Hirtodrosophila sp.1

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 : 8-12

Hirtodrosophila sp.1

( Figs. 7 , 8 , 9f , 10 )

Material examined.

1 female, labelled “ Brasil, Amazonas, Brasil, ZF-2 [Experimental station], Km-14, 2°35’21”S; 60°06’55”W, 9-24/ii/2018, Malaise [Trap] grande, Solo [the trap was placed on the ground], Nascente [=spring], JA Rafael - Rede BIA [= Thematic network “ Biodiversity of Insects in the Amazon ”]” ( Fig. 10 ). Specimen condition: Right wing removed, scutellar apical setae missing .

Diagnosis.

Head with its ventral half entirely light yellow except for the labellum; abdomen with yellow, black and brown tergites.

Description.

Head ( Fig. 7a ): dorsal half brown and ventral half light yellow. Eyes red, pubescent. Face dark brown, with a transversal lighter band medially, facial carina brownish.Antennal scape brown; pedicel basally brown and apically lighter; flagellomere 1 dark brown, lighter basally, compressed, mango-shaped; arista with seven dorsal and one ventral branches, and terminal fork. Frons entirely dark brown except for the fronto-orbital plate; fronto-orbital plate yellow, with a brown spot at the base of p rc frorb; fronto-orbital setae black; distance between pc frorb s and a rc frorb s = 0.03 mm, between pc frorb s and p rc frorb s = 0.07 mm, and between a rc frorb s and p rc frorb s = 0.04 mm; frontal vitta dark brown, slightly lighter near ptilinal suture; frontal triangle medium; ocellar triangle darker; postocellar setae black, crossing. Genae light yellow below vibrissae. Clypeus light yellow; palpus light yellow; labrum mostly light yellow, labellum brown. Thorax ( Fig. 7b, 7c ): brown and light yellow; scutum mostly brown, with lighter areas on anterior half; anterior dorsocentral setae smaller than posterior dorsocentral setae; four rows of acrostichal setulae. Postpronotum yellow. Scutellum brown; basal scutellar setae curved inwards. Proepisternum, anepimeron and anepisternum light yellow, with marks forming a continuous, dark brown band on dorsal margin; katepisternum brown, forming a band extending posteriorly. Legs tan; fore coxae light brown; femora with sub-basal dark rings; mid and hind tibiae with two dark rings. Wings ( Fig. 7f ): infuscated, with black, large and broad, apically round costal lappet. Faint darker patch present bellow costal lappet. R 4+5 and M 1 slightly divergent. Halter brown, apically yellow. Indices: C = 1.18, ac = 3.72, hb = 1.14, 4c = 1.81, 4v = 2.49, 5x = 2.31, M = 0.81, prox. x = 0.46; measurements: length = 1.76 mm, width = 0.75 mm. Abdomen ( Fig. 7d, 7e ): T1 faint brown; T2 black, with sub-lateral yellow patches; T3 black, with sub-lateral yellow patches, with anterior small faint yellow spots sub-lateral on the brown area, medially faint yellow patch; T4 black, with sub-lateral yellow patches, sub-medial round yellow mark at the anterior margin; T5 black, with sub-lateral faint yellow patches, sub-medial round yellow mark at the anterior margin; T6 and T7 yellow, laterally black. Intersegmental membranes light. Sternites mostly yellow, S7 with microtrichia and with 8 setulae. Terminalia ( Fig. 8 a-8e): T8 with microtrichia on dorsal region. Epiproct and hypoproct with microtrichia and many long or smaller setae. Oviscapt valve sclerotized, long, squarish at tip in lateral view, with 4 large, peg-like ovisensilla on posterior margin, 4 peg-like ovisensilla on apical, ventral margin, and tiny pegs on anterior, ventral margin. Spermathecal capsule sclerotized, dome-shaped; introvert 4/5 as deep as capsule height. Eggs ( Fig. 8f ): chorion only dorsally ornated, with four filaments and micropyle; apical filaments about 1/2 as long as sub-apical; sub-apical filaments 1/2 as long as chorion. Body length: 1.92 mm.

Figures

Figure 7 Hirtodrosophila sp.1: a, head (anterolateral view); b, thorax (dorsal view); c, thorax (lateral view); d, abdomen (lateral view); e, abdomen (dorsal view); f, wing.

Figure 8 Hirtodrosophila sp.1: a, posterior end of abdomen (ventral view); b, posterior end of abdomen (lateral view); c, oviscapt (ventral view); d, oviscapt (lateral view); e, spermatheca (lateral view); f, egg choria (left, dorsal view; right, lateral view).Scale bars:0.1 mm. Abbreviations: b intrvrt, basal introvert; epiprct, epiproct; fl, filament; hyprct, hypoproct; cap, capsule; mcp, micropyle; ovscp vlv, oviscapt valve; spmth dt, spermathecal duct; S7, seventh sternite; T8, eighth tergite.

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.