Itatingamyia couriae, Haseyama, Kirstern L. F. & De, Claudio J. B., 2011

Haseyama, Kirstern L. F. & De, Claudio J. B., 2011, A new species of the Neotropical genus Itatingamyia Albuquerque (Diptera: Muscidae), Zootaxa 2915, pp. 61-65 : 62-64

Itatingamyia couriae , sp. nov.

( Figs. 2–5, 7, 9, 11 )

Diagnosis. This new species can be easily distinguished from I. bivittatta by the presence of three paired grey pruinose stripes on the scutum, and by characters of the male genitalia ( Figs. 4 – 12).

Description. Male. measurements: 6.3 mm (body length from the head to the posterior tip of the scutelum), 9.5 mm (wing length), 1 mm (distance between the eyes at the level of anterior ocellus).

Color. Parafacial yellow to light brown with silver pruinosity; gena, proboscis and palpus yellow to light brown; postpedicel brown with silver pruinosity; arista yellow to light brown on basal fourth and reddish-brown apically; frontal vitta reddish-brown with minute silver setulae; ocellar triangle and fronto-orbital plate reddishbrown. Thorax laterally, humeral callus, notopleuron and legs yellow to light brown; scutum dark brown with three silver pruinose stripes. Lower calypter yellowish; upper calypter hyaline with darkened borders; wing mostly hyaline yellowish, slightly darkened on upper third; abdomen yellowish to light brown with a median brown stripe that extends to the distal borders of the tergites, but tergite five brown with yellowish apex; claws brown with black apex.

Head. Dichoptic, fronto-orbital plates not in contact; eye with short, sparse setulae; anterointernal ommatidia slightly larger than remaining ommatidia; postpedicel ending before insertion of vibrissa; parafacial setulose on ventral half; proboscis retractile; facial ridge projecting, partially hiding postpedicel in lateral view; parafacial bare; frontal vitta bare; fronto-orbital plate with a few setulae; vibrissa inserted below the ventral margin of the eye and fully developed, twice as long as subvibrissal setae; inner vertical setae convergent; outer vertical setae absent; postocular setae divergent, almost as long as inner vertical setae; upwardly curved setae on gena absent; ocellar triangle short, not reaching half the length of frontal vitta; arista setulose; ventral hairs of arista present; secondary setulae on inner-dorsal surface of arista absent; palpus cylindrical.

Thorax. Scutum regularly covered by setulae; acrostichal setae 0:1; dorsocentral setae 2:3; parahumeral seta present but weakly developed; posthumeral seta present; presutural seta present, twice as long as posthumeral seta; notopleuron with 2 setae and sparsely covered with setulae; prealar seta absent; supra-alar setae 2; intra-alar seta 1; postsupra-alar setae 2; intrapostalar seta present, weakly developed; basal scutellar setae: 1 pair; lateral scutellar setae: 1 pair, twice as long as basal pair; preapical scutellar setae: 1 pair, the same size as basal pair; apical scutellar setae: 1 pair, the same size as lateral pair; proespisternum: 2 upwardly curved setae and with a few spaced setulae; proepimeron with a few ground-setulae; anepimeron (ventral portion), anatergite, katatergite, katepimeron, meron, greater ampulla, post-alar wall, supra-squamal ridge, and membrane between anepimeron and lower calypter bare; anepimeron (dorsal portion), katepisternum and lateral portion of scutellum setulose; katepisternal setae 1:2, not making an equilateral triangle; anepisternum with a row of 8 setae, bearing setulae posteriorly and on anterodorsal corner; metathoracic spiracle larger than halter knob and setulose on posterior margin; metakatepisternum with a few weak setulae; lateral basal membrane connecting upper and lower calypters absent; lower calypter glossiform.

Wing. Subcostal vein sinuous; A1+CuA2 long, almost reaching the posterior margin of the wing; A2 curve smooth; subcostal sclerite bare; distal portion of M straight, subparallel to R4+5; microtrichia present over the entire membrane; all veins bare, except for costal vein.

Abdomen. First sternite setulose on disc and margin.

Legs. Fore femur with a complete row of setae on posterodorsal, dorsal and posteroventral surfaces; fore tibia with golden setulae covering anteroventral surface, 2–3 median to submedian anterodorsal setae and 1 distal posterodorsal seta; fore tarsus with sensorial seta developed. Mid femur with 2 posterodorsal subapical setae, 3 proximal and 6 distal posteroventral setae; mid tibia with 3 posterior median setae and strong distal setae on anteroventral, ventral and posteroventral surfaces; mid tarsus as fore tarsus. Hind coxa bare on posterior surface; hind femur with an anteroventral row of setae on distal half, an almost complete anterodorsal row of setae, a subapical posterodorsal seta and an irregular posteroventral row of setae; hind tibia with a strong submedian anteroventral seta, a submedian, a stronger median and a strong distal setae on anterodorsal surface, a weak submedian and a strong median setae on posterodorsal surface; calcar undifferentiated; hind tarsus similar to the fore tarsus.

Female. Unknown.

Type material. Holotype, male. Labels: White rectangular printed label “BIOTA-FAPESP [written vertically in the left side] / BRASIL: ES: Santa Teresa / Est. Biológica Santa Lúcia – 867m / 19 58 37 3 S 40 32 22 5 W / Arm. Malaise – Ponto 1 – Trilha / 9-12 IV 2001 / C.O. Azevedo & eq. col.”, a white label “ aff. Charadrella [handwritten] / S.S. Nihei det. 200 [printed]”, and a red rectangular with black frame printed label “Holotipo” was added to the specimen ( MZUSP).

Geographic distribution. Brazil (Espírito Santo state).

Etymology. The species name honors Márcia Souto Couri (Museu Nacional do Rio de Janeiro, Rio de Janeiro, Brazil) for her important contributions to muscid taxonomy.

Figures

FIGURES 1 – 3. 1. Itatingamyia bivittata, paratype female, dorsal habitus. 2 Itatingamyia couriae sp. nov., holotype male, lateral habitus 3. Itatingamyia couriae sp. nov., holotype male, dorsal habitus.

FIGURES 4 – 11. Male terminalia. 4. Itatingamyia couriae sp. nov., fifth sternite, dorsal view. 5. I. couriae sp. nov., epandrium, surstylus and cercal plate, dorsal view. 6. I. bivittata, surstylus and cercal plate, dorsal view. 7. I. couriae sp. nov., epandrium, surstylus and cercal plate, lateral view. 8. Same, I. bivittata. 9. I. couriae sp. nov., hypandrium, posterior view. 10. Same, I. bivittata. 11. I. couriae sp. nov., aedeagus, lateral view. 12. Same, I. bivittata.