Macronotops medogensis Qiu, Xu & Chen, 2019

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, Zootaxa 4556 (1), pp. 1-65 : 45-47

Macronotops medogensis Qiu, Xu & Chen new species

( Figs. 20–21 , 44–45 , 68–69 , 102–103 , 121 , 133 , 185–190 , 223–224 , 276–277 , 311 )

Type material. CHINA: Xizang: ♂ (Holotype, SWU), 15–20.VIII.2011, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80K), Mêdog County, 2,300 m, Yang HE. Paratypes (15♂♂, 9♀♀) : 1♀ (Allotype, SWU), 15–20.VIII.2011, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,300 m, Yang HE ; 1♂, 1♀ ( QCCC), 15–20.VIII.2011, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,300 m, Yang HE ; 2♂♂, 2♀♀ ( CCCC), 9.VIII.2012, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, Xiao-Dong YANG ; 2♂♂, 2♀♀ ( QCCC), 31.VII.2015, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, Zhuo CHEN ; 4♂♂, 1♀ ( QCCC), 17–19.VII.2016, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,130 m, Jian-Yue QIU & Hao XU ; 1♂, 1♀ ( CCCC), 29.VII.2016, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,111 m, Xiao-Dong YANG ; 1♂ ( CCCC), 1.VIII.2016, Mêdog County, Xiao-Dong YANG ; 1♀ ( CCCC), 13.VIII.2016, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,111 m, Xiao-Dong YANG ; 1♂ ( CCCC), 14.VIII.2016, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,111 m, Xiao-Dong YANG ; 1♂ ( QCCC), 13.VII.2017, Yarlung Tsangpo Grand Canyon Nature Reserve, Bononggong (80 K) , Mêdog County, 2,130 m, Si- Yao HUANG ; 1♂ ( LQCL), VIII.2012, Hanmi, Mêdog County, Hao HUANG ; 1♂ ( KSCJ), VII.2012, Hanmi, Motuo [Mêdog] .

Holotype (male). General: Body length 15.5 mm; width 7.0 mm, widest at humeral umbone, gradually narrowed backward. Body brown to dark brown. Surface with fulvous, brown, black and light yellow setae, and yellow tomentous maculae. Head: Brown. Dorsal surface with sparse, fulvous setae; setae long on frons. Clypeus narrow; anterior margin arcuated, slightly raised; clypeolateral ridge indistinct. Frons with a slightly raised longitudinal ridge ( Fig. 20 ). Maxillary palpus and labial palpus brown. Antenna yellowish-brown; antennal club very long, about twice length of antennomeres 2–7 combined; inner side of antennomere 8 with short, dense, fulvous setae ( Fig. 20 ). Ventral surface clad with long, fulvous setae ( Fig. 186 ). Pronotum: Brown. Widest at base, basomedian area depressed. Lateral margin curved; posterior margin distinctly protruded; disc with two pronotal ridges and a narrow, longitudinal ridge medially ( Fig. 185 ). Surface densely clad with fulvous and black setae; black setae only on basolateral area; medial ridge glabrous ( Fig. 185 ). Scutellum: Dark brown, with sparse, fulvous setae. Elytron: Brown; lateral macula and distal macula large; without posthumeral macula and median macula. Surface densely clad with setae; setae long between sutural and discolateral costae; setae light yellow on maculae; setae dark brown to black on lateral declivity except for posthumeral area; setae fulvous on the rest of elytron; humeral umbone glabrous ( Fig. 185 ). Mesepimeron: Dark brown to black, clad with yellow tomenta and light yellow setae. Metepisternum: Dark brown to black, clad with fulvous setae and a small tomentous macula. Metepimeron: Black, with long, fulvous setae. Sternum: Preprosternum reddish-brown, with sparse, long, fulvous setae. Mesosternum dark brown, with long, fulvous setae. Mesometasternal process short, glabrous, brown, apex rounded; mesometasternal suture depressed, with long, fulvous setae. Metasternum black, with long, dense, fulvous setae; middle portion glabrous ( Fig. 186 ). Pygidium: Dark brown; with dense, fulvous setae; a small, triangular, yellow, tomentous macula in middle ( Fig. 102 ). Abdomen: Reddish-brown to dark brown. Median portion slightly depressed. Six abdominal sternites visible; sternites clad with fulvous setae; setae on sternite II dense, long; setae on sternites III–V short, sparse in medial, but longer and denser on sides; setae near posterior margin of sternite VI long, dense; sternite VII almost glabrous, with sparse, short setae on sides; sternites II–V densely clad with black and fulvous setae in dorsal and lateral portion ( Fig. 186 ). Legs: Slender, simple. Metacoxa black, with long, light yellow and black setae. Femora and tibia dark brown, with fulvous setae. Protibia with 3 teeth; the proximal tooth small and indistinct; without tiny tooth ( Fig. 44 ). Mesotibia with a small spine near middle of outer margin; metatibia with a row of long, brush-like, sparse, fulvous setae along inner margin ( Figs. 185–186 ); dorsal tooth of metatibia distinctly longer than basitarsus, outer tooth absent ( Fig. 68 ). Tarsi dark brown; each segment of metatarsus with sparse, long setae ( Fig. 68 ). Genitalia: Parameres broad, long; apex slightly rounded. Interparameral split narrow; base with little membrane, protruding medially. Median lobe flagelliform, gradually narrowed to apex; apical half twisted; very long ( Fig. 121 ).

