Mimastra guerryi Laboissière, 1929

Bezděk, Jan, 2011, Revisional study on the genus Mimastra (Coleoptera: Chrysomelidae: Galerucinae). Part 3: Mimastra oblonga and M. tarsalis species groups, Zootaxa 2766, pp. 30-56 : 41-45

Mimastra guerryi Laboissière, 1929 , status restored

( Figs 7, 25, 33, 41, 49, 55–56)

Mimastra guerryi Laboissière, 1929: 283 (original description); Gressitt & Kimoto, 1963: 536 (key), 538; Wilcox, 1973: 483

(catalogue); Jiang, 1992: 656; Yang et al., 1997: 880; Zhang et al. 2006: 205 (key); Medvedev, 2009: 265 (= cyanura ). Mimastra quadrivittata Mader, 1938: 59 (original description); Laboissière, 1940a: 23 (= guerryi ).

Type locality. Mimastra guerryi : “ Yunnan: Pe Yen Tsin; 29 nord de la frontière du Thibet; Djo Kon La, 450 kil. O. N. O. de Yunnan Fou; Yunnan central l´est de Tchin Kiang, Lou Fou Tsouen”. Mimastra quadrivittata : “ China, Yunnan: Vallis flum. Soling-ho; Gebirge bei Mengtze”.

Type material. Mimastra guerryi : Syntypes: 1♂ ( BMNH), labelled: “COTYPE [red letters, w, p] // Yunnan / Sen [w, h] // P. Querry / Roanne [w, p] // Brit. Mus. / 1939- [p] 149 [w, h] // Coll. / V. Laboissiere [w, p] // en publication [w, h] // Mimastra / Guerryi m. [h] / V. Laboissière – Dét. [w, p]” ; 1♀ ( ISNB), labelled: “ P. Guerry / Roanne [w, p] // Yunnan / Chine [w, h] // Mimastra / Guerryi m. [h] / V. LABOISSIÈRE – DÉT. [p] / Paratype [w, h] // Para- / type [orange label, p] // cf. Ann. Soc. Ent. / Fr., [p] 1929 / p. 283–285 [w, h] // R. Mus. Hist. Nat. / Belg. I. G. 12.752 [w, p] // sec. Weise, Col. Cat. / Junk (78), 1924: [p] p. 124 / M. ( Mimastra ) / Guerryi Laboiss. [w, h]” ; 1♂ ( ISNB), labelled: “ P. Guerry / Roanne [w, p] // Yunnan / Chine [w, h] // V. Laboissière det.,: [p] / Mimastra / Guerryi m. / Paratype [w, h] // Para- / type [orange label, p] // cf. Ann. Soc. Ent. / Fr., [p] 1929 / p. 283–285 [w, h] // R. Mus. Hist. Nat. / Belg. I. G. 12.752 [w, p] // sec. Weise, Col. Cat. / Junk (78), 1924: [p] p. 124 / M. ( Mimastra ) / Guerryi Laboiss. [w, h]” ; 1♀ ( ISNB), labelled: “ Coll. R. I. Sc. N. B. / Chine [p] Yunnan / Djo Kon La / P. Degenève [yellow label, h] // Mimastra / Guerryi / m [h] / V. Laboissière -- Dèt. [p] / 1927 [w, h] // Para- / type [orange label, p]” ; 3♂♂ 2♀♀ ( ZMUH), labelled: “ Yunnan / Sen [w, h] // TYPE [w, red letters, p] // Mimastra / Guerryi / m [h] / V. Laboissière -- Dèt. [p] / 1927 [w, h] // Le Moult vend. / via Reinbek / Eing. Nr. 1, 1957 [w, p]” ; 1♀ ( MNHN), labelled: “ Museum Paris / Yunnan / S.-O 24°N / Pe-Yen-Tsin / ( Mines de Sel ) / (Père Siméon Ten) / P. Guerry 1924 [w, p] // OCTOBRE [w, p] // TYPE [w, red letters, p] // Mimastra / Guerryi m. [h] / V. Laboissière -- Dèt. [p] / 1927 [w, h]” ; 1♀ ( MNHN), labelled: “ Yunnan / Chine [w, h] // Mimastra / malepicta / Fairm. n sp [w, h] // 69 [w, h] // TYPE [w, red letters, p] // Mimastra / Guerryi / m [h] / V. Laboissière -- Dèt. [w, p]” .

