Pieza yeatesi Mendes, Lamas, Evenhuis

Mendes, Luanna L., Lamas, Carlos J. E., Evenhuis, Neal L. & Limeira-De-Oliveira, Francisco, 2019, New Pieza Evenhuis (Diptera, Mythicomyiidae, Mythicomyiinae) from Northeast Brazil, Zootaxa 4629 (1), pp. 1-25: 20-22

publication ID

https://doi.org/10.11646/zootaxa.4629.1.1

publication LSID

lsid:zoobank.org:pub:A8E9B9F1-4CC4-4BF9-81B0-36B1729BCC1B

persistent identifier

http://treatment.plazi.org/id/03D887D1-A301-FFBB-F1A7-8D3DFCA340D2

treatment provided by

Plazi

scientific name

Pieza yeatesi Mendes, Lamas, Evenhuis
status

 

Pieza yeatesi Mendes, Lamas, Evenhuis   & Limeira-de-Oliveira, sp. nov.

( Figs 61–68 View FIGURES 61–68 )

Diagnosis. Mesonotum with narrow yellow supra-alar area ( Fig. 62 View FIGURES 61–68 ). Gonocoxite subquadrate with anterior margin straight, small spiniform projections latero-posteriorly, anteroventral protuberance setose medially in ventral view ( Fig. 65 View FIGURES 61–68 ); gonocoxite bilobed, medially depressed; anterior lobe setose posteriorly in lateral view ( Fig. 66 View FIGURES 61–68 ). Gonostylus slender, triangular base wide, crossed in ventral view ( Fig. 65 View FIGURES 61–68 ).

Description of holotype male ( Fig. 61 View FIGURES 61–68 ). Body length: 1.2 mm. Wing length: 1.06 mm. Head. Eyes separated at vertex by approximately 2.5X distance between posterior ocelli. Ocellar triangle dark brown, subshiny. Frons dorsal ¼ dark brown, ¾ ventral yellow to dark yellow, median depression brown on dorsal ⅔; setae brown, small, lateral; face yellow. Proboscis light brown to brown, almost same length as head; oral cavity yellow, light brown marginally. Postcranium dark brown, subshiny, sparsely pruinose on median occipital sclerite; setae brown. Antenna with second flagellomere subequal in length to maximum width of first flagellomere. Thorax. Mesonotum subshiny, sparsely pruinose medially as a stripe from anterior region to base of wing; setae brown, erect and dense; mesonotum with narrow yellow mark on supra-alar area ( Fig. 62 View FIGURES 61–68 ); prealar and notopleural setae dark brown; strong. Scutellum light brown to brown, setae brown. Pleura yellow on the proepimeron, anterodorsal and dorsal margin of anepisternum, dorsal ¼ of katepisternum and about dorsal ½ of meron ( Fig. 63 View FIGURES 61–68 ); posterodorsal ⅓ of katepi- sternum shiny, glabrous. Legs ( Fig. 61 View FIGURES 61–68 ). Coxae brown to dark brown on dorsal surface, yellow ventrally. Femora dark brown, distal ¼ yellow. Tarsi yellow, tarsomeres II−V dark brown. Wing. Hyaline, except in the ⅓ proximal infuscated brown; costal vein ending at ⅓ proximal distance between veins R 4+5 and M 1; vein R 2+3 arising from Rs at approximately 60° angle, crossvein m-m about ⅓ length of crossvein r-m. Left halter broken; right halter mostly yellow. Abdomen. Brown to dark brown, subshiny; tergites III−VII with plaques paler and shinier than surround- ings, small, glabrous and dispersed; setae yellow, uniform in length; tergite I without yellow posterolateral margin; tergites II–VII with yellow to pale yellow band on posterior margins, more intense on tergites IV–VII. Sternites brown with yellow band on posterior margins. Terminalia. Epandrium bulging in ventral view ( Fig. 65 View FIGURES 61–68 ), ventral margin about 2.0X longer than dorsal margin, anterior margin sinuous, setose on most of surface, except on anterior margin in lateral view ( Fig. 66 View FIGURES 61–68 ); epandrium with outer margin rounded, inner margin subtriangular and sinuous in posterior view ( Fig. 68 View FIGURES 61–68 ). Pseudo-surstylus convergent, pointed at apex in ventral and posterior views ( Figs 65, 68 View FIGURES 61–68 ). Cercus oval, lateral margin juxtaposed to inner margin of epandrium strongly sclerotized, setae dispersed in posterior view ( Fig. 68 View FIGURES 61–68 ), subtriangular, projecting posteriorly in lateral view ( Fig. 66 View FIGURES 61–68 ). Ejaculatory apodeme almost as long as length of anterior arm of parameral sheath, more heavily sclerotized on longitudinal axis, medial arms subquadrate, tapering proximally, apexes rounded, almost as wide as long in ventral view ( Fig. 65 View FIGURES 61–68 ), anterior end oval, not curved dorsally, ventromedial projection subrectangular directed posteriorly, apex truncate in lateral view ( Fig. 66 View FIGURES 61–68 ). Lateral ejaculatory process uniformly sclerotized, sinuous in ventral view ( Fig. 65 View FIGURES 61–68 ), curved posteriorly in lateral view ( Fig. 66 View FIGURES 61–68 ). Phallus funnel-shaped, anterior margin flat with deep median notch in ventral view ( Fig. 65 View FIGURES 61–68 ); basiphallus about 2.0X longer than distiphallus in ventral view ( Fig. 65 View FIGURES 61–68 ), distiphallus simple with only one opening. Anterior arm of parameral sheath with a little more than distal ½ almost 2.0X wider than proximal ½ in ventral view ( Fig. 65 View FIGURES 61–68 ), sclerotization stronger on internal margin. Gonocoxite subquadrate, anterior margin straight, projections spiniform, small latero-posteriorly, anteroventral protuberance medially setose in ventral view ( Fig. 65 View FIGURES 61–68 ); gonocoxite with anterodorsal margin deeply concave, anteroventral margin setose in anteroventral view ( Fig. 67 View FIGURES 61–68 ), bilobed, medially depressed, anterior lobe setose posteriorly in lateral view ( Fig. 66 View FIGURES 61–68 ). Gonostylus slender, base triangular wide, crossing each other in ventral view ( Fig. 65 View FIGURES 61–68 ). Female. Unknown.

