Merobruchus machadoi
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publication ID |
https://doi.org/ 10.11646/zootaxa.4078.1.25 |
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publication LSID |
lsid:zoobank.org:pub:78037DEE-A4F0-4E28-8135-EFD57552C3D0 |
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DOI |
https://doi.org/10.5281/zenodo.6057384 |
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persistent identifier |
https://treatment.plazi.org/id/039487A5-0179-FF80-FF3B-F8B16757FBCD |
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treatment provided by |
Plazi |
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scientific name |
Merobruchus machadoi |
| status |
sp. nov. |
Merobruchus View in CoL machadoI sp. nov.
( Figures 19 View FIGURES 18 – 26 , 35, 39 View FIGURES 35 – 40 , 43–44 View FIGURES 41 – 46 , 66 View FIGURES 57 – 68 , 90 View FIGURES 81 – 92 , 115 View FIGURES 114 – 118 , 140 View FIGURES 140 – 145 )
Material examined. Holotype male deposited in DZUP: (1) “ Brasil –RS, Santa Maria,/ 29°41’S 53°48’W 141m,/ V/2011 D. B. Araldi col.” (2) “Em frutos de/ Parapiptadenia rigida ”. Paratypes. 69 deposited in follow collections: 40 at DZUP, 5 males and 4 females: (1) “ Brasil –RS, Santa Maria,/29˚41’”S 53˚48’”W 141m,/ V/2011 D. B. Araldi col.” (2) “Em frutos de/ Parapiptadenia rigida ”. 2 females and 2 males: (1) “ Brasil –RS–Santa Maria/ 12.IX.2012 J. Garlet” (2) “Larva consumindo sementes de/ Parapiptadenia rigida ”. 1 male: (1) “Porto Alegre, RS/ I. Marinheiros/ 27.X.1998 /L. Moura col.” (2) “Col. MCN/161.140”. 1 male: (1) “JUNDIAÍ DO SUL –PR/Fazenda Monte verde/ BRASIL 03.XII.1986 /Lev. Ent. PROFAUPAR/LÂMPADA”. 1 male and 2 females: (1) “ Brasil –SP–Botucatu Fazenda/Experimental Edgardia–FCA–/ UNESP 22˚48’S 48˚24’W 577m / 29.V.2009 L.M.S. Rodrigues” (2) “Larva consumindo semente de/ Parapiptadenia rigida ”. 8 males and 12 females: (1) “Santa Maria, RS/ 26/V/2012 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 2 females: (1) “Xanxerê, SC/ 25/VI/2013 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 9 at USNM, 1 female and 2 males: (1) “ Brasil –RS–Santa Maria/ 12.IX.2012 J. Garlet” (2) “Larva consumindo sementes de/ Parapiptadenia rigida ”. 1 female at USNM: (1) “ Brasil –SP–Botucatu Fazenda/Experimental Edgardia–FCA–/ UNESP 22˚48’S 48˚24’W 577m / 29.V.2009 L.M.S. Rodrigues” (2) “Larva consumindo semente de/ Parapiptadenia rigida ”. 2 females and 2 males: (1) “Santa Maria, RS/ 26/V/2012 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 1 female: (1) “Xanxerê, SC/ 25/VI/2013 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 6 at TAMU, 1 female: (1) “ Brasil –SP–Botucatu Fazenda/Experimental Edgardia–FCA–/ UNESP 22˚48’S 48˚24’W 577m / 29.V.2009 L.M.S. Rodrigues” (2) “Larva consumindo semente de/ Parapiptadenia rigida ”. 2 females and 2 males: (1) “Santa Maria, RS/ 26/V/2012 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 1 female: (1) “Xanxerê, SC/ 25/VI/2013 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 5 at FSCA, 2 females and 2 males: (1) “Santa Maria, RS/ 26/V/2012 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 1 female: (1) “Xanxerê, SC/ 25/VI/2013 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 4 at MNRJ, 2 females and 2 males: (1) “Santa Maria, RS/ 26/V/2012 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angicovermelho)”. 5 at MZSP 2 females and 2 males: (1) “Santa Maria, RS/ 26/V/2012 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”. 1 female: (1) “Xanxerê, SC/ 25/VI/2013 / Garlet, J. col.” (2) “ Parapiptadenia rigida / (Benth.)/ (Angico-vermelho)”.
