Dinelytron Gray, 1835,
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: 40-43
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|Dinelytron Gray, 1835|
Type species: D. grylloides Gray, 1835 by subsequent designation of Kirby (1904).
Dinelytron Gray,1835: 27 ; Westwood 1859: 163 (British Museum list); Kirby 1904: 408 (synonyms of former Orthoptera); Redtenbacher 1906: 150 (taxonomy); Bradley & Galil 1977: 202 (taxonomic arrangement); Zompro 2004: 309 (phylogeny); Rafael & Heleodoro 2017 (Brazilian catalog); Brock et al. 2019 (world catalog).
Diagnosis. Head opaque, dorsally flattened ( Figs. 8A-BView Fig; 11A-BView Fig; 14BView Fig and 48C, EView Fig). Scape and pedicel dorsally black, flagellum brown or grayish ( Figs. 8BView Fig; 14BView Fig; 20BView Fig and 48EView Fig). Male anterior femur trapezoidal, slender, having anterior and posterior margins straight; at least 3.5 times longer than wide (8B; 11B). Mesobasisternum with medial circular sclerite ( Fig. 49FView Fig). Male genitalia with dorsal lobe conspicuously separated from ventral lobe; basal pouches forming single pouch; dorsal left sclerite sclerotized, broad, falciform; internal sclerite present ( Figs. 4View Fig; 5View Fig; 10View Fig; 13View Fig; 16View Fig; 19; 22; 25 and 50H).
Description _. General coloration variable, with different tones of brown, green and gray. Head. Opaque, dorsally flattened ( Figs. 8A-BView Fig; 11A-BView Fig; 14BView Fig; 48C, EView Fig). Frons with triangular sulcus ( Figs. 8CView Fig; 11DView Fig; 14CView Fig; 17BView Fig; 20CView Fig and 23BView Fig). Clypeus anvil-shaped; labrum shaped as “inverted U” ( Figs. 8CView Fig; 11DView Fig; 14CView Fig; 17BView Fig; 20CView Fig and 23BView Fig). Compound eye globose, with spots or stripes. Antenna with setae, as long as or surpassing metanotum; scape and pedicel dorsally black; flagellum dorsally brown or grayish ( Figs. 8BView Fig; 14BView Fig; 20BView Fig; 48EView Fig). Maxillary and labial palpi with setae.
Thorax. Pronotum opaque, longer than wide with carina or sulcus; proscutum quadrangular ( Figs. 8A-BView Fig; 11A-BView Fig; 14A-BView Fig; 17AView Fig; 20A-BView Fig; 23AView Fig; 26CView Fig; 48I-JView Fig). Mesonotum opaque, longer than wide, with longitudinal medial carina; mesoscutum rectangular, longer than wide; scutellum triangular or cordiform ( Figs. 8A-BView Fig; 11A-BView Fig; 14A-BView Fig; 17AView Fig; 20A-BView Fig; 23AView Fig; 26CView Fig and 48I-JView Fig). Metanotum shiny, smooth, as long as wide. Median segment approximately 1.8 times longer than metanotum. Probasisternum trapezoidal, with apical margin wider than basal margin ( Fig. 49CView Fig). Mesobasisternum rectangular, longer than wide, with medial circular sclerite at median third ( Fig. 49FView Fig).
Legs. All legs with black spot at level of femuro-tibial articulation. Anterior femur at least 3.5 times longer than wide, with setae at anterior and posterior margins (8B; 11B; 49H). First tarsomere 1.5 times longer than second tarsomere. Mid and posterior leg dorsally and ventrally with setae. Mid leg shorter than remaining legs. Posterior femur ventrally with undulations or spines, better observed posterolaterally.
Wings. Tegmina elongated, with rounded apex, reaching tergum 7; shoulder pads inconspicuous ( Fig. 8AView Fig; 14AView Fig; 17AView Fig; 20CView Fig; 26AView Fig; 49OView Fig). Subcostal and radial vein close to each other, seeming fused. Number of ramifications of medial vein shifting from two to four. Posterior wing with distal half of costal area concolor with tegmina; anal area entirely hyaline or whitish, without spots ( Figs. 8AView Fig; 14AView Fig; 17AView Fig; 20CView Fig; 26AView Fig; 49OView Fig).
Abdomen. Elongated, slender, widening at tergum 7 towards apex ( Figs. 9AView Fig; 12A and 15A) Vomer “V” shaped, wide at base and narrowing towards apex ( Figs. 9BView Fig; 12C; 15C; 18B; 21B; 24B and 26B). Thorn pads semi-ellipsoid, with three to six spines ( Figs. 9BView Fig; 12C; 15C; 18B; 21B and 24B). Subgenital plate not reaching tergum 10.
Genitalia. Mostly membranous, conspicuously subdivided in dorsal and ventral lobe, both connected by membrane ( Figs. 5View Fig; 16View Fig and 50H, K-L). Dorsal lobe with small rigid spiny sensilla; dorsalmost wall of the dorsal lobe positioned next to basal pouch ( Figs. 4View Fig; 5View Fig; 10View Fig; 13View Fig; 16View Fig; 19; 22; 25 and 50H). Left posterior process covered by small spines, generally inconspicuous. Right posterior process inconspicuous. Basal pouches forming a single pouch, external to dorsal lobe, sclerotized ( Figs. 4View Fig; 5View Fig; 10View Fig; 13View Fig; 16View Fig; 19; 22; 25 and 50H). Dorsal left sclerite, pigmented, falciform, at base conspicuously connected to basal pouch; completely inserted into the genitalia, positioned between dorsal and ventral lobes; always directed from right margin towards left margin ( Figs. 4View Fig; 5View Fig; 10View Fig; 13View Fig; 16View Fig; 19; 22; 25 and 50H). Internal sclerite present, heavily sclerotized, except in Di. leukommatos sp. nov. and Di. trimaculatus sp. nov., positioned next to basal pouch ( Figs. 4View Fig; 5View Fig; 10View Fig; 13View Fig; 16View Fig; 19; 22; 25 and 50H). Ventral lobe with several small digitiform projections; posteriorly with subdivided flagellum in lower and upper lobules.
