Corresponding author: Chi-Feng Lee (
Academic editor: A. Konstantinov
This publication treats species within
Lee C-F, Bezděk J (2020) Revision of the
Species within the genus
This research deals with the remaining species that were not treated in the first two papers, including
The abdomens of adults were separated from the bodies and boiled in 10% KOH solution, followed by washing in distilled water to clear and soften genitalia. The genitalia were then dissected from the abdomen, mounted on slides in glycerin, and studied and drawn using a Leica M165 stereomicroscope. For detailed examination a Nikon ECLIPSE 50i microscope was used.
At least two pairs from each species were examined to delimit variability of diagnostic characters. For species collected from more than one locality, at least one pair from each locality was examined. Length was measured from the anterior margin of the eye to the elytral apex, and width at the greatest width of the elytra.
Specimens were available for study and deposited in the following institutions:
Exact label data are cited for all type specimens of previously described species; a double slash (//) divides the data on different labels and a single slash (/) divides the data in different rows. Other comments and remarks are in square brackets: [p] – preceding data are printed, [h] – preceding data are handwritten, [w] – white label, [y] – yellow label, [r] – red label, [y] – yellow label.
Holotype ♂ (
Length 5.8–6.2 mm, width 1.9–2.2 mm. Body color (Fig.
Habitus of
Diagnostic characters of
Populations from Laos and southwest China were misidentified. They represent
Thailand, Vietnam.
Holotype ♂ (
Length 6.1–6.5 mm, width 2.3–2.5 mm. Body color (Fig.
Diagnostic characters of
This new species is named for the similarity with
China: Yunnan; Laos.
Holotype ♂ (
Length 6.5–8.0 mm, width 2.4–3.1 mm. Body color (Fig.
Diagnostic characters of
Males of Laos have apically tapering and truncate apex of aedeagus and its ventral surface have median notch not extending into basal opening (Fig.
Cambodia, Laos, Thailand.
Body length 4.8–7.2 mm.
Antenna 11-segmented, filiform and slender, some antennomeres apically expanded or curved in males; antennomere II very short, III long, 1.7–3.5× longer than II, 0.6–1.0× as long as I, 2.4–3.3× as long as wide.
Pronotum quadrate or transverse, 1.2–1.3× as wide as long, broadest at middle, with pair of discal depressions. Anterior pronotal border absent. Lateral margins rounded or subparallel. Disc with reticulate microsculpture.
Elytra. Surface almost glabrous (with scattered erect setae on apical part only) except
Legs. Procoxae globular, prosternal process reduced to thin depressed ridge but apically expanded, procoxal cavities closed. Protarsomere I more or less swollen. Metatibia simple, with apical spine. Length of metatarsomere I nearly equal to following tarsomeres combined. Tarsal claws appendiculate with basal tooth small and rounded. Metatarsomere I simple.
Abdomen. Last ventrite apically trilobate.
Aedeagus always ventrally flattened, apex with shallow notch. Ventral surface with wide groove, with a constriction formed by two small triangular sclerites that are elongate in some species. Internal sac with median elongate sclerite, divided into two parts; sometimes with single or paired hook-like or longitudinal and apically tapering sclerites.
This new genus possesses the following characters shared with
All
This new genus is named for its similarity with the genus
Definition of species groups and catalogue of
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Frontoclypeus not modified in males; body metallic blue, longitudinal ridges distinct and few setae on the elytra. | |
China | |
India | |
China | |
China, Laos, Vietnam | |
Taiwan | |
Laos | |
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Frontoclypeus modified in males, with concavity between eyes, sometimes with erect processes and setae inside concavity. | |
China | |
China | |
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India |
Vietnam | |
Philippines | |
Philippines | |
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Laos |
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Laos, Thailand, Vietnam |
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Laos |
China | |
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Taiwan |
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Frontoclypeus not modified in males; longitudinal ridges indistinct and with dense setae on the elytra. | |
Thailand | |
Laos, Vietnam | |
= |
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Japan | |
Taiwan | |
Taiwan | |
Taiwan | |
Taiwan |
Holotype ♂ (
Length 6.5–6.6 mm, width 2.4-2.5 mm. Body color (Fig.
China (Fujian, Jiangxi, Guandong, Hainan Island).
Habitus of
Heads of males of
Diagnostic characters of
Holotype ♂ (
China (Fujian and Guandong).
Holotype ♂ (
Length 5.6–6.6 mm, width 2.0–2.6 mm. Body color (Fig.
This new species is dedicated to Matthias Borer (Curator,
India.
