Pieza bittencourti 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: 8-10

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-A315-FFA7-F1A7-8EC5FAEF45CA

treatment provided by

Plazi

scientific name

Pieza bittencourti Mendes, Lamas, Evenhuis
status

 

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

( Figs 18–26View FIGURES 18–26)

Diagnosis. Mesonotum yellow on the submedian antero-mesonotal triangular mark, supra-alar and prescutellar areas with V-marks projecting anteriorly toward transverse suture ( Fig. 19View FIGURES 18–26). Gonocoxite strongly sclerotized on anterior ⅔, anterior margin rounded laterally, posterior ⅓ narrow, with deep median incision, medially with small setae ( Fig. 22View FIGURES 18–26). Gonostylus trifurcate, projections convergent medially in ventral view ( Fig. 22View FIGURES 18–26).

Description of holotype male ( Fig. 18View FIGURES 18–26). Body length: 1.24 mm. Wing length: 0.89 mm. Head. Eyes separated at vertex by about 3.0X distance between posterior ocelli. Ocellar triangle dark brown, subshiny. Frons dorsal ¼ dark brown, ¾ ventral yellow, brown on ⅔ dorsal of median depression; setae brown, small, lateral; face yellow. Proboscis brown to dark brown, about ⅓ longer than length of head; oral cavity yellow, light brown marginally. Postcranium dark brown, yellow from median region to near postgena, following eye margin, subshiny, sparsely pruinose on median occipital sclerite, setae brown. Antenna with second flagellomere almost as long as first flagellomere. Thorax. Mesonotum subshiny, sparsely pruinose medially with the aspect of a stripe from anterior region to base of wing, setae brown, proclinate and reclinate, sparse; mesonotum yellow on the submedian antero-mesonotal triangular mark, supra-alar and prescutellar areas with V-shaped marks projecting anteriorly toward transverse suture ( Fig. 19View FIGURES 18–26); prealar and notopleural setae dark brown; strong. Scutellum yellow, setae brown, sparse. Pleura yellow on the proepimeron, about ½ dorsal and posterior region of anepisternum, dorsal ¼ of katepisternum, posterior margin of anepimeron and about dorsal ½ of meron ( Fig. 20View FIGURES 18–26); posterodorsal ⅓ of katepisternum shiny, setae yellow, sparse, restricted to margin of anepisternum. Legs ( Fig. 18View FIGURES 18–26). Forecoxa brown on dorsal surface and yellow ventrally, mid and hind coxae yellow. Femora dark brown, distal ¼ yellow. Tarsi yellow, tarsomeres II–V dark brown. Wing ( Fig. 21View FIGURES 18–26). Hyaline; costal vein ending at ½ distance between veins R 4+5 and M 1; vein R 2+3 arising from Rs at approximately 60° angle, crossvein m-m contiguous with end of cell dm. Halter with stem and knob yellow, posterior portion of knob infuscated brown. Abdomen. Brown to dark brown, subshiny; tergites II−VII with plaques paler and shinier than surroundings, small, glabrous and dispersed; setae yellow, longer on tergites IV−VII; tergites I−II with posterolateral margin yellow, tergites III−VII with pale yellow band on posterior margin. Sternites brown, each with yellow band on posterior margin. Terminalia. Epandrium bulging in ventral view ( Fig. 22View FIGURES 18–26); almost as wide as long, anterior margin sinuous; epandrium setose on posterior ¾ in lateral view ( Fig. 23View FIGURES 18–26); epandrium with outer margin oval, inner margin cordiform in posterior view ( Fig. 25View FIGURES 18–26). Pseudo-surstylus convergent, tapered toward apex in ventral and posterior views ( Figs 22, 25View FIGURES 18–26). Cercus oval in posterior view ( Fig. 25View FIGURES 18–26), membranous, sclerotized area small, setae concentrated on sclerotized surface, projecting posteriorly in lateral view ( Fig. 23View FIGURES 18–26). Ejaculatory apodeme about ¾ length of anterior arm of parameral sheath, more heavily sclerotized on longitudinal axis; medial arms subquadrate, almost as wide as long in ventral view ( Fig. 22View FIGURES 18–26), anterior end rounded, slightly curved dorsally, ventromedial projection sub-oval, directed posteriorly, apex truncate in lateral view ( Fig. 23View FIGURES 18–26). Lateral ejaculatory process uniformly sclerotized, slightly sinuous in ventral view ( Fig. 22View FIGURES 18–26); ejaculatory apodeme slightly curved ventrally in lateral view ( Fig. 23View FIGURES 18–26). Phallus funnel-shaped, anterior margin almost flat with median notch small in ventral view ( Fig. 22View FIGURES 18–26); basiphallus about 2.0X longer than distiphallus in ventral view ( Fig. 22View FIGURES 18–26), distiphallus simple with only one apical opening. Anterior arm of parameral sheath with distal ½ almost 2.0X wider than proximal ½ in ventral view ( Fig. 22View FIGURES 18–26), sclerotization stronger on inner margin. Gonocoxite subtrapezoidal, strongly sclerotized on anterior ⅔, anterior margin rounded laterally, ⅓ posterior narrow, with deep median cleft, setae small medially in ventral view ( Fig. 22View FIGURES 18–26); gonocoxite with anterodorsal margin concave, anteroventral margin setose in anteroventral view ( Fig. 24View FIGURES 18–26), bulging, appearing longer than epandrium and almost as wide as it in lateral view ( Fig. 23View FIGURES 18–26). Gonostylus trifurcate, projections convergent medially in ventral view ( Fig. 22View FIGURES 18–26). Female. Similar to male. Genitalia ( Fig. 26View FIGURES 18–26). Genital fork V-shaped. Common duct short, about ½ length of proximal spermathecal duct; basal plate sclerotized. Sperm pump caliciform, membranous with transverse striations. Proximal spermathecal duct about 2.0 to 3.0X thicker than distal; distal spermathecal duct about 12.0X longer than proximal, undulate, translucent. Valve indistinct. Spermathecal reservoir strongly sclerotized, brown, slightly sinuous, about 1.5X longer than sperm pump, without glandular trichomes.

