Monolepta signata ( Olivier, 1808 )

Hazmi, Izfa Riza & Wagner, Thomas, 2022, Revision of Monolepta Chevrolat, 1836 from the Sundaland area (Coleoptera: Chrysomelidae: Galerucinae), Bonn zoological Bulletin 71 (2), pp. 139-176 : 146-150

Monolepta signata ( Olivier, 1808)

Figs 10–15

Galeruca signata Olivier, 1808: 665 ( Jacoby 1889: 229) .

= Crioceris neglecta Sahlberg, 1823: 72 ; repated in 1829: 29 (syn. by Maulik 1936: 410).

= Luperodes hieroglyphicus Motschulsky, 1858: 104 (syn. by Wagner & Bieneck 2012: 210).

= Luperodes quadripustulatus Motschulsky, 1858: 105 (syn. by Maulik 1936: 410).

= Monolepta elegantula Boheman, 1859: 183 (syn. by Weise 1913: 229).

= Luperodes dorsalis Motschulsky, 1866: 415 (syn. by Wagner & Bieneck 2012: 210).

= Luperodes quadriguttata Fairmaire, 1887: 333 (syn. by Weise 1924: 169).

= Monolepta picturata Jacoby, 1896: 292 ; syn. nov.

= Monolepta simplex Weise, 1913: 229 (syn. by Weise 1924: 168).

Type material. Galeruca signata . Type material is not available to us.

Crioceris neglecta . Syntype: ”Ind. Or. / neglecta Sahlberg n.sp. guttata Gyll:” At least on syntype is available in NHRS .

Luperodes hieroglyphicus . Lectotype: ♂, “ Luperodes hieroglyphicus Motsch., Ind. Or ” ( ZISP; Fig. 10 ) . Paralectotypes, 5 ex. same data as lectotype ( ZISP). All six syntypes were originally glued tightly together on one card. The lectotype and one female paralectotype have been remounted, the other four paralectotypes are left on the original card ( Wagner & Bieneck 2012: 210).

Luperodes quadripustulatus . Lectotype: ♂, “ Luperodes 4pustulatus Motsch., Ind. Or” (ZISP; Fig. 11 ). Paralectotypes, 2 ex. same data as lectotype (ZISP). These two paralectotypes have been originally glued together with the choosen lectotype on the original card ( Wagner & Bieneck 2012: 210). A further type, not stated as paralectotype in Wagner & Bieneck (2012) is in NHRS.

Monolepta elegantula . Syntype: ” Malacca / Kinb. / type / elegantula Bhm. ” At least on syntype is available in NHRS. There is one specimen labelled ”Co-type” in BMNH, invalid type from Nias Island near Sumatra, while the species is only described from ” Malacca ” .

Luperodes dorsalis . Holotype: ♂, ” Luperodes dosalis Motsch. Ceylon ” ( ZISP; Fig. 12 ) ( Wagner & Bieneck 2012: 210).

Luperodes quadriguttata . Type material is not available to us. We adopt Weise′ s (1924) statement that this species is a junior synonym of M. signata ( Olivier, 1808) .

Monolepta picturata . Lectotype: “ M. picturata Jacoby 1896 / Type / Toungoo India / Monolepta picturata Jac. / Jacoby Coll. 1909-28a” ( BMNH; Fig. 13 ) . – Paralectotype: 1 ex., same data as lectotype ( BMNH). Type locality: 18º56′ N / 96º25′ E. Jacoby gave no details on speci- men number and there are two specimens in his collecion in BMNH available. We herein designate a lectotype here to fix the name on a single specimen. Jacoby was aware about the similarity to M. signata ”A plainly marked species, resembling somewhat in colouration M. signata Oliv. , but easily distiguished by the number, position and shape of the elytral pale spots”. To that time, colouration was an important diagnostic character .

Monolepta simplex . Syntype: 1 ex. ” P. Princesa Palawan Baker / simplex m.” ( NHRS) .

