Orphnus mysoriensis Westwood, 1845

Frolov, Andrey V. & Akhmetova, Lilia A., 2021, Review of the Orphninae (Coleoptera: Scarabaeidae) of Sri Lanka, with description of a new species of genus Orphnus Macleay, 1819, European Journal of Taxonomy 767 (1), pp. 40-54 : 41-45

Orphnus mysoriensis Westwood, 1845

Figs 1–2

Orphnus mysoriensis Westwood, 1845: 176 .

Orphnus detegens Walker, 1859a: 54 (synonymy by Arrow 1912).

Orphnus scitissimus Walker, 1859b: 220 (synonymy by Arrow 1912).

Orphnus mysoriensis – Lacordaire 1856: 130 (catalogue). — Gemminger & Harold 1869: 1073 (catalogue). — Arrow 1912: 29 (catalogue, synonymy). — Schmidt 1913: 80 (catalogue). — Mittal 2005: 46 (catalogue). — Frolov 2012: 794 (catalogue). — Khaustov & Frolov 2018: 182 (host of Trochometridium tribulatum Cross, 1965 ).

Orphnus detegens – Preudhomme de Borre 1886: 26 (catalogue).

Orphnus scitissimus – Preudhomme de Borre 1886: 26 (catalogue).

Differential diagnosis

Orphnus mysoriensis is similar to O. medvedevi sp. nov. in having the pronotum with a more or less developed tubercle on the base medially and the endophallus with one group of spinules. It differs from the latter in body length (8.0–10.0 mm, as opposed to 4.6–6.0 mm in O. medvedevi sp. nov.), spinules of endophallus as a rather dispersed group of more than 10 spinules (as opposed to a compact cluster consisting of less than 10 spinules in O. medvedevi sp. nov., Fig. 1G vs Fig. 3G ), and tubercle on the base of pronotum normally with two punctures (as opposed to always smooth tubercle in O. medvedevi sp. nov.).

Type material of Orphnus mysoriensis

Lectotype (here designated, Fig. 1A–E, G ) INDIA • ♂; “Mysore / Orphnus mysoriensis Westw / TYPE WESTWOOD Trans. Ent. Soc. 4. 1846. P.176. Coll. Hope Oxon. / TYPE COL: 484 1/3 Orphnus mysoriensis Westw. HOPE DEPT.OXFORD”; OUM.

Paralectotypes INDIA • 1 ♂; “ Mysore / TYPE COL: 484 2/3 Aegidium mysoriensis Westw. HOPE DEPT.OXFORD”; OUM • 1 ♀; “ Mysore / TYPE COL: 484 3/3 Aegidium mysoriensis Westw. HOPE DEPT.OXFORD”; OUM .

Type material of Orphnus detegens

Lectotype (here designated, Fig. 2 E – G ) SRI LANKA • ♂; “Type / Ceylon 59 106 / Orphnus detegens Walker. a.n.H. (type) / detegens Wlk ”; BMNH .

