Naviauxella fedorenkoi Caswell & Droettboom & Hunter & Firing & Lee & Klymak & Stansby & De Andrade & Nielsen & Varoquaux & Root & Hoffmann & Elson & May & Dale & Lee & Seppänen & McDougall & Straw & Hobson & Gohlke & Yu & Ma & Vincent & Silvester & Moad & Katins & Kniazev & Ariza & Ernest 2019, sp.n.

Naviauxella fedorenkoi Matalin, sp.n.

Figs 1, 4–8.

TYPE MATERIAL. Holotype — ♀, Vietnam, Gia Lai Province, ~ 40 km NEE of Pleiku, Kon Ka Kinh National Park, 14°12´57´´N 108°19´19´´E, h = 1200 m, 9–22. V.2016, leg. D. Fedorenko (ZISP).

DESCRIPTION. TL — 8.2 mm (Fig. 1).

How to cite this article: Matalin A. V. 2019. Two new species of the genus Naviauxella Cassola, 1988 (Coleoptera: Cicindelidae) from Central Vietnam // Russian Entomol. J. Vol.28. No.1. P.13–18. doi: 10.15298/ rusentj.28.1.03

Head glabrous, bluish-black; genae bluish-green, finely striated; clypeus copper-bronze with light green tinge along anterior margin; frons purple-lilac in centre and copper-bronze on the sides, finely rugose except small smooth golden-copper tinged antennal plates; vertex bright copper-green with light golden tinge and narrow purple-lilac strip in the centre, coarsely rugose, with two prolonged impressions near anterior edge of each eye and long seta in each of them, supra-orbital plates copper with golden-green reflection, with 12 long shallow striae (Fig. 4), and a single long seta near posterior edge of each eye; occiput finely rugose, purple-lilac in the centre and copper-bronze on the sides, with golden reflection. Mandibles brownish-yellow except narrowly brownish teeth. Labial and maxillary palpi entirely pale yellow, both with more darkned apical joints. Labrum throughout covered by isodiametric microsculpture, dark yellow with narrow brownish anterior and posterior margins, transverse, 1.5 times wider than long (LL = 0.8, LW = 1.2), with a broad low central carina and two shallow impressions inside it, three apical teeth and four long submarginal setae (Fig. 5). Antennae filiform, reaching back over half of elytral length; first four antennomeres light brown, with distinct greenish reflection; scape with a single long apical seta; third antennomere with three setae and fourth antennomere with one short spiniform white seta on outer side except for short apical setae; antennomeres 5–11 black, finely and regularly pubescent.

Pronotum glabrous, 1.04 times longer than wide (PL = 1.45, PW = 1.4), slightly rounded converging towards base lateral sides, a thin midline with short green anterior and posterior impressions, and well-marked anterior and posterior transverse grooves; pronotal disc transversely rugose, copper-bronze with golden-green reflection and bright dark purple-lilacV-shaped patch along a midline, apical and basal lobes copper-bronze (Fig. 6). Prosternum glabrous and smooth, bluish with weak metallic reflection; mesepisterna black with a single short white seta at base and deep rounded pit in basal third; metepisterna black with bluish-green tinge, indistinctly rugose, sparsely covered by short, white, appressed setae; meso- and metathorax bluish-black with light golden metallic tinge, metathorax with sparse, short, white appressed setae on sides.

Elytra 1.88 times longer than wide (EL = 4.9, EW = 2.6), slightly dilated apically, with wide rounded shoulders and basal hump with a shallow depression behind, entirely covered by isodiametric sculpticells of microsculpture, background colouration copper-bronze with light purple reflection; elytral surface covered by numerous green punctures deeper in basal portion and shallow towards apical portion, lateral margin violet-blue, narrow longitudinal stripe extending from basal hump to apex purple-bronze; scutellum copper, finely rugulose; suture bronze in apical third clearly separated from elytral disc; epipleura in basal half brown, in apical half black; apices widely rounded and very finely microserrulate, sutural tooth very small; a white elytral pattern present in small basal portion of humeral lunula, in rounded basal and apical portions of middle band, and in basal portion of apical lunula with very long narrow sublateral portion extending practically to the suture (Figs 7–8).

Abdominal sternites glabrous, black with weak bluish tinge, sixth sternite dark-brown. Fore and middle coxae pale-yellow with greenish tinge basally, anterior surface of fore, as well as anterior and posterior surfaces of middle coxae with few short white appressed setae; hind coxae metallic bluish-green with golden reflection, with a few short white setae along lateral margin. Trochanters pale-yellow, fore trochanters with a long apical seta. Legs yellowish-brown except slightly darkened apices of tibia and each tarsomere with indistinct bluish tinge.

Male unknown.

ETYMOLOGY. In honour of Dr. Dmitryi Fedorenko, my good friend and the famous carabidologist who collected the holotype.

COMPARATIVE NOTES. Naviauxella fedorenkoi sp.n. is easily recognized from the females of other Naviauxella species with incomplete middle band by the coloration of elytra, the well marked basal portion of humeral lunula as well as the shape of apical lunula (Figs 7 – 8) [compare with Figs 16– 23 in Matalin, 2018b]. Among them N. fedorenkoi sp.n. is more similar to N. loebli Matalin, 2018, but in addition to mentioned above features the new species differs distinctly in the finer rugosity of the supraorbital area with 16 striae (Fig. 4) vs coarser rugosity of the supraorbital area with 12 striae in N. loebli (Fig. 3), as well as by the shape and coloration of pronotum (Fig. 6) [compare with Fig. 3 in Matalin, 2018b].