Further materials examined. – Bangladesh. 1 ex., Dacca, 23°42′ N / 90°22′ E, 7.IX.1945, D. Leston, B.M. 1945-86 ( BMNH) . – Cambodia. 1 ex., Peal-Leap , 11°42′ N / 103°02′ E, V.1950 ( BMNH) . – China. 3 ex., China ( BMNH) ; 2 ex., Fukien ( MNHU) ; 3 ex., Chusan Is. , 30°10′ N / 122°24′ E, J. J. Walker ( BMNH) ; 4 ex., Kanton , 23.4°N / 113.5°E, 1.–30.X.1916, H. Weigold ( MNHU) ; 1 ex., Yunnan, 25°02′ N / 102°42′ E, 1. VIII.1922. Prof J. W. Gregory ( BMNH) ; 2 ex., SW. China , Yunnan, 4. VIII.1922, Prof. J.W. Gregory ( BMNH) ; 2 ex., Anoy , 35°51′ N / 104°11′ E, 1923, S. F. Light ( BMNH) ; 3 ex., China-Yunnan, Lijian env., 25°02′ N / 102°42′ E, 10. VIII.1995, J. Scheider ( CJB) ; 10 ex., Yunnan, Menghai , 21º58′ N / 100º28′ E, 6.–10. III.1999, River, P. Grootaert ( IRSN) . – Hong Kong. 5 ex., Hong Kong , 22º22′ N / 113º56′ E, Walker Coll. ( BMNH) ; 1 ex., Hong Kong , 22°23′ N / 114°6′ E, Stimp- son ( RMNH) ; 2 ex., Hong Kong, Tai Lung Farm , IX.– XI.1965, I. W. B. Thornton ( BMNH) ; 1 ex., Hong Kong , 22°23′ N / 114°6′ E ( BMNH) . – India. 32 ex., C. Almora, Ranikhet, Kumaon, W. Almora , 29°35′ N / 79°39′ E, 5.– 8.16, H. G. C. ( BMNH) ; 14 ex., U. Gumti Val., W. Almora Dn. 29°35′ N / 79°39′ E, VIII.1917, IV.1919, H. G. C. Champion Coll. ( BMNH) ; 9 ex., Assam, Sudiya, Doherty , 27°50′ N / 95°40′ E, Fry Coll. ( BMNH) ; 4 ex., Assam, Pat- kai Mt. , 21°05′ N / 91°13′ E, Doherty ( BMNH) ; 2 ex., Malabar , 10°15′ N / 75°14′ E, Doherty, Fry Coll. ( BMNH) ; 14 ex., India , Baly Coll. ( BMNH) ; 1 ex., Nilgiri Hills , 11°25′ N / 76°30′ E, T. V. Champbell ( BMNH) ; 6 ex., Haldwani Div., Kumaon , 29°13′ N / 79°31′ E, H. G. C. ( BMNH) ; 2 ex., Dahra Dun , 30°18′ N / 78°2′ E ( BMNH) ; 14 ex., Nilgiri Hills , 11.35°N / 76.42°E, H. E. Andrewes ( BMNH) ; 2 ex., Sikkim, Gopaldhara, Rungbong Vall., H. Steven ( BMNH) ; 2 ex., Travancore, Wallardi , 37°N / 144.89°E, Collection J. Achard ( BMNH) ; 1 ex., Taplejung District, Sengu 27°21′ N / 87°40′ E, c 6200′ ( BMNH) ; 1 ex., Assam, 26°12′ N / 92°56′ E, Doherty ( BMNH) ; 1 ex., Deli, 3°35′ N / 98°39′ E, S. V. L ( RMNH) ; 1 ex., Punjab , Kangra Vall., 1903-37 ( BMNH) ; 