Bembidion, Latreille, 1802

Larochelle, André, Zeperyphodes, Broun & Larivière, Marie-Claude, 2015, Synopsis of the genus Bembidion Latreille in New Zealand (Coleoptera: Carabidae: Bembidiini), Insecta Mundi 2015 (415), pp. 1-78 : 4-9

Key to subgenera and species of Bembidion

1.

— Pronotum with two setiferous punctures on each side [Antennae submoniliform]. .................. 2 Pronotum with a single setiferous puncture on each side (anteriorly) [Antennae usually filiform,

submoniliform in B. stewartense and B. hokitikense ]. ........................................................... 12 2(1).

—

Posterolateral setiferous puncture of pronotum greatly removed from posterolateral angle; elytra with strong subapical sinuations and interval 3 with three discal setiferous punctures; Fig. 1–9 [Body length 3.1–5.2 mm]. ................................... Bembidion (Zecillenus) Lindroth 3

Posterolateral setiferous puncture of pronotum close to posterolateral angle; elytra with feeble subapical sinuations and stria 3 or interval 3 with two discal setiferous punctures; Fig. 10–11 . ....................................................................................................................................... 11

3(2).

— Elytra subelliptical, widest before middle, with lateral margins strongly or moderately widened subapically; Fig. 1–4 [North Island, north of HB]. ................................................................. 4

Elytra elliptical, widest about middle, with lateral margins slightly widened subapically; Fig. 5–9 [North Island, south of GB; South Island; Stewart Island]. ............................................. 7

4(3).

— Elytra with a dark triangular discal marking and prominent shoulders; Fig. 1–2 . .................. 5 Elytra without a dark triangular discal marking and effaced, obliquely rounded shoulders; Fig.

3–4. ............................................................................................................................................. 6 5(4).

—

Elytra with lateral margins strongly widened subapically and subapical tooth sharp; posterolateral angles of pronotum strongly obtuse, with extreme tip acute; color rather pale, antennae and legs entirely pale testaceous; Fig. 1 [Body length 4.1–4.4 mm; elytra with a dark brown triangular discal marking; northern North Island (northern ND, Aupouri and Karikari Peninsulas)]. .............................. Bembidion (Zecillenus) karikari new species

Elytra with lateral margins moderately widened subapically and subapical tooth rounded; posterolateral angles of pronotum moderately obtuse, with extreme tip rectangular; color darker, antennae pale testaceous (segments 5–11 infuscated basally), legs mostly pale testaceous (apex of femora and base of tibiae infuscated); Fig. 2 [Body length 3.9–4.7 mm; elytra with a black, rarely dark brown (ND), triangular discal marking; northeastern North Island, Mimiwhangata Coastal Park (ND) to GB]. .................................................................... ........................................................................... Bembidion (Zecillenus) albescens (Bates)

6(4).

—

Color mostly black, antennae bicolored with segments 1–4 pale testaceous and segments 5–11 strongly infuscated (dark brown), legs testaceous with apex of femora and base and apex of tibiae infuscated; disc of elytra with striae 2–5 very deep and intervals strongly convex; Fig. 3 [Rather large, body length 4.6–5.2 mm; northwestern North Island (AK, WO); on black ironsand]. ............................................................... Bembidion (Zecillenus) alacre (Broun)

Color mostly pale testaceous, antennae and legs entirely pale testaceous; disc of elytra with striae 2–5 moderately deep and intervals slightly convex; Fig. 4 [Smaller, body length 4.3–4.6 mm; northernmost North Island from Aupouri and Karikari Peninsulas to Aranga Beach and Ruakaka (ND); on white sand]. .................... Bembidion (Zecillenus) tepaki new species

7(3).

—

Color rather pale, head dark brown posteriorly, pronotum dark brown apically and basally, elytra with a light brown triangular discal marking, antennae mostly pale testaceous (segment 11 infuscated in apical half), abdomen pale brownish; disc of elytra with striae 2–5 moderately deep and intervals slightly convex; Fig. 5 [Body length 4.1–4.5 mm; southeastern North Island (HB, WA)]. .......................................... Bembidion (Zecillenus) waimarama new species

Color darker, head and pronotum black, piceous or ferrugineous, elytra with or without a reduced irregular discal marking, antennae pale testaceous (segments 5–11 infuscated), abdomen piceous or dark brown; disc of elytra with striae 2–5 shallow and intervals more or less depressed; Fig. 6–9 . ............................................................................................................ 8

8(7).

