Munina donacioides Chen, 1976

K, Jan Bezd Ě, 2009, Revision of the genus Munina (Coleoptera: Chrysomelidae: Galerucinae), with the description of M. laotica sp. nov. from Laos, Zootaxa 2032, pp. 55-62 : 57-62

publication ID	https://doi.org/ 10.5281/zenodo.186287
DOI	https://doi.org/10.5281/zenodo.6213827
persistent identifier	https://treatment.plazi.org/id/95766C36-973A-2600-FF46-296B09D4FD1A
treatment provided by	Plazi
scientific name	Munina donacioides Chen, 1976
status

Treatment

( Figs. 1–2 View FIGURES 1 – 4 , 5, 7, 9 View FIGURES 5 – 10 , 11, 13, 15 View FIGURES 11 – 16 )

Munina donacioides Chen in Chen et al., 1976: 210, 221 (original description).

Munina flavida Yang & Yao in Yang et al., 1997: 388, 391 (original description), syn. nov.

Type localities. Munina donacioides : “Yunnan. Munina flavida : „Bubang, Xishuangbanna (21.9°N, 101.2°E), Yunnan Prov.”.

Type material. Munina donacioides: Not examined. Munina flavida : 1 paratypus f* ( IZCAS), labelled: „[in Chinese] [= Yunnan, Xishuangbanna, Menglun, 600m, Chinese Academy of Sciences] [w, p] // [in Chinese] [= 22.iv.1994, rain forest, Yang Longlong leg.] [w, p] // PARATYPE [yellow label, p] // Munina / flavida Yang et Yao [w, h]”.

Additional material studied. 2 specimens — CHINA: 1 m * ( IZCAS), Yunnan, Xishuangbanna, Menglun, 600 m, rain forest, 21.iv.1994, Yang Longlong leg.; LAOS: 1 f* ( JBCB), Phongsali prov., Boun Neua env., 1100 m, 26.–30.v.2004, Lao collector leg.

Redescription. Body length. Males: 6.60 mm (7.00– 7.50 mm according to Chen, 1976), females: 7.35–7.75 mm (7.00 mm according to Yang, 1997).

Male. Metallic blue, distinctly opalescent, elytra with indistinct reddish tint. Lateral sides of clypeus, apices of mandibles and both anterior and posterior margins of prothorax reddish brown. First antennomere metallic blue, the rest black. Legs black with brownish knees.

Labrum transverse, with several setigerous pores bearing pale seta at each side, anterior margin widely shallowly incised. Clypeus semiopaque, microsculptured, covered with long pale hairs, posterior keel reaching the half of antennal insertions. Interantennal space 0.7 times as wide as transverse diameter of antennal insertion. Frontal tubercles lustrous, elevated, separated from frons and each other by deep furrows. Frons shallowly depressed behind frontal tubercles. Vertex lustrous, indistinctly punctate, sparsely covered with pale hairs. Antennomeres 2 and 3 very short, equal, the fourth antennomere 4 times longer than two preceding ones together, length ratio of antennomeres 1 to 6 (rest broken in available specimen): 20–5–5–41 –44–41.

Pronotum subquadrate, 1.35 times wider than long, widest in the middle. Lateral and posterior margins distictly bordered, anterior narrowly margin bordered. Surface of pronotum distinctly concave, with two small shallow depressions behind the middle ( Fig. 7 View FIGURES 5 – 10 ). Pronotum lustrous, glabrous, covered with indistinct fine punctures. Anterior angles bulged, prominent, setigeous pore situated in the hind part of bulge. Posterior angles situated at lateral sides, prominent, triangular, setigerous pore in the tip of angle. Anterior margin widely shallowly convex, lateral sides slightly rounded, posterior margin obliquely rounded behind posterior angles, pronotal base nearly straight.

Scutellum subtriangular, with rounded tip, subopaque, covered with small indistinct punctures and with microsculpture.

