Rhyparus gracilis Arrow, 1905

Anichtchenko, Alexander, Minkina, Łukasz, Vasiljeva, Anastasija & Medina, Milton Norman D., 2021, A review of the genus Rhyparus in the Philippines, with descriptions of two new species from Mindanao (Coleoptera: Scarabaeidae: Aphodiinae), Acta Entomologica Musei Nationalis Pragae 61 (1), pp. 99-111 : 102-103

Rhyparus gracilis Arrow, 1905

( Figs 3a–c , 9 , 15 , 21 , 27a–b )

Material examined. PHILIPPINES: Mංඇൽൺඇൺඈ: 1 J 3 ♀♀, Kalatungan, Bukidnon, ix.2016, local coll. ( LMCN); 4 ♀♀, Bukidnon, Kitanglad Mts., Mt.Kitanglad, 8°03′24.8″ N 125°00′22.9″E, 1200 m, 23.–24.x.2018, Medina MND. leg. ( UMCRC); 1 J, Davao City, Talomo Mts., Mt.Talomo, 7°04′36.9″N 125°20′13.2″E, 1100 m, 25.–30.iii.2019, Medina MND.

leg. ( UMCRC); 1 J, Araibo, Pantukan, Compostela Valley, Candalaga Mts., 7°16′35.3″N 126°10′12.8″E, 900 m, 15.–20.x.2019, Anichtchenko A. leg. ( DUBC); 1 J, New Bataan, Cagan, 7°16′25″N 126°13′23.7″E, 18.–21.x.2019, Anichtchenko A. leg. ( DUBC)

Diagnosis. Medium-sized to large species: body length 5.2–7.0 mm ( Figs 3a–c ). Head depicted in Fig. 9 ; epipharynx as in Fig. 15 . Intermediate lobes of pronotum as large as anterior ones; median intercosta with dense punctation; second and third intercostae of pronotum with dense punctation basally. First, second and fourth intercostae of elytra with two rows of medium-sized punctures, third intercosta with three rows of medium-sized punctures basally – medium row presenting to about midlength of elytra. All protrusions of caudal bulb connected, weakly developed ( Figs 3a–c , 21 ) (see also SඍൾൻඇංർΚൺ 1998). Aedeagus as in Figs 27a–b .

Distribution. Species known from Papua New Guinea: Milne Bay, Central Province, Eastern Highlands, Gulf, Madang, Morobe, Oro, Western Highlands, Western Province, Sepik; and Indonesia: West Papua (Mൾඇർඅ et al. 2013). First record from the Philippines: Mindanao Island.

Figures

Fig. 3. Habitus of Rhyparus gracilis Arrow, 1905: a – dorsal view; b – right dorsolateral view; c – right lateral view. Scale bar = 1.0 mm.

Figs 7–12. Head of Rhyparus species, frontal view: 7 – R. barclayi Masumoto, Ochi & Ho, 2019; 8 – R. flavohirtus sp. nov.; 9 – R. gracilis Arrow, 1905; 10 – R. helophoroides Fairmaire, 1893; 11 – R. mindanaoensis sp. nov.; 12 – R. philippinensis Arrow, 1905. Scale bar = 1.0 mm.

Figs 13–18. Epipharynx of Rhyparus species: 13 – R. barclayi Masumoto, Ochi & Ho, 2019; 14 – R. flavohirtus sp. nov.; 15 – R. gracilis Arrow, 1905; 16 – R. helophoroides Fairmaire, 1893; 17– R. mindanaoensis sp. nov.; 18 – R. philippinensis Arrow, 1905. Scale bar = 0.5 mm.

Figs 19–24. Elytra of Rhyparus species, oblique apico-dorsolateral view: 19 – R. barclayi Masumoto, Ochi & Ho, 2019; 20 – R. flavohirtus sp. nov.; 21 – R. gracilis Arrow, 1905; 22 – R. helophoroides Fairmaire, 1893; 23 – R. mindanaoensis sp. nov.; 24 – R. philippinensis Arrow, 1905. Scale bar = 1.0 mm.

Figs 25–30.Aedeagus of Rhyparus species, a – lateral view, b – dorsal view. 25 – R.barclayi Masumoto, Ochi & Ho, 2019; 26 – R. flavohirtus sp. nov.; 27 – R. gracilis Arrow, 1905; 28 – R. helophoroides Fairmaire, 1893; 29 – R.mindanaoensis sp. nov.; 30 – R.philippinensis Arrow, 1905. Scale bar = 0.5 mm.