—

Disc of head with moderately transverse microsculpture; elytra short, mostly pale, with or without a reduced pale irregular discal marking; pronotum widest before middle. .............. 9

Disc of head with irregularly isodiametric microsculpture; elytra elongate, bicolored, with a dark triangular discal marking; pronotum widest about middle. ......................................... 10

9(8).

—

Head and pronotum black or piceous, elytra pale testaceous with a reduced brownish irregular discal marking and with interval 2 infuscated behind middle, legs pale testaceous with apex of femora and base of tibiae slightly infuscated, abdomen piceous; Fig. 6 [Body length 3.0– 4.5 mm; southwestern North Island (WI, WN) and northwestern South Island (NN, Puponga Farm Park)]. .............................................. Bembidion (Zecillenus) puponga new species

Head and pronotum ferrugineous, elytra pale testaceous with or without a reduced light brown irregular discal marking and with interval 2 entirely pale, legs ferrugineous, abdomen dark brown; Fig. 7 [Body length 3.1–4.1 mm; northern South Island (NN, Nelson, Tahunanui)].. ........................................................................ Bembidion (Zecillenus) tillyardi (Brookes)

10(8).

—

Head dark brown, pronotum light brown basally, apically, and discally, elytra pale testaceous with a dark brown triangular discal marking reaching interval 7; apex of elytra oblique; Fig. 8 [Body length 3.9–4.8 mm; southeastern South Island (SL, DN)]. .......................................... ........................................................................... Bembidion (Zecillenus) chalmeri (Broun)

Head black, pronotum black with rufotestaceous margins, elytra pale testaceous with a black triangular discal marking reaching interval 6; apex of elytra rounded; Fig. 9 [Body length 5.0 mm; Stewart Island]. .......................... Bembidion (Zecillenus) embersoni (Lindroth)

11(2).

—

Elytra subdepressed, with variegated color pattern, shoulders angulate, discal setiferous punctures small (not foveate), inserted on interval 3 ; pronotum rectangular, depressed, with laterobasal carinae; frontal furrows prolonged upon clypeus; Fig. 10 [Body length 5.1–6.5 mm; North and South Islands , subantarctic Auckland Islands; loamy coastal estuaries]. ............. .................................................. Bembidion (Notaphus) brullei Gemminger and Harold

Elytra moderately convex, without variegated color pattern, shoulders moderately rounded, discal setiferous punctures large (foveate), inserted in stria 3; pronotum cordate, moderately convex, without laterobasal carinae; frontal furrows not prolonged upon clypeus; Fig. 11 [Body length 3.5–4.6 mm; North and South Islands, Chatham Islands; sandy riverbanks and lakeshores]. .............................................. Bembidion (Ananotaphus) rotundicolle Bates

12(1).

—

Elytra with two discal setiferous punctures on interval 5 [Body length 3.8–9.3 mm]. ...............

................................................................................. Bembidion (Zeplataphus) Lindroth 13 Elytra without setiferous punctures on interval 5. ................................................................... 19

13(12). Pronotum with thin raised lateral bead complete, well developed near posterolateral angles; last visible abdominal sternum (sternum VII) of female with numerous short setae in addition to four long ambulatory setae [Body length 3.8–6.8 mm]........................................................... 14

— Pronotum with thin raised lateral bead incomplete, obsolete near posterolateral angles; last visible abdominal sternum (sternum VII) of female with four long ambulatory setae only [Body length 5.8–9.3 mm]. .................................................................................................................. 16

14(13). Microsculpture of elytra transverse; pronotum strongly convex; Fig. 12 [Body length 4.5–6.1 mm; antennae and legs piceous (antennal segment 1 and tibiae pale rufous); elytra subdepressed, stria 7 incomplete behind middle; North and South Islands]. .................................................. .......................................................................... Bembidion (Zeplataphus) tairuense Bates

— Microsculpture of elytra isodiametric; pronotum moderately convex. ..................................... 15

15(14)

—

Rather large, body length 5.2–6.8 mm; antennae and legs piceous; elytra subdepressed, dull, with stria 7 complete behind middle (joined apically to stria 6); pronotum with laterobasal foveae moderately deep; Fig. 13 [North and South Islands]. .................................................... ............................................................ Bembidion (Zeplataphus) granuliferum Lindroth

Smaller, body length 3.8 mm; antennae and legs rufous (antennal segments 3–11 and femora slightly infuscated); elytra slightly convex, shiny, with stria 7 incomplete behind middle; pronotum with laterobasal foveae shallow; Fig. 14 [Northern South Island (NN, Teal Valley)]. ................................................... Bembidion (Zeplataphus) townsendi Lindroth

