Macronotops nigropubescens
Creators: name: Qiu, Jian-Yue
name: Xu, Hao
name: Chen, Li
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Macronotops
Macronotops nigropubescens

description: Macronotops nigropubescens (Mikšić, 1971)
(Figs. 10–11, 33–34, 57–58, 86–89, 116, 128, 155–158, 213–214, 258)
Pleuronota nigropubescens Mikšić, 1971: 208 (type locality: Taiwan-Taiheizan [=Mount Taipingshan, Datong, Ilan Hsien, Taiwan]), fig. 2 parameres; Mikšić, 1976: 174, fig. 22b.
Macronotops nigropubescens (Mikšić): Krikken 1977: 207; Miyake et al. 1991: 39 (Lishan, Taiwan); Kobayashi 1994: 161 (Mt. Senpei, Liukuei, Kaohsiung Hsien, Taiwan); Sakai & Nagai 1998: 351 (Nantou & Taichung, Taiwan), plate. 132, figs. 1567-1–2; Krajčík 1998: 90; Yu et al. 1998:102 (Nantou Hsien, Taiwan)*, plate. 6, figs. 7a-b; Smetana 2006: 307; Krajčík 2012: 152; Bezděk 2016: 403.
Bombodes sexmaculata (nec Kraatz): Kobayashi 1980: 28.
Coilodera sexmaculata (nec Kraatz): Nomura 1970: 71 (Lishan, Taiwan).
Type material. The male holotype is housed in HPM, and now unavailable for this study.
Additional material examined (15♂♂, 14♀♀). Taiwan: 1♂ (QCCC), 19.VII.1983, Sungkang, Nantou Hsien, J. LO; 1♂, 1♀ (QCCC), 24.VIII.1994, Sungkang, Nantou Hsien, H. TORIGAI; 4♀♀ (QCCC), Ren’ai Town, Nantou Hsien, Fu-Sheng HUANG, 3 nd instar in rotten wood 21.III.2014, adult emerged V.2014; 2♂♂ (KSCJ), 7.VIII.2011, Shischitou, Nantou Hsien; 1♂, (KSCJ), 10.X.2011, Shischitou, Nantou Hsien; 1♀, (KSCJ), 12.IX.2011, Shischitou, Nantou Hsien; 1♂ (KSCJ), 13.VIII.2011, Shischitou, Nantou Hsien, C. C. Lo; 1♂, 1♀, (KSCJ), 17.VIII.2011, Shischitou, Nantou Hsien; 1♀, (KSCJ), 27.VIII.2011, Shischitou, Nantou Hsien; 1♀,
(KSCJ), 17.XI.1991, Guguan; 2♂♂, 1♀ (KSCJ), 25.VII.1975, Mt. Lishan, C. Taiwan, Y. MIYAKE; 1♀ (KSCJ), 25.VII.1976, Mt. Lishan, C. Taiwan; 1♀ (KSCJ), 16.VII.1985, Palin, Taoyuan; 1♀ (KSCJ), 10.VIII.1994, Sungkang, Nantou Hsien; 1♂ (KSCJ), 24.VIII.1994, Sungkang, Nantou Hsien; 4♂♂ (KSCJ), 27–29.VIII.1994, Sungkang, Nantou Hsien, H. Torigai. 1♂ (OMNH), 12.VII.1974, Lishan; 1♀ (OMNH), 8.VIII.1977, Lishan, Heping Town, Taichung Hsien, Wataro OUCHI.