Female. Body length 15.5–19.5 mm; width 7.5–8.5 mm. Except for sexual dimorphism characteristics of the genus, body color darker ( Figs. 188–190 ), abdominal sternites with more short, fulvous setae in medial ( Fig. 189 ); dorsal tooth of metatibia larger ( Fig. 69 ), setae on mesotibia and metatibia sparser, basitarsus of metatarsus with less setae ( Fig. 69 ).

Variability. Male paratypes length 14.5–17.0 mm, width 6.5–7.5 mm. The lateral maculae and tomentous maculae on the mesepimeron could be very small, even absent ( Fig. 187 ). The setae between the sutural and discolateral costae of the elytra are black in some females ( Fig. 188 ).

Differential diagnosis. Length of clypeus greater than width. Antenna yellowish-brown ( Figs. 20–21 ), male antennal club very long. Disc of pronotum with a glabrous, narrow, longitudinal ridge medially ( Figs. 185, 188, 190 ). Elytra usually with lateral maculae and distal maculae ( Figs. 185, 188, 190 ). Metepisternum usually with a yellow macula ( Figs. 185, 188 ). Pygidium with a small triangular macula ( Figs. 102–103 ). Abdominal sides without yellow macula. Dorsal tooth of male metatibia distinctly longer than basitarsus of metatarsus ( Fig. 68 ).

This new species is highly similar to M. curvimarginatus , but can be distinguished by antenna yellowish- brown ( Figs. 20–21 ; in M. curvimarginatus dark brown, Figs. 18–19 ), pygidium with a small triangular tomentous macula ( Figs. 102–103 ; in M. curvimarginatus usually absent, Figs. 99, 101 ), abdominal surface with more setiferous punctures ( Figs. 186, 189 ), posthumeral macula and median macula on male elytron absent ( Fig. 185 ; present in M. curvimarginatus usually absent, Figs. 175, 177–178 ), parameres distinctly longer, and basal half of median lobe wider ( Fig. 121 ).

Etymology. The specific name of the new species refers to its area of occurrence, Mêdog County, China.

Distribution. China: Xizang.

Natural history. A photograph of the adult of this new species feeding the sap on a tree with Neolucanus sp. was presented in Huang & Chen (2013).

Remarks. Macronotops medogensis new species is currently only found in Mêdog County of Xizang ( Fig. 259 ) and occurs sympatrically with M. curvimarginatus , and the differences of these two species are provided in the differential diagnosis.