Description, holotype. Body length: 2.47 mm; width: 1.48 mm.
Integument. Dorsum: entirely dark brown ( Fig. 19 View FIGURES 18 – 26 ). Antenna: antennomeres 1–6 and 11 brown, 7–10 dark brown ( Fig. 35 View FIGURES 35 – 40 ). Ventral region: predominantly dark brown, except anterior and middle legs pale brown and brown ( Fig. 35 View FIGURES 35 – 40 ). Pygidium : mainly dark brown ( Figs 66 View FIGURES 57 – 68 , 90 View FIGURES 81 – 92 ).
Pubescence. Dorsum: sparse pubescence, yellowish gray and brown not forming conspicuous pattern ( Fig. 19 View FIGURES 18 – 26 ); pronotum with pubescence denser on lateral areas than on median region; scutellum white ( Fig. 19 View FIGURES 18 – 26 ). Ventral region: mainly yellowish gray; abdominal ventrites uniformly pubescent ( Fig. 35 View FIGURES 35 – 40 ). Pygidium : yellowish gray forming sparse median patch and dense longitudinal strip from base to apical third ( Fig. 90 View FIGURES 81 – 92 ), interrupted in middle.
Body. Ovate body, widest behind humeri. Head ( Fig. 2 View FIGURES 1 – 8 ): without occipital sulcus ( Fig. 39 View FIGURES 35 – 40 ); ocular index 3.42; ocular sinus 0.14 mm; postocular lobe very narrow ( Fig. 35 View FIGURES 35 – 40 ); frons slightly elevated, inconspicuous frontal carina ( Figs 39 View FIGURES 35 – 40 ); frontoclypeal carina present. Antenna: slightly clavate from antennomere 5 ( Fig. 35 View FIGURES 35 – 40 ); 6–10 wider than long; 11 subelliptic. Pronotum: lateral margins sinuate in dorsal view ( Fig. 19 View FIGURES 18 – 26 ); basal lobe with straight margin; median gibbosity absent ( Fig. 19 View FIGURES 18 – 26 , 35 View FIGURES 35 – 40 ); posterior region without median longitudinal sulcus ( Fig. 19 View FIGURES 18 – 26 ); lateral gibbosities absent, only slightly depressed on lateral corners ( Fig. 19 View FIGURES 18 – 26 ); coarse punctation all over pronotum ( Fig. 19 View FIGURES 18 – 26 ); lateral carina short, reaching at most slightly over half of pronotum length. Scutellum: wider than long ( Fig. 19 View FIGURES 18 – 26 ), bidentate. Elytron: humeral gibbosity slightly conspicuous ( Figs 4 View FIGURES 1 – 8 , 19 View FIGURES 18 – 26 ); striae regular in course, visibly impressed, free apically ( Fig. 43 View FIGURES 41 – 46 ); striae 3 and 4 with basal denticle near margin of the elytron on slightly elevated gibbosity ( Fig. 44 View FIGURES 41 – 46 ); stria 5 without basal denticle ( Fig. 44 View FIGURES 41 – 46 ). Mesoventrite: mesoventral process rounded apically ( Fig. 47, 48 View FIGURES 47 – 48 ); postmesocoxal sulcus pointed, not following the curvature of the coxa, ( Fig. 48 View FIGURES 47 – 48 ). Metaventrite: not protuberant in lateral view ( Fig. 35 View FIGURES 35 – 40 ); metanepisternum with coarse punctation moderately distributed; dorsal carina complete, limiting dorsal and posterior margins. Hind leg: femur in lateral view not projects beyond pygidium ( Fig. 35 View FIGURES 35 – 40 ); pecten with 4 teeth; internal margin without denticles at anterior region, before pecten. Tibia, external face microserrate ( Fig. 3 View FIGURES 1 – 8 ); lateroventral carina complete; mucro shorter than width of tibia apically ( Figs 3 View FIGURES 1 – 8 , 35 View FIGURES 35 – 40 ); coronal tooth present ( Fig. 35 View FIGURES 35 – 40 ); curvature of the tibia at external margin reaching half length of tibia. Abdomen: last ventrite, median apical border with strong emargination, with very short lateral projections ( Fig. 54 View FIGURES 49 – 56 ). Pygidium : convex in apical 2/ 3 in lateral view; without median lateral tubercles; apical margin truncate.