Humeral calli well developed, slightly prominent anteriad, inner margin imressed. Elytra densely covered with large punctures arranged in irregular striae and with long pale erect hairs. Interspaces between punctures slightly swelling. Elytral base wedged, replicating the shape of pronotum. Scutellar area slightly elevated, postscutellar area with shallow depression. Epipleurae relatively broad, initially wide, tapered at one quarter of elytral length and then gradually narrowed posteriad, dissapearing before apex. Macropterous.

Ventral surface semi–gloss, covered with small fine puncture and short pale hairs. The last ventrite with sharp and short incisions ( Fig. 9 View FIGURES 5 – 10 ). Legs long, narrow, covered with short pale hairs, middle and posterior tibiae unarmed at apex. The first segment of posterior tarsi twice longer than the following two segments together.

Aedeagus long, subparallel, narrowest behind the middle, apical part distinctly extended and flatened ( Fig. 5 View FIGURES 5 – 10 ). Spermatheca with nodulus elongated, less robust, collum constricted in the middle ( Fig. 15 View FIGURES 11 – 16 ). Posterior part of tignum connected with sternite VIII by narrow U–shaped entering ( Fig. 11 View FIGURES 11 – 16 ). Vaginal palpi coalescent before the middle, anterior part robust, almost parallel, posterior processions long, thin, slightly extended in the basal third ( Fig. 13 View FIGURES 11 – 16 ).

Female. Metallic blue, prothorax red. Lateral sides of clypeus and knees reddish brown. The third antennom ere 2.5 times longer than antennomere 2, length ratio of antennom eres 1 to 11: 19–6–15 –37–40–39–37–32–31–31–30.

Discussion. Munina donacioides was described according to 3 males deposited in IZCAS. Unfortunately, the type material was not found (Zhang, 2007, pers. comm.). On the other hand, there was found one nontype male of M. donacioides which fit very well with the original description. This male was collected together with the primary types (females) of M. flavida . The differencies between male of M. donacioides and female of M. flavida suggested that these are the result of sexual dimorphism. Because the same sexual dimorphism (colour of pronotum, the length of antennomeres 2 and 3) was found also in M. laotica sp. nov., the conspecifity of M. donacioides and M. flavida is verified. Thus, M. flavida is synonymized here with M. donacioides .

Distribution. China (Yunnan). New species for Laos.

Munina laotica Bezd ĕ k, sp. nov. ( Figs. 3–4 View FIGURES 1 – 4 , 6, 8, 10 View FIGURES 5 – 10 , 12, 14, 16 View FIGURES 11 – 16 )

Type locality. Laos, Viangchan prov., Muang Vangviang env.

Type material. Holotype m* ( NMPC), labelled: „ LAOS – Viengchan prov., / Muang Vangviang env., / 10.–13.v.2003, / O. Šafránek leg. [w, p]”. Paratypes: 2 m *m* ( JBCB), same label data as holotype; 1 f* ( JBCB), labelled: „ LAOS –C; Boli Kham Xai prov., / PAKKADING; ~ 300m; / 1820´ N 10400 View Materials ´E; / C. L. Peša leg.; 1.–2.vi.2001 [w, p]”. The specimens of newly described species are provided with one red printed label: „ HOLOTYPUS [PARATYPUS, resp.], / Munina / laotica sp. nov., / det. J. Bezdĕk 2008“.

Description. Body length. Males: 6.50–7.50 mm (holotype: 6.50 mm), female: 7.35 mm.

Male. Whole body metallic blue, opalescent, mouth parts brownish, frons with badly delimited triangular reddish spot (tip directed posteriad). The first antennomere metallic blue, the rest opaque, black. One immature male with head and pronotum completely pale red.