1 ex., Himalaya, Chaubattia, Almora District , 6-7000 ft., 1920, 29°35′ N / 79°39′ E, S. R. Archer ( BMNH) ; 3 ex., Belgaum , 15°50′ N / 74°34′ E, Andrewes Bequest, B.M. 1922-221 ( BMNH) ; 1 ex., Punjab, Simla , 31°6′ N / 77°10′ E, E. C. Ansorgee ( BMNH) ; 7 ex., Bengal , Sarda, F.W.C. ( BMNH) ; 3 ex., Bengal, Mandar , 21º41′ N / 87º33′ E, VII.1891, P. Cardon, Coll. Duvivier ( IRSN) ; 1 ex., Bhowali, Nr. Naini Tal , 4500 ft., 29°22′ N / 79°31′ E, 21.X.1934 ( BMNH) ; 4 ex., Assam, Mishmi Hills, Delai Valley, Taphlogam , 28°14′ N / 95°59′ E, 7.XI.1936 ( BMNH) ; 4 ex., Coimbatore , 11º1′ N / 76º58′ E, VII.1950, P. Susai Nathan ( IRSN) ; 13 ex., Nilgiri Hills, Cherangode , 3500 ft., 11º25′ N / 76º30′ E, X.1950, P. Susai Na- than ( IRSN) ; 21 ex., Annamalai Hills Cinchona , 10º02′ N / 77º07′ E, 3500ft, V.1952, IV.1964, V.1968, P. Susai Nathan ( RMNH) ; 45 ex., S. Coorg Ammanit, 3100 ft, 12º25′ N / 75º44′ E, XI.1950 – II.1952, P. Susai Nathan ( IRSN) ; 24 ex., Kodaikanal Pulney Hills , 6500 ft, 10º12′ N / 77º30′ E, V.1953, P. S. Nathan ( IRSN) ; 1 ex., Bengal , 21°56′ N / 88°51′ E, Sunderbans, F.W.C, H.G. Champion Coll. B.M. 1953-156 ( BMNH) ; 2 ex., Arunachal Pr. 8 km S Jamiri, Sessa vicinity, 28°14′ N / 94°4′ E, 26. V.–4. VI.2005, L. Dembicky ( BMNH) . – Indonesia. 1 ex., Java, Tengger , 6º58′ S / 111º17′ E, 4000, Coll. Duvivier ( IRSN) ; 1 ex., Sumatra, Mjoberg, Kota Tajne ( NHRS) ; 5 ex., Sumatra, Mjoberg, Brastagi , 1º17′ S / 102º40′ E ( NHRS) ; 6 ex., Sumatra, Mjoberg, Medan , 3º35′ N /98ºE ( NHRS) ; 2 ex., Sumatra, Mjoberg, Tjinta Radja ( NHRS) ; 1 ex., Sumatra, Mjoberg, Perdagangan ( NHRS) ; 1 ex., Java, 7º36′ S / 110º42′ E ( NHRS) ; 5 ex., Java, K. R.H. ( RMNH) ; 1 ex., W. Java ( RMNH) ; 4 ex., Java, Batavia , 6°12′ S / 106°50′ E, Sythoff ( RMNH) ; 2 ex., Bandar Baroe , Sumatra, 5°15′ N / 96°04′ E, J.J.d. V ( RMNH) ; 1 ex., Java, Preange, Tjigembong , 6°42′ S / 110°56′ E, J. B. Corporaal ( RMNH) ; 15 ex., N.O. Suma- tra, Tandjong Morawa Serdang , 0°35′ S / 101°18′ E, Dr. B. Hadgen ( RMNH) ; 40 ex., Nias , 1°07′ N / 97°31′ E, J. D. Pasteur ( RMNH) ; 1 ex., Java, Kraksakun ( RMNH) ; 14 