Variation (n = 2). Body length: 1.20–1.35 mm. Wing length: 1.06–1.07 mm. Wing of paratype ( Fig. 64 View FIGURES 61–68 ): infuscated brown; costal vein ending at proximal ⅓ distance between veins R 4+5 and M 1; vein R 2+3 arising from Rs at approximately 70° angle, crossvein m-m about ⅓ length of crossvein r-m.

Etymology. The specific epithet honors Dr. David K. Yeates, who has contributed substantially to the study of Diptera   .

Type material. HOLOTYPE ♂: Brazil, MA[= Maranhão], Carolina, PARNA [=Parque Nacional] Chapada das Mesas, Riacho Sucuruiu , 240 m, 07°07′05″S, 47°18′31″W / Armadilha Malaise, 01–10.viii.2013, J.A. Rafael, F. Limeira-de-Oliveira, T.T.A. Silva, cols./ MYTH 117 GoogleMaps   / Holotype ♂ Pieza yeatesi Mendes, Lamas, Evenhuis   & Limeira-de-Oliveira ( CZMA)   . PARATYPE: idem, 15–31.vii.2013 (pinned: 1♂ CZMA)   .

Geographical record. This species is known only from the Brazilian state of Maranhão ( Fig. 69 View FIGURE 69 ), where the type series was collected in the Cerrado biome.

Remarks. Pieza yeatesi   sp. nov. is similar to P. aurislepus   sp. nov. in having the gonostylus simple, not trifurcate ( Figs 14 View FIGURES 10–17 , 65 View FIGURES 61–68 ). Pieza yeatesi   sp. nov. differs from P. aurislepus   sp. nov. in the oval cerci without spiniform distal portion directed posteriorly ( Figs 66, 68 View FIGURES 61–68 ) (cerci sub-hemispherical with distal end spiniform directed posteriorly in P. aurislepus   sp. nov., Figs 15, 17 View FIGURES 10–17 ); gonocoxite subquadrate in ventral view ( Fig. 65 View FIGURES 61–68 ) (gonocoxite subtrapezoidal in P. aurislepus   sp. nov. in ventral view, Fig. 14 View FIGURES 10–17 ); gonostylus triangular at base, slender distally, not surpassing posterior margin of epandrium in ventral view ( Fig. 65 View FIGURES 61–68 ) (gonostylus lanceolate on the tips, surpassing posterior margin of epandrium in P. aurislepus   sp. nov. in ventral view, Fig. 14 View FIGURES 10–17 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Bombyliidae

Genus

Pieza