Dinelytron betinho,

Heleodoro, Raphael Aquino & Rafael, Jose Albertino, 2020, Review of the genus Dinelytron Gray (Prisopodidae: Prisopodinae: Prisopodini), with a phylogenetic analysis of the genera of the Prisopodini, including the description of a new genus, Zoologischer Anzeiger 285, pp. 37-80: 44-45

publication ID

http://doi.org/ 10.1016/j.jcz.2020.01.005

DOI

http://doi.org/10.5281/zenodo.3716930

persistent identifier

http://treatment.plazi.org/id/9D0A8794-FFD0-066F-0668-643DB8DAEE4B

treatment provided by

Plazi

scientific name

Dinelytron betinho
status

sp. nov.

Dinelytron betinho  sp. nov.

Fig. 8A-BView Fig.

Examined material. Holotype _ ( Fig. 8A-B, DView Fig): “Viçosa, MG [Minas Gerais], BRASIL, Data 10.xi.1982, Fiuza & Martins [collector], Corrego do Paraíso, Mata da Prefeitura, Armadilha UV [blacklight trap]” ( UFV). 

Paratypes: same data as holotype, except “ 4.xi.1981 ” (1 _ UFV); “ 10.xi.1982 ” (3 _ UFV)  .

Etymology. The species name is dedicated to Alberto Moreira Silva Neto, nicknamed “betinho”.

Diagnosis. Clypeus 4.7 times wider than high ( Fig. 8C-DView Fig). Median vein of tegmina bifurcated in Medial anterior and Medial posterior at base; Medial anterior bifurcated in medial anterior 1 and 2 at approximately half the length of tegmina ( Fig. 8EView Fig). Male subgenital plate with lateral projection at apical margin ( Fig. 9BView Fig). Male genitalia in dorsal view: basal pouch auriform ( Figs. 4View Fig, 5View Fig and 10View Fig). Apex of dorsal left sclerite þ left posterior process ovoid ( Figs. 4View Fig, 5View Fig and 10View Fig). Internal sclerite two times shorter than basal pouch, somewhat reniform ( Fig. 10View Fig).

Description. Body dark brown. Head. Frontal suture conspicuous, forming conspicuous light brown sulcus ( Fig. 8CView Fig); coronal suture conspicuous. Clypeus 4.7 times wider than high, light yellow with light brown spots; medially with inconspicuous depression ( Fig. 8C, DView Fig). Labrum light yellow, asymmetric, with left half slightly longer than right half ( Fig. 8C, DView Fig). Antenna with flagellomere 1 subrectangular, 2.5 times longer than wide and three times longer than flagellomere 2; flagellomere 2 subquadrangular; flagellomere 3 rectangular, two times longer than flagellomere 2. Compound eye globose, light brown with black spots ( Fig. 8CView Fig).

Thorax. Pronotum with median longitudinal sulcus and transversal black spot at apical margin. Mesonotum 2.2 times longer than pronotum, with black spot at basal margin, median longitudinal carina. Coxopleurite rugose, light brown, semi-ellipsoid ( Fig. 8BView Fig). Mesothoracic epimeron smooth, light brown, rounded; mesothoracic episternum rugose, anteriorly light brown, posteriorly dark brown, subtriangular ( Fig. 8BView Fig). Metathoracic pleural region smooth, subtrapezoidal ( Fig. 8BView Fig). Thoracic venter yellow, with dark brown longitudinal medial line from base to apex. Probasisternum trapezoidal, with anterior margin arched, convex. Meso- and meta-basisterna smooth, rectangular, longer than wide, with medial circular sclerite concolor with venter.

Legs. All legs dorsally light brown ( Fig. 8BView Fig), ventrally light yellow, laterally with white setae; apical third of femurs and basal third of tibias with black spots ( Fig.8A, BView Fig). Anterior femur 6 times longer than wide, dorsally with three conspicuous longitudinal parallel carinae ( Fig. 8BView Fig); ventrally smooth. Anterior tibia dorsally setose, with two conspicuous longitudinal carinae; ventrally smooth. Mid femur ventrally with median longitudinal carina and four spines at anterior margin. Posterior femur with three longitudinal parallel carinae dorsally; ventrally with six inconspicuous spines at anterior margin; ventro-posterior margin slightly sinuous, better observed ventrally.

Wings. Tegmina light brown, with rounded apex ( Fig. 8EView Fig). Radial vein subdivided in Radial anterior and Radial posterior at apical third ( Fig. 8EView Fig). Median vein bifurcated in Medial anterior and Medial posterior at base; Medial anterior bifurcated in medial anterior 1 and 2 at approximately half the length of tegmina ( Fig. 8EView Fig). Cubital vein slightly curved. Posterior wing with distal portion of costal area concolor with tegmina; veins of anal area inconspicuous.

Abdomen. Abdominal terga opaque. Terga 1-7 rectangular, longer than wide, with longitudinal medial carinae and sparse granules. Tergum 8 trapezoidal, 1.2 times longer than tergum 9 ( Fig. 9AView Fig). Tergum 9 trapezoidal, with basal margin straight,1.3 times wider than apical margin, which is slightly concave ( Fig.9AView Fig).Tergum 10 two times shorter than Tergum 8, with basal margin concave, lateral margin straight, apical margin convex ( Fig. 9AView Fig). Cercus laterally flattened, with setae ( Fig. 9A, CView Fig). Sterna 1-9 gradually decreasing in length. Sterna 7-9 with conspicuous wide longitudinal medial sulcus ( Fig. 9BView Fig). Sternum 7 rectangular, 1.6 times wider than long with all margins straight ( Fig. 9BView Fig). Sternum 8 rectangular, three times wider than long, with convex basal and lateral margins, sinuous apical margin ( Fig. 9BView Fig). Subgenital plate (sternum 9), rectangular, with basal and lateral margin convex; apical margin concave, laterally with rhomboid projection ( Fig. 9BView Fig). Vomer with slightly sinuous lateral margin, acute and black apex ( Fig. 6CView Fig).

Genitalia ( Figs. 4View Fig, 5View Fig and 10View Fig). Basal pouch auriform. Dorsal left sclerite attached to dorsal wall of genitalia; medial portion of dorsal left sclerite conspicuously arched; apex of dorsal left sclerite þ left posterior process ovoid. Left posterior process conspicuous. Internal sclerite two times shorter than basal pouch, somewhat reniform, in dorsal view seeming to be located underneath the basal pouch. Flagellum present.

Measurements (mm). Body length 34.5-35.2; dorsal head length 1.5-1.7; pronotum 1.4-1.5; mesonotum 1.2-1.3; anterior femur 6.5-6.6; anterior tibia 3.2-3.3; mid femur 3.6; mid tibia 2.4-2.7; posterior femur 6.7; posterior tibia 4.3-4.4.

Type condition. Holotype: left anterior and right posterior legs and left antenna glued to a piece of label paper pinned to the specimen support. Right antenna with approximately half the length missing.

Geographical records. Brazil, Minas Gerais: Viçosa.

Remarks. This species can be easily distinguished from all other Dinelytron  species by the subgenital plate with latero-apical rhomboid projection on the apical margin.