Monolepta sulawensis, 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 : 171-172

Monolepta sulawensis sp. nov.

urn:lsid:zoobank.org:act:A42DE2FD-5B03-4665-9301-426212644D89

Figs 40 , 59–60

Type material. Holotype: ♂ ” Sulawesi Tengah, Nr. Morowali, Ranu River Area , 27.I.–20.IV.1980, S. L. Sutton & C. J. Rees; M. J. D. Brendell, B.M. 1980-281 ” ( BMNH; Fig. 138) . – Paratypes. 13 ex., same data as holotype, mainly captured by light ( BMNH) .

Etymology. Patronym.

Description

Total length. 3.70–4.25 mm (mean 3.90 mm; n = 10).

Head. Very finely punctuated, entirely brownish, as labrum and mandible. Antenna slender, extending to the middle of elytra, brownish, and the last antennomere often a bit darker ( Figs 59b , 60A ). Third antennomere shorter than second; ratio length of second to third antennomere 1.00–1.50 (mean 1.25); ratio length of third to fourth antennomere 0.37–0.42 (mean 0.38; Fig. 60B ).

Thorax. Pronotum very finely punctured, entirely yellowish to reddish-brown, shining and without depression. Pronotal width 1.20–1.25 mm (mean 1.22 mm), ratio length to width 0.60–0.64 (mean 0.62). Scutellum, meso- and metathorax brownish. Elytra entirely yellowish-brown to brownish. Elytral length 2.80–3.40 mm (mean 3.04 mm), maximal width of both elytra together 2.10–2.40 mm (mean 2.20 mm), ratio of maximal width of both elytra together to length of elytron 0.70–0.74 (mean 0.72; Fig. 60A ). Legs yellowish-brownish.

Abdomen. Yellowish-brownish.

Male genitalia. Median lobe broad, short, parallel-sided. Group of median spiculae at base and one pair of flattened structures with brushy apex in the middle, lateral spiculae as slightly curved plates, ventral spiculae club-shaped with brushy apex ( Fig. 60C ).

Female genitalia. Spermatheca with large spherical nodulus, broad middle part, slender cornu ( Fig. 60D ). Two pairs of differently structures bursa sclerites, both with fine saw-like margins ( Fig. 60E ).

Diagnosis. Monolepta sulawensis look somewhat similar to the also uniformly colored, but pale yellowish M. ranuensis sp. nov., but is larger (total length 3.70– 4.25 mm, M. ranuensis 3.25–3.70 mm). Short third antennomere is also characteristic for M. sulawensis sp. nov., as is the genitalic morphology ( Figs 58C–E , 60C–E ).

Distribution. Only recorded from the type locality in Central-Eastern Sulawesi ( Fig. 40 ).

Figures

Fig. 40. Distribution of Monolepta tiomanensis Mohamedsaid, 1999, M. kuninghitam sp. nov., and M. sulawensis sp. nov.

Fig. 59. Type material of Monolepta sulawensis sp. nov., holotype (BMNH).

Fig. 60. Monolepta sulawensis 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. 58. Monolepta ranuensis 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.