Wuyjugu pizai Tavares, 2020

Tavares, Gustavo Costa, 2020, A new genus and species ofAgraeciini (Orthoptera: Tettigoniidae: Conocephalinae) from Amazon Rainforest, Zootaxa 4851 (1), pp. 163-170 : 164-169

Wuyjugu pizai Tavares , sp. nov.

urn:lsid:zoobank.org:act:50D994CA-643E-47F0-B16A-60379A10DC58

Type material. Holotype. Male. BRAZIL, Pará, Aveiro. Estrada da Petróbras.Cataueré - Área 3. Lat: 03°22’45.00”S, Long : 56°23’59.00”W; 26.IX.2009; Silva S. S. & J. Dias; Malaise. Registration number: MPEG ORT 16017606 . Deposit: MPEG.

Paratype. Female. BRAZIL, Pará, Santarém. Rio Tapajós. 08–20.VII.2013. P. F. Viana. Coleta manual. Deposit: CZDC-UEPA .

Etymology. The specific epithet is in honor of Salvador Toledo Piza Jr., a Brazilian entomologist who described many Orthoptera species from Brazil.

Diagnosis. This species is easily recognizable by the following combination of features: blackish line extending from the tip of the fastigium of vertex until the end of the tegmina ( Fig. 1B; D ); fastigium of vertex triangular, conical, as wide as the scapus ( Fig. 2A; B ); male cercus with the apex obliquely truncated, mid-dorsal portion bearing a conspicuous oblique inward spine, and the ventral portion with a subapical inward finger-like projection ( Fig. 3 A–B); phallic complex completely membranous ( Fig. 3 F–I); ovipositor very long (almost as long as the wings and more than 1.5 times longer than hind femur), slender and straight ovipositor ( Fig. 1 C–D; 2H).

Description. Head. Tegument smooth; fastigium of vertex contiguous with fastigium of frons, not dentated bellow, triangular, conical, as wide as the scapus, projected obliquely ( Fig. 2A; B ); scapus with lobe projected inward ( Fig. 2A ); genae without lateral carinae ( Fig. 2A ); mandibles as long as the distance between the antennal orbit and the clypeal suture ( Fig. 2A ); medial ocellus conspicuous ( Fig. 2A ).

Thorax. Pronotal disk with rounded keels only on the posterior zone, with a transversal sulcus, arched forward, weakly marking the limits of anterior and mid zones ( Fig. 2B ). Anterior margin of pronotal disk slightly concave medially; posterior margin truncate ( Fig. 2B ). Lateral lobes of pronotum longer than deep, with ventro-cephalic margin rounded; anterior angle rounded and widely obtuse; ventral margin concave; posterior angle straight, with a rounded border; ventro-caudal margin rounded; humeral sinus weakly impressed ( Fig. 1A; C ); prosternum smooth; meso- and metasternum wider than long; meso- and metabasisternal lobes (msl and mtl, respectively) reduced, not produced hindward, mesobasisternal lobe with a very small protuberance on the posterior angle ( Fig. 2C ).

Wings. Wings very long, greatly surpassing the apex of the abdomen ( Fig. 1 A–D); tegmina straight, with anterior and posterior margins almost parallel (anterior margin slightly arched proximally) ( Fig. 2D ); stridulatory apparatus with the left file bearing 95 teeth, maximum and minimum distances between teeth 0.02 and 0.04 mm, respectively ( Fig. 2G ); left file damaged; vein CuPa of the apparatus absent in both wings, forming a large cell compound by h1 and the neck (cell h1+neck), which is longitudinally marked by a fold line ( Fig 2 E–F); frame of left tegmina almost parallel to the posterior branch of CuPa (CuPaβ) ( Fig. 2F ).

Abdomen. Male tenth tergite without conspicuous lobes or projections, only two broadly swollen areas just above the cercus ( Fig 3A ); male cercus with the apex obliquely truncated and slightly bilobated, the mid-dorsal portion with a conspicuous oblique inward spine and ventral portion with a subapical inward finger-like projection ( Fig. 3 A–B); subgenital plate triangular, apically incised, with cylindrical styli ( Fig. 3C ); phallic complex completely membranous and compressed dorso-ventrally, with tiny ejaculatory vesicles (ejv), dorsal lobe (dl) smaller than ventral lobes (vl) ( Fig. 3 F–I); ovipositor very long (almost as long as the wings), very thin, acuminated and completely straight ( Fig. 1C ; 2H ); female subgenital plate triangular in ventral view ( Fig. 3D ); in lateral view, the lateral expansions of the plate fold dorsally in a straight angle forming a keel ( Fig. 3E ). Probably the female specimen was previously immersed in an alcoholic solution, or it had recently molted when killed and preserved because the scleritis of the abdomen were strongly deformed. Even after rehydrated, the abdominal scleritis (including the subgenital plate) remain unchanged, so it is difficult to ensure if the original form is the same as seen in Fig. 3 D–E.

Body size. Male. Total size: 45.2 mm; pronotum: 6.4 mm; width of pronotum: 5.5 mm; tegmina: 35.2; hind femur: 22.5 mm. Female. Total size: 57 mm; pronotum: 8.5 mm; width of pronotum: 7 mm; tegminia: 45.6 mm; hind femur: 28 mm; ovipositor: 43.8 mm.

Distribution. This species is known only to the type’s localities, two municipalities in the region known as Tapajós’ Valley, in the State of Pará, Brazil ( Fig. 4 ).

Chromatic pattern. The only two known specimens probably lost part of the original coloration due to the preservation methods, but the male has a tegument yellowish with the tibiae and the veins of the tegmina reddish, and the female is mostly yellowish; on the tegmina, numerous brownish macules can be found; a blackish line extends dorsomedially from the tip of the fastigium of vertex until the end of the tegmina.

Figures

FIGURE 1. Habitus of Wuyjugu pizai. A) Male, lateral view; B) Male, dorsal view; C) Female, lateral view; D) Female, dorsal view. Scale bars 10 mm.

FIGURE 2. Wuyjugu pizai. A) Head, frontal view; B) Head and Thorax, dorsal view; C) Sternum; D) Left tegmen, dorsal view; E) Left stridulatory apparatus, dorsal view; F) Right stridulatory apparatus, dorsal view; G) Left stridulatory file; H) Ovipositor. Abbreviations. msl) mesobasistenral lobe; mtl) metabasisternal lobe; h1) anterior portion of the harp; CuPaβ) posterior branch of vein CuPa. Scale bars A–G) 1 mm; H) 10 mm.

FIGURE 3. Wuyjugu pizai. A) Male postabdomen, dorsal view; B) Male postabdomen, ventral view; C) Male subgenital plate; D) Female subgenital plate, ventral view; E) Female subgenital plate, lateral view (specimen rehydrated); F) Phallic complex, dorsal view; G) Phallic complex, ventral view; H) Phallic complex, posterior view; I) Phallic complex, anterior view. Abbreviations. ejv) ejaculatory vesicle; dl) dorsal lobe; vl) ventral lobe.

FIGURE 4. Distribution map of Wuyjugu pizai.