Female. Similar to male, but differing in following aspects: body more robust, longer and wider. Anterior femur as long as wide ( Fig. 6AView Fig). Abdomen narrowing from abdominal segment 7 towards apex ( Fig. 6B-CView Fig). Subgenital plate elongated, ellipsoid or rectangular, reaching tergum 10 ( Fig. 6DView Fig).
Examined female material.
Dinelytron sp. 2: “UFAMP 01” “ Brasil, AM [Amazonas], Mao [Manaus], Reserva Ducke, v.1985, N. Hamada Col.” ( UFAM).
Dinelytron sp. 4: “CEIOC 7641”, “Itatiaia, E. do Rio [state of Rio de Janeiro], Brasil, 22.1.1927 ”/“Itatiaya [Itatiaia, state of Rio de Janeiro], 700m, Brasil, 8.xii.1951, W. Zikan Col.”/“Floresta da Tijuca, Guanabara [Rio de Janeiro], Brasil, 22.xi.1961 ” (2 \ MNRJ lost in the burning)/“UFVP01”, “Viçosa, D. D. Alvim Col., x.1946 ”/“UFVP 02”, “Viçosa, MG [Minas Gerais], 22.ii.1997, Lobo. A. P. Col.” (2 \ UFV) ( Fig. 3AView Fig).
Dinelytron sp. 5: “UFVP 03”, “Viçosa, MG, Brasil, 10.xii.1982, Fiuza & Martins col.”/“UFVP 04”, “Viçosa, MG, Brasil, Recanto das Cigarras, 24.iii.1992, Fiuza col.” (2 \ UFV).
Dinelytron sp. 6: “UFVP 05”, “ xi.2011, UFV, Viçosa, MG, Brasil ” ( UFV).
Dinelytron sp. 7: “UFVP 06”, “Viçosa, MG, Brasil, 19.x.1983, P. S. Fiuza F. col.” ( UFV).
Dinelytron sp. 8: “UFVP 07”, “Viçosa, MG, Brasil, 3.x.1983, J. Leis col.”/: “UFVP 08”, “ Brasil, MG, Viçosa, iv.2007, col. Gomes S.M.S.”/: “UFVP 09”, “Flona Goytacazes, Linhares, ES, 19 25 0 56.3ʺS, 40 04 0 12.6ʺW, 08-10.xi.2010, Ar. Luminosa [light trap], Fiuza, David, J. Luis, Camilo cols” (3 \ UFV).
Dinelytron sp. 9: “CEIOC 7650”, “Itatiaia, E. do Rio, Brasil, J. F. Zikan col”, “ 29.xi.1929 ”/“CEIOC 7648”, “Itatiaia, E. do Rio, Brasil, J. F. Zikan col”, “ 8.i.1935 ”/“CEIOC 7649”, “Itatiaia, E. do Rio, Brasil, J. F. Zikan col”, “ 14.xii.1946 ”/“CEIOC 7647”, “Itatiaia, E. do Rio, Brasil, J.F. Zikan col”, “ 19.xi.1944 ”/“CEIOC 7644”, “Itatiaia, E. do Rio, Brasil, J. F. Zikan col”, “ 5.xii.1945 ”/“CEIOC 7643”, “Itatiaia, E. do Rio., Brasil, J. F. Zikan col., 1.x,1948” (6 \ CEIOC)/ “ZMUH-AS-20090805-019”, “ Dinelytron grylloides Gray \, Jos. Redtenbacher determ. 1899, public. 1906-08. Bestimm. Verz. Nr. 388”, “ Espírito Santo ( Brasil), J. Michaelis vend., 22.iv.1898 ”/ “ZMUH-AS-20090805-017”, “ Dinelytron grylloides Gray \, Jos. Redtenbacher determ. 1899, public. 1906-08. Bestimm. Verz. Nr. 382”, “ Rio de Janeiro ”/“PHA 157, Zoologischer Museum Hamburg”, “ Brasilien [ Brazil] Itatiaia, 700m, 6.xii.1926 ”,/“PHA 156, Zoologischer Museum Hamburg”, “ Brasilien, Itatiaia 700m, eing. 1928”, (4 \ ZMUH - examined by photo).
Remarks. Females could not be associated with males due to three reasons: 1) all of the Dinelytron species analyzed were mainly distinguished by the male terminalia and genitalia; 2) diagnostic external morphological characters of the males (e.g. shape of the labrum and clypeus) were not found in the females, even when both sexes were collected in the same area; 3) in some cases, more than one female species were collected at the same location (e.g. Rio de Janeiro, Itatiaia). A safer association can only be achieved through rearing from eggs and molecular analyses.
Dinelytron betinho sp. nov.
Dinelytron grylloides type-species.
Dinelytron hipponax incertae sedis.
Dinelytron leukommatos sp. nov.
Dinelytron museunacional sp. nov.
Dinelytron ramusculus sp. nov.
D. shuckardi incertae sedis.
Dinelytron trimaculatus sp. nov.
Dinelytron unilineatus comb. nov.
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