16(13). Elytra short, slightly convex; elytral microsculpture absent or feeble; pronotum clearly wider than head, with sides strongly rounded anteriorly and moderately sinuate posteriorly; Fig. 15–16 . ....................................................................................................................................... 17

— Elytra elongate, subdepressed; elytral microsculpture present, strong; pronotum barely wider than head, with sides slightly rounded anteriorly and slightly sinuate posteriorly; Fig. 17–18 . ....................................................................................................................................... 18

17(16). Microsculpture absent on elytra; Fig. 16 [Body length 5.8–7.9 mm; North Island]. ................... ................................................. Bembidion (Zeplataphus) maorinum levatum Lindroth

— Microsculpture present on elytra, irregularly isodiametric, feeble on intervals 1–5, strong on intervals 6–7; Fig. 15 [Body length 5.8–8.0 mm; South Island]. ............................................... ................................................... Bembidion (Zeplataphus) maorinum maorinum Bates

18(16). Appendages rather pale, antennae mostly pale yellowish, tibiae pale yellowish strongly contrasting with dark femora, apex of femora pale; elytra with all striae complete behind middle and microsculpture very strong, regularly isodiametric in male, almost granulate in female; Fig. 17 [Body length 6.5–9.3 mm; North and South Islands]. ...................................... .............................................................................. Bembidion (Zeplataphus) charile Bates

— Appendages darker, antennae rufous to piceous (segment 1 infuscated, at least above), tibiae rufous to piceous not strongly contrasting with femora, apex of femora dark; elytra with striae incomplete behind middle and microsculpture moderately strong, irregularly isodiametric; Fig. 18 [Body length 6.2–9.0 mm; North and South Islands]. ................................................... ........................................................................ Bembidion (Zeplataphus) dehiscens Broun

19(12). Elytra with two discal setiferous punctures on interval 3; submentum with four setae. ....... 20

— Elytra with three discal setiferous punctures in stria 3; submentum with six setae. ............ 23

20(19). Rather small, body length 3.7–4.3 mm; pronotum with laterobasal carinae and wide elongateoblong laterobasal foveae; elytral striae incomplete (striae 2–7 abbreviated apically); microsculpture absent on head and pronotum, absent on elytra in male, present on apex of elytra in female; Fig. 19 [North Island]. ....... Bembidion (Zeperyphus) actuarium Broun

— Larger, body length 5.5–7.6 mm; pronotum without laterobasal carinae, with narrow linear laterobasal foveae; elytral striae complete; microsculpture present on head, pronotum, and elytra in both sexes; Fig. 20–22 . .......................... Bembidion (Zeactedium) Netolitzky 21

21(20). Elytra moderately convex, yellowish with a dark variegated color pattern and shallow, finely punctate striae; Fig. 20 [Body length 6.2–7.6 mm; North and South Islands (WO to FD–DN), Stewart Island]. .................................................... Bembidion (Zeactedium) musae Broun

— Elytra strongly convex, mostly black, without a dark variegated color pattern, with deep and coarsely punctate striae; Fig. 21–22 . ...................................................................................... 22

22(21). Elytra black, with yellowish oblique subapical markings and sides slightly rounded about middle; pronotum with posterolateral angles acute, strongly projected laterally and sides strongly sinuate posteriorly; Fig. 21 [Rather large, body length 6.0– 7.3 mm; western South Island].. ........................................................................... Bembidion (Zeactedium) orbiferum Bates

— Elytra bicolored, black with wide yellowish lateral margins and sides parallel about middle; pronotum with posterolateral angles rectangular and sides moderately sinuate posteriorly; Fig. 22 [Smaller, body length 5.5–6.2 mm; southern North Island]. ........................................ .................................................................... Bembidion (Zeactedium) giachinoi Toledano

23(19). Elytra pale with dark variegated color pattern; Fig. 23–24 [Legs pale; North Island]. ............. ............................................................................... Bembidion (Zeperyphodes) Lindroth 24

— Elytra dark without variegated color pattern; Fig. 25–36 [Legs pale or dark; North and South Islands, Stewart Island]. ........................................ Bembidion (Zemetallina) Lindroth 25

24(23). Body stout; antennae filiform, yellowish with segments 5–11 infuscated, legs testaceous with femora infuscated; elytra widest about middle, with rather large dark brown markings; pronotum with sides slightly sinuate posteriorly and posterolateral angles subrectangular, slightly obtuse; microsculpture isodiametric, strong on head, pronotum, and elytra; Fig. 23 [Rather small, body length 3.1–3.9 mm; southern North Island (BP to WN–WA); coastal and inland species]. ......................................... Bembidion (Zeperyphodes) callipeplum Bates

