Biodiversity Data Journal :
Taxonomic Paper
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Corresponding author: Seunghwan Lee (seung@snu.ac.kr)
Academic editor: Lech Karpiński
Received: 08 Feb 2022 | Accepted: 16 Apr 2022 | Published: 12 May 2022
© 2022 Seunghyun Lee, Seunghwan Oh, Jinbae Seung, Hyunkyu Jang, Minhyeuk Lee, Woong Choi, Seunghwan Lee
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Lee S, Oh S, Seung J, Jang H, Lee M, Choi W, Lee S (2022) New report of two Cerambycinae tribes in South Korea: Stenopterini and Thraniini (Coleoptera, Cerambycidae). Biodiversity Data Journal 10: e81832. https://doi.org/10.3897/BDJ.10.e81832
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Despite the recent advancement of faunal research of longhorned beetles in South Korea, the number of tribes of Cerambycinae has remained at 16 during the last 40 years.
In this paper, two cerambycine tribes, Stenopterini Gistel, 1848 and Thraniini Gahan, 1906, are reported for the first time in Korea by species Merionoeda (Macromolorchus) hirsuta (Mitono & Nishimura, 1936) and Thranius variegatus Bates, 1873, respectively. Morphological comments, biological observations and illustrations of both species are provided. An updated key to tribes of Korean cerambycinae is also provided.
The subfamily Cerambycinae (Coleoptera, Cerambycidae) is the second-largest group amongst six cerambycid subfamilies (sensu
Tribal classification of Korean Cerambycinae by various authors (bold words indicate tribal names different from the current classification; * = tribe new to Korean fauna).
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This study |
Anaglyptini |
Anaglyptini |
Anaglyptini |
Anaglyptini |
Callichromatini |
Callichromatini |
Callichromatini |
Callichromatini |
Callidiini |
Callidiini |
Callidiini |
Callidiini |
Callidiopini |
Callidiopini |
Callidiopini |
Callidiopini |
Cerambycini |
Cerambycini |
Cerambycini |
Cerambycini |
Cleomenini |
Cleomenini |
Cleomenini |
Cleomenini |
Clytini |
Clytini |
Clytini |
Clytini |
Hesperophanini |
Hesperophanini |
Hesperophanini |
Hesperophanini |
Molorchini |
Molorchini |
Molorchini |
Molorchini |
Obriini (= Obriini + Stenhomalini) |
Obriini (= Obriini + Stenhomalini) |
Obriini |
Obriini |
Stenhomalini |
Stenhomalini |
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Phoracanthini |
Phoracanthini |
Phoracanthini |
Phoracanthini |
Purpuricenini |
Purpuricenini |
Purpuricenini |
Trachyderini |
Pyrestini |
Pyrestini |
Pyrestni |
Pyrestini |
Rosaliini |
Rosaliini |
Rosaliini |
Compsocerini |
Methiini (=Xystrocerini) |
Methiini (=Xystrocerini) |
Xystrocerini |
Xystrocerini |
Stenopterini* |
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Thraniini* |
Samples used in this study were deposited in SNU (Seoul National University) and private collections of H. Jang and S. Oh. Photographs of dorsal and ventral habitus were captured by a Canon digital camera EOS 80d, Canon MP-E 65 mm f/2.8 1–5× macro lens or Tamron SP 60 mm F/2.0 lens mounted. Multiple image stacking was conducted by Zerene Stacker 1.04 software (Zerene Systems 2014; http://www.zerenesystems.com/cms/stacker). To examine male and female genitalia, the specimens were relaxed in distilled water for two to four hours at room temperature. Then the genitalia were separated from the last abdomen segment using a hooked pin or forceps, without removing the abdomen. Separated genitals were immersed in 10% potassium hydroxide (KOH) solution at room temperature for eight to twelve hours, depending on the sample condition. For the illustration of genital structure, a microscope (DM 4000B, Leica Microsystem, Wetzlar, Germany) with a USB digital camera (Infinity3, Lumenera Corporation, Ottawa, Ontario) was used.
Hakata hirsuta Mitono & Nishimura, 1936: 34.
Hakata klapperichi Tippmann, 1955: 100.
Body length 10-14 mm (Fig.
Korea (new record), China, Japan, Taiwan.
Emergence begins in early July in the southern part of the Korean Peninsula. Beetles are most active in warm clear weather and visit the male flower of Mallotus japonicus (Thunb.) Muell. Arg. The population size in the site seems remarkably high as 139 beetles were caught in a few hours. The number of males visiting flowers is approximately ten times larger than that of females.
Thranius variegatus Bates, 1873: 196.
Thranius sapporensis Kano, 1933: 132.
Body length of examined female 13.4 mm (Fig.
Korea (new record), Japan, Taiwan.
No additional beetles have been collected after the first discovery, though we launched numerous flight intercept traps every year at the same spot.
Updated key to tribes of the subfamily Cerambycinae in Korea (modified from Lee, 1987) |
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1 | Abdomen not fully covered by elytra, abdominal segments partly exposed | 2 |
– | Abdomen completely covered by elytra | 4 |
2 | Elytra posteriorly narrowed, abdomen posteromedially and posterolaterally exposed | Thraniini |
– | Elytra posteriorly shortened, abdomen posteriorly exposed | 3 |
3 | Elytal apex weakly angulated, hind legs with dense setae, female 4th sternite posteriorly with dense setae | Stenopterini |
– | Elytral apex rounded, hind leg sparsely pubescent, female sternite plain | Molorchini |
4 | Antennomeres V-X flat, prominently serrate | Pyrestini |
– | All antennomeres uniformly filiform | 5 |
5 | Prothorax distinctly longer than wide | 6 |
– | Prothorax not longer than wide | 9 |
6 | Prothorax slightly curved laterally, without lateral tubercles | 7 |
– | Prothorax parallel-sided with strong lateral tubercles | 8 |
7 | Antennomeres III-XI with spine at inner apex | Phoracanthini |
– | Each antennomere without spine at inner apex | Callidiopini |
8 | Hind femur thickened rapidly on apical half | Obriini |
– | Hind femur gradually thickened towards apex | Stenhomalini |
9 | Compound eyes coarsely faceted | 10 |
– | Compound eyes finely faceted | 12 |
10 | Prosternal process expanded, genae moderately wide | 11 |
– | Prosternal process not expanded, genae distinctly short | Hesperophanini |
11 | Pronotum with irregular transverse or longitudinal grooves on disc | Cerambycini |
– | Pronotum with regular punctation on disc | Xystrocerini |
12 | Body more or less flat, elytra completely flat, except lateral margin in lateral view | 13 |
– | Body almost cylindrical, elytra slightly convex in lateral view | 17 |
13 | Metaventrite expanded towards mesocoxal cavity, mesocoxal cavity closed | Cleomenini |
– | Metaventrite not expanded towards mesocoxal cavity, mesocoxal cavity opened | 14 |
14 | Antennomere III-IX with black setae on apical half; elytra sky-blue with black markings | Compsocerini |
– | Antennomere III-IX without black setae; elytra not sky-blue | 15 |
15 | Prothorax laterally without tubercle | Callidiini |
– | Prothorax laterally with spine-like tubercle | 16 |
16 | Hind tibia flat, elytra green or metallic navy with two yellow bands | Callichromatini |
– | Hind tibia cylindrical, elytra black and red | |
17 | Metepimeron expanded towards abdominal sternite | Clytini |
– | Metepimeron not expanded towards abdominal sternite | Anaglyptini |
This research was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR201601203, NIBR202002205) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF2020R1I1A206948412).