Monolepta empatbulat, Hazmi & Wagner, 2022

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 : 165-166

publication ID	https://doi.org/10.20363/BZB-2022.71.2.139
publication LSID	lsid:zoobank.org:pub:7FFF8A8D-1640-4565-A9DE-239D1CD7F50A
persistent identifier	https://treatment.plazi.org/id/FF69BE51-7508-983C-FF4D-F9BEFE33FBB5
treatment provided by	Felipe
scientific name	Monolepta empatbulat
status	sp. nov.

Treatment

Monolepta empatbulat sp. nov.

urn:lsid:zoobank.org:act:7640433E-FB08-4E32-956A-20EE24D45BDA

Figs 45–47 View Fig View Fig View Fig

Type material. Holotype: ♂ “ Brunei , Labi , Bukit Teraja 60 m, Mxt. Dipt. Forest, B.M. 1983-39, Light trap 1, 75 m above ground, 21. VIII.79, S. L. Sutton, 906, 2634” ( BMNH; Fig. 46 View Fig ). Type locality: 4º18′ N / 114º26′ E GoogleMaps . – Paratypes: Brunei. 2 ex., same data as holotype GoogleMaps ; 3 ex., same data but 24. VIII GoogleMaps ., 26. VIII. ( BMNH). – Indonesia. 1 ex., Indonesia, Borneo, Kalimantan Tengah Busang / Rekut conf., 0º03′ S / 113º59′ E, VIII GoogleMaps .2001, Brendell /Men- del ( BMNH) . – Malaysia.; 1 ex., Tawai, 1300ft., 8 m S. Telupoid , 5°30′ N / 117°24′ E, IX.1977, M. E. Bacchus ( BMNH) GoogleMaps .

Etymology. The name refers on the elytral colouration with four spots. Empatbulat means “four spots” in Malay. Description

Total length. 3.25–3.80 mm (mean 3.55 mm; n = 10).

Head. Very finely punctuated, entirely blackish and shining, also labrum and mandible blackish. Antenna long and slender, blackish and only three basal antennomeres yellowish ( Fig. 47A View Fig ). Second antennomere slightly shorter than third; ratio length of second to third antennomere 0.67–1.00 (mean 0.93), ratio length of third to fourth antennomere 0.29–0.43 (mean 0.34; Fig. 47B View Fig ).

Thorax. Pronotum finely punctuated, broad, entirely yellow to brownish-yellow. Pronotal width 0.95–1.20 mm (mean 1.06 mm), ratio length to width 0.63–0.66 (mean 0.64). Scutellum, meso- and metathorax black. Elytra elongated and broadened towards apex. Elytron black, with four yellowish spots ( Fig. 46b View Fig , 47A View Fig ). Elytral length 2.50–2.75 mm (mean 2.67 mm), maximal width of both elytra together 1.80–2.00 mm (mean 1.92 mm), ratio of maximal width of both elytra together to length of elytron 0.70–0.73 (mean 0.72). Legs yellow-brownish and distal parts of femur and tibia brown to blackish ( Fig. 46b View Fig ).

Abdomen. Yellowish-brown, darker in the middle and apical part of the abdomen.

Male genitalia. Median lobe broad and conical towards apex. Tectum broad at base and narrowing towards apex. Median spiculae of long, slender and flattened, ventral spiculae shorter, club-shaped, jagged-like apically, lateral spiculae club-shaped, basally widened ( Fig. 47C View Fig ).

Female genitalia. Spermatheca with small spherical nodulus, median part and cornu long and slender ( Fig. 47D View Fig ). Bursa sclerites of similar size, strongly sclerotized and with strong spines ( Fig. 47E View Fig ).

Diagnosis. Monolepta empatbulat sp. nov. is most similar to M. mohamedsaidi sp. nov. and M. zonula in colouration and size. These species have a black head, black elytra with yellow spots, and black meso- and methothorax in common. M. zonula can be distinguished by yellow antennae ( Fig. 25A View Fig ) from the other two species with predominantly black antenna ( Figs. 47A View Fig , 56A View Fig ). The legs of M. empatbulat sp. nov. are partly brownish to black, while the other two species have entirely yellow legs. In any doubtful cases the strong differences in the genitalic morphology of both species allow a clear allocation ( Figs 25C–E View Fig , 47C–E View Fig , 56C–E View Fig ).