Papaverellus aureocingulatus Artigas & Vieira

Artigas, Jorge N. & Vieira, Rodrigo, 2014, New genus and species of Neotropical robber flies (Diptera, Asilidae, Asilinae), Zootaxa 3774 (3), pp. 282-288 : 283-288

Papaverellus aureocingulatus Artigas & Vieira sp. nov.

Diagnosis. Similar in general appearance and vestiture to species of Eicherax Bigot, 1857 . Aedeagus long, slender, ending in 2 long prongs ( Fig. 13 ). Spermathecae long, placed in between the 2 long arms of the genital fork; 2 spherical capsules with long capsular and expulsory ducts ( Fig. 18 ); common duct long, thick, shorter than primary oviducts. Spermathecae ( Fig. 18 ) similar to Eraxasilus luctuosus (Macquart, 1838) (fig. 339 in Papavero et al., 2009).

Description. Holotype male. Head. Ocellar triangle dark, with few, short, black setae; postocular area with black macrosetae and golden setae on dorsal 1/2; scape dark brown; pedicel, postpedicel and stylus light brown; antennae long ( Fig. 4 ); scape twice as long as pedicel; postpedicel 2.5 times as long as pedicel ( Fig. 4 ); stylus with 2 elements ( Fig. 4 ), almost 1.5 times as long as postpedicel ( Fig. 4 ); apex of stylus bare ( Fig. 4 ); 5 black postocular macrosetae on each side of head; frons golden tomentose laterally and brown tomentose on median region; face golden tomentose; face and frons in frontal view roughly triangular in shape ( Fig. 2 ); face widening toward subcranial margin, in lateral view ( Fig. 2 ); face in lateral view produced beyond eye margin over lower 1/2 ( Fig. 3 ) with sparse black macrosetae dorsally, directed anteriorly, ventral 1/2 of facial swelling with yellow macrosetae directed anteriorly and ventrally, more dense towards oral margin. Palpus with long, black macrosetae; proboscis black, yellow setose.

Thorax. Four black antepronotal macrosetae; propleura and mesopleura tumid, golden, setae or macrosetae absent; mesonotum black with dark brown areas surrounded by silvery lines; metapleura tumid, silver; postpronotal lobe with short scattered, yellow setae; 2 notopleural macrosetae; 1 supra-alar macroseta; 2 postalar macrosetae; 3 pairs of postsutural dorsocentral macrosetae; anatergum asetose; katatergal macrosetae yellowish; setae on posterior meron + metanepisternum yellowish; scutellum tumid, silvery, without groove on posterior border; 2 black and long apical scutellar macrosetae; discal scutellar setae yellowish.

Wings ( Fig. 5 ). Hyaline, veins brown; cell r1 close before wing margin; R4 without recurrent vein; R4 ending before tip of wing, and R5 after; bifurcation of veins R4 and R5 before apex of discal cell; cell m3 close; microtrichia on posterior wing margin arranged in a single plane.

Legs. Coxae gray, tumid, similar to pleura, fore and middle coxae with white setae dorsally. Femora shining black ( Fig. 1 ); fore femora with golden setae ventrally, middle femora with strong, black macrosetae ventrally and anteriorly; hind femora with 2–3 black anterior macrosetae, 5 black macrosetae anteroventrally and 1 black preapical anterodorsal and 1 black preapical posterodorsal macroseta; tibiae yellow, except for a brown stripe anteriorly ( Fig. 1 ); fore tibia with 2 black anterodorsally and 5 black setae posterodorsally; 3 long black macrosetae and yellow setae posteriorly; middle tibiae with 3 long setae posteriorly; hind tibiae with 2–3 black setae anterodorsally; tarsus light brown with black setae. Claws black, pulvilli yellow.

Abdomen. Silver with reflections dorsally, tumid laterally ( Fig. 1 ). Segments setose laterally ( Fig. 1 ).