ex., Java, Ardja-Sari, Preanger , 7°03′ S / 107°38′ E, P. F. Sitjhorf ( RMNH) ; 1 ex., Java, G. Oengaran, 7°11′ S / 110°20′ E, v. Doesberg ( RMNH) ; 1 ex., Kediri , 7°49′ S / 112°0′ E, Java de Vos ( RMNH) ; 1 ex., Java, Ameyer ( RMNH) ; 1 ex., Sumatra, Brastagi , 3º22′ N / 98º34′ E, Mjoberg ( NHRS) ; 1 ex., Java Orient, Montes Tengger , 4000 ft, 1890, H. Fruhstrofer ( RMNH) ; 1 ex., Sumatra, Siboga , 1°44′ N / 98°46′ E, X.1890 – III.1891, E. Modiglianii ( BMNH) ; 3 ex., Sumatra, Pagherang Pisang , X.1890 – III.1891, E. Modiglianii ( BMNH) ; 31 ex., Sumatra, Manna , 4°30′ S / 102°58′ E, 1902, M. Knappert; Museum Leiden, ex. Collection J.J. de Vos tot Nederveen Cappel ( RMNH) ; 1 ex., Sumatra, Nias , 1°07′ N / 97°31′ E, Fry Coll. ( BMNH) ; 11 ex., Nias Island, Schreiber , 1°07′ N / 97°31′ E, Sharp Coll. ( BMNH) ; 1 ex., Slawi Tegal , Java, 6°59′ S / 109°08′ E, 1909, Valck Lucas- sen ( RMNH) ; 1 ex., Sumatra, Soekaranda, Dohrn, Jacoby Coll. ( BMNH) ; 3 ex., Java, Nongkodjadjar , 7°38′ S / 112°54′ E, Jan. 1911, E. Jacobson ( RMNH) ; 1 ex., Java, Mount Salak , 7º46′ S / 112º56′ E, 400 m, 1921, L. G. E. Kalshoven ( IRSN) ; 3 ex., Java, Kerkhoven, 1921, Panoembang, ardayasari ( RMNH) ; 1 ex., Java, 24. XII.1925 ( IRSN) ; 1 ex., Central Java, 7°09′ S / 110°08′ E, 4. III.1927, 2093 m, Rensch ( MNHU) ; 3 ex., C. Java, Kedae Pagar, Saemang , 800 m, 2. III.1932, D. V. L ( RMNH) ; 1 ex., Java, Lembang , 6°49′ S / 107°37′ E, V.1933, v. Doesburg ( RMNH) ; 1 ex., Tangk-Prahoe , 6. VI.1933, P. H. V. Doesburg ( RMNH) ; 1 ex., Java, G. Kawi, 7°55′ S / 112°27′ E, VII.1934, v. Doesberg ( RMNH) ; 1 ex., Bremi, Probulingga , 7°58′ S / 113°29′ E, 1000 m, XI.1934, W. C. v. Heu- ton, ex. Collection, S. J. van Ooststroom, rec. 1982 ( RMNH) ; 1 ex., 23. VII.1938, H. M. Pendlebury ( BMNH) ; 1 ex., G. Gede, Pontiek , 6°46′ S / 106°56′ E 1485 m, 2. V.1948, Dr. L. Kalshoven ( RMNH) ; 6 ex., W. Java, Tjibadas , 7.19°N / 107.36°E, V.1950, v. Ooststroom, S. J. van Ooststroom, rec. 1982 ( RMNH) ; 2 ex., West Java, Puntjak , 6°39′ S / 106°56′ E, 1400 m, 27.IX.1953, J. v. der Vocht (RMNH) ; 1 ex., N. Sumatra, Susuk , 3°09′ N / 98°21′ E, 29. V.1994, Muruyama ( CTJ) ; 1 ex., Java Central, Bandar , 7°09′ S / 110°08′ E, 550 m, at light, 20.I.1998, R. Cervenka ( CJB) ; 1 ex., N. Sumatra, Silalahi alt. 1600 m, nr D. Toba , 2°19′ N / 98°43′ E, 2. V.1998, Muruyama ( CTJ) . – Malaysia. 