Additional material examined

SRI LANKA – Central Province • 3 ♂♂, 4 ♀♀; Kandy ; 7°18′ N, 80°38′ E; MHNG • 2 ♂♂; same locality data as for preceding; MNHB • 7 ♂♂; same locality data as for preceding; 1–18 Apr. 1991; Jiri Kolibac leg.; NHMB • 1 ♀; same locality data as for preceding; 18 Mar. 1973; G. Zimmermann leg.; MNHB • 2 ♂♂; same locality data as for preceding; 1908; G.B. Longstaff leg.; OUM • 2 ♂♂, 2 ♀♀; Nalanda ; 7°40′ N, 80°39′ E; V. De Poll leg.; MNHN • 1 ♀; same locality data as for preceding; 1889; I.Z. Kannegeter leg.; MNHN • 2 ♂♂, 1 ♀; Peradenyia ; 7°16′ N, 80°35′ E; MHNG • 3 ♂♂; same locality data as for preceding; Friederichs S.G. leg.; MNHB • 2 ♂♂; same locality data as for preceding; 2 Apr. 1907; O. John leg.; ZIN • 1 ♂; same locality data as for preceding; 3 Apr. 1907; O. John leg.; ZIN • 2 ♂♂, 1 ♀; same locality data as for preceding; Apr. 1901; MNHN • 5 ♂♂; same locality data as for preceding; Apr. 1914; Friederichs S.G. leg.; MNHB • 2 ♂♂; same locality data as for preceding; Apr. 1939; J. Vinson leg.; MNHN • 1 ♀; Punduloya ; 7°01′ N, 80°40′ E; OUM • 1 ♂, 1 ♀; Sigiriya ; 7°57′ N, 80°45′ E; Oct. 1977; MCSN • 1 ♂, 1 ♀; same locality data as for preceding; Oct. 1977; NMPC • 1 ♂; Weragamtota ; 7°19′ N, 80°59′ E; 13 Sep. 1953; F. Keiser leg.; NHMB . – North Central Province • 2 ♀♀; Anuradhapura ; 8°19′ N, 80°24′ E; Friederichs S.G. leg.; MNHB • 4 ♂♂; Kala Oya ; 8°13′ N, 80°06′ E; 7 Nov. 1983; MNHN • 1 ♂; same locality data as for preceding; 8 Nov. 1983; MNHN • 2 ♂♂; Nat. Park Wilpattu ; 8°25′ N, 80°03′ E; 7 Oct. 1982; G.S. Medvedev leg.; ZIN • 1 ♂; Nat. Park Wilpattu, Talawila ; 8°25′ N, 80°03′ E; 9 Oct. 1982; G.S. Medvedev leg.; ZIN • 1 ♂, 3 ♀♀; Wilpattu N.P. 17 km WNW entrance Tala Wila ; 8°25′ N, 80°03′ E; 8 Oct. 1982; V.F. Zaitzev leg.; ZIN . – North Western Province • 2 ♂♂, 1 ♀; Puttalam ; 8°02′ N, 79°50′ E; 1899; W. Horn leg.; MNHN • 1 ♂; Rajakadaluwa ; 7°39′ N, 79°50′ E; 22 Aug. 1953; F. Keiser leg.; NHMB . – Sabaragamuwa Province • 2 ♀♀; Sabaragamuwa, Ratnapura ; 6°45′ N, 80°30′ E; 20 Jan. 1970; Mussard, Besuchet, Lobl leg.; MCSN . – Southern Province • 3 ♀♀; Bentota ; 6°26′ N, 79°60′ E; 14 Aug. 1978; P. Cabella leg.; MCSN • 1 ♂; same locality data as for preceding; 16 Aug. 1978; P. Cabella leg.; MCSN • 1 ♀; same locality data as for preceding; 20 Aug. 1978; P. Cabella leg.; MCSN • 3 ♂♂, 5 ♀♀; same locality data as for preceding; 23 Mar. 1973; G. Zimmermann leg.; MNHB • 1 ♀; Matara ; 5°57′ N, 80°33′ E; 20 Oct. 1953; F. Keiser leg.; NHMB . – Western Province • 1 ♀; Colombo ; 6°56′ N, 79°51′ E; MNHN • 1 ♂; same locality data as for preceding; MHNG • 1 ♂; same locality data as for preceding; Feb. 1884; MNHB • 1 ♂, 1 ♀; same locality data as for preceding; Mar. 1953; MHNG • 3 ♂♂; Hendala ; 6°59′ N, 79°53′ E; 15 Aug. 1979; MNHN • 3 ♀♀; Kalutara ; 6°35′ N, 79°58′ E; Mar. 1986; W.U.E. Just leg.; NMPC • 2 ♂♂; Kalutara Distr., Tebuwana ; 6°35′ N, 80°03′ E; 13 Mar. 2000; S. Mahunka and L. Mahunka-Papp leg.; HNHM • 1 ♀; Mount Lavinia ; 6°50′ N, 79°52′ E; 5 Apr. 1973; G. Benick leg.; MNHB • 5 ♂♂, 4 ♀♀; Wadduwa ; 6°40′ N, 79°56′ E; V. De Poll leg.; MNHN. – Sri Lanka (no exact locality) • 9 ♂♂, 1 ♀; MNHN • 3 ♂♂, 2 ♀♀; IRSNB • 1 ♂; OUM • 1 ♂; NMPC • 2 ♂♂; ZIN • 4 ♂♂, 5 ♀♀; MNHB • 1 ♂, 1 ♀; MHNG • 1 ♀; Diener leg.; HNHM • 3 ♀♀; Friederichs S.G. leg.; MNHB • 2 ♀♀; S. Niethner leg.; MNHB • 1 ♂; Templeton leg.; OUM • 1 ♂; Walker leg.; BMNH • 2 ♂♂; Wollaston leg.; OUM • 11 ♂♂; 1871; Thwaites leg.; OUM • 2 ♂♂; 1873; Thwaites leg.; OUM • 5 ♂♂; 1889; H.Fruhstorfer leg.; MNHN • 1 ♂; Mar. 1889; H. Fruhstorfer leg.; MNHN .

Variation

Body length of the examined specimens varied from 8.0 to 10.5 mm (males) and from 7.0 to 9.0 mm (females). Head and pronotum armature in males varied from well-developed with long lateral pronotal processes and frontoclypeal horn ( Fig. 2A ) to excavated pronotum with gibbosities aside of the excavation and frontoclypeal tubercle ( Fig. 2C ), with intermediate variants ( Fig. 2B ).

Distribution

The species is distributed rather widely on Sri Lanka except for the eastern part ( Fig. 1H ).

Figures

Fig. 1. Orphnus mysoriensis Westwood, 1845. A–E, G. Lectotype, ♂ (OUM). F. Paralectotype, ♀ (OUM). A–B, F. Habitus in dorsal view. C. Labels. D. Aedeagus in lateral view. E. Parameres in dorsal view. G. Endophallus. H. Distributional record map. Scale bars: A–B, F = 1.0 mm; D–E, G = 0.5 mm.

Fig. 2. Orphnus mysoriensis Westwood, 1845. A–C. ♂ (NHMB). D. ♀ (NHMB). E–G. Lectotype of Orphnus detegens Walker, 1859, ♂ (BMNH). A–F. Habitus in dorsal view. G. Labels. Scale bars = 1.0 mm.

Fig. 3. Orphnus medvedevi sp. nov. A, D–G. Holotype, ♂ (ZIN). B–C. Paratypes, ♂ (ZIN). H. Paratype, ♀ (ZIN). A–C, H. Habitus in dorsal view. D. Parameres in dorsal view. E. Aedeagus in lateral view. F. Labels. G. Endophallus. I. Distributional record map. Scale bars: A–C, H = 1.0 mm; D–E, G = 0.5 mm.