Oides duodecimpunctata (Clark)

Lee, Chi-Feng & Beenen, Ron, 2017, Revision of the Palaearctic and Oriental species of the genus Oides Weber, 1801 (Coleoptera: Chrysomelidae: Galerucinae), Zootaxa 4346 (1) : 42-45

Oides duodecimpunctata (Clark)

( Figs 28A–28F , 29 )

Rhombopala [sic!] duodecimpunctata Clark, 1865: 143 ( Thailand) ;

Oides duodecimpunctata: Harold, 1876: 3555 (catalogue); Jacoby, 1883: 400 (diagnosis); Weise, 1924: 3 (catalogue); Wilcox, 1971: 8 (catalogue); Kimoto, 1989: 36 (catalogue); Reid, 1997: 37 ( Indonesia: Kalimantan); Mohamedsaid, 1999a: 134 ( Malaysia: Sabah); Mohamedsaid & Holloway, 1999: 167 (Borneo); Mohamedsaid, 2000b: 353 (catalogue); Mohamedsaid, 2004: 65 (catalogue); Mohamedsaid & Constant, 2007 ( Cambodia).

Oides niasensis Bowditch, 1925: 244 ( Indonesia: Nias island); Wilcox, 1971: 13 (catalogue). New synonymy

Types. Rhombopala duodecimpunctata . Holotype ♀ ( BMNH, by monotypy), labeled: “12 punctatum / (Chvr) Siam / D. Lethierry [h, y] // 12 punctata / Clark [h, b] // Oides / 12-punctata / Type Clark [h, w] // 67.56 [p, w] // Type [p, w] // Type [p, w, circle label with red border]”.

Oides niasensis . Lectotype ♀ (MCZC) here designated, labeled: “Lahago / Centraal Nias / 4II-10III 1896 / I. Z. Kannegieter [p, w] // Oides / niasensis / Type Bow [h, g] // Type [p] / 17532 [h, r]”. Depositories of other paralectotypes (3) are unknown to us.

Redescription. Length 10.9–13.5 mm, width 7.7–9.7 mm. General color ( Figs 28A–28C ) yellow; antennae yellow, antennomeres IX–XI dark brown; pronotum with one pair of black spots at sides; scutellum black; most areas of metasternum black; elytra with six pairs of black spots, arranged into three transverse rows: two pairs near base; two pairs at middle; and two near apex; abdominal ventrites I–IV with one pair of black spots at sides, spots on ventrite I largest, smaller apically. Antennae filiform in males ( Fig. 29A ), antennomeres IV longest, III–VII slightly serrate, VIII–X elongate, length ratios of antennomeres I–XI 1.0: 0.6: 1.1: 1.2: 1.1: 1.1: 1.0: 0.9: 0.8: 0.7: 0.9, length to width ratios of antennomeres I–XI 2.3: 1.7: 2.8: 3.5: 3.0: 2.9: 2.6: 2.4: 2.1: 2.1: 2.7; similar in females ( Fig. 29B ), length ratios of antennomeres I–XI 1.0: 0.5: 1.1: 1.2: 0.9: 0.8: 0.8: 0.8: 0.7: 0.6: 0.8, length to width ratios of antennomeres I–XI 2.9: 1.8: 3.8: 4.0: 2.8: 2.5: 2.1: 2.3: 2.0: 1.9: 2.4. Pronotum transverse, 2.2 wider than long, disc convex, without reticulate microsculpture but with dense, fine punctures; baso-lateral angles broadly rounded, apico-lateral angles rectangular; lateral margin rounded; apical margin moderately concave. Elytra oval, widest at middle, 1.2x longer than wide, disc with dense, coarse punctures; moderately convex, epipleurae near lateral margins, located 9/10 distance between suture and lateral margins. Penis ( Figs 29C–29E ) relatively wider, 7.3 longer than wide; parallel-sided; bifurcate at apical 1/5, apical processes directed mesally and apically; tectum small and apically tapering; slightly curved in lateral view, apices angular; ventral surface with deep and broad notch from apex to apical 2/5, apices angular; endophallic sclerite complex comprising one elongate sclerite at base, moderately curved in lateral view. Apical margin of abdominal ventrite V in female truncate and with a median notch. Gonocoxae ( Fig. 29F ) separated and longitudinal, apices narrowly rounded and with dense setae. Ventrite VIII ( Fig. 29G ) transverse, apical margin broadly rounded and slightly depressed at middle, with extremely dense setae; spiculum short. Receptacle of spermatheca ( Fig. 29H ) as wide as pump, connected to pump; pump strongly curved; proximal spermathecal duct with broad, sclerotized area at base; membranous areas slender.