4 ex., Malacca, 2º19′ N / 102º20′ E, Coll. Duvivier, Coll. Chapuis ( IRSN) ; 1 ex., Kuala Lumpur, 3°08′ N / 101°41′ E ( BMNH) ; 1 ex., Bengal Occ. Betana , 1890, Coll. Duvivier ( IRSN) ; 1 ex., Sarawak, Bidi , 2°33′ N / 113°01′ E, 28.I.1909, C. J. Brooks ( BMNH) ; 1 ex., Malay Penin., Selangor F. M. S., Gombak Valley , 3°17′ N / 101°38′ E, 17.X.1921, H. M. Pendlebury ( BMNH) ; 2 ex., Pahang, F. M. S. Kuala Tah- an, 4°22′ N / 102°24′ E, 19.XI.1922, H. M. Pendlebury ( BMNH) ; 1 ex., South China Sea, Pulau Tioman, Sedagong , 900′, 2°47′ N / 104°10′ E, V.1927, N. Smedly ( BMNH) ; 1 ex., Malay Penin. , Kedah Perak, 5°53′ N / 100°31′ E, 23. III.1928 ( BMNH) ; 1 ex., Perak, F. M. S. Larut Hills, 4500 ft., 4°47′ N / 100°45′ E, 20.II.1932, H. M. Pendlebury ( BMNH) ; 1 ex., Malay Penin., Pahang, Fraser′ s Hill , 3°46′ N / 101°45′ E, 25.X.1933, Pine trees ( BMNH) ; 3 ex., Pahang, F. M. S. Cameron Highlands , 4800 ft., 4°29′ N / 101°23′ E, 22. VI.1935 ( BMNH) ; 1 ex., Tapah , 4°12′ N / 101°15′ E, 27.II.1974, Y. Kiyoya- ma ( BMNH) ; 1 ex., Cameron Highlands , 4°29′ N / 101°23′ E, 6.I.1982 ( BMNH) ; 1 ex., Pulau Tioman , 2º47′ N / 104º10′ E, Tekek, 24. III.1987, T. E. Leiler ( NHRS) ; 1 ex., N. Borneo Exp., Sabah, Interior zone, 5.1°N / 115.59°E, 16 km of Tenom Agric. Res. Station along Sg. Pegalan , 5.1°N / 115.59°E, 200, 23.XI.1987, J. Huisman & R. de Jong ( RMNH) ; 1 ex., Malaysia, Fraser Hill , 3º46′ N / 101º45′ E, 21.II.1991, RM exped. ( NHRS) ; 2 ex., Perak, Banding , 4°47′ N / 101°11′ E, 2.XI.1991, Is- mail et al. ( UKM) ; 1 ex., Kedah, Langkawi, Lubuk Semilang , 6°21′ N / 99°47′ E, 8.–10. XII.1992, Zabidi et al. ( UKM) ; 3 ex., Perak, Pangkalan Hulu , 5°42′ N / 100°59′ E, XI.1991 – II.1993, Ismail et al. ( UKM) ; Pah- ang, Tasik Bera, Pos Iskandar , 3°07′ N / 102°36′ E, 4.– 8. V.1993, Sham et al. ( UKM) ; 1 ex., Pahang, Pulau Tioman , 2°47′ N / 104°10′ E, 18.