Mimastra quadrivittata : Syntypes: 1♂ ( NMPC), labelled: “ China. / Prov. Yunnan. / Vallis flumin / Soling-ho [w, p] // Para [h] / COTYPUS [p] / 4-vittata m. [pink label, h] // Mimastra / 4-vittata Mad. / Paratypen ♂ [w, h]” ; 4♂♂ ( NMPC), labelled: “ China. / Prov. Yunnan. / Vallis flumin / Soling-ho [w, p] // Para [h] / COTYPUS [p] / 4- vittata / m. [pink label, h]” ; 2♂♂ ( NMPC), labelled: “ China. / Prov. Yunnan. / Vallis flumin / Soling-ho [w, p] // Para [h] / COTYPUS [p] / 4-vittata / m. [pink label, h] // Mimastra / 4-vittata / Mad. [w, h] // Coll. Matějka / Mus. Nat. Pragae [w, p]” ; 2♂♂ ( NMPC), labelled: “ China. Prov. / Yunnan. Gbg. / b. Mengtze. [w, p] // Para [h] / COTY- PUS [p] / 4-vittata / m. [pink label, h] // Mimastra / 4-vittata / Mad. [w, h] // Coll. Matějka / Mus. Nat. Pragae [w, p]” ; 1♀ ( NMPC), labelled: “ China. Prov. / Yunnan. Gbg. / b. Mengtze. [w, p] // Para [h] / COTYPUS [p] / 4-vittata / m. [pink label, h]” ; 1♂ ( NMPC), labelled: “ Vallis flumin. / Soling-ho, Yun. [w, p] // Para [h] / COTYPUS [p] / 4- vittata / m. [pink label, h]” .

Additional material studied. 21 specimens — CHINA: YUNNAN : 1♀, Yunnansen ( SMNS) ; 4♂♂, Yunnan , without additional data ( BMNH, NMPC) ; 1♂ 2♀♀, Yunnan , P. Guerry leg. ( BMNH) ; 2♀♀, Ninglang env., 6.– 10.vii.1992, E. Jendek leg. ( JVJC) ; 1♂, Dali env., Wenshui village , 2559.55N 10002.32E, 2000 m, 4.vi.2002, A. Konstantinov & M. Volkovitsh leg. ( USNM) ; 3♂♂ 1♀, Yunnan , 1.viii.1944, Chung Lo Liu leg. ( USNM) ; 2♂♂ 1♀, Yunnan , Kunming, 1961, 3kopek leg. ( NMPC) ; 1♀, Cangshan Mts. , 25°38´N 100°09´E, 2600–3100 m, 5.– 6.vi.1993, V. Kubáň leg ( NHMB) . SICHUAN: 1♀, Gebirge bei Ningyuenfu [= Xichang, Sichuan] ( SMNS) . INDIA: ARUNACHAL PRADESH: 1♀, Dirang vicinity, 2721-23´N 9213-16´E, 1550 m, 1.–9.vi.2004, L. Dembick leg. ( NHMB) .

Description. Body length—males: 8.6–9.3 mm, females: 10.0– 10.4 mm.

Male: Head yellow, base of vertex with metallic black irregular collar – laterally extended and usually touching the eyes, narrow median stripe reaching the frontal tubercles, apices of mandibles black, anterior part of head with blackish spot in the middle. Antennomeres 1–3 yellow, rest gradually darkened. Pronotum yellow with 5 black spots forming shape of alphabet ‘M’ (two large black spots laterally near posterior angles; three small indistinct spots in middle of disc and in front of pronotal base which are often brownish or indistinct). Scutellum yellow. Elytra yellow with two longitudinal black or metallic green stripes ( Figs 7, 55), very rarely connected apically ( Fig. 56), but never touching apical margin of elytra. Extreme apical margin of elytra black. Pro- and mesosternum yellow. Metasternum and abdomen black with blue metallic tint. Femora and tibiae yellow with black stripe on both inner and outer margins, apices of tibiae usually completely darkened. Protarsi with yellow or brown first segment, rest black, meso- and metatarsi usually completely black.

Labrum transverse, with several long pale setae, anterior margin shallowly incised. Head shiny, glabrous, with several pale setae ventral to antennal sockets and in anterior part of clypeus. Interocular space 1.85–1.90 times as wide as transverse diameter of eye. Frontal tubercles subtriangular, distinctly elevated, separated from each other by a thin furrow. Interantennal space 0.8 times as wide as transverse diameter of antennal socket. Vertex impressed behind frontal tubercles. Antennae filiform, 0.90 times as long as body, length ratio of antennomeres 1–11 equals 35-12-18-38-35-37-37-37-37-34-34.

Pronotum transverse, 1.60 times as broad as long, widest at first quarter, slightly convergent posteriorly. Surface lustrous, almost impunctate, glabrous, with two distinct transverse lateral depressions. Anterior margin slightly concave, posterior margin slightly rounded, lateral margins nearly straight. All margins distinctly bordered. Anterior angles moderately swollen, slightly produced anteriorly, posterior angles obtusely angulate. All angles with setigerous pore bearing one long pale seta. Scutellum subtriangular with rounded apex, shiny, glabrous.