Variations. Specimens from Java usually possess two elytral spots that are continuous medially and transverse. In some specimens all three spots are continuous and transverse ( Fig. 28D ). One specimen possesses reduced elytral spots ( Fig. 28E ). Specimens from East Malaysia possess smaller punctures on the elytra than typical, a prominent notch at the apical margin of abdominal ventrite V and a membranous spiculum of the ventrite VIII in females. Specimens from Nias island lack black spots on the pronotum, possess yellow scutellum and only one pair of black spots near the apex of the elytra, similar to those of O. decempunctata , which was described as O. niasensis ( Fig. 28F ).

Diagnosis. Adults of Oides duodecimpunctata are similar to those of O. coccinelloides , O. decempunctata , and O. maculosa in possessing small, black spots on the elytra arranged into three transverse rows. They differ from others in possessing one pair of lateral black spots on the pronotum (entirely yellowish brown pronotum in O. decempunctata ) and black scutellum (yellow scutellum in O. decempunctata and O. coccinelloides ), two pairs of black spots near apices of elytra (only one pair in O. decempunctata ; three pairs in O. maculosa ), and less convex elytra (epipleurae located at 9/10 distance between suture and lateral margins; strongly convex elytra in O. coccinelloides , epipleurae located at 3/5 between suture and lateral margins; moderately convex elytra in O. decempunctata , epipleurae located at 5/7 between suture and lateral margins). Some specimens possess reduced black spots on the pronotum and yellow scutellum. Moreover, specimens from populations on Nias Island possess a pattern of black spots similar to those of O. decempunctata . Aedeagi of male O. duodecimpunctata differs from others in possessing small and apically tapering tectum (lacking tectum in O. coccinelloides ; recurved tectum in O. decempunctata ; bifurcate and rounded tectum in O. maculosa ), deep and broad ventral notch (membranous apex in O. decempunctata ; deep and narrow ventral notch in O. coccinelloides ), and one elongate and parallel-sided endophallic sclerite (one large, hooked, erect sclerite in O. maculosa ; endophallic sclerites absent in O. decempunctata ; one small, hooked, erect endophallic sclerite in O. coccinelloides ).