–21.IX.1999, Ismail & Sham ( UKM) ; 1 ex., W-Perak, Bamjaran Titi Wangsa Mts. , 5°58′ N / 101°20′ E, 1200 m, V.2001, P. Cechovsky ( NME) ; 19 ex., W-Kelantan, Gunung Basor , 5°30′ N / 101°45′ E, 1700 m, V.2016, P. Cechovsky ( NME) . – Myanmar. 3 ex., Tenasserim, Javoy, Fry Coll. ( BMNH) ; 1 ex., U. Burma, Kyauktau , 20°51′ N / 92°58′ E, Sehwebo Dn. HGC ( BMNH) ; 1 ex., Birmania, Shwego Myo , X.1885, Fea ( IRSN) ; 1 ex., Carin, Cheba , 19º13′ N / 96º35′ E, I.1888, I. Fea ( IRSN) ; 1 ex., Tharrawaddy, Burma , 17°39′ N / 95°48′ E, 1902.294 ( BMNH) ; 1 ex., Burma, Toungoo , 18°56′ N / 96°25′ E, 1902.294 ( BMNH) ; 1 ex., Burmah , 21°54′ N / 95°57′ E, Andrewes Bequest ( BMNH) ; 1 ex., Upper Burma, Seingkhu Valley , 28.5ºN / 97.35ºE, 1926, P. Kingdon Ward ( BMNH) ; 1 ex., Upper Burma, Mali Kha Valley , 1926, P. Kingdon Ward ( BMNH) ; 4 ex., Tenasserim, Malvedaung , 30 m S. of YE, 15.–25.XI.1934 ( BMNH) ; 6 ex., Burma, Mishmi Hills , 28°14′ N / 95°59′ E, 1935, M. Steele ( BMNH) ; 1 ex., Upper Burma, Hkamti Long , IV.– V.1935 ( BMNH) ; 6 ex., Upper Burma, Nam Tai Valley , 27º42′ N / 97º54′ E, 2. VIII.1938, R. Kaulback ( BMNH) . – Nepal. 1 ex., British-Nepal Exped., 1950 ( BMNH) ; 1 ex., West Nepal, Silgarhi-Doti, Kali Gad , 29°16′ N / 80°59′ E, 26. VII.1953, J. B. Tyson ( BMNH) ; 1 ex., Rimi , 29°07′ N / 82°34′ E, 1000 ft., 28.IX.1952 ( BMNH) ; 1 ex., Pokhara , 3000 ft., 28°15′ N / 83°58′ E, 12.IV.1954, J. Quinlan ( BMNH) ; 1 ex., Pokhara, Basunghara Parc , 800 m, 28°12′ N / 83°50′ E, IX.2014, F. Creutzberg ( NME) . – Philippines. 1 ex., Palawan, P. Princess, 9º26′ N / 118º22′ E, Baker ( NHRS) ; 4 ex., Lu- zon, 16º′ N/121º′ E, 38765 ( MNHU) . – Singapore. 4 ex., Singapore , 1°21′ N / 103°49′ E, C.J. Saunders ( BMNH) . – Sri Lanka. 3 ex., Ceylon ( MNHU) , 4 ex., Colombo on Coast level, 6°56′ N / 79°50′ E, 7.–27.IV.1882, G. Lewis ( BMNH) ; 1 ex., Kandy , 7°17′ N / 80°38′ E, 1546-1727 ft., 17.