Elytra shiny, slightly divergent posteriorly, covered with small dense confused punctures, glabrous (only with several pale hairs on apical slopes). Humeral calli well developed. Epipleura narrow, gradually disappearing before apex. Macropterous.

Ventral surface shiny, finely punctate, densely covered with pale hairs. Last ventrite impressed in middle, posterior margin almost straight with two feebly indicated incisions. First protarsomere rounded, cavity covers basal two third of profile in inner lateral view ( Fig. 33). Protibia moderately widened anteriorly ( Fig. 41). Basimetatarsomere as long as two following tarsomeres combined.

Median lobe of aedeagus widest at basal third, gradually narrowed anteriorly, with median ventral groove in apical two third ( Fig. 25).

Female: First protarsomere not enlarged. Abdomen robust, convex, last ventrite with regularly rounded posterior margin. Spermathecal cornu long, regularly rounded, distinctly wider than nodulus, nodulus slightly extended apically, proximal spermathecal duct as long as nodulus (Fig. 49).

Differential diagnosis. Due to two longitudinal black or metallic green stripes on each elytron, very rarely connected apically ( Figs 55–56), it is easy to differentiate M. guerryi from other Mimastra species. Similar stripes is observed only in very rare forms of M. soreli ( Figs 53–54), but the stripes never touch apical margin of elytra in M. guerryi while the metallic pattern always cover whole apical quarter of elytra in M. soreli .

Distribution. China: Sichuan ( Jiang 1992, Yang et al. 1997, present paper), Yunnan ( Mader 1938, Gressitt & Kimoto 1963, Jiang 1992, present paper). New record from India: Arunachal Pradesh.

Mimastra anicka Bezd ě k, sp. nov.

( Figs 8, 26, 34, 42, 50)

Type locality. Thailand, Mae Hong Son prov., Soppong-Pai.

Type material. 25 specimens — Holotype ♂ ( NMPC), labelled: “THAI 1–8.V.1993 / SOPPONG PAI 1800m / Pacholatko & / & Dembicky leg. [w, p]” . Paratypes: 8♂♂ 7♀♀ (2♀♀ in NMPC, 1♂ in NHMB, 1♂ in BMNH, 4♂♂ 4♀♀ in JVJC, 2♂♂ 1♀ in JBBC), same labels as in holotype ; 2♀♀ ( JBCB), labelled: “ THAILAND, 23.vi.– 2.vii.2002, / Mae Hong Son pr., 1400 m, / Kiwlom pass near Soppong / WGS 84: 1926´N 9819´E, / lgt. R.+ H. Fouqué [w, p]” ; 1♀ ( NHMB), labelled: “NW THAILAND / 1.– 6.5.1991 / SOPPONG - PAI 1800m / LEG. PACHO- LÁTKO [w, p]” ; 3♂♂ 1♀ ( JBBC), labelled: “NW THAILAND / SOPPONG PAI 1800m / 25.4.– 5.5.1992 / leg. P. Pacholatko [w, p]” ; 1♀ ( JBBC), labelled: “NW THAILAND 1700 m / Chiang Mai prov. / BAN SAN PAKIA 25.IV / - 7.V.1996 Sv. Bílý lgt. [w, p]” ; 1♀ ( JBBC), labelled: “N Myanmar, 1250 m, / 65 km NW Putao, / Ziyardam vill., 18–21.v. / 1998, S. Murzin leg. [w, p]”. The specimens are provided with one additional printed red label: “HOLO- TYPUS, [or PARATYPUS, respectively], / Mimastra / anicka sp. n., / J. Bezděk det. 2010” .

Description. Body length: males 7.5–8.7 mm (holotype 8.3 mm); females 9.0– 10.6 mm.

Holotype (male, Fig. 8): Body moderately flattened, subparallel, slightly extended posteriorly, glabrous, only apical slopes of elytra with sparse hairs. Head yellow, base of vertex with metallic black irregular collar – laterally touching eyes, median stripe reaching frontal tubercles, anterior part of head with very small blackish spot in middle, frontal tubercles with indistinctly darkened margins, apices of mandibles black. Antennomeres 1–3 yellow, rest black. Pronotum yellow with 7 black spots: two narrow stripes along lateral margin (indistinctly connected with large lateral spots on the disc) and 5 discal spots forming shape of alphabet ‘M’ (two small indistinct spots in middle of disc, one small spot in middle in front of pronotal base and two large spots laterally near posterior angles. Scutellum yellow. Elytra yellow with apical quarter metallic black with dark green tint. Prosternum yellow, anterior margin indistinctly darkened laterally. Mesosternum yellow. Metasternum and abdomen black with blue metallic tint. Fore legs: coxae yellow with black proximal half, trochanters yellow, femora yellow with thin black stripe on outer margin, tibiae yellow with dark apex, outer side with thin black stripe. Middle legs: coxae yellow with black base, trochanters yellow, femoral venter yellow with black basal half, dorsum almost completely black, tibiae dark brown, gradually turning darker towards apex. Hind legs: coxae black, trochanters yellow, femora black with paler base and apex, tibiae black with paler base. Tarsi black, tarsomeres paler proximally.