Habitus of
Heads of males of
Diagnostic characters of
Holotype ♂ (
VIETNAM. Kien Giang: 2♂♂, 3♀♀ (
Length 5.9–6.8 mm, width 2.3–2.6 mm. Body color (Figs
Diagnostic characters of
Vietnam.
Holotype ♂ (
Length 5.0-5.7 mm, width 1.8-2.0 mm. Body color (Fig.
This new species is dedicated to late Dr. J. Linsley Gressitt for his great contribution to the taxonomy of oriental
Philippines: Mindanao.
Habitus of
Heads of males of
Diagnostic characters of
Holotype ♂ (
Length 5.8–6.2 mm, width 2.1–2.4 mm. Body color (Fig.
The new species is dedicated to Mr. Hsing-Tzung Cheng, who is a member of the Taiwan Chrysomelid Research Team (TCRT) for inventorying leaf beetles.
Laos.
Habitus of
Heads of males of
Diagnostic characters of
Holotype ♂ (
Length 6.6-7.5 mm, width 2.6-3.2 mm. Body color (Fig.
One male collected from Dalat has a smaller body (5.3 mm long, 2.2 mm wide) and the convex area on the elytra is indistinct and with longitudinal ridges (Fig.
This new species is dedicated to late Dr. Shinsaku Kimoto for his great contribution to taxonomy of oriental and Palaearctic
Laos, Thailand, Vietnam.
Habitus of
Heads of
Diagnostic characters of
Holotype ♂ (
Length 4.8–5.9 mm, width 1.8–2.4 mm. Body color metallic purple (Fig.
Diagnostic characters of
The new species is dedicated to Mrs. Hueh Lee, who is a member of the Taiwan Chrysomelid Research Team (TCRT) for inventorying leaf beetles.
Laos.
Holotype ♂ (
Length 5.7–6.7 mm, width 2.2–2.4 mm. Body color (Fig.
Diagnostic characters of
China (Hainan Island, Fujian, Hong Kong).
Holotype ♂ (
Length 5.3–6.7 mm, width 2.3–2.8 mm. Body color (Fig.
Diagnostic characters of
The new species is dedicated to Mrs. Su-Fang Yu, who is a member of the Taiwan Chrysomelid Research Team (TCRT) for her contribution to the diversity of leaf beetles.
Taiwan.
Holotype ♀ (
Length 5.6–5.9 mm, width 2.3–2.5 mm. Body color (Fig.
Diagnostic characters of
Most setae are missing from the elytra of the holotype (Fig.
Thailand.
LAOS. 1♂ (
Length 5.0–6.4 mm, width 1.8–2.3 mm. Body color (Fig.
Diagnostic characters of
Laos, Vietnam.
Body length 4.6–5.8 mm.
Elytra. Surface almost glabrous (with scattered erect setae on apical part only); punctate and striate, usually with longitudinal ridges between two longitudinal rows of punctures, sometimes ridges reduced or absent in part. Epipleura gradually narrowed to apex. Disc with reticulate microsculpture.
Legs. Procoxae globular, prosternal process apically expanded, procoxal cavities closed. Protarsomere I more or less swollen. Metatibia simple, without apical spine. Length of metatarsomere I nearly equal to following tarsomeres combined. Tarsal claws appendiculate with basal tooth small and rounded. Metatarsomere I simple.
Abdomen. Last ventrite apically trilobate.
Aedeagus always ventrally flattened, apex with shallow notch. Ventral surface entirely sclerotized. Internal sac with median elongate sclerite, undivided; with single pair of large lateral sclerites.
This new genus possesses the following characters shared with
This new genus is named for its distribution combined with the genus
Two new species are found in Borneo:
Holotype ♂ (
Length 4.6–5.0 mm, width 1.7–1.8 mm. Body color (Fig.
The new species is dedicated to the Czech specialist Stanislav Jákl who collected the type specimens.
Indonesia: South Kalimantan.
Habitus of
Diagnostic characters of
Holotype ♂ (
Length 5.1–5.8 mm, width 1.8–2.3 mm. Body color (Fig.
Female unknown.
The new species is named for its type locality.
Indonesia: South Kalimantan; Malaysia: Sabah.
