Sennius nappi Ribeiro-Costa and Reynaud 1998

Viana, Jéssica Herzog & Ribeiro-Costa, Cibele Stramare, 2013, Bruchines (Coleoptera: Chrysomelidae) associated with Senna neglecta (Vogel) H. S. Irwin and Barneby (Fabaceae: Caesalpinioideae): a new host plant for the subfamily, Journal of Natural History 48 (1 - 2), pp. 57-85: 76-78

publication ID

http://doi.org/ 10.1080/00222933.2013.791882

DOI

http://doi.org/10.5281/zenodo.4743028

persistent identifier

http://treatment.plazi.org/id/03B287A3-FFD3-5238-FEAA-738006E3EAEB

treatment provided by

Carolina

scientific name

Sennius nappi Ribeiro-Costa and Reynaud 1998
status

 

Sennius nappi Ribeiro-Costa and Reynaud 1998  

( Figure 5 View Figure 5 A–I)

Sennius nappi Ribeiro-Costa and Reynaud 1998, p. 249   (original description, distribution, type, figures, host); Caron et al. 2004, p. 5 (egg description); Sari et al. 2005, pp. 169–174 (biology); Sari and Ribeiro-Costa 2005, pp. 521–525 (biology).

Diagnosis

Dimension. Length (Pronotum–elytra) 1.80–2.84 mm. Width 1.08–1.72 mm.

Integument colour. Head black, labrum rarely lighter; first four segments of antenna red-orange, seventh to apical dark brown to black ( Figure 5B View Figure 5 ). Prothorax, scutellum, pygidium and ventral region of the body black ( Figures 5A, B, D View Figure 5 ). Black elytron with transverse submedian macula, irregular, red-orange to dark brown, extending from third or fourth to eighth or ninth striae interval, sometimes extending more darkly to apex region, elytra rarely without macula ( Figure 5A View Figure 5 ). Anterior and middle legs black or dark brown apically; black hind legs ( Figure 5B View Figure 5 ).

Pubescence. Head with dense tuft of white pubescence posterior to postocular lobe, moderately dense on postocular lobe and scattered on rest of head. Labrum with scattered golden pubescence, denser and forming a line near the apex ( Figure 5C View Figure 5 ). Pronotum with brown and golden sparse pubescence and white pubescence denser in short oblique lateral bands, and usually in the antescutellar region ( Figure 5A View Figure 5 ). Scutellum with dense white pubescence ( Figure 5A View Figure 5 ). Elytron with moderately dense white pubescence forming a submedian transversal and irregular macula, extending from second or third to tenth striae interval, generally covering the orange-red macula on the integument; remainder of elytra with sparse brown pubescence ( Figure 5A View Figure 5 ). Ventral surface with white pubescence denser at base of mesepimeron, at posterior margin of metepisternum, at distal region of hind coxa, and at base of first abdominal ventrite ( Figure 5B View Figure 5 ). Pygidium with moderately dense white pubescence at the anterior midline, sometimes extending to the middle of pygidium ( Figure 5D View Figure 5 ).

Head with coarse and dense punctuation except at midline of frons and labrum; frons slightly convex, transverse sulcus slightly evident; ocular sinus deep, more than half an eye length ( Figure 5C View Figure 5 ). First to fourth segments of the antenna moniliform to filiform, fifth to tenth wider than long, eleventh globular and pointed apically ( Figure 5B View Figure 5 ). Pronotum moderately convex ( Figure 5B View Figure 5 ), disc sulcate at basal lobe ( Figure 5A View Figure 5 ). Scutellum subquadrate, slightly wider than long ( Figure 5A View Figure 5 ). Base of second and third striae of elytron with denticles ( Figure 5E View Figure 5 ). Hind femur on ventral margin with a slightly prominent microserrate tooth (0.01–0.06 mm) ( Figure 5F View Figure 5 ). Hind tibia with lateroventral carina that extends more than half of its length ( Figure 5G View Figure 5 ), lateral, dorsomesal and ventral carinae long, ending near coronal denticles ( Figure 5F, G View Figure 5 ); mucro short, about 1.3 times the opposite coronal denticle ( Figure 5F, G View Figure 5 ). Last abdominal ventrite of male emarginate at middle, rounded in female. Pygidium not concealed by elytra, subtriangular, lateral margins slightly curved, apex rounded in male, more acuminate in female ( Figure 5B, D View Figure 5 ).

Male genitalia. Median lobe about five times longer than its width at median region, apex slightly expanded; ventral valve with rounded projection apically, lateral margins convex; hinge sclerites moderately curved, expanded at base and apex. Trilobate internal sac, without spicules at basal region near base of valve, submedian region with dense group of short spicules apparently forming three longitudinal clusters; laterals of subapical region of internal sac with two clusters of large spicules; apical region with spicules on lateral lobes and denticles on middle lobe near the gonopore ( Figure 5H View Figure 5 ). Tegmen with lateral lobes separated by deep emargination, about 0.7 times the length of lateral lobes ( Figure 5I View Figure 5 ).

Type material

Holotype, allotype and paratypes of Sennius nappi   deposited in DZUP with the labels: “Curitiba-PR | 22-XI-95 | Ribeiro-Costa,” “Host | Senna   | multijuga   ”. For the recognition of Sennius nappi   , the type material of Sennius transversesignatus   was studied.

Additional specimens

BRAZIL: Mato Grosso: Pirizal: Faz. Retiro Novo, Pantanal de Poconé , N. Sra. do Livramento, 28 / III / [20]04, L.D. Battirola col., in Vochysia divergens   , 1 specimen ( DZUP)   . Mato Grosso do Sul: Dourados : no date, A. Ferraz col., no host plant, 1 specimen ( DZUP)   . Rio de Janeiro: Itatiaia : P.N. Itatiaia, 19 / VIII / 2008, M. Torres col., in Senna multijuga   , 24 specimens ( DZUP)   . Rio de Janeiro: X / 1957, M. Alvarenga col., no host plant, 1 specimen ( DZUP)   . Teresópolis : P.N. Serra dos Órgãos, VI / 2006, J.H. Viana col., in Senna neglecta var. oligophylla   , 4 specimens ( DZUP)   ; VIII / 2006, same collector and host plant, 2 specimens ( DZUP)   ; 22 / VIII / 2006, same collector and host plant, 29 specimens ( DZUP)   ; 05 / IX / 2006, same collector and host plant, 18 specimens ( DZUP)   ; 21 / IX / 2006, same collector and host plant, 1 specimen ( DZUP)   ; 29 / IX / 2006, same collector and host plant, 2 specimens ( DZUP)   ; 2007, same collector and host plant, 2 specimens ( DZUP)   ; 02 / IV / 2007, same collector and host plant, 1 specimen ( DZUP)   ; 15 / VIII / 2007, same collector and host plant, 6 specimens ( DZUP)   ; 17 / VIII / 2007, same collector and host plant, 1 specimen ( DZUP)   ; 29 / VIII / 2007, same collector and host plant, 1 specimen ( DZUP)   ; 06 / IX / 2007, same collector and host plant, 1 specimen ( DZUP)   ; 12 / IX / 2007, same collector and host plant, 6 specimens ( DZUP)   ; 14 / IX / 2007, same collector and host plant, 4 specimens ( DZUP)   ; 21 / IX / 2007, same collector and host plant, 1 specimen ( DZUP)   ; 26 / IX / 2007, same collector and host plant, 1 specimen ( DZUP)   ; 26 / IX / 2007, same collector and host plant, 1 specimen ( DZUP)   . Paraná: Curitiba : 22 / XI / [19]95, C.S. Ribeiro-Costa col., in Senna multijuga   , 9 specimens ( DZUP)   ; Jardim Botânico , 04 / VIII / 1997, same collector and host plant, 3 specimens ( DZUP)   ; 20 / XI / [20]00, L.T. Sari col., same host plant, 3 specimens ( DZUP)   ; 26 / I / [20]01, same collector and host plant, 3 specimens ( DZUP)   ; Ed. Física – UFPR, 15 / VII / [20]08, K.L. Azevedo col., in Senna neglecta var. neglecta   , 3 specimens ( DZUP)   . Jaguariaíva : 03 / X / [20]03, L.T. Sari col, in Senna rugosa   , 1 specimen ( DZUP)   ; 24 / X / [20]03, same collector and host plant, 1 specimen ( DZUP)   ; 21 / X / [20]03, same collector and host plant, 1 specimen ( DZUP)   . Londrina : 16 / IV / 2003, A. Menezes Jr. col., in Senna   sp., 3 specimens ( DZUP)   ; 10 / VI / 2002, same collector, in S enna occidentalis   , 2 specimens ( DZUP)   ; 22 / VIII / 2003, same collector, in S enna obtusifolia   , 3 specimens ( DZUP)   ; 14 / V / 2002, same collector, in S enna sp., 3 specimens ( DZUP)   . No locality: no date and collector, 1 specimen ( DZUP)   .

Distribution

Brazil (Paraná).

New record – Brazil (Mato Grosso, Mato Grosso do Sul, Rio de Janeiro)  

Host plants

Fabaceae   : Caesalpinioideae   : Senna multijuga   .

New records – Fabaceae   : Caesalpinioideae   : Senna neglecta var. oligophylla   , S. neglecta var. neglecta   , S. rugosa   , S. occidentalis   , S. obtusifolia   .

Note. The plant listed in the additional specimens, Vochysia divergens   , is not listed here because the adult collected was not reared on seeds of this plant, and only plants with record of larvae preying are quoted as host plant.

Discussion

Sennius nappi   differs mainly by its pronotum with short oblique lateral bands of dense white pubescence, and elytron usually with an irregular transverse macula of white pubescence in the submedian region covering a reddish-orange macula that may extend, becoming darker, to the apex of the elytron. Sennius bondari   and Sennius nappi   likewise belong to the abbreviatus   group of Sennius   by sharing many characters mentioned in the “Discussion” section of Sennius bondari   . However, Sennius nappi   is placed in subgroup 1 and is more similar to Sennius transversesignatus   , sharing two major clusters of spicules on each lateral lobe of the internal sac of the male genitalia (a characteristic of subgroup 1) and a black integument, except for a reddish-orange transverse macula on each elytron covered with white pubescence, which can make identification difficult. In Sennius nappi   , the last seven antenna segments are dark brown to black, and there are no tufts of white pubescence near the base of the elytron, whereas in Sennius transversesignatus   all segments are usually light brown and tufts of white pubescence are present. In terms of the male genitalia, Sennius nappi   has lateral clusters of large spicules in the subapical region of the internal sac, whereas in Sennius transversesignatus   these clusters are in the median region. Moreover, Sennius nappi   does not have two moderately dense clusters of large spicules in the apical region of the middle lobe of the internal sac, as in Sennius transversesignatus   .

DZUP

Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Chrysomelidae

Genus

Sennius

Loc

Sennius nappi Ribeiro-Costa and Reynaud 1998

Viana, Jéssica Herzog & Ribeiro-Costa, Cibele Stramare 2013
2013
Loc

Sennius nappi

Ribeiro-Costa and Reynaud 1998: 249
1998