—

Body slender; antennae subfiliform (segments 8–10 stout), pale testaceous, legs pale testaceous; elytra widest before middle, with smaller light brown markings; pronotum with sides strongly sinuate posteriorly and posterolateral angles acute, projected laterally; microsculpture transverse, obsolete on disc of head and pronotum, feeble on elytra; Fig. 24 [Larger, body length 3.6–4.9 mm; northern North Island (ND to WO); coastal species]. ............................... ................................................................... Bembidion (Zeperyphodes) nesophilum Broun

25(23). Elytra with striae 2–6 complete, well impressed apically [Last visible abdominal sternum (sternum VII) of female with four long ambulatory setae only]. ........................................... 26

— Elytra with outer striae (at least striae 5–6) absent or poorly impressed apically [Last visible abdominal sternum (sternum VII) of female with or without numerous short setae, in addition to four long ambulatory setae]. ............................................................................................... 28

26(25). Forebody narrow in comparison to elytra; elytra subdepressed, with shoulders angulate, sides subparallel, striae shallow and finely punctate, stria 7 obsolete, intervals depressed; Fig. 25 [Body length 4.0– 4.9 mm; North and South Islands, Stewart Island]. ................................... ...................................................................... Bembidion (Zemetallina) tekapoense Broun

— Forebody moderately or very wide in comparison to elytra; elytra moderately convex, with shoulders moderately rounded, sides rounded, striae deep and coarsely punctate, stria 7 strong, intervals slightly convex; Fig. 26–27 . ......................................................................... 27

27(26). Body slender; forebody moderately wide in comparison to elytra; antennae filiform, moderately long (reaching about elytral shoulders); elytra with stria 7 punctate in anterior two-thirds; elytral epipleura and legs piceous; Fig. 26 [Rather large, body length 4.0– 4.8 mm; North and South Islands]. ........................................ Bembidion (Zemetallina) anchonoderus Bates

— Body stout; forebody wider in comparison to elytra; antennae submoniliform, rather short (reaching about elytral base); elytra with stria 7 punctate in anterior half; elytral epipleura and legs rufous; Fig. 27 [Smaller, body length 3.4–3.8 mm; Stewart Island]. ......................... ................................................................ Bembidion (Zemetallina) stewartense Lindroth

28(25). Microsculpture absent on head, pronotum, and elytra; forebody narrow in comparison to elytra; Fig. 28 [Body length 4.1–5.3 mm; elytra with striae 2–6 incomplete, disappearing before apex and stria 7 well developed, although incomplete apically; North and South Islands]. ........... .......................................................................... Bembidion (Zemetallina) parviceps Bates

— Microsculpture present, at least on sides of head, pronotum, and elytra; forebody moderately wide in comparison to elytra; Fig. 29–36 . ............................................................................... 29

29(28). Microsculpture poorly developed on head and pronotum, often obsolete discally. .................. 30

— Microsculpture strongly developed on head and pronotum. ..................................................... 34

30(29). Elytra with isodiametric microsculpture, at least basally and laterally. ................................ 31

— Elytra with transverse microsculpture throughout. ................................................................. 32

31(30). Posterolateral angles of pronotum obtuse; elytra depressed, subelongate, sides subparallel, stria 7 obsolete with or without rudimentary punctures, apical striole absent, preapical setiferous puncture isolated; Fig. 29 [Body length 3.5–4.6 mm; western South Island]. ......................... ..................................................................... Bembidion (Zemetallina) waiho new species

— Posterolateral angles of pronotum acute, projected laterally; elytra moderately convex, subovate, sides moderately rounded, stria 7 strong and coarsely punctate, apical striole present, preapical setiferous puncture not isolated; Fig. 30 [Body length 3.2–4.1 mm; North Island]. ................ ................................................................. Bembidion (Zemetallina) urewerense Lindroth

32(30). Head and pronotum black, elytra dark brown; pronotum with posterolateral angles acute at extreme tip and epipleura, in dorsal view, exposed in front of posterolateral angles; elytra — with shoulders obtuse and striae shallow; Fig. 31 [Body length 4.0– 4.7 mm; posterolateral angles of pronotum acute, projected laterally; last visible abdominal sternum (sternum VII) of female with four long ambulatory setae only; northern North Island (ND)]. ....................... ......................................................... Bembidion (Zemetallina) mangamuka new species

