Clinterocera jucunda
Creators: name: Xu, Hao
name: Qiu, Jian-Yue
name: Huang, Guo-Hua
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Clinterocera
Clinterocera jucunda

description: Key to species of the Clinterocera jucunda species group
Prerequisite for the use of the key is to ensure cleanliness of specimen surface. Adults of Clinterocera usually walk on ground and specimens are usually greasy and worn, that makes the tomentous pattern on dorsal surface indiscernible. Those worn specimens are difficult to identify correctly. The cleaning method for greasy individuals has been provided by Qiu & Xu (2016).
1 Head and pronotum red or orange......................................................................... 2
- Head and pronotum not red or orange...................................................................... 3
2 Scutellum black; elytron almost without tomentum, prediscal area and lateral declivity red, mediodiscal and postdiscal areas black; tarsi thick (Fig. 39)................................................. Clinterocera bicolor (Nonfried, 1893)
- Scutellum orange-red; elytron orange-red with a small lateral tomentous marking and a black juxtascutellar marking; tarsi thin (Fig. 130)............................................................ Clinterocera ishikawai (Kurosawa, 1973)
3 Pronotum with pronotal tomentous bands (Figs. 122, 141)..................................................... 4
- Pronotum without tomentous bands, disc evenly covered with tomentum or tomentum absent......................... 5
4 Elytra without lateral tomentous band, posthumeral and lateral tomentous spots present (Figs. 96, 122, 141, 167, 171). Taiwan .................................................................... Clinterocera nigra (Kano, 1931) (in part)
- Elytra with lateral tomentous bands, posthumeral and lateral tomentous spots absent. Sulawesi ............................................................................................... Clinterocera heinrichi (Krikken, 2016)
5 Juxtascutellar area of elytra without black marking (Figs. 104, 132, 146)................ Clinterocera raui (Paulian, 1961)
- Juxtascutellar area of elytra with a black marking or totally black................................................ 6
6 Elytra without lateral tomentous band (Figs. 169–170). Taiwan ................. Clinterocera nigra (Kano, 1931) (in part)
- Elytra with lateral tomentous bands (or lateral and distal declivity clad with tomentum). From the Asian continent and Hainan .................................................................................................... 7
7 Body completely black (Figs. 120, 128, 155–156, 165, 176–178)................................................ 8
- Body not completely black............................................................................. 10
8 Head and pronotum with sparse tomentum (Figs. 120, 140, 165)...... Clinterocera krikkeni Xu & Qiu, new species (in part)
- Head and elytral disc covered with tomentum (Figs. 98, 128, 155–156, 176–178)................................... 9
9 Punctures on pronotum and elytra larger, denser (Figs. 22–23); apex of parameres expanded (Fig. 78)............................................................................................ Clinterocera yunnana (Moser, 1911)
- Punctures on pronotum and elytra smaller, sparser (Figs. 8–9); apex of parameres narrowed (Fig. 64)................................................................................... Clinterocera davidis (Fairmaire, 1878) (in part)
10 Lateral tomentous spots of elytra absent, or very small (Figs. 139, 142–143, 162–164, 166, 173–175,)................. 11
- Elytra with distinct lateral tomentous spots (Figs. 136–138, 147–154, 159–161, 179)............................... 14
11 Ventral surface and mentum heavily tomentous (Fig. 125).................. Clinterocera velutina Xu & Qiu, new species
- Ventral surface with sparse tomentum; mentum without tomentum.............................................. 12
12 Punctures on elytra short (Fig. 21); male tarsi thick (Fig. 35)............ Clinterocera vietnamensis Xu & Qiu, new species
- Punctures on elytra long or short (Figs. 13, 15); male tarsi thin (Figs. 31–32)..................................... 13
13 Elytra orange-red, with a black juxtascutellar marking (Figs. 118, 139, 162–164).... Clinterocera jucunda (Westwood, 1873)
- Elytra black, with a small red marking on postdiscal area (Fig. 166).... Clinterocera krikkeni Xu & Qiu, new species (in part)
14 Lateral tomentous band on elytron not reached posthumeral emargination (Figs. 136, 148–149)...................................................................................... Clinterocera brevifasciata Xu & Qiu, new species
- Lateral tomentous band on elytron reached posthumeral emargination (Figs. 137–138, 147).......................... 15
15 Body usually less than 18 mm in length (Fig. 134); punctures on elytra elliptic, smaller, sparser (Fig. 27).................................................................................. Clinterocera sinensis Xu & Qiu, new species
- Body usually more than 18 mm in length (Figs. 114, 116); punctures on elytra elongate, larger, denser (Figs. 9, 11)....... 16
16 Except pronotal margin, pronotum usually clad with tomentum; black juxtascutellar marking small, not connected to posthumeral emargination (Figs. 114, 150–154)............................ Clinterocera davidis (Fairmaire, 1878) (in part)
- Except pronotal margin, pronotum usually without tomentum; black juxtascutellar marking large, connected to posthumeral emargination, even occupied the entire prediscal area of elytra (Figs. 116, 159–161)...................................................................................................... Clinterocera donckieri (Bourgoin, 1924)
description: Published as part of Xu, Hao, Qiu, Jian-Yue & Huang, Guo-Hua, 2018, Taxonomy and natural history of the myrmecophilous genus Clinterocera Motschulsky, 1858 (Coleoptera: Scarabaeidae: Cetoniinae) from China and adjacent regions: revision of the C. jucunda species group, pp. 301-352 in Zootaxa 4531 (3) on pages 306-307, DOI: 10.11646/zootaxa.4531.3.1, http://zenodo.org/record/2614658