Genus Asaphidion Gozis, 1886 ). ............ .......................................................................................... A. domonense Minowa, 1932

– Dorsal surface without dense pubescence (Genera Bembidion Latreille, 1802 and Sinechostictus Motschulsky, 1864 ). ..................................................................................... 2

2 Head large with long mandibles. Coastal species ( Cillenus complex). ......................... 3

– Species with normal head and mandibles. Found in different habitats. ........................ 5

3 Body completely pale, eyes black; metatrochanter longer than half of metafemur. ...... 4

– Body with dark head and pronotum and dark, diffuse median spot on elytra; metatrochanter shorter than half of metafemur ( Figs. 2 , 17 ). ................ B. foochowense Lindroth, 1980

4 Sides of pronotum not sinuate. ....................................... B. formosanum Dupuis, 1912

– Sides of pronotum slightly sinuate ( Fig. 1 ). ............................ B. sauteri Jedlička, 1954

5 Elytral margin clearly angulate and carinate at humeri ( Odontium complex) ( Figs. 3 , 18 ). ................................................................................... B. fusiforme Netolitzky, 1914

– Elytral margin not angulate or carinate at humeri..........................................................6

6 Elytra with light apical spots..........................................................................................7

– Elytra unicoloured..........................................................................................................8

7 Frontal furrows converging and extending on clypeus, frons strongly convex between furrows; pronotum strongly cordate; body metallic green, matt, with C-shaped apical elytral spots. .............................................................. B. niloticum batesi Putzeys, 1875

– Frontal furrows convergent, not extending on clypeus; pronotum weakly cordate; body black with faint iridescence and small, somewhat triangular lateroapical spot. ............... ...................................................................................................... B. aliense Habu, 1973

8 Median line of pronotum deep, extending to pronotal base (Genus Sinechostictus Motschulsky, 1864 ) ( Figs. 16 , 28 ). ................................................... S. chuji Jedlička, 1951

– Median line of pronotum shallow, not extending to pronotal base (Genus Bembidion Latreille, 1802 ). ............................................................................................................. 9

9 Last three abdominal sternites with at least one transversal row consisting of many short setae. ............................................................................................................................ 10

– Abdominal sternites only with the usual pair of long setae. ........................................ 14

10 Body black, without iridescence on elytra; antennomere 1 black ( Figs. 5 , 20 ). ............... ............................................................................................................ B. teradai sp. nov.

– Body black, dark reddish or piceous, with iridescence on elytra; antennomere 1 red. .... ...................................................................................................................................... 11

11 Body reddish to piceous, legs red; antennomeres extremely elongate ( Figs. 6 , 21 ). ........ ................................................................................................... B. miwai Jedlička, 1946

– Body black, legs dark; antennomeres weakly elongate. .............................................. 12

12 Pronotum large and strongly transverse (ew/pw = 1.46–1.57; pw/pl = 1.40–1.43), sides almost straight before near hind angles; median lobe of aedeagus widest at anterior fourth; endophallus with large and elongate sclerites ( Figs. 7 , 10 , 22 ). ....................................... ......................................................................................... B. taiwanum Netolitzky, 1939

– Pronotum smaller and less transverse (ew/pw = 1.54–1.62; pw/pl = 1.34–1.40), sides more visibly sinuous before hind angles.......................................................................13

13 Pronotum narrow (pw/pl = 1.34–1.37), with obtuse and short hind angles; frontal furrows slightly convergent; median lobe of aedeagus with apex bent ventrally and strongly reinforced ventrally; endophallus with C-shaped apicoventral process of main sclerite ( Figs. 8 , 11 , 23 ). ................................................................................ B. jelineki sp. nov.

– Pronotum wide (pw/pl = 1.40), with almost square, long hind angles; frontal furrows parallel; median lobe of aedeagus with apex not bent ventrally and weakly reinforced ventrally; endophallus with apicoventral process of main sclerite triangular ( Figs. 9 , 12 , 24 ). ......................................................................................................... B. seijii sp. nov.