Diagnostic characters of
1 | Some antennomeres curved or apically broadened in male; metatibia with apical spine; aedeagus with median elongate sclerite divided, with small lateral sclerites present or absent, triangular sclerites present |
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– | Antennomeres filiform, uniform in both sexes; metatibia without apical spines; aedeagus with median elongate sclerites undivided, with large lateral sclerites, triangular sclerites absent |
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2 | Frontoclypeus modified in males, with concavity between eyes |
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– | Frontoclypeus not modified in males |
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3 | Concavity between eyes in males semi-circular, with one central erect process and one pair of baso-lateral processes (Fig. |
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– | Concavity between eyes in males transverse, anterior margin narrowly rounded, with one central erect process in some species but without baso-lateral processes, Southeast Asia except Philippines |
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4 | Large species, 7.0-7.2 mm long; reddish brown dorsum; without lateral process at apex of antennomere I in males |
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– | Small species, 5.0-5.7 mm long; metallic blue dorsum; with lateral process at apex of antennomere I in males (Fig. |
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5 | General body color reddish brown, but elytra metallic blue (Fig. |
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– | Body metallic green, blue, or purple |
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6 | Body color golden green (Figs |
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– | Body color metallic blue or purple |
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7 | Ridges on elytra distinct and convex (Fig. |
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– | Ridges on elytra indistinct (Figs |
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8 | Presence of convex area surrounding scutellum in males (Fig. |
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– | Lacking convex area surrounding scutellum in males (Fig. |
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9 | Concavity between eyes wide and with one erect process (Fig. |
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– | Concavity between eyes narrow (Fig. |
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10 | Ridges on elytra distinct and convex (Fig. |
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– | Ridges on elytra indistinct (Fig. |
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11 | All ridges on elytra distinct and convex |
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– | Distinct convex ridges intertwined with indistinct ridges |
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12 | Concavity between eyes with one pair of erect processes |
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– | Concavity between eyes with median longitudinal ridge |
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13 | Longitudinal ridges on elytra distinct |
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– | Longitudinal ridges on elytra indistinct or reduced |
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14 | Elytra with extremely coarse punctures, space between punctures narrower than diameters of punctures; head and prothorax yellow except vertex and pronotum; Taiwan |
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– | Elytra with coarse punctures, space between punctures broader than diameters of punctures; head and prothorax metallic blue or green except mouth parts |
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15 | Body color metallic green; longitudinal ridges on elytra apically abbreviated from apical 1/3; antennomeres III-VII straight in males; Taiwan |
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– | Body color metallic blue; longitudinal ridges on elytra not apically abbreviated; antennomeres III-VII more or less curved |
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16 | Males with longitudinal ridges on the elytra more or less reduced |
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– | Males with longitudinal ridges on the elytra prominent |
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17 | Aedeagus asymmetrical, curved to the right |
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– | Aedeagus symmetrical |
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18 | Aedeagus relatively slender, 10.0× longer than wide; dorsal sclerite of endophallus extremely elongate, 3.6× longer than basal piece; Laos |
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– | Aedeagus relatively broad, 9.0× longer than wide; dorsal sclerite of endophallus less elongate, 1.6× longer than basal piece; China |
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19 | Triangular sclerites of endophallus elongate; ventral sclerites absent; basal piece longer than apical piece, with longitudinal row of tiny teeth along lateral margin; India |
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– | Triangular sclerites of endophallus small; ventral sclerites present; basal piece shorter than apical piece, without tiny teeth; China, Laos, Vietnam |
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20 | Males with antennomeres III–X moderately curved; swollen tarsomeres I of front legs not apically narrowed; Taiwan |
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– | Males with antennomeres III–X straight; swollen tarsomeres I of front legs apically narrowed; China |
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21 | Elytra with dense, short, erect setae |
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– | Elytra with sparse, short, erect setae |
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22 | Elytra with extremely coarse punctures, space between punctures narrower than diameters of punctures; Japan |
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– | Elytra with moderately coarse punctures, space between punctures broader than diameters of punctures |
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23 | Body color sexually dimorphic, elytra yellowish brown with metallic green sides, pronotum and vertex metallic green in males; elytra entirely metallic green, prothorax and head yellow in females; hypomeron yellowish brown; antenna in males relatively shorter, antennomeres V–IX less than six times longer than wide; Taiwan |
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– | Body color not sexually dimorphic, elytra, pronotum, and vertex metallic green or blue in both sexes; hypomeron dark or blackish brown; antenna in males more slender, antennomeres V-IX more than six times longer than wide; Taiwan |
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24 | Body color black (Fig. |
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– | Body color metallic green (Fig. |
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25 | Ridges on elytra distinct (Fig. |
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– | Ridges on elytra indistinct (Figs |
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We would like to thank all curators listed above for giving us the opportunity to study the specimens from their collections. We are deeply indebted to David H. Kavanaugh (