Noctiliostrebla ecuadorensis, Alcantara & Graciolli & Nihei, 2019

Alcantara, Daniel Maximo