Head, pronotum, and elytra black; pronotum with posterolateral angles obtuse at extreme tip and epipleura, in dorsal view, not exposed in front of posterolateral angles; elytra with shoulders rounded and striae 4–7 moderately deep; Fig. 32–33 . .......................................... 33

33(32). Metallic lustre greenish or bluish on head, pronotum, and elytra; posterolateral angles of pronotum subrectangular; elytra moderately convex, subovate, moderately wide, with shoulders and sides moderately rounded; last visible abdominal sternum (sternum VII) of female with four long ambulatory setae only; Fig. 32 [Body length 4.4–5.2 mm; southern North Island]. ..................................................... Bembidion (Zemetallina) solitarium Lindroth

— Metallic lustre greenish on head, aeneous on pronotum and elytra; posterolateral angles of pronotum acute, projected laterally; elytra strongly convex, elongate, narrow, with shoulders and sides slightly rounded; last visible abdominal sternum (sternum VII) of female with numerous short setae, in addition to four long ambulatory setae; Fig. 33 [Body length 4.6–5.5 mm; northwestern South Island]. ..... Bembidion (Zemetallina) bullerense new species

34(29). Antennae submoniliform, rather short, reaching about elytral base; pronotum with basal constriction very short and posterolateral angles strongly obtuse; elytra with discal setiferous punctures of stria 3 poorly developed, very small; last visible abdominal sternum (sternum VII) of female with numerous short setae, in addition to four long ambulatory setae; Fig. 34 [Smallest species of the subgenus, body length 2.8–4.0 mm; antennae and legs entirely black; North and South Islands]. ........................... Bembidion (Zemetallina) hokitikense Bates

— Antennae filiform, moderately long, reaching about elytral shoulders; pronotum with basal constriction moderately long and posterolateral angles rectangular; elytra with discal setiferous punctures of stria 3 well developed; last visible abdominal sternum (sternum VII) of female with four long ambulatory setae only; Fig. 35–36 [Body length 3.7–5.2 mm]. ..................... 35

35(34). Rather large, body length 4.4–5.2 mm; pronotum strongly convex, very wide, with laterobasal foveae reaching or almost reaching basal margin; elytra subovate, with sides moderately rounded and apical striole shallow; Fig. 35 [Legs black to piceous; South Island]. ................. ......................................................................... Bembidion (Zemetallina) chalceipes Bates

— Smaller, body length 3.7–4.5 mm; pronotum moderately convex, moderately wide, with laterobasal foveae shorter, not reaching basal margin; elytra subelongate, with sides subparallel and apical striole deep; Fig. 36 [Legs usually dark rufous (tibiae sometimes black or piceous in CO, DN, MK); South Island]. ................................ Bembidion (Zemetallina) wanakense Lindroth

Figures

Figures 1–4. Dorsal habitus. 1) Bembidion karikari new species. 2) B. albescens. 3) B. alacre. 4) B. tepaki new species. Scale line = 1 mm.

Figures 5–8. Dorsal habitus. 5) Bembidion waimarama new species. 6) B. puponga new species. 7) B. tillyardi. 8) B. chalmeri. Scale line = 1 mm.

Figures 9–12. Dorsal habitus. 9) Bembidion embersoni. 10) B. brullei. 11) B. rotundicolle. 12) B. tairuense. Scale line = 1 mm.

Figures 13–16. Dorsal habitus. 13) Bembidion granuliferum. 14) B. townsendi. 15) B. maorinum maorinum. 16) B. m. levatum. Scale line = 1 mm.

Figures 17–20. Dorsal habitus. 17) Bembidion charile. 18) B. dehiscens. 19) B. actuarium. 20) B. musae. Scale line = 1 mm.

Figures 21–24. Dorsal habitus. 21) Bembidion orbiferum. 22) B. giachinoi. 23) B. callipeplum. 24) B. nesophilum. Scale line = 1 mm.

Figures 25–28. Dorsal habitus. 25) Bembidion tekapoense. 26) B. anchonoderus. 27) B. stewartense. 28) B. parviceps. Scale line = 1 mm.

Figures 29–32. Dorsal habitus. 29) Bembidion waiho new species. 30) B. urewerense. 31) B. mangamuka new species. 32) B. solitarium. Scale line = 1 mm.

Figures 33–36. Dorsal habitus. 33) Bembidion bullerense new species. 34) B. hokitikense. 35) B. chalceipes. 36) B. wanakense. Scale line = 1 mm.