Labrum short, transverse, with three setigerous pores bearing pale seta at each side, anterior margin widely shallowly incised. Clypeus semiopaque, microsculptured, covered with long pale hairs, posterior keel reaching the level of posterior margin of antennal insertions and divides the tips of frontal tubercles. Interantennal space as wide as transverse diameter of antennal insertion. Frontal tubercles lustrous, elevated, separated from frons and each other by deep furrows. Frons shallowly depressed behind frontal tubercles. Vertex lustrous, impunctate, sparsely covered with pale hairs. Antennae slender, 0.9 times as long as the body, antennomeres 2 and 3 very short, equal, the fourth antennomere 3 times longer than two preceding ones together, length ratio of antennomeres 1 to 11: 22–5–5–31 –31–30–27–27–26–24–28.

Pronotum subquadrate, 1.25 times wider than long, slightly divergent anteriad, widest at the first quarter. Lateral and posterior margins distictly bordered, the bordering of anterior margin distinct but narrower than in lateral and posterior margins. Surface of pronotum distinctly concave, with two large shallow depressions laterally reaching lateral margins – pronotum looks constricted in the middle ( Fig. 14 View FIGURES 11 – 16 ). Pronotum lustrous, glabrous, covered with indistinct fine punctures. Anterior angles rounded, prominent, bulged, setigeous pore situated in the hind part of bulge. Posterior angles situated at lateral sides, prominent, triangular, setigerous pore in the tip of angle. Anterior margin widely shallowly convex, lateral sides slightly convergent posteriad, almost straight, posterior margin obliquely rounded just behind posterior angles, pronotal base straight.

Scutellum subtriangular, with rounded tip, lustrous, covered with microsculpture.

Elytra with well developed humeral calli. Surface densely covered with large punctures arranged in irregular striae and with long pale erect hairs. Interspaces between punctures slightly swelling. Elytral base wedged, replicated the shape of pronotum, humeral calli somewhat prominent anteriad. Inner margin of humeral calli distictly impressed. Scutellar area slightly elevated, postscutellar area with shallow depression. Epipleurae well developed, initially wide, tapered at one quarter of elytral length and then gradually narrowed posteriad, dissapearing before apex. Macropterous.

Ventral surface semi–gloss, covered with small fine puncture and short pale hairs. Last ventrite with short but wide incisions ( Fig. 10 View FIGURES 5 – 10 ). Legs long, narrow, covered with short pale hairs, middle and posterior tibiae unarmed at apex. First segment of posterior tarsi ca 1.5 times longer than the following two segments together.

Aedeagus long and relatively thin, narrowest in the middle, apical part slightly extended and flatened ( Fig. 6 View FIGURES 5 – 10 ). Spermatheca as in Fig. 16 View FIGURES 11 – 16 , nodulus bulbous, collum slightly sinuate. Posterior part of tignum connected with sternite VIII by widely U–shaped entering ( Fig. 12 View FIGURES 11 – 16 ). Middle part of vaginal palpi distinctly narrower than anterior part, posterior processions short, thin, coalescent at first quarter of vaginal palpi length ( Fig. 14 View FIGURES 11 – 16 ).

Female. Metallic blue, head and pronotum dark red, frons somewhat paler. Elytra with slight coppery tint. Antennomere 3 twice longer than antennomere 2, length ratio of antennomeres 1 to 10 (antennomere 11 missing in available specimen): 21–6–12–30–28 –26–26–24–22–22.

Differential diagnosis. Munina laotica sp. nov. can be distinguished from M. donacioides by the following characters: whole body of males metallic blue, frons with triangular reddish spot (males of M. donacioides with head completely metallic blue, pronotum with both anterior and posterior margins thinly reddish); female with red head and pronotum (female of M. donacioides with blue head and red pronotum); pronotum with two large shallow depressions laterally reaching lateral margins (in M. donacioides with two small shallow depressions behind the middle) ( Figs. 7–8 View FIGURES 5 – 10 ); epipleurae narrower than in M. donacioides ; aedeagus narrower in apical part ( Figs. 5–6 View FIGURES 5 – 10 ); the shapes of spermatheca, vaginal palpi and tignum as in Figs 11–16 View FIGURES 11 – 16 .