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Rediscovery of Nuvol umbrosus Navás (Neuroptera, Chrysopidae, Leucochrysini): a redescription and discussion.

Tauber CA, Sosa F - Zookeys (2015)

Bottom Line: Unique aspects of the wing venation and the unusual pattern of banding on the wings support the retention of Nuvol as a valid genus within the Leucochrysini.These differences may indicate the presence of two distinct, geographically separated species within the genus.However, largely because we do not know the sexes of the earlier specimens, we are treating the differences discovered in the two female specimens as expressions of intraspecific variation.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Entomology, Comstock Hall, Cornell University, Ithaca, NY 14853 and Department of Entomology & Nematology, University of California, Davis, CA 95616, U.S.A.

ABSTRACT
The monotypic leucochrysine genus Nuvol was previously known from three specimens of Nuvol umbrosus Navás, collected in the Atlantic Forest region of Brazil. For many years these specimens have been missing, and the genus has remained without a modern description. Here, the species is redescribed based on two newly discovered specimens (females) from the Amazonian region. The female terminalia are relatively simple, except for the subgenitale, which is enlarged, folded into two sections, and heavily sclerotized. Unique aspects of the wing venation and the unusual pattern of banding on the wings support the retention of Nuvol as a valid genus within the Leucochrysini. There are differences between the Amazonian specimens studied here and the earlier descriptions based on specimens from the Atlantic Forest. These differences may indicate the presence of two distinct, geographically separated species within the genus. However, largely because we do not know the sexes of the earlier specimens, we are treating the differences discovered in the two female specimens as expressions of intraspecific variation.

No MeSH data available.


Nuvolumbrosus Navás adult: a habitus, lateral b antennomeres ~ 1/3 distance from base of antenna c mesotarsal claw (Brazil, Rondônia, CAT).
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Figure 1: Nuvolumbrosus Navás adult: a habitus, lateral b antennomeres ~ 1/3 distance from base of antenna c mesotarsal claw (Brazil, Rondônia, CAT).

Mentions: General (Fig. 1): Body slender, yellowish or greenish brown, with elongate, slender antennae typical of leucochrysines, wings hyaline, marked with conspicuous brown to golden bands. Head (Figs 1, 2a, b, 3): Vertex yellowish green, with light reddish markings laterally, along eyes; surface slightly rough, somewhat raised posteriorly. Frons, clypeus white with lateral margins dark red; gena dark red. Labial palpus, maxillary palpus cream colored, without marks. Antenna cream colored, without markings. Scape elongate, relatively large, close mesally; flagellar segments (beyond basal section of flagellum) elongate, each with four swirls of robust, acute setae (Fig. 1b). Measurements: head width (dorsal) 1.7 mm, ratio of head width to eye width 2.0; distance between eyes (frontal) 0.78 mm; distance between tentorial pits 0.57 mm; length midantenna to midway between tentorial pits 0.53 mm; antenna length 31-35 mm; scape length 0.48 mm, width, 0.38 mm; basal two flagellomeres 0.1 mm long, 0.1 mm wide; flagellomeres at 1/3 distance to antennal tip 0.21 mm long, 0.07 mm wide. Thorax (Fig. 3c, d): Prothorax slightly wider than long (length 0.92 mm, width 1.27 mm), yellowish green mesally, with broad, red to brown longitudinal bands laterally, with elongate, golden setae laterally. Mesothorax, metathorax mostly yellowish green mesally, brown laterally, with fine golden setae dorsolaterally. Legs pale, without markings, with numerous light brown to amber setae; tarsal claws with broad, dilated base, deep narrow cleft (Fig. 1c).


Rediscovery of Nuvol umbrosus Navás (Neuroptera, Chrysopidae, Leucochrysini): a redescription and discussion.

Tauber CA, Sosa F - Zookeys (2015)

Nuvolumbrosus Navás adult: a habitus, lateral b antennomeres ~ 1/3 distance from base of antenna c mesotarsal claw (Brazil, Rondônia, CAT).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591607&req=5

Figure 1: Nuvolumbrosus Navás adult: a habitus, lateral b antennomeres ~ 1/3 distance from base of antenna c mesotarsal claw (Brazil, Rondônia, CAT).
Mentions: General (Fig. 1): Body slender, yellowish or greenish brown, with elongate, slender antennae typical of leucochrysines, wings hyaline, marked with conspicuous brown to golden bands. Head (Figs 1, 2a, b, 3): Vertex yellowish green, with light reddish markings laterally, along eyes; surface slightly rough, somewhat raised posteriorly. Frons, clypeus white with lateral margins dark red; gena dark red. Labial palpus, maxillary palpus cream colored, without marks. Antenna cream colored, without markings. Scape elongate, relatively large, close mesally; flagellar segments (beyond basal section of flagellum) elongate, each with four swirls of robust, acute setae (Fig. 1b). Measurements: head width (dorsal) 1.7 mm, ratio of head width to eye width 2.0; distance between eyes (frontal) 0.78 mm; distance between tentorial pits 0.57 mm; length midantenna to midway between tentorial pits 0.53 mm; antenna length 31-35 mm; scape length 0.48 mm, width, 0.38 mm; basal two flagellomeres 0.1 mm long, 0.1 mm wide; flagellomeres at 1/3 distance to antennal tip 0.21 mm long, 0.07 mm wide. Thorax (Fig. 3c, d): Prothorax slightly wider than long (length 0.92 mm, width 1.27 mm), yellowish green mesally, with broad, red to brown longitudinal bands laterally, with elongate, golden setae laterally. Mesothorax, metathorax mostly yellowish green mesally, brown laterally, with fine golden setae dorsolaterally. Legs pale, without markings, with numerous light brown to amber setae; tarsal claws with broad, dilated base, deep narrow cleft (Fig. 1c).

Bottom Line: Unique aspects of the wing venation and the unusual pattern of banding on the wings support the retention of Nuvol as a valid genus within the Leucochrysini.These differences may indicate the presence of two distinct, geographically separated species within the genus.However, largely because we do not know the sexes of the earlier specimens, we are treating the differences discovered in the two female specimens as expressions of intraspecific variation.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Entomology, Comstock Hall, Cornell University, Ithaca, NY 14853 and Department of Entomology & Nematology, University of California, Davis, CA 95616, U.S.A.

ABSTRACT
The monotypic leucochrysine genus Nuvol was previously known from three specimens of Nuvol umbrosus Navás, collected in the Atlantic Forest region of Brazil. For many years these specimens have been missing, and the genus has remained without a modern description. Here, the species is redescribed based on two newly discovered specimens (females) from the Amazonian region. The female terminalia are relatively simple, except for the subgenitale, which is enlarged, folded into two sections, and heavily sclerotized. Unique aspects of the wing venation and the unusual pattern of banding on the wings support the retention of Nuvol as a valid genus within the Leucochrysini. There are differences between the Amazonian specimens studied here and the earlier descriptions based on specimens from the Atlantic Forest. These differences may indicate the presence of two distinct, geographically separated species within the genus. However, largely because we do not know the sexes of the earlier specimens, we are treating the differences discovered in the two female specimens as expressions of intraspecific variation.

No MeSH data available.