Pattonella (Pattonella) juruti, Camargo & Carvalho-Filho & Esposito, 2018

Camargo, Sofia Lins Leal Xavier De, Carvalho-Filho, Fernando Da Silva & Esposito, Maria Cristina, 2018, The genus Peckia Robineau-Desvoidy (Diptera: Sarcophagidae) in the Brazilian Amazon: a new species, new records, descriptions of female terminalia and key to species, Zootaxa 4483 (1), pp. 1-35 : 17-18

Peckia (Pattonella) juruti sp. nov.

( Figs 21–25 , 31–34 )

Diagnosis. Mid femur of male with a ctenidium on posteroventral surface. Cercus of a forward inverted L-shape ( Fig. 21 ). Pregonite with a prominent preapical rounded projection dorsally ( Fig. 25 ). Ventral surface of juxta with two inner lobes ( Figs 23–24 ). Juxtal accessory lobe elongate, occupying more than two-thirds of juxtal length ( Figs 24 , 33 ). Capitis with two pairs of rounded projections laterally ( Figs 31–32 ).

Description. Male. Body length 13–15 mm (n = 4).

Head. Fronto-orbital and parafacial plates and postocular strip with golden microtrichosity. Ocellar setae shorter than postocular setae. Outer vertical seta thicker than postocular setae. Orbital setae black. Three frontal setae situated below posterior limit of lunule. Antenna dark brown; first flagellomere about 2.5 times as long as pedicel; arista plumose in basal two-thirds. Gena and postgena with light golden microtrichosity; genal setae black anteriorly, yellow posteriorly. First row of occipital setae black, others yellow. Palpus black.

Thorax. Thorax with three strong black longitudinal vittae; microtrichosity gray with a faint yellowish hue. Chaetotaxy: acrostichals 0+1, dorsocentrals 0+2, intra-alars 2+2 (anterior one shorter), supra-alars 2+3, scutellum with 1 pair of basal setae, 1 pair of lateral setae, 1 pair of fine (shorter than apical) subapical setae, 1 pair of apical setae and no discal setae. Prosternum and posterior surface of hind coxa with yellow setae, and with white and black setae ventrally on anterior half. Three katepisternal setae. Postalar wall with white setae anteriorly. Wing: hyaline, costal spine absent, vein R1 bare on dorsal surface, third costal section bare ventrally. Lower calypter without dorsal setae, with a central dark spot and a fringe of long, hair-like setae along outer margin, extending to posterior margin. Legs: mid femur with a ctenidium on posteroventral surface; anterodorsal surface of mid tibia with 1 median and 1 apical setae; ventral surface of hind femur with a row of setae; hind tibia anterodorsally with 1 seta in basal third, 1 in middle third and 1 preapical seta.

Abdomen. Black with pattern of silvery-gray microtrichosity. T4 with one lateral seta on each side. T5 with gray microtrichosity. Posterolateral region of T5 with setae directed towards ventral body region. Terminalia: ST5 orange with anterior margin V-shaped and a rounded protuberance on outer lateral margin; arms of ST5 conical, with short and stout setae along inner margins ( Fig. 22 ). Syntergosternite 7+8 orange, with golden microtrichosity. Epandrium bright orange. Cercus dark brown and of same thickness from base to apex; of a forward inverted Lshape, with rounded apex in lateral view, with long setae restricted to cercal base and with some short setae on cercal prong ( Fig. 21 ). Surstylus orange, clubbed, with long setae on apex ( Fig. 21 ). Pregonite elongate, strongly curved anteriorly, with a prominent preapical rounded projection and pointed apex. Postgonite elongate, with hooked apex ( Fig. 25 ). Basi- and distiphallus connected by a hinge. Phallic tube elongate, tubular and curved anteriorly. Juxta well demarcated from phallic tube, without a juxtal lateral plate; juxtal base with a prominent membranous accessory lobe curved dorsally ( Figs 24 , 33 ); juxta sclerotized, composed of two large rounded lobes ( Figs 23–24 ); ventral surface of lobes with smaller inner lobes ( Figs 23–24 ) covered with numerous minute, lightcolored spines (hardly visible at low magnifications) ( Figs 33–34 ); dorsal margin of inner lobe reaching beyond dorsal margin of lateral lobe and visible laterally ( Figs 23–24 , 33–34 ); juxtal accessory lobe elongate, occupying more than two-thirds of juxtal length. Vesica composed of two slender and coiled filaments with flattened tip ( Figs 31–32 ). Acrophallus with a pair of separated lateral styli, each with a longitudinal cleft; styli not visible when phallus observed in lateral view. Each lateral stylus elongate and twisted distally. Capitis higher than wide, sclerotized, with two pairs of rounded projections laterally and one pair of projections distally, with hooked tips ( Figs 31–32 ).