–23.II.1882, G. Lewis ( BMNH) ; 1 ex., Halupahani, Haldummulle , 6.76°N / 80.88°E, 1904 ( BMNH) ; 3 ex., Ceylon , T. B. Fletcher, 1909 ( BMNH) ; 3 ex., Ceylon, A. Rutherford, 1914, T. B. Fletcher ( BMNH) ; 4 ex., Hambantona , 6°07′ N / 81°07′ E, IX.1890, H. P Green ( BMNH) ; 1 ex., Ceylon, Kalawewa , 8°01′ N / 80°33′ E, 14.II.1953 ( BMNH) ; 1 ex., Dickoya 20 km WSW, Nuwara Eliya , 6°52′ N / 80°36′ E, 28. III.1973, G. Benick ( MNHU) ; 2 ex., Sri Lanka NWP Kur. D Pannala, 2. II.1974, P. I. Perrson ( NHRS) ; 1 ex., Kitulgalle , 6°59′ N / 80°25′ E, 1700 ft., 17.–20.I.1982 ( BMNH) ; 1 ex., S. Sri Lanka near Tissamaharama , 90 km near NE of Matara, 6°17′ N / 81°17′ E, 14. III.1994, Z. Kajval ( CJB) . – Thailand. 4 ex., Siam, Renong, Doherty ( BMNH) ; 1 ex., C. Siam, 150 m, Kwae Nov River. Exp. Niki , 14º19′ N / 98º57′ E, 23.IV.–5. V.1946, J. K. Jonkers ( RMNH) ; 2 ex., Thailand, 25 km NM v. Lan-Sak , 15º27′ N / 99º34′ E, IX.1990 ( MNHU) ; 2 ex., N. Thailand, Mae Hong San env. Ban Huai Po , 18º44′ N / 97º52′ E, 1700 m, 24.–30. VI.1993, J. Schneider ( CJB) ; 3 ex., Loei Chiang Khan , 17º50′ N / 101º45′ E, 11.II.1999, P. Groot- aert ( IRSN) ; 2 ex., Pattaya , 12°53′ N / 100°53′ E, III.2016, R. Mazrozis ( NME) . – Vietnam. 5 ex., Coll. Duvivier; Coll. Chapuis ( IRSN) ; 5 ex., Barway , Cardon, Coll. Duvivier ( IRSN) ; 2 ex., Berhampur ( BMNH) ; 1 ex., Dalaen-saen nr Nong-po , Walker Coll. 93-18 ( BMNH) ; 1 ex., Jad. Bov , Coll. Veth ( RMNH) ; 1 ex., Annam , Phuc- Son, Nov – Dez, H. Fruhstorfer ( RMNH) ; 2 ex., Central Tonkin Chiern-Hoa , Aug. Sept., H. Frühstorfer ( RMNH) ; 2 ex., Haut-Tonkin, Madon, Riviere Claire , 19º45′ N / 107º45′ E ( IRSN) ; 1 ex., Tonkin , 19º45′ N / 107º45′ E, Coll. Mandon ( IRSN) ; 2 ex., Hanoi, 21º1′ N / 105º51′ E ( IRSN) ; 1 ex., Saigonh ( IRSN) ;); 4 ex., Soereol, 7.1878 ( RMNH) ; 6 ex., Hanoi, 1903, Coll. Veth ( RMNH) ; 8 ex., Tonkin , Hoa Binh, Hanoi, II.– VI.1917; VIII.1918, R. V. de Slavaza ( BMNH) ; 1 ex., Tonkin, Bao Ha , X.– XII.1923, H. Stevens ( BMNH) ; 3 ex., Tonkin, Thai-Nien Basin of Fleuve Rouge , 1924, H. Stevens ( BMNH) ; 1 ex., Vietnam, Prov. Lao-Cai , 22º20′ N /104ºE, 1900 m, 26.IX.1963, Mai ( MNHU) ; 1 ex., Vietnam N., Huong Son Prov. Ha Son Bin, 21º27′ N / 105º59′ E, 26.– 29.IV.1991, J. Strand ( CJB) ; 2 ex., Cao Bang Prov., Pia Oac NR, 22°38′ N / 105°53′ E, V.2014, A. Weigel ( NME) .

