Cylindera (Ifasina), Jeannel, 1946

Wiesner, Jürgen, Bandinelli, Aligi & Matalin, Andrey, 2017, Notes on the tiger beetles (Coleoptera: Carabidae: Cicindelinae) of Vietnam. 135. Contribution towards the knowledge of Cicindelinae, Insecta Mundi 2017 (589), pp. 1-131 : 60-61

Key to the species of subgenus Ifasina Jeannel, 1946

1.

― Elytra black or dark brown, immaculate, with coarse and distinct microsculpturing ............. 2 Elytra maculate, microsculpturing not coarse or distinctive ..................................................... 3

2(1).

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Labrum completely black ................... 155. C. ( I.) cyclobregma Acciavatti and Pearson, 1989 Labrum yellow, blackish marginally .............................. 154. C. ( I.) foveolata (Schaum, 1863)

3(1).

― Labrum entirely bright metallic ................................................................................................... 4 Labrum non-metallic (in some species entirely or partly pale, in some species dark brown or black with metallic tinge at the lateral sides and at base) ...................................................... 9 4(3).

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Elytra with three white spots: basal and apical portion of middle band, and basal portion of apical lunule; apical portion of middle band situated on long dull black stripe parallel to the suture; in some specimens middle band complete but with thin central section ..................... ........................................................................................ 156. C. ( I.) viduata (Fabricius, 1801)

Elytra with four white spots: apical portion of humeral lunule, basal and apical portion of middle band, and basal portion of apical lunule;without longitudinal dull black stripe ................... 5

5(4).

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Shoulders and lateral margin of elytra with slight metallic blue-green iridescence; white elytral spots small; aedeagus slender and not expanded apically ........................................................ ........................................................................................... 157. C. ( I.) fallaciosa (Horn, 1897)

Shoulders with bright metallic green-golden-bronze iridescence; white elytral spots large; aedeagus expanded apically ............................................ 158. C. ( I.) somnuki Naviaux, 1991

6(3).

― Elytra with bright metallic T-shaped area in basal and sutural portion .................................. 7 Elytra without bright metallic T-shaped area in basal and sutural portion ............................. 8 7(6).

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Body length ≤9.0 mm; labrum slightly transverse with pale central area; mandibles pale except for dark apices of teeth; bright metallic T-shaped area of elytra with distinct copperbronze reflection; aedeagus small with short spiniform lamella ........................................................... ............................................................................................. 162. C. ( I.) lesnei (Babault, 1923)

Body length>10.0 mm; labrum distinctly transverse and entirely dark brown; mandibles pale only in basal half; bright metallic T-shaped area of elytra with thin coppery lustre; aedeagus large with relatively long and even tapering to the rounded top lamella ................................ ................................................................................................ 163. C. ( I.) ilonae Matalin, 2015

8(7).

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9(8)

― Labrum entirely or partly pale ..................................................................................................... 9 Labrum entirely dark brown or black, in some species with metallic tinge at the lateral sides and at base ............................................................................................................................... 11 Outline of elytra regular in both sexes ...................................................................................... 10 Outline of elytra very irregular in the female ............... 165. C. ( I.) humillima (Gestro, 1893) 10(9).

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Labrum entirely pale except for light brown anterior margin; apical lunule narrow, in some specimes lacking apical portion; commashaped, middle band with thin indistinct central section contacting apical portion of marginal band ................................................................... ................................................................................... 166. C. ( I.) kaleea kaleea (Bates, 1866)

Labrum pale with dark brown anterior, posterior and lateral margins as well as central carina, in some specimens entirely dark brown; apical lunule and middle band complete, marginal band absent ......................................................... 164. C. ( I.) decempunctata (Dejean, 1825)

11(8).

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