Variation (n=10). Body length: 1.0–1.6 mm. Wing length: 0.83–1.15 mm. Proboscis as long as the head. Mesonotum, often with yellow submedian stripe, projecting from antero-mesonotal triangular mark to prescutellar region. Band on posterior margin of tergites, sometimes indistinct. Alcohol preserved specimens generally light brown.

Etymology. The specific epithet honors Aluizio Bittencourt, professor at the Universidade Estadual do Maranhão, for his contributions to education in Caxias, Maranhão state.

Comments. The specimens captured directly from flowers at Parque Nacional Serra das Confusões—Piauí, are associated with plants in the family Malvaceae  (Figs 72–73). Specimens captured near Riacho do Ouro, rural area of the municipality of Caxias—Maranhão, are associated with plants in the family Rubiaceae  (Fig. 71).

Type material. HOLOTYPE ♂: Brazil, Maranhão, Caxias, Zona Rural, Riacho do Ouro [altitude 69 m], 04°48′11″S, 43°20′30″W / Varredura, 02.ix.2016, FLO, L.L. Mendes / MYTH 98GoogleMaps  / Holotype ♂ Pieza bittencourti Mendes, Lamas, Evenhuis  & Limeira-de-Oliveira ( CZMA)  . PARATYPES: idem, Carolina, PARNA  [=Parque Nacional] Chapada das Mesas, Riacho Sucuruiu, 240 m, 07°07′05″S, 47°18′31″W / Armadilha Malaise , 11–14.vi.2013, JAR, FLO, AAGoogleMaps  Santos (1♂ BPBM)  ; idem, 15–31.vii.2013, JAR, FLO  & T.T.A. Silva, cols. (1♂, pinned: 1♂ CZMA)  ; idem, 01–10.viii.2013 (1♂ CZMA, 1♂ INPA)  ; idem / MYTH 103 (1♂ INPA)  ; idem, 20–31.viii.2013 / MYTH 101 (2♂ CZMA)  ; idem / MYTH 107 (1♂ MZUSP)  . idem, Caxias, Reserva Ecológica do Inhamum, 119 m, 04°54′04″S, 43°26′09″W, Varredura , 07.ix.2014, FLO (in alcohol: 4♂ 4♀ CZMA, 3♂ 3♀ MZUSP)GoogleMaps  . Same data as holotype, except: 24–26.vii.2012, JAR, FLO  & J.S. Pinto Júnior (4♂ 5♀, pinned: 1♂ CZMA; 2♂ 8♀ INPA; 1♂ 3♀ MNRJ, 1♂ 2♀, pinned: 1♂ MZUSP)  ; idem / MYTH 64 (pinned: 1♀ CZMA)  ; idem / MYTH 66 (pinned: 1♀ CZMA)  ; idem / MYTH 67 (pinned: 1♀ CZMA)  ; idem / MYTH 69 (pinned: 1♀ MZUSP)  ; idem / MYTH 70 (1♀ INPA)  ; idem / MYTH 71 (pinned: 1♀ CZMA)  ; idem / MYTH 74 (pinned: 1♀ INPA)  ; idem / MYTH 77 (pinned: 1♀ INPA)  ; idem / MYTH 78 (pinned: 1♀ CZMA)  ; idem / MYTH 80 (pinned: 1♀ CZMA)  ; idem / MYTH 99 (1♂ MZUSP)  ; idem / MYTH 104 (1♂ INPA)  ; idem / MYTH 105 (1♂ CZMA)  . Same