Redescription

Total length. 3.50–5.25 mm (mean 4.47 mm; n = 10).

Head. Very finely punctuated, pale brown, red- dish-brown or red. Labrum dark brown and mandible partly black. Antenna slender and extending to the middle of the elytra, dark brown to black ( Fig. 14 Aa), usually only three basal antennomeres pale yellow or reddish ( Figs 10b–13b , 14 Ab). Second antennomere usually schorter than third; ratio length of second to third antennomere 0.67–1.00 (mean 0.77); ratio length of third to fourth antennomere 0.38–0.50 (mean 0.45; Fig. 14B ).

Thorax. Pronotum finely punctuated, pale yellow to brown-reddish. Pronotal width 1.15–1.55 mm (mean 1.35 mm), ratio length to width: 0.60–0.63 (mean 0.61). Scutellum brown to black, meso- and metathorax black. Elytron brown to black, varied on number of yellow spots, from usually one beyond humerus up to three. Elytral length 2.90–3.60 mm (mean 3.32 mm), maximal width of both elytra together 2.00– 2.80 mm (mean 2.40 mm), ratio of maximal width of both elytra together to length of elytron 0.72–0.75 (mean 0.73). Coxae pale yellow to brown, base of femur yellow, outer parts black, also apical part of tibiae and all tarsi brown to black ( Figs 10b–13b ).

Abdomen. Pale yellow to brown.

Male genitalia. Median lobe parallel-sided, becomes narrow towards apex. Median spiculae consist of a group of long and slender structures, apical median spiculae slightly curved. Lateral spiculae c-shaped, Ventral spiculae not visible from dorsal view, short, slightly curved and slender ( Fig. 14 Cb).

Female genitalia. Spermatheca with spherical nodulus, cornu long and curved ( Fig. 14D ). Dorsal part of bursa sclerite with saw-like spines, ventral part longer, slender, with fine spines ( Fig. 14E ).

Diagnosis. This species shows a high variety in colouration pattern. Characteristic are the brownish to black elytron with circular humeral and praeapical yellow spots ( Figs 10b–13b , 14A ). Monolepta zonula , M. empatbulat sp. nov. and some specimens of M. mohamedsaidi sp. nov. resemble this species in terms of colouration, particularly regarding the yellowish spot on elytron, but all three have a black head, while head in M. signata is always pale brown, reddish to yellowish. Total length of M. signata varied from 3.50–5.25 mm, quite similar to M. zonula (3.50–4.90 mm) while M. empatbulat sp. nov. (3.25–3.80 mm) and M. mohamedsaidi sp. nov. (3.25– 4.00 mm) are on average smaller. The genitalic characters are quite different among these four species, and specimens can be clearly differentiated by a check of the male genitalia ( Figs 14C , 25C , 47C , 56C ).

Distribution. Probably the most abundant species of Monolepta in the Oriental Region from Pakistan (literature data) and southern China to Java and Bali, but not known from Wallacea ( Fig. 15 ).

Figures

Figs 10–13. Type material of Monolepta signata (Olivier, 1808). 10. Luperodes hieroglyphicus Motschulsky, 1858, lectotype, ♂ (ZISP). 11. Luperodes quadripustulatus Motschulsky, 1858, lectotype, ♂ (ZISP). 12. Luperodes dorsalis Motschulsky, 1866, holotype, ♂ (ZISP). 13. Monolepta picturata Jacoby, 1896, lectotype (BMNH).

Fig. 14. Monolepta signata (Olivier, 1808). A. Colour pattern. B. Basal antennomeres. C. Median lobe, a. dorsal, b. lateral, c. ventral, without endophallic structures. D. Spermathecae. E. Bursa-sclerites, a. dorsal, b. ventral.

Fig. 15. Distribution of Monolepta signata (Olivier, 1808).

Fig. 25. Monolepta zonula Weise, 1916. A. Colour pattern. B. Basal antennomeres. C. Median lobe, a. dorsal, b. lateral, c. ventral, without endophallic structures. D. Spermathecae. E. Bursa-sclerites, a. dorsal, b. ventral.

Fig. 47. Monolepta empatbulat sp. nov. A. Colour pattern. B. Basal antennomeres. C. Median lobe, a. dorsal, b. lateral, c. ventral, without endophallic structures. D. Spermathecae. E. Bursa-sclerites, a. dorsal, b. ventral.

Fig. 56. Monolepta mohamedsaidi sp. nov. A. Colour pattern. B. Basal antennomeres. C. Median lobe, a. dorsal, b. lateral, c. ventral, without endophallic structures. D. Spermathecae. E.Bursa-sclerites, a. dorsal, b. ventral.