14 Elytra depressed, with slightly foveate discal pores; elytral striae sulcate and intervals strongly convex; endophallus without long flagellum ( Figs. 4 , 19 ). ................................ .............................................................................................. B. takasagonis Habu, 1973

– Elytra convex, discal pores not foveate; elytral striae punctate and intervals flat; endophallus with long flagellum..........................................................................................15

15 Legs pale.......................................................................................................................16

– Legs dark, piceous brown.............................................................................................18

16 Body small (3.41–3.77 mm); discal elytral pores usually in interval 3. ........................... ....................................................................................................... B. satoi Morita, 1993

– Body larger (> 4.50 mm); discal elytral pores adjoining stria 3. ................................. 17

17 Pronotum cordate with base narrower than anterior margin, hind angles square; body black. ........................................................................................ B. lulinense Habu, 1973

– Pronotum strongly convex with base wider than anterior margin, hind angles obtuse; body brown to piceous with some metallic, greenish blue reflections ( Figs. 13 , 25 )................. .................................................................................................. B. chloreum Bates, 1873

18 Body piceous with bronze reflections; pronotum more transverse; antennomeres less elongate ( Figs. 15 , 27 ). ........................................................... B. peleum Jedlička, 1933

– Body black with bluish reflections; pronotum less transverse; antennomeres more elongate ( Figs. 14 , 26 ). ........................................................................... B. shunichii Habu, 1973

Figures

Figs.1–5. Bembidion spp., habitus. 1 – B. (Armatocillenus) sauteri Jedlička, 1954, holotype; 2 – B. (Desarmatocillenus) foochowense Lindroth, 1980; 3 – B. (Odontium) fusiforme Netolitzky, 1914; 4 – B. (Plataphus) takasagonis Habu, 1973; 5 – B. (Blepharoplataphus) teradai sp. nov., holotype.

Figs. 17–28. Bembidion and Sinechostictus spp., median lobe of the aedeagus. 17 – B. (Desarmatocillenus) foochowense Lindroth, 1980; 18 – B. (Odontium) fusiforme Netolitzky, 1914; 19 – B. (Plataphus) takasagonis Habu, 1973; 20 – B. (Blepharoplataphus) teradai sp. nov., holotype; 21 – B. (Trichoplataphus) miwai Jedlička, 1946; 22 – B. (Trichoplataphus) taiwanum Netolitzky, 1939; 23 – B. (Trichoplataphus) jelineki sp. nov., holotype; 24 – B. (Trichoplataphus) seijii sp. nov., holotype; 25 – B. (Ocydromus) chloreum Bates, 1873, specimen from Taiwan; 26 – B. (Ocydromus) shunichii Habu, 1973; 27 – B. (Ocydromus) peleum Jedlička, 1933, specimen from Taiwan; 28 – S. (Pseudolimnaeum) chuji Jedlička, 1951.

Figs. 13–16. Bembidion and Sinechostictus spp., habitus. 13 – B. (Ocydromus) chloreum Bates, 1873, specimen from Taiwan; 14 – B. (Ocydromus) shunichii Habu, 1973; 15 – B. (Ocydromus) peleum Jedlička, 1933, specimen from Taiwan; 16 – S. (Pseudolimnaeum) chuji Jedlička, 1951.

Figs. 6–9. Bembidion spp., habitus. 6 – B. (Trichoplataphus) miwai Jedlička, 1946; 7 – B. (Trichoplataphus) taiwanum Netolitzky, 1939; 8 – B. (Trichoplataphus) jelineki sp. nov., holotype; 9 – B. (Trichoplataphus) seijii sp. nov., holotype.

Figs. 10–12. Bembidion spp., head and pronotum. 10 – B. (Trichoplataphus) taiwanum Netolitzky, 1939; 11 – B. (Trichoplataphus) jelineki sp. nov., holotype; 12 – B. (Trichoplataphus) seijii sp. nov., holotype.