data as holotype (3♀ BPBM; 3♀ MZUSP)  ; idem / MYTH 65 (pinned: 1♀ MZUSP)  ; idem / MYTH 68 (pinned: 1♀ MZUSP)  . idem, Vila Paraíso [altitude 74 m], 04°53′42″S, 43°19′49″W, Varredura , 06.viii.2016, FLOGoogleMaps  , J.M. Oliveira , cols. (2♀, pinned: 1♀ MZUSP; 1♀, pinned: 1♀ CZMA)  ; idem / MYTH 100 (1♂ CZMA)  ; idem, 02.ix.2016 (1♀ BPBM, 1♀ CZMA)  . idem, Mirador, Parque Est. [=Estadual] Mirador, Posto dos Cágados [altitude 297 m], 06°48′30″S, 45°06′21″W / Arm. [=armadilha] Malai- se, 21–26.viii.2016, F. Limeira–de–Oliveira & L.L. Mendes / MYTH 76 (pinned: 1♀ CZMA)GoogleMaps  . PIGoogleMaps  [= Piauí], Caracol, PARNA  [=Parque Nacional] Serra das Confusões, Riacho dos Bois, 575 m, 09°13′11.9″S, 43°29′26.2″W / Catação em flores, 29.vi–03.vii.2014, J.A. Rafael, F. Limeira–de–Oliveira & T.L. Rocha (in alcohol: 5♂ CZMA, 5♂ INPA)GoogleMaps  . idem, Guaribas, PARNAGoogleMaps  [=Parque Nacional] Serra das Confusões, Andorinha , 515 m, 09°08′27″S, 43°33′42″W / Ar- madilha de Malaise, 01–15.vii.2013, JAR, FLOGoogleMaps  & T.T.A. Silva, cols. (in alcohol: 1♂ CZMA)  ; idem, 20–30.vi.2014 / MYTH 84  (pinned: 1♀ CZMA)  .

Geographical record. This species is known only from the Brazilian states of Maranhão and Piauí ( Fig. 69View FIGURE 69), where the type series was collected in the Cerrado and Caatinga biomes.

Remarks. Pieza bittencourti  sp. nov. is similar to P. parakake  sp. nov. in having gonostyli trifurcate in ventral view ( Figs 22View FIGURES 18–26, 31View FIGURES 27–34). Pieza bittencourti  sp. nov. differs from P. parakake  sp. nov. in the ejaculatory apodeme with suboval ventro-medial projection in lateral view ( Fig. 23View FIGURES 18–26) (ejaculatory apodeme with subquadrate ventromedial projection in P. parakake  sp. nov. in lateral view, Fig. 32View FIGURES 27–34); gonocoxites with anteroventral margin not protuberant ( Fig. 24View FIGURES 18–26) (gonocoxites with anteroventral margin protuberant in P. parakake  sp. nov. in anteroventral view, Fig. 33View FIGURES 27–34).

AA

Ministry of Science, Academy of Sciences

BPBM

Bishop Museum

INPA

Instituto Nacional de Pesquisas da Amazonia

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

PI

Paleontological Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Bombyliidae

Genus

Pieza