Monolepta ranuensis, 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 : 170-171

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/FF69BE51-750D-9807-FF67-F9C2FDCFFB78
treatment provided by	Felipe
scientific name	Monolepta ranuensis
status	sp. nov.

Treatment

Monolepta ranuensis sp. nov.

urn:lsid:zoobank.org:act:

Figs 26 View Fig , 57–58 View Fig View Fig

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. 57 View Fig ) . – Paratypes. 108 ex., same data as holotype ( BMNH). Type locality: 6º14′ S / 106º49′ E GoogleMaps .

together 1.70–1.90 mm (mean 1.74 mm), ratio of maximal width of both elytra together to length of elytron 0.69–0.73 (mean 0.71; Fig. 58A View Fig ). Legs yellow.

Abdomen. Yellowish.

Male genitalia. Median lobe lanceolate, becoming slightly towards apex. Median spiculae as few stronger spines, often slightly curved in dorsal view, on base with two horn-shaped structures ( Fig. 58 View Fig Cb), lateral spiculae slender with two small spines apically, ventral spiculae weakly sclerotized and hardly visible or absent ( Fig. 58C View Fig ).

Female genitalia. Spermatheca with small spherical nodulus and long and slender middle part and cornu ( Fig. 58D View Fig ). Bursa sclerites broad, nearly of same size with spiny margins ( Fig. 58E View Fig ).

Diagnosis. Monolepta ranuensis sp. nov. is with a total length of 3.25–3.70 mm the smallest “true” species of Monolepta from Sundaland area. Somewhat similar is the also unicolorous, but reddish-brown M. sulawensis sp. nov. that is of similar size and occurs syntopic at the same place on Sulawesi. In doubtful cases, the genital characters of both sexes allow a clear identification ( Figs 58C–E View Fig , 60C–E View Fig ). Also, the shallow transverse pronotal depression, and the elytral punctuation is characteristic for M. sulawensis sp. nov. There a several further small completely yellow species described in Monolepta (and probably even not yet described) in the region, and in many cases the genitalic dissection only allows an allocation to genus and species.

Distribution. Only recorded from the type locality in Central-Eastern Sulawesi ( Fig. 26 View Fig ).