Naupactus marvaldiae, Lanteri & del Río, 2017

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 : 1580-1582

Naupactus marvaldiae sp. nov.

( Figures 2 (c, d), 3(b, d, j), 4(k, l), 5c)

Type material

Holotype female, with the following labels [ BRASIL / Joinville /Sta. Catarina/ Dirings], [ MZSP] label green, [HOLOTYPE / Naupactus marvaldiae /Lanteri & del Río, 2017], label red. Body length: 10 mm.

Paratype. Allotype male with the following labels [ BRASIL / Rio Vermelho /Sta. Catarina/ III-1960 Dirings], [ MZSP] label green, [ALLOTYPE / Naupactus marvaldiae /Lanteri & del Río, 2017], label red. Body length: 9 mm .

Holotype female ( Figure 2c )

Body length 10 mm. Integument light brown, slightly sclerotized, loosely covered with sparse, round scales and short recumbent setae. Vestiture light brown with characteristic pattern of white stripes on pronotum and elytra. Pronotum with slender white stripe along midline and pair of marginal stripes interrupted on middle; elytra with two slender white stripes, one starting at humeri and curved towards anterior third of 6° interval and another extended along 7 – 8° intervals and curved towards posterior half of 2 – 3° intervals; middle half of 3° interval without white maculae; venter denuded along midline. Rostrum about as long as wide at apex; epistome large, sparsely covered with very small round scales; lateral carinae strong, denuded, slightly convergent towards forehead; rostral sulcus slender, reaching level of posterior margin of eyes; setae forming semicircles on each side of anterior half of sulcus and subparallel on posterior half; forehead about 1.40× as wide as apex of rostrum. Eyes round, convex. Antennae slender, setose; scape reaching about anterior margin of pronotum; funicular article 2, about 1.80× as long as article 1; articles 3 – 7, about 3× as long as wide at apex; club about 3× as long as wide. Pronotum subcylindrical, 1.30× as wide as long; disc flat, rugose (with confluent large punctures); sides slightly curved. Scutellum sparsely squamose. Elytra oval, about 1.36× as long as wide, 2.50× as long as pronotum, and 1.40× as wide as pronotum; apical margin thickened; humeri absent; disc slightly convex and slightly elevated regarding disc of pronotum; intervals flat, about twice as wide as punctures of striae; apex with pair of large tubercles at extreme of 3° interval. Metathoracic wings vestigial. Legs. Front coxae not separated from each other, twice as close to anterior than posterior margin of pronotum; front femora about 2.5× as long as wide and 1.5× as wide as hind femora; front tibiae with large, acute mucro and 8 – 10 large denticles on inner side; middle tibiae with small mucro and stiff setae; hind tibiae lacking mucro and denticles; corbel of hind tibiae lacking; dorsal comb about as long as apical comb. Ventrite 5 slightly shorter than ventrite 2.

Female genitalia

Sternite VIII ( Figure 3b ) subrhomboidal, with V-shaped sclerotization near base and apical tuft of long setae; spiculum ventral about 3× as long as VIII sternite. Ovipositor ( Figure 3d ) about ¾ as long as abdomen, with two lines of 4 – 5 long setae on posterior third, on external side of baculi; distal coxites slightly sclerotized, styli long, laterodorsally directed. Spermatheca ( Figure 3j ) subcylindrical, large (0.8 mm); nodulus tubular, long; ramus incipient; cornu strongly curved, about as long as spermatheca; spermathecal duct sclerotized, not spiral form, very thin, about 3× as long as spermatheca.

Allotype male ( Figure 2d )

Body length 9 mm. Smaller and more slender than female. Rostrum 1.15× as long as wide at apex. Forehead 1.35× as wide as rostrum at apex. Pronotum about 1.20× as wide as long. Elytra 1.40× as long as wide, 2.45× as long as pronotum, and 1.35× as wide as pronotum. Ventrite 5 about as long as ventrite 2.

Male genitalia ( Figure 4k, l )

Body of penis about twice as long as penis apodemes; apex slightly acute, lateral points vanished, flat in lateral view; ostium about 4× as long as wide; endophallus with spiny area and large, strongly sclerotized internal armature, consisted on a pyriform central piece and two lateral wing-shaped pieces.

Other material examined

More than 100 paratypes deposited at the MZSP, MNRJ and MLP, from the following locations: ARGENTINA . Misiones. no loc., Richter (2m MLP) . BRAZIL. Santa Catarina. Blumenau , 2 – 5 December 1975, Exp . Dep . Zool. (1f MZSP) ; Corupá, Alto da Serra, Estrada São Bento , 3 May 1967, Biasi (2f MZSP); Corupá, October 1951, August 1953, October 1953, November 1953, January 1954, A Maller (2f 5m MNRJ); Joinville, January 1923 (1f MNRJ); Joinville, December 1954, April 1955, October 1955, January 1956, July 1959, Dirings. (20f 5m MZSP) ; Rio Natal , March 1957, Dirings. (5f 5m MZSP) ; Rio Vermelho, January 1945, November 1948, January 1950, March 1950, January 1952, January 1953, March 1954, December 1955, December 1956, January 1958, March 1960, December 1961, January 1962, March 1962, February 1963, March 1963, March 1964 (100f 50m MZSP); São Bento, March 1952, B Pohl (1f MZSP); idem, January 1923 (1f MNRJ); Timbó , February 1956, November 1956, December 1956, March 1961, December 1961, February 1962, May 1962, May 1963, February 1964, Dirings . (20f 10m MZSP) .

Geographic distribution ( Figure 5c, d )

Naupactus marvaldiae occurs mainly in the southern Atlantic forest. It is distributed in southern Brazil (Santa Catarina) and in Argentina (Misiones) .

Etymology

The name Naupactus marvaldiae is dedicated to the outstanding weevil expert Adriana E. Marvaldi, from the Museo de La Plata, Argentina.

Remarks

The new species differentiates from N. dissimulator because it is usually smaller (8 – 10 mm long), with less sclerotized integument, broader front femora and larger denticles on the inner margin of the front tibiae. The elytra are shorter, broader and more narrowed towards apex; the striae show larger punctures, and the white marginal stripes of 7 – 8° intervals are obliquely extended on disc and reach the posterior third of 2 – 3° intervals. The pronotum of the males shows less curved flanks and is narrower than in N. dissimulator ; the apical tubercles are well-developed and the white stripe along suture is indistinct (in males of N. dissimulator this stripe is always distinct). The spermathecal duct of N. marvaldiae is slightly shorter than in N. dissimulator and the apex of the penis is not waved on its sides.

Some specimens of N. marvaldiae have been misidentified in entomological collections as Naupactus curtus Boheman 1833 , probably because of the short elytra and the similar colour pattern. The latter is easily distinguished because it lacks tubercles in the apex of elytra; the pronotum is smooth instead of rugose and very convex, particularly in males; the front tibiae are longer, strongly curved near apex, and bear a hook-like mucro and large denticles on inner margin.

Figures

Figure 2. Habitus, dorsal views. (a) Naupactus dissimulator, female; (b) N. dissimulator, male; (c) N. marvaldiae, holotype female; (d), N. marvaldiae, allotype male.

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.