Female. Unknown.

Distribution. Brazil (Pará).

Type material. HOLOTYPE ♂: Juruti, PA [= Pará state], Brasil / Pulmão bovino [= on beef lung bait] / 5– 12.V.2008 / F.S. Carvalho-Filho & / M.C. Esposito ( MPEG) . PARATYPES: 3 ♂♂, same data as holotype (2 MPEG, 1 MNRJ) .

Etymology. The specific epithet refers to the type locality, the municipality of Juruti, and is as a noun in apposition. The word “ juruti ” is the vernacular name of doves of the genus Leptotila Swainson (Aves: Columbiformes : Columbidae ), once a common species in the type locality.

Remarks. The cercus, surstylus and postgonite of Peckia (P.) juruti sp. nov. are similar to those of P. (P.) smarti , but the new species differs in having pregonite without a median triangular projection ( Fig. 25 ). In P. (P.) juruti sp. nov. the juxtal accessory lobe is conspicuously developed, taking up more than two-thirds of the total juxtal length ( Figs 24 , 33 ); the juxta has two inner lobes, visible in lateral view ( Fig. 23 ), covered with numerous tiny spines ( Figs 24 , 33 ); the capitis is composed of two lateral projections ( Figs 31–32 ). In P. (P.) smarti the pregonite has a median triangular projection the tip of which is laterally directed proximad to the preapical rounded projection ( Fig. 28 ), which is not as developed as in the new species ( Fig. 25 ); the juxta has just one inner lobe ( Fig. 26 ), not visible in lateral view, which is covered with a few tiny spines; the juxtal accessory lobe is short, occupying about one-third of the total juxtal length ( Fig. 27 ); finally, the capitis has one lateral projection ( Figs 29– 30 ).

According to Buenaventura & Pape (2015) the capitis is absent in species of Peckia sensu lato, and this was one of the synapomorphies used by these authors to define this genus. However, in our opinion and based on the definition of Buenaventura & Pape (2015), the structure present in the acrophallus of P. (P.) smarti and P. (P.) juruti sp. nov. ( Figs 29–32 ) is the capitis.

Figures

FIGURES 21–28. Male terminalia of Peckia spp. 21–25. Peckia (Pattonella) juruti sp. nov., paratype specimen from Pará, Juruti (MPEG). 21. Epandrium, cercus and surstylus in left lateral view. 22. Sternite 5 in ventral view. 23. Juxta in ventral view. 24. Distiphallus in left lateral view. 25. Gonites in left lateral view. 26–28. Peckia (Pattonella) smarti (Lopes), specimen from Pará, Jari (MPEG). 26. Juxta in ventral view. 27. Distiphallus in left lateral view. 28. Gonites in left lateral view. Scales bars = 0.5 mm. Abbreviations: Il = inner lobe; J = juxta, Ja = juxtal accessory lobe; Ls = lateral stylus; mtp = median triangular projection; pp = preapical projection; PRG = pregonite; PTG = postgonite; V = vesica.

FIGURES 29–34. SEM images of distiphalli of Peckia spp. 29–30. Peckia (Pattonella) smarti (Lopes), specimen from Pará, Jari (MPEG). 29. Juxta, vesica, capitis and lateral stylus in ventral view. Scale bar = 150 µm. 30. Capitis and vesica in ventral view. Scale bar = 100 µm. 31–34. Peckia (Pattonella) juruti sp. nov., paratype specimen from Pará, Juruti (MPEG). 31. Juxta, vesica, capitis and lateral stylus in ventral view; arrows point to lateral projections of capitis. Scale bar = 100 µm. 32. Capitis and vesica in ventral view; arrows point to lateral projections. Scale bar = 30 µm. 33. Distiphallus, left lateral view. Scale bar = 300 µm. 34. Detail of dorsal margin of juxta, left lateral view. Scale bar = 45 µm. Abbreviations: Ca = capitis; Ls = lateral stylus; V = vesica.