Figures

FIGURES 1–23. Head of Macronotops (male in left, female in right). 1, M. biserratus new species; 2–3, M. dianensis new species; 4–5, M. fulvoguttatus; 6–7, M. fulvopilosus; 8–9, M. miksici new species; 10–11, M. nigropubescens; 12–13, M. olivaceofuscus; 14–15, M. sexmaculatus; 16–17, M. vuilleti; 18–19, M. curvimarginatus; 20–21, M. medogensis new species; 22–23, M. ovaliceps. Arrows emphasize the length of antenna club.

FIGURES 24–47. Protibia of Macronotops (male and female). 24, M. biserratus new species; 25–26, M. dianensis new species; 27–28, M. fulvoguttatus; 29–30, M. fulvopilosus; 31–32, M. miksici new species; 33–34, M. nigropubescens; 35–36, M. olivaceofuscus; 37–38, M. sexmaculatus; 39–40, M. vuilleti; 41, Macronotops sp.; 42–43, M. curvimarginatus; 44–45, M. medogensis new species; 46–47, M. ovaliceps. Arrows indicate the angle between large teeth and the outer margin of protibia.

FIGURES 66–71. Metatibia and basitarsus of metatarsus of the Macronotops ovaliceps species group (male in left, female in right). 66–67, M. curvimarginatus; 68–69, M. medogensis new species; 70–71, M. ovaliceps.

FIGURES 99–110. Pygidium of the Macronotops ovaliceps species group (size of macula and color of setae). 99–101, M. curvimarginatus; 102–103, M. medogensis new species; 104–110, M. ovaliceps.

FIGURES 111–122. Male genitalia of Macronotops (apical view). 111, M. biserratus new species; 112, M. dianensis new species; 113, M. fulvoguttatus; 114, M. fulvopilosus; 115, M. miksici new species; 116, M. nigropubescens; 117, M. olivaceofuscus; 118, M. sexmaculatus; 119, M. vuilleti. 120, M. curvimarginatus; 121, M. medogensis new species; 122, M. ovaliceps. Arrows indicate the membrane between the parameres.

FIGURES 122–134. Male genitalia of Macronotops (lateral view). 123, M. biserratus new species; 124, M. dianensis new species; 125, M. fulvoguttatus; 126, M. fulvopilosus; 127, M. miksici new species; 128, M. nigropubescens; 129, M. olivaceofuscus; 130, M. sexmaculatus; 131, M. vuilleti; 132, M. curvimarginatus; 133, M. medogensis new species; 134, M. ovaliceps.

FIGURES 185–190. Habitus of Macronotops medogensis new species (dorsal and ventral view). 185–186, male holotype; 187, male paratype; 188–190, female paratypes.

FIGURES 215–226. Habitus of Macronotops (male in left, female in right; oblique view). 215–216, M. olivaceofuscus; 217– 218, M. sexmaculatus; 219–220, M. vuilleti; 221–222, M. curvimarginatus; 223–224, M. medogensis new species; 225–226, M. ovaliceps.

FIGURES 276–281. Habitat of Macronotops. 276–277, habitat of M. sexmaculatus and M. medogensis new species in Valley near Bononggong of Mêdog (Xizang, China); 278, an adult of M. sexmaculatus feeding on sap of bamboo (photograph by Yang He); 279–281, habitat of M. vuilleti in Mount Huanglianshan (Yunnan, China), and larva in fallen rotten wood.

FIGURES 310–312. Living adults of the Macronotops ovaliceps species group in artificial conditions. 310, newly emerged adults of M. curvimarginatus in pupal cell; 311, adults of M. medogensis new species feeding on apple; 312, newly emerged adult of M. ovaliceps in pupal cell.

FIGURES 175–178. Habitus of Macronotops curvimarginatus (males, dorsal and ventral view). 175–176, (Bomi, SE Xizang, China); 177, (Zayü, SE Xizang, China); 178, (Bomi, SE Xizang, China).

FIGURES 258–260. Known distribution of Macronotops. 258, Distribution for the whole genus; 259, map of SE Xizang, China; 260, map of W Sichuan, China. Syncretic markers indicate identical or very close localities; type localities of the known species are underlined, that of M. olivaceofuscus is missing because the precise type locality is unknown.