Naupactus mimicus Hustache, 1938

Lanteri, Analia A. & del Río, María G., 2017, Naupactus xanthographus (Germar) species group (Curculionidae: Entiminae: Naupactini): a comprehensive taxonomic treatment, Journal of Natural History 51 (27 - 28), pp. 1557-1587 : 1575-1576

Naupactus mimicus Hustache

( Figures 1 (g – i), 3h, 4(g, h), 5a)

Naupactus mimicus Hustache 1938, p. 268 . Type material: male labelled as typus, S. Catarina, Brazil, Schramm col, at the MNHN, Hustache collection, herein designated as lectotype . Body length: 10.5 mm.

Naupactus justus Bondar 1949, p. 176 . Type material: male labelled as cotype, Ponta Grossa , Paraná, Brazil at AMNH, herein designated as lectotype . Body length: 11 mm. Synonymy by Kuschel 1955, p. 279.

Naupactus mimicus: Blackwelder 1947, p. 794 ; Wibmer and O ’ Brien 1986, p. 60.

Redescription. Female ( Figure 1g, i )

Body length 12 – 13 mm. Vestiture uniformly brown or grey-brown with white stripes on pronotum and elytra; pronotum with two pairs of whitish stripes, one on disc and the other on margins; elytra with contrasting white stripe along suture (typical form, Figure 1g ) or greyish-brown, with less contrasting stripe along suture, and white stripes on middle half of 3° interval, anterior third of 5° interval, and 7 – 8° intervals, the latter stripe interrupted near middle-length and curved towards 4 – 5° intervals on posterior third (variety, Figure 1h ). Rostrum 1.05 – 1.10× as long as wide at apex; lateral carinae strong, subparallel. Eyes round, convex. Scape reaching anterior margin of pronotum; funicular article 2, about twice as long as article 1. Pronotum 1.15 – 1.20× as wide as long in females; sides curved; disc flat, slightly rugose. Elytra oval, 1.50 – 1.60× as long as wide; sides moderately curved and not abruptly narrowed towards apex; apical tubercles large; intervals about 2 – 2.5× as wide as punctures of striae. Front femora 2.95 – 3.10× as long as wide and 1.20 – 1.30× as wide as hind femora. Front tibiae with large mucro and 9 – 10 large denticles on inner margin; middle tibiae with small mucro and lacking denticles; hind tibiae lacking mucro and denticles; corbel of hind tibiae narrow, squamose. Ventrite 5 slightly shorter than ventrite 2.

Female genitalia

Ovipositor slightly shorter than abdomen, lacking rows of long setae on posterior third, on external side of baculi. Spermatheca ( Figure 3h ) subcylindrical, small (0.5 mm); nodulus conical, short; ramus indistinct; spermathecal duct about 4× as long as spermatheca.

Male ( Figure 1h )

Body length 10.5 – 13 mm. Smaller and more slender than females. Pronotum about as wide as long. Elytra about twice as long as wide, with smaller apical tubercles. Ventrite 5 about twice as long as ventrite 2, apex slightly inwardly curved.

Male genitalia ( Figure 4g, h )

Body of penis about 1.90 – 2× as long as penis apodemes; apex arrow-shaped, slightly truncate; ostium about 3× as long as wide; endophallus with distinct spiny area but lacking internal pieces.

Other material examined

BRAZIL. Paraná: Guaraúna , June 1937, J Pinheiro & Machado (1f MZSP); Ponta Grossa, 5 December 1938, Camargo (1f 1m DZUP); December 1937, CA Camargo (2m CEIOC); idem, December 1938, CA Camargo (14f 16m MZSP); idem, 7 December 1939, 9 December 1939, Camargo (1f 1m MZSP); Rio Negro , M Leitão (1f MNRJ); idem, November 1923, M Witte (1m MNRJ) . Santa Catarina : Joinville, 27° 51 ʹ S, 50° 48 ʹ W, F Plaumann (3f 5m MZSP); Lages, 13 February 1973 (1f DZUP); Nova Teutonia, January 1961, F Plaumann (1f MZSP); idem, April 1936, F Plaumann (2f MZSP); idem, September 1966, F Plaumann (5f 3m MZSP); São Bento do Sul, January 1051, Dirings. (1f MZSP) ; Tres Barras, 26 November 1961, WA Bishop (1f MNRJ); no loc. (1f paralectotype MNHN) . No loc. (2m MNHN) .

Geographic distribution ( Figure 5a, d )

Naupactus mimicus is endemic to Brazil (Paraná and Santa Catarina states) and occurs mainly in the Araucaria forest, close to the limit with the Atlantic forest .

Remarks

Naupactus mimicus was described based on a series of specimens (= syntypes) from Brazil, Santa Catarina . The male from this location labelled as typus is herein designated as lectotype. Along with this specimen there is a female with the same data, herein considered a paralectotype . Naupactus justus was described based on a series of specimens (= syntypes), females and males, from Brazil, Paraná, deposited in the author ’ s collection (currently at the American Museum Natural History) and the Chicago Natural History Museum . We designated the male of the AMNH as lectotype.

Naupactus mimicus differentiates from N. xanthographus because the pronotum is slightly wider and more rugose, the elytra are shorter and with smaller apical tubercles, the denticles of the front tibiae are larger, the corbel plate of the hind tibiae is narrower, the nodulus of the spermatheca is slightly longer, the apex of the penis is more truncate between the lateral points and slightly longer relative to its penis apodemes, and the ostium is also longer.

The types of N. mimicus (Santa Catarina) and N. justus (Paraná) are uniformly brown, with a contrasting white stripe along the suture of elytra and without other white stripes visible from dorsal view ( Figure 1g, h ). In other specimens from Santa Catarina the vestiture is greyish, with less contrasting white stripe along suture, but with distinct white stripes along 3° and 5° intervals, and the distal half of the lateral stripe visible from dorsal view ( Figure 1i ). This pattern is similar to that of the Brazilian variety of N. xanthographus ( Figure 1c ).

Figures

Figure 1. Habitus, dorsal views. (a) Naupactus xanthographus, female; (b) N. xanthographus, male; (c) N. xanthographus, variety, female; (d) N. dissimilis, female; (e) N. dissimilis, variety, female; (f) N. navicularis, female; (g) N. mimicus, female; (h) N. mimicus, male; (i) N. mimicus, variety, female.

Figure 3. Female genitalia. Sternite VIII. (a) Naupactus xanthographus; (b) N. marvaldiae. Ovipositor. (c) N. xanthographus; (d) N. marvaldiae. Spermathecae. (e) N. xanthographus; (f) N. dissimilis; (g) N. navicularis; (h) N. mimicus; (i) N. dissimulator; (j) N. marvaldiae.

Figure 4. Male genitalia. Aedeagi, ventral and lateral views. (a, b) N. xanthographus; (c, d) N. dissimilis; (e, f) N. navicularis; (g, h), N. mimicus; (i, j) N. dissimulator; (k, l) N. marvaldiae.

Figure 5. Maps of middle South America. (a–c) Geographic distributions of the six species of the Naupactus xanthographus species group. (a) N. xanthographus (red circles) and N. mimicus (green triangles); (b) N. dissimilis (green stars) and N. navicularis (red squares); (c) N. dissimulator (yellow circles) and N. marvaldiae (red triangles). Symbols on the maps indicate the localities mentioned under material studied for each species. (d), Biogeographic provinces sensu Morrone (2014), inhabited by the six species of the N. xanthographus species group. Abbreviations: Ar, Araucaria Forest; At, Atlantic Forest; Ce, Cerrado; Ch, Chaco; Mo, Monte; Pa, Pampa; Pr, Paraná Forest; Yu, Yungas.