Hirtodrosophila fluminensis, Frech-Telles & Valente-Gaiesky & Gottschalk, 2023

Frech-Telles, Marcos Henrique, Valente-Gaiesky, Vera Lúcia da Silva & Gottschalk, Marco Silva, 2023, Three new Neotropical species of Hirtodrosophila Duda, 1923 (Diptera: Drosophilidae), Revista Brasileira de Entomologia (e 20230083) 67 (4), pp. 1-15 : 5-8

Hirtodrosophila fluminensis n. sp.

urn:lsid:zoobank.org:act:0C38B9FA-D84E-45D5-8EC4-32ADCC1C709D ( Figs. 3 , 4 , 9b , 10 )

Material examined.

Holotype: male, labelled “BRA [= Brazil] – RJ [State of Rio de Janeiro] – PARNA [= National Park ] de Itatiaia (22°26’09.58”S, 44°36’28.1”W) Data: 21.xii.2020 - 04.i.2021 Col.: Telles MHF; Vicenzi N OBS.: Armadilha [= Trap] Malaise ” ( Fig. 10 ), “ Hirtodrosophila fluminensis n. sp. Frech-Telles, Valente-Gaiesky, Gottschalk, ♂ Holotype ” . Holotype condition: Right fore leg (except for the coxa) glued on the triangle.

Diagnosis.

Flies tan and yellow with brown marks. Frons silvery pollinose. Abdomen yellow with brown marks. Wings with black, apically pointy, costal lappet. Phallus thick in lateral view, ornamented with scale-like micro-structures dorsally; phallotrema section diamond-shaped, twice as wide as long in ventral view, concave on lateral margins of phallotrema in lateral view.

Description.

Holotype. Head ( Fig. 3a, 3c ): yellow, with brown marks. Eyes reddish, pubescent. Face yellow, dark under the antennae with a narrow prominent light yellow facial carina. Antennal scape covered; pedicel light yellow, basally darker; flagellomere 1 yellow, compressed; arista with seven to eight dorsal branches, one ventral branch, and terminal fork. Fronto-orbital plate yellow, darker posterior of p rc frorb s; fronto-orbital setae black; pc frorb s situated laterally and slightly anterior of a rc frorb s; distance between pc frorb s and a rc frorb s = 0.02 mm, between pc frorb s and p rc frorb s = 0.10 mm, and between a rc frorb s and p rc frorb s = 0.09 mm; frontal vitta brown, lighter near the ptilinal suture; frontal triangle brown, small; ocellar triangle black, prominent; postocellar setae black, crossing. Genae yellow, darker at the ventral margin and under the eye near the vibrissae, dark spot at the base of vibrissae. Palpus tan, large; labrum light yellow, with dark marks; labellum brown. Thorax ( Fig. 2b, 2c ): yellow, with brown marks; v-1 greyish, fine; v-2 light brown; v-3 brown; v-4 light brown; v-5 brown, faint; v-6 light brown; v-3 are convergent at the height of anterior dorsocentral setae and parallel at the height of posterior dorsocentral setae; v-5 are convergent at the posterior dorsocentral setae and fused with v-3 near the posterior margin; transverse suture brown; six semi-regular rows of acrostichal setulae that are irregular and scarcer progressively posterior of the height of the anterior dorsocentral setae; anterior dorsocentral setae about 1/2 the length of the posterior dorsocentral setae; longitudinal dorsocentral setae distance about half the length of transversal dorsocentral setae distance; anterior dorsocentral setae placed slightly closer to the transversal suture than to the posterior end of scutum. Postpronotum light yellow with a darker spot at its center. Scutellum yellow, with brown mark at the anterior margin not reaching the lateral margin, slightly darker at setae base; basal scutellar setae converging, almost parallel, slightly curved inwards; apical scutellar setae curved inwards, crossing. Pleura yellow with three dark brown bands, one at the dorsal margin of proepisternum and anepisternum, one medially on the anepimeron, and one formed at the dorsal half of katepisternum advancing posteriorly. Legs yellow; mid and hind femora with slightly darker ring medially. Wings ( Fig.3f ): hyaline; faint darker patch present bellow costal lappet. R 4+5 and M 1 parallel; R 2+3 slightly curved to costal at its tip. Halter light yellow. Indices: C = 2.06, ac = 3.24, hb = 0.76, 4c = 1.48, 4v = 2.76, 5x = 2.61, M = 1.02, prox. x = 0.63; measurements: length = 2.38 mm, width = 1.10 mm. Abdomen ( Fig. 3d, 3e ): T 1 faint brown, with sub-lateral yellow patches, laterally brown; T 2 brown, with sub-lateral yellow patches, a small yellow spot at the anterior margin sub-lateral of the central brown area, yellow spot medially at the anterior margin; T 3 brown, with sub-lateral yellow patches, round yellow mark at the anterior margin sub-lateral of the central brown area; T 4 same as T 3 but the round yellow marks are larger; T 5 same as T 6 but the round yellow marks are larger; T 6 yellow, with round faint brown caudal mark medially, laterally brown; sternites light yellow. Intersegmental membranes light. Terminalia ( Fig.4 ): epandrium as wide as long, with microtrichia and 12 upper setae and eight lateral setae; ventral lobe short, broad, without microtrichia, with approximately six long setae. Cerci not fused to epandrium, with microtrichia and with very long setae, hypoproctal plate present, ventral cecal plate large with at least three setae. Subepandrial sclerite sclerotinized. Surstyli wide, with a small inward projection; two lines of 3 prensisetae, one of them in the previously mentioned projection; about 15 inner conspicuous setae. Hypandrium almost as wide as it is long, smaller than epandrium. Pregonites fused to the hypandrium, fused to each other, with a seta near postgonite. Postgonites thick, with three setae near the fusion with pregonite. Phallapodeme straight, shorter than phallus. Body length: 2.43mm.