Other specimens examined. BORNEO. 1♀ ( BMNH), Fry Coll., 1905.100.; 1♂, 1♀ ( RMNH), leg. C. & O. Vogt; 2♂♂ ( SDEI), leg. Wahnes; INDONESIA. Java: 1♂ ( BMNH), Bowring, 63.47*; 1♂ ( RMNH), Djampang Tengah, Soekaboemi, 18.I.1940, leg. J.M.A. van Groenendael; 1 ex. ( EUMJ), Mt. Gede, Cibodas, 27.XII.1977, leg. S. Nagai; 3 exs. ( RMNH), Kustgebied Wijnkoopsbaai, Pelaboean-Ratoe, 6.IX.1939, leg. J.M.A. van Groenendael; 1♀ ( RMNH), Nusa Kambangan, X.1916, leg. F. C. Drescher; 1♂, same but with “ V.1910 ”; 1♂ ( RMNH), same but with “ IV.1917 ”; 1♂, 1♀ ( RMNH), same but with “ I.1918 ”; 1♂ ( RMNH), same but with “ II.1918 ”; 1♀ ( RMNH), same but with “ IV.1918 ”; 2♂♂, 1♀ ( RMNH), same locality, V.1929; 1♀ ( RMNH), Preanger, 1899, leg. Regentschappen; 1♂ ( RMNH), same locality, leg. P. F. Sijthoff; Nias: 1♀ ( MNHUB), leg. J. Weise; Sumatra: 1 ex. ( NHMB), Aek Tarum, 2.VII.1978, leg. E. Diehl; 1♀ ( RMNH), Balimbingan, 600m, 1950, leg. R. Straatman; 1♀ ( RMNH), same locality, VI.1949, leg. C. van Nidek; 1♀ ( TCHU), Bandar Baru, 25.III.1996, K. Maruyama; 1♀ ( RMNH), Boekit Gabah, IV.1919, leg. H. Lucht; 1♂ ( MNHUB), Deli, leg. S. G. Martin; 1♀ ( MNHUB), same locality, 1894, leg. W. Reinsch; 1♂, Lebong Tandai, I.1923, leg. C. J. Brooks; 1♀ ( RMNH), Lubuk Sulasih, IX.1920, leg. E. Jacobson; 1♂ ( RMNH), Matur, X.1913, leg. E. Jacobson; 1♂ ( RMNH), Padang, leg. J. D. Pasteur; 1♀ ( RMNH), same locality; 1 ex. ( MNHUB), 14 km N Parpate, 1100m, 12–20.VI.1982, leg. Diehl; 1 ex. ( NMPC), Payakumbuh, Mt. Harau, 1000m, 5–10.II.1991, leg. S. Jakl; 1♂ ( TCHU), Silalahi, 4.V.1999, leg. S. Tsuyuki; 1♀ ( TCHU), Silalahi, Toba lake, 1800m, 29.IV.1998, leg. H. Takizawa; 1♀ ( RMNH), Solok, leg. P. O. Stolz; 1♀ ( TCHU), Urung Tama, Sibolangit, 27–30.X.1999, leg. H. Takizawa; 1♀ ( BMNH), leg. W. Morton, Jacoby Coll., 1909–28 a.; 1♀ ( SDEI), Wai Lima Z. Sum, Lampongs, No. 17, XI.–XII.1921, leg. Karny & Siebers; 1♂ ( BMNH), leg. Wallace, Baly Coll.; East MALAYSIA. Sabah: 3 exs. ( NHMB), Benon Mts.; 15km E Kampong Dong, 03°35’N 102°01’E, 700m, 1.IV.1998, leg. Dembický & Pacholátko; 1 ex. ( BMNH), Crocker Range, Kota Kinabalu→Tambunan, 1240m, 5°51’33.7”N 116°17’24.1”E, IV.2013, leg. M.V.L. Barclay et al.; 1♂ ( TCHU), Crocker R. Park, 6.IV.2016, leg. H. Takizawa; 1♀ ( EUMJ), same locality, 26–27.XI.1981, leg. S. Nagai; 1 ex. ( RBCN), Crocker Mt., 500– 900 m., Gunung Emas, 6–21.V.1995, leg. Jiří Stolarczyk; 1 ex. ( UACB), same locality, 27–31.V.2001, leg Jiří Stolarczyk; 1♀ ( TCHU), Himban, nr. Bundu Tuhan, Ranau, 15.VII.2009, leg. A. Abe; 1♀ ( TCHU), Kg. Sinarut Baru Ranau, 16.IV.2013, leg. H. Takizawa; 1♀ ( SDEI), Kinabalu, col.Kraatz; 1 ex. ( RMNH), Mount Trus Madi, 1400 m, 23–28.X.2001, leg. M. Schilthuizen; Sarawak: 1♀ ( BMNH), Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8, leg. J. D. Holloway et al., B.M. 1978-206; 2♂♂ ( TCHU), Kuching, 12–21.VI.1988, leg. Y. Nishiyama; 2♀♀ ( TCHU), Kuching, Mt. Serapi, 26–28.VIII.1989, leg. Y. Nishiyama; 1♀ ( TCHU), same but with “ 8.V.1990 ”; West MALAYSIA. Pahang: 1♂ ( BMNH), Cameron Highlands, Tanah Rata, 4800 f, 20.I.1924, leg. M. A. Henderson; 1 ex. ( UACB), same locality, 7–9.I.1999, leg Cechovsky; Perak: 1♀ ( NMW), Kwala-Kangsar, 1902, leg. Grubauer; THAILAND. Kao Poh Ta: 1 ex. ( MLCL), Khao Poata, 4.IV.1997.

Distribution. Cambodia, Indonesia, Malaysia, Thailand ( Fig. 25 ).

Figures

FIGURE 25. Distribution map of Oides decempunctata (red dots), O. duodecimpunctata (blue dots) and O. maculosa (yellow dots).

FIGURE 28. Habitus of Oides duodecimpuctata (Clark) and O. maculosa Gahan. 28A. O. dimidiaticornis dorsal view; 28B. Same, ventral view; 28C. Same, lateral view; 28D. Color variation, dorsal view; 18E. Color variation, dorsal view; 28F. Color variation (O. niasensis), dorsal view; 28G.O. maculosa, dorsal view; 28H. Same, ventral view; 28I. Same, lateral view.

FIGURE 29. Diagnostic characters of Oides duodecimpunctata (Clark). 29A. Antenna, male; 29B. Antenna, female; 29C. Penis, dorsal view; 29D. Penis, lateral view; 29E. Penis, ventral view; 29F. Gonocoxae; 29G. Abdominal ventrite VIII; 29H. Spermatheca.