Terminalia. Shiny black, black and yellow setose, rotated at a 45º angle with abdomen ( Figs. 1 , 7 ). Epandrium flat ventrally, similar to the shape a split hoof of goat ( Fig. 7 ). Epandrium globose basally, pointed apically ( Fig. 1 ); basal 1/2 of gonocoxite elongate apically ( Figs. 11, 12 ); each gonocoxite basally with patch of long, dense, golden setae, merging on and crossing hypandrium dorsally, forming conspicuous golden belt ( Figs. 7, 8, 11 ); median region of gonocoxite with round, tumid protuberance, with sparse short black setae ( Figs. 7, 8, 12 ); apical region of gonocoxite serrated ( Fig. 12 ); hypandrium black, subtriangular, with sparse long setae laterally; apex with 3 small lobes ( Fig. 11 ); aedeagus with 2 long, acute terminal tubes ( Fig. 13 ); ejaculatory apodeme long and very narrow ( Fig. 13 ).

Size. Body length 15.5 mm. Wing length 10 mm.

Female. Similar to male, except: ovipositor ( Figs. 14–17 ) shining black, strongly compressed laterally, mainly on ventral part; median sclerite at posterior end of furca (remnant of tIX) absent; spermathecae ( Fig. 18 ) situated between segment VIII and IX; capsules are usually seen on base of segment VII; genital fork with long arms, slightly more than 2.5 times the length of expulsory ducts ( Fig. 18 ); 2 expulsory ducts; capsular ducts 1/3 the width of expulsory ducts and slightly longer; 2 spherical capsules, 1/4 of length of capsular ducts in diameters ( Fig. 18 ).

Geographical records. Brazil (Pará state and Piauí state).

Etymology. The specific name aureocingulatus refers to the basal region of the gonocoxite, with a patch of long, dense, golden setae, directed to the opposite side, crossing over the tip of the hypandrium, forming a conspicuous golden belt.

Material examined. HOLOTYPE: BRAZIL: Utinga, Belém, Pará, Nov.[ember].22.1963 / Oliveira & Wygodzinsky Coll. / [01°25'29"S, 48°26'86"W] / Papaverellus aureocingulatus Artigas & Vieira Holotype (♂ MNRJ).

PARATYPES. Same label data as holotype, repositories as follows (1♀ MNRJ); (1♂ MNRJ); (1? sex [terminalia lost] INPA); (2♂; 1♀ MZUC – UCCC); BRASIL, Piauí, P.[arque] N.[acional] Sete Cidades, 19– 25.iv. 2012, 193 m. a. 04.09909ºS, 4170952ºW {03°55'39"S 41°42'42"W}, Oliveira & Somavilla / Papaverellus aureocingulatus Artigas & Vieira Paratype (2♂; 1♀ INPA); same data, except: (1♂ MZUC – UCCC); BRASIL, PI[auí], Piracuruca P.[arque] N.[acional] de Sete Cidades, 19–24. IV. 2012, J.A. Rafael, F. Limeira–de–Oliveira cols. / Armadilha Malaise (1♀ MZUC – UCCC).

Figures

FIGURES 6 – 13. Papaverellus aureocingulatus Artigas & Vieira gen. nov. et sp. nov. Male. 6, Male terminalia, dorsal view; 7, Male terminalia, ventral view; 8, Male terminalia, ventral view; 9, Male terminalia, lateral view; 10, Inner margin of epandrium and subepandrial sclerite; 11, Hypandrium, gonocoxite and gonostylus, ventral view; 12, gonocoxite and gonostylus; 13, Aedeagus and ejaculatory apodeme, lateral view. Abbreviations: aed: aedeagus; cerc: cercus; ej apod: ejaculatory apodeme; epand: epandrium; goncx: gonocoxite; gonst: gonostylus; hypd: hypandrium.

FIGURES 14 – 18. Papaverellus aureocingulatus Artigas & Vieira gen. nov. et sp. nov. Female. 14, Habitus, lateral view; 15, Ovipositor, lateral view; 16, Ovipositor, dorsal view; 17, Ovipositor, ventral view; 18, Genital fork and spermathecae. Abbreviations: ar: arms of genital fork; cap duct: capsular ducts; com duct: common duct; exp duct: expulsory ducts; cerc: cercus; f apod: furcal apodeme; spmth: spermathecae; stVIII: sternite VIII; tVII: tergite VII; tVIII: tergite VIII; tIX + X: tergite IX + X.

FIGURES 1 – 5. Papaverellus aureocingulatus Artigas & Vieira gen. nov. et sp. nov. Male. 1, Habitus, lateral view; 2, Head, frontal view; 3, Head, lateral view; 4, Antennae, lateral view; 5, Wing; Male terminalia, lateral view. Abbreviations: pp: postpedicel; ped: pedicel; scp: scape; sty: stylus.