Etymology.

Named in reference to the State of Rio de Janeiro,where the holotype was collected .

Figures

Figure 2 Holotype of Hirtodrosophila pilosa n. sp.: a, posterior end of abdomen (ventral view); b, posterior end of abdomen (lateral view); c, articulated periphallic and phallic organs (posteroventral view); d, articulated periphallic and phallic organs (lateral view); e, epandrium and associated sclerites (posterolateral view); f, epandrium and associated sclerites (ventral view); g,hypandrium,phallus and associated sclerites(ventral view);h, hypandrium,phallus and associated sclerites (lateroventral view);i, hypandrium,phallus and associated sclerites (lateral view).Scale bars:0.1 mm.Abbreviations:cerc,cercus;epand,epandrium;hpp,hypoproctal plate;hypd,hypandrium; pgt,postgonite;ph,phallus; phapod, phallapodeme; pregt, pregonite; sur, surstylus; sbepand scl, subepandrial sclerite; vcl, ventral cecal lobe; vpl, ventral epandrial lobe.

Figure 3 Holotype ofHirtodrosophila fluminensis n.sp.:a,head (anterolateral view); b, thorax (dorsal view);c, head and thorax (lateral view);d, abdomen (lateral view);e,abdomen (dorsal view); f, wing.

Figure 4 Holotype of Hirtodrosophila fluminensis n. sp.: a, posterior end of abdomen (ventral view); b, posterior end of abdomen (lateral view); c, articulated periphallic and phallic organs (posteroventral view); d, articulated periphallic and phallic organs (lateral view); e, epandrium and associated sclerites (posterior view); f, hypandrium (ventral view); g,phallus and associated sclerites (ventral view);h,phallus and associated sclerites (lateroventral view); i,phallus andassociated sclerites (lateral view).Scale bars:0.1 mm.

Figure 9 Habitus: a, holotype of H. pilosa n. sp.; b, holotype of H. fluminensis n. sp.; c, holotype of H. brasiliensis n. sp.; d-e, paratypes of H. brasiliensis n. sp.; f, H. sp.1. Scale bars: 1 mm.

Figure 10 Map showing the collection records of H.pilosa n.sp.,H.fluminensis n.sp.,H.brasiliensis n.sp., and H.sp.1.