Orthoneolepta banggiensis ( Mohamedsaid, 1997 ) Hazmi & Wagner, 2013

Hazmi, Izfa Riza & Wagner, Thomas, 2013, Revision Of Neolepta Jacoby, 1884 And Related Galerucines From The Oriental Region, Including Descriptions Of Two New Genera (Coleoptera: Chrysomelidae: Galerucinae), Raffles Bulletin of Zoology 61 (1), pp. 73-95 : 93-94

Orthoneolepta banggiensis ( Mohamedsaid, 1997) , new combination

( Figs. 45–50 )

Neolepta banggiensis Mohamedsaid, 1997: 198

Type material. — Holotype, “ Holotype Neolepta banggiensis n. sp. des Mohamedsaid 1997 / Sabah: Pulau Banggi, 8–12 May 1996, Salleh, Zaidi, Ismail & Sham” ( UKM). – 5 Paratypes, same data as holotype ( UKM; Fig. 50 ). Type locality: Malaysia, Sabah, 7°16'N / 117°09'E.

Further material examined. — Malaysia. 2 ex., Sabah, Lembah Danum , 5°08'N / 117°24'E, 3–5 Dec.1991, 17–20. Nov.1994, Ismail, Sham & Ruslan ( UKM) ; 3 ex., Sabah, Pulau Gaya , 6°01'N / 116°01'E, 26–30 Nov.1991, Zaidi & S. Abin ( UKM) ; 28 ex., N. Borneo, Kudat , 6°49'N / 116°43'E, 2–27 Aug.1927, 1–18 Sep.1927, Ex. F. M. S. Museum, B. M. 1955–354 ( BMNH) ; 1 ex., Sabah, 5 m, S. Mt. Trus Madi , 1800 ft, 5°33’N / 116°30’E, 18–28 Aug.1977, M. E. Bacchus, B. M. 1978–48 ( BMNH) ; 6 ex., Borneo ( BMNH) ; 3 ex., Sarawak, 2°33'N / 113°E, C. J. Brooks, B. M. 1928–193 ( BMNH) ; 1 ex., Lundu, West Sarawak, 1°40'N / 109°48'E, Jan.1914, G. E. Bryant ( BMNH) ; 3 ex., Borneo, Sandakan , 5°50'N / 118°03'E, Baker ( NHRS) .

Total length. — 4.50–5.75 mm (mean: 5.03 mm; n = 10)

Head. — Brown to reddish-brown. Impunctate. Antennae entirely black and only the first basal antennomeres usually contrasting brown ( Fig. 45 ). Ratio of length of second to third antennomere 0.75–1.00 (mean: 0.86); ratio of length of third to fourth antennomere 0.30–0.50 (mean: 0.39; Fig. 46 ).

Thorax. — Pronotum brown to reddish-brown. Pronotal width 1.30–1.80 mm (mean: 1.55), ratio length to width 0.61–0.65 (mean: 0.63). Scutellum black. Elytra entirely yellow to dark brown, sutural and lateral margin narrowly black ( Fig. 45 ). Elytral length 3.50–4.80 mm (mean: 4.05 mm), maximal width of both elytra together 2.50–3.40 mm (mean: 2.88 mm), ratio of maximal width of both elytra together to length of elytra 0.68–0.72 (mean: 0.70). Legs black throughout.

Abdomen. — Pale yellow to brown.

Male genitalia. — Median lobe less broad than in O. fulvipennis and narrowed towards the apex. Apically incised. Tectum long and broadened at base and pointed at apex. Endophallus in O. fulvipennis consists of laterally arranged slender median spiculae. The basal endophallus structures are present ( Fig. 47 ).

Female genitalia. — Nodulus of spermatheca small, slender and elongated, middle part and cornu long and curved ( Fig. 48 ). Two pairs of bursa sclerites; one spiny and sclerotized and one other pair of hook-shaped, bigger in size ( Fig. 49 ).

Distribution. — Only known from northern Borneo ( Fig. 43 ).

Diagnosis. — Orthoneolepta banggiensis can be differentiated from dorsal colouration with O. fulvipennis . The elytra of O. banggiensis are often with sutural and lateral margin narrowly black, and in O. banggiensis , the scutellum is black while brown to reddish-brown in O. fulvipennis ( Figs. 38 , 45 ). The median lobe is quite similar ( Figs. 40 , 47 ) and bursa sclerites of O. banggiensis are bit smaller than that of O. fulvipennis ( Figs. 42 , 49 ). The punctuation of O. fulvipennis is coarser.

Figures

Figs. 45–49. Orthoneolepta banggiensis (Mohamedsaid, 1997). 45, dorsal colour pattern. 46, antennae: a, male; b, female. 47, median lobe: a, dorsal; b, lateral; c, ventral. 48, three different spermathecae. 49, two pair of bursa sclerites.

Fig. 50. Paratype of Neolepta banggiensis Mohamedsaid, 1997: a, with labels; b, detail.

Fig. 43. Distribution of O. fulvipennis (Jacoby, 1884) and O. banggiensis (Mohamedsaid, 1997).

Figs. 38–42. Orthoneolepta fulvipennis (Jacoby, 1884). 38, dorsal colour pattern. 39, antennae: a, male; b, female. 40, median lobe: a, dorsal; b, lateral; c, ventral. 41, three different spermathecae. 42, two pair of bursa sclerites.