Labrum transverse, with several long pale setae, anterior margin with moderately shallow, wide incision. The anterior part of head semiopaque, covered with very fine microsculpture, almost glabrous, with several pale setae ventral to antennal sockets and on anterior part of clypeus. Clypeus shallowly triangularly impressed. Interocular space 1.90 times as wide as transverse diameter of eye. Frontal tubercles covered with very fine microsculpture, subtriangular, distinctly elevated, separated from each other by a thin furrow. Interantennal space as wide as transverse diameter of antennal socket. Frons impressed behind frontal tubercles.Vertex glabrous, almost impunctate. Antennae filiform, 0.95 times as long as body, length ratio of antennomeres 1–11 equals 30-13-20-41-36-36-36-36- 33-30-32.

Pronotum transverse, 1.55 times as broad as long, widest at first quarter, slightly convergent posteriorly. Surface lustrous, almost impunctate, glabrous, with two distinct transverse lateral depressions, slightly impressed also along margins. Anterior margin nearly straight, very thinly bordered (almost indistinctly in middle). Posterior margin almost straight, distinctly bordered. Lateral margins slightly sinuate, distinctly bordered. Anterior angles rounded, moderately swollen, slightly produced anteriorly, posterior angles obtusely angulate. All angles with setigerous pore bearing one long pale seta, lateral margins near anterior angles with several short setae. Scutellum triangular with rounded apex, covered with fine microsculpture, shiny, glabrous.

Elytra shiny, slightly divergent posteriorly, covered with small dense confused punctures and sparse pale hairs visible only on apical slopes. Humeral calli well developed. Epipleura narrow, gradually disappearing before apex. Macropterous.

Ventral surface semiopaque, finely punctate and densely covered with pale hairs. Abdomen relatively flat, last ventrite feebly impressed in middle, posterior margin almost straight with two feebly indicated incisions. Basimetatarsomere as long as two following tarsomeres combined. Claws appendiculate.

Median lobe of aedeagus widest at basal third, gradually narrowed anteriorly, with median ventral groove in apical half, in lateral view bent near middle ( Fig. 26).

Female: Interocular space 2.45 times as wide as transverse diameter of eye. Antennae shorter, 0.80 times as long as body. Abdomen robust, convex, last ventrite with regularly rounded posterior margin and with two feeble impressions lateratlly. Spermathecal cornu regularly rounded, as wide as nodulus, nodulus large, slightly extended apically, proximal spermathecal duct twice shorter than nodulus (Fig. 50).

Differential diagnosis. Due to the dark metallic apical quarter of elytra, Mimastra anicka sp. nov. is very similar to M. soreli , M. cyanura and to rare dark forms of M. oblonga . Mimastra anicka sp. nov. can be distinguished by the combination of the following characters: the structure of the first male protarsomere, protibiae, median lobe of aedeagus, and the coloration of elytra. In lateral view, the protarsomere of M. anicka sp. nov. is arched with a large semicircular cavity covering almost the whole profile ( Fig. 34). The other species have the first protarsomere relatively flat with a smaller cavity ( Figs 28–29, 31). The shape of male protibia of M. anicka sp. nov. is similar to that of M. soreli and M. cyanura , while M. oblonga has distinctly slender protibia ( Figs 36–37, 39, 42). Median lobes of aedeagi of these species are very similar, however, in lateral view the median lobe of M. anicka sp. nov. is bent near the middle, while in the other species it is bent more apically ( Fig. 26). Median lobe of aedeagus of M. cyanura ( Fig. 21) is narrower in the dorsal view than that of M. anicka sp. nov. I am not sure if the groove on the ventral side may be a good diagnostic character. While in some species ( M. soreli , M. cyanura or M. anicka sp. nov.) the shape of this groove seems to be stable, in M. oblonga it may vary in its length and depth depending on the extent of sclerotization of the aedeagus. The apical quarter of elytra is metallic blue in M. soreli , while M. anicka sp. nov., M. cyanura and M. oblonga have the apical quarter dark green. The shape of the apical spot of M. oblonga is variable, usually it is smaller than in the other species.

Variability. The shape of the metallic collar on vertex is variable. In some paler specimens it does not touch the eyes laterally. The dark specimens have the collar extended covering most of vertex (except two small orange spots behind frontal tubercles). However, in the female from Myanmar the vertex is completely metallic.

Distribution. Thailand and Mynmar.

Etymology. This species is dedicated to my daughter Anička; the specific epithet is a noun in apposition.