Redescription (male). General: Body length 18.0–18.5 mm; width 8.0–8.5 mm, widest at humeral umbone. Body dark brown to black, with week green and wine-red metallic reflections. Surface with fulvous, brown, black and light yellow setae, and yellow tomentous maculae. Head: Dark brown. Dorsal surface with dense, setiferous punctures; setae short, fulvous. Clypeus with week green and wine-red metallic reflections, anterior margin nearly straight and slightly raised; clypeolateral ridge not distinct. Frons flat or with a short, slightly raised, longitudinal ridge (Fig. 10). Maxillary palpus and labial palpus dark brown. Antenna dark brown to black; antennal club very long, about twice the length of antennomeres 2–7 combined; inner side of antennomere 8 with short, dense, fulvous setae (Fig. 10). Ventral surface clad with long, fulvous setae (Fig. 156). Pronotum: Dark brown to black, with week green and wine-red metallic reflections. Widest at base, basomedian area depressed. Lateral margin curved; posterior margin distinctly protruded. Surface densely clad with setiferous punctures; setae long, brown and black (Fig. 155). Scutellum: Black, with long, sparse, light yellow and fulvous setae. Elytron: Dark brown to black, with week wine-red metallic reflections; with posthumeral macula, lateral macula, and median macula, without distal macula. Surface densely clad with setae; setae long between sutural and discolateral costae; setae light yellow on maculae; setae brown on disc, juxtascutellar area, and distal declivity; setae dark brown around humeral umbone; setae on lateral declivity black; humeral umbone glabrous (Fig. 155). Mesepimeron, metepisternum and metepimeron: Dark brown to black, with light yellow and black setae. Sternum: Preprosternum black, almost glabrous, sides with sparse, fulvous setae. Mesosternum black, with light yellow setae. Mesometasternal process short, glabrous, black, apex rounded; mesometasternal suture depressed, with long, yellow setae. Metasternum black, with dense light yellow and fulvous setae; middle portion glabrous (Fig. 156). Pygidium: Dark brown. Surface with dense, yellow (or fulvous) and dark brown setae; a small, round, yellow macula in middle (Fig. 86). Abdomen: Dark brown, with wine-red metallic reflections. Without median groove. Six abdominal sternites visible; sternites III–V clad with sparse, fulvous setae; setae on sternite II long, dense; setae on sternites III–V short, sparse, but longer on sides; setae near posterior margin of sternite VI long, dense; sternite VII almost glabrous. Sternites II–V densely clad with black and fulvous setae in dorsal and lateral portion (Fig. 156). Legs: Slender, simple. Metacoxa black, with long, light yellow setae. Femora and tibia dark brown to black, with long, fulvous and light yellow setae. Tiny teeth between 3 large teeth of protibia distinct (Fig. 3 3); mesotibia and metatibia with a spine near the middle of outer margin; metatibia with a row of brush-like, fulvous setae along inner margin (Figs. 155–156); dorsal tooth of metatibia shorter than basitarsus of metatarsus (Fig. 57); outer tooth small, indistinct. Tarsi reddish-brown; basitarsus of male metatarsus without cluster of long setae (Fig. 57). Genitalia: Parameres broad, long; apex rounded, expanded; Apical half of interparameral split constricted; base with membrane, divided in medial. Median lobe ribbon-like; less than twice length of paramere (Fig. 116).
Female. Body length 16.5–18.5 mm; width 7.5–8.5 mm. Except for sexual dimorphism characteristics of the genus, pronotum and elytra with weaker metallic reflections (Fig. 157); tiny teeth in protibia indistinct (Fig. 34); dorsal and outer teeth of metatibia larger, and longer than basitarsus of metatarsus (Fig. 58); setae on mesotibia and metatibia sparser and shorter (Fig. 58).
Variability. Median maculae of elytron and the yellow macula on pygidium is absent in some individuals (Figs. 87, 89).
Differential diagnosis. Length of clypeus almost equal to width. Antenna dark brown to black (Figs. 10–11). Dorsal surface mostly clad with brown or black setae. Elytra with posthumeral maculae, median maculae, and lateral maculae (Figs. 155, 157). Pygidium usually with a small, round, yellow macula (Figs. 86, 88), sometimes absent (Figs. 87, 89). Abdominal sides without yellow maculae (Figs. 156, 158); male abdomen without median groove. Legs dark brown to black; protibia with tiny teeth (Figs. 33–34); dorsal tooth of male metatibia shorter than basitarsus of metatarsus (Fig. 57); basitarsus of male metatarsus without cluster of long setae (Fig. 57).
This species resembles M. olivaceofuscus, but can be readily differentiated by antenna dark brown to black (Figs. 10–11; in M. olivaceofuscus yellowish-brown, Figs. 12–13), body color darker, pygidium with a small macula or absent (Figs. 86–89; macula larger in M. olivaceofuscus, Figs. 90–91), and parameres in different shape (Fig. 116).
Distribution. Taiwan Island.
description: Published as part of Qiu, Jian-Yue, Xu, Hao & Chen, Li, 2019, A revision of the rare flower beetle genus Macronotops Krikken (Coleoptera: Scarabaeidae: Cetoniinae) from Asia with biological notes, pp. 1-65 in Zootaxa 4556 (1) on pages 28-29, DOI: 10.11646/zootaxa.4556.1.1, http://zenodo.org/record/2585204