Naupactus navicularis Boheman, 1840

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 : 1573-1575

Naupactus navicularis Boheman

( Figures 1f , 3g , 4 (e, f), 5b)

Naupactus navicularis Boheman 1840, p. 23 . Type material: female labelled as typus, Brazil, at the NHRS, herein designated as lectotype . Body length: 11.5 mm.

Naupactus navicularis: von Dalla Torre et al. 1936, p. 21 (catalogue); Blackwelder 1947, p. 794 (checklist); Wibmer and O ’ Brien 1986, p. 60 (checklist).

Redescription. Female ( Figure 1f )

Body length 11 – 14 mm. Vestiture brown with pinkish iridescence and pattern of white or white-pinkish stripes along pronotum and elytra: pronotum with two pairs of longitudinal whitish stripes, one on disc and another on margins; elytral suture pinkish-white, anterior third of 5° interval, middle half of 3° interval, and 7 – 8° intervals whitish, the latter stripes interrupted on middle-length and obliquely ascending towards 4 – 5° intervals, on posterior third. Rostrum 1.05 – 1.20× as long as wide; lateral carinae strong and slightly convergent towards forehead. Eyes round, convex. Scape not reaching anterior margin of pronotum; funicular article 2 about twice as long as article 1. Pronotum subcylindrical, about 1.10× as wide as long; sides straight, slightly divergent towards base; disc flat, slightly rugose. Elytra navicular, very thin in lateral view, 1.70 – 1.75× as long as wide; sides moderately curved and abruptly narrowed in posterior third; apical tubercles small; intervals about twice as wide as punctures of striae. Front femora 2.75 – 2.95× as long as wide and 1.20 – 1.30× as wide as hind femora. Front tibiae with large mucro and 6 – 8 small denticles along 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 setae on posterior third, on external side of baculi. Spermatheca ( Figure 3g ) subcylindrical, small (0.55 mm); nodulus and ramus indistinct; spermathecal duct 3 – 4× as long as spermatheca.

Male

Body length 10 – 11 mm. Smaller and more slender than females. Pronotum about as wide as long. Elytra about twice as long as wide. Ventrite 5 about 1.10× as long as ventrite 2, apex curved.

Male genitalia ( Figure 4e, f )

Body of penis slightly longer than penis apodemes; apex acute, lacking lateral point; ostium about twice as long as wide; endophallus with distinct spiny area but lacking internal pieces.

Other material examined

ARGENTINA. Misiones. Santa María, October 1944, M. Viana (1f MLP); no loc., Richter (2f MLP). BRAZIL. Minas Gerais: Poços de Caldas, February 1958 (1f MZSP); Santa Rita de Caldas, Pe Pereira, December 1953 (1f DZUP). Paraná: Castro, 1919 , ED Jones (5f BMNH); Cachoeirinha, February 1953 (1f MZSP); Curitiba, 19 November 1985, TJ Henry (1m USNM); idem, December 1937 (3f MZSP); Guarapuava, November 1956, M Schneider (1f MZSP); Ponta Grossa, January 1952 (1f DZUP); idem, December 1937 (1f CEIOC); idem, December 1968, CA Camargo (2f MZSP); idem, September 1944, Pedreira, guarda chuva (1f DZUP); Rolândia, November 1949, Pohl (1f MZSP); São José de Pinhais, 40 km S Curitiba, 22 November 1985, TJ Henry (2f USNM). Rio de Janeiro: Barra de Pirahy, February 1934 (1f MZSP). Rio Grande do Sul: Villa Oliva, 18 February 1947, P Buck (3f 2m CEIOC). Santa Catarina : Joinville, February 1954, Dirings. (3f MZSP); Mafra, 800 m (1f DZUP); Mafra, 26° S, 50° W, December 1928, 800m (1f BMNH); Timbó, April 1964, Dirings. (1f MZSP). São Paulo: Campos do Jordão, 10 December 1961, J Halik (1f USNM); idem, 4 January 1960, J Halik (1f USNM); idem, 4 February 1963, J Halik (1f USNM); idem, 10 September 1964, J Halik; idem, 17 April 1962, J Halik (1f USNM); Cantareira, April 1967, J Halik (2f MZSP); Ipiranga, December 1936 (1f MZSP); Cerqueira Cesar, January 1899, E Gounelle (1f BMNH); Itapetininga, on citrus, Citrovita, J Guedes (1f MZSP); Piracicaba, January 2000, J Guedes, on orange (6f MLP); Santana, 10 November 1961, J Halik (1m USNM); idem, 10 May 1960, J Halik (1f USNM); idem, 4 November 1962, J Halik (1f USNM); idem, 17 April 1962, J Halik (1f USNM); idem, 13 January 1963, J Halik (1f MZSP); São Joaquim, 1400m, 28° 15′ S, 49° 51 ʹ W, F Plaumann (1f MZSP); São Paulo, 26 November 1965, VN Alin (1f USNM); Val du Rio Pardo, December 1898 (4f 1m MNHN); Xavantes, 25 – 31 January 1974, Reichard (1m MZSP); no loc. (1f MNHN). PARAGUAY. Itapúa: Hohenau (1m MNHN).

Geographic distribution ( Figure 5b, d )

Naupactus navicularis is distributed in the Atlantic, Araucaria and Paraná forests, and reaches the northernmost distribution of the N. xanthographus species group. It occurs in north-eastern Argentina (Misiones) , Brazil (Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina and São Paulo) and Paraguay (Itapúa) . Paraguay is a new country record.

Host plants

This species is harmful for Citrus in Brazil (São Paulo), especially oranges ( Lanteri et al. 2002b; Guedes Carús et al. 2005).

Remarks

Boheman (1840) did not specify the number of specimens of the type series. We consider that the only specimen of N. navicularis deposited at the NHRS, labelled as typus, is a syntype. In this paper we designate this syntype as lectotype.

Naupactus navicularis distinguishes from N. xanthographus because the elytra are thinner in lateral view, more pointed at apex and with smaller tubercles; the hind tibiae of males do not bear denticles, and the apex of the body of penis is subacute instead of arrow-pointed. Females are more common than males throughout the range of this species. We have not seen distinct geographic variation.

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.