Male genitalia (based on paratype). Median lobe ( Fig. 115 View FIGURES 114 – 118 ): length about 3.5 x the most width at base of ventral valve. Ventral valve subrectangular-arcuate, wider than long and as wide as the apex of median lobe, slightly emarginate at apex. Apical region with dense denticles; a pair of small thornlike sclerites with large base, thin and slightly curved apex. Median region with Y-shaped sclerite, upper stem straight, paired stems straight; a pair of large thornlike sclerites, large base with short and curved apex. Basal region with dense spines and sparse denticles. Basal hood not bilobate, 1.5 x wider than largest width at base of ventral valve. Tegmen ( Fig. 140 View FIGURES 140 – 145 ): lateral lobes with moderate emargination reaching over half its length; external margins straight, internal concave; rounded at apex; without projections turned toward the ring.
Paratypes, variability. Body length (n = 10): 2.02–2.71 mm; width: 1.36–1.77 mm.
Integument. Dorsum: brown and dark brown or reddish brown and dark brown. Antenna: sometimes entirely brown or with antennomeres 6–10 dark brown. Ventral region: anterior and middle legs sometimes brown. Pygidium : reddish brown with two median longitudinal dark brown trips.
Pubescence. Pygidium : yellowish gray and white ( Fig. 66 View FIGURES 57 – 68 ), dense median longitudinal strip not interrupted in the middle.
Body. Head: ocular index 2.84–3.32; ocular sinus 0.11–0.18 mm ( Fig. 2 View FIGURES 1 – 8 ). Pronotum: posterior region with median longitudinal shallow sulcus. Abdomen: female, last ventrite, median apical border with arcuate emargination, with very short lateral projections ( Fig. 51 View FIGURES 49 – 56 ). Pygidium : apical 2/3 more strongly convex in female; apical margin rounded in female.
Male genitalia. Median lobe: Apical region, pair of thornlike sclerites with straight apex. Median region, Yshaped sclerite, paired stems slightly curved.
Female. Abdomen: female, last ventrite, median apical border with arcuate emargination, with very short lateral projections ( Fig. 51 View FIGURES 49 – 56 ). Pygidium : apical 2/3 more strongly convex; apical margin rounded.
Diagnosis. This species differs from M. paquetae mainly by the colour dark brown of the integument on dorsum ( Figs 19, 21 View FIGURES 18 – 26 ) and the apical pair of sclerites in male genitalia ( Figs 115, 117–118 View FIGURES 114 – 118 ).
Distribution. Brazil (São Paulo, Paraná, Santa Catarina, Rio Grande do Sul).
Host plant. Fabaceae , Mimosoideae , Mimoseae : Parapiptadenia rigida (Benth.) Brenan. This host plant is for the first time recorded for Bruchinae .
Etymology. The species name is in honor of the 80th Birthday of eminent researcher Prof. Dr. Angelo Barbosa Monteiro Machado, a remarkable Brazilian Odonatologist.
| DZUP |
Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure |
| USNM |
Smithsonian Institution, National Museum of Natural History |
| FSCA |
Florida State Collection of Arthropods, The Museum of Entomology |
| MNRJ |
Museu Nacional/Universidade Federal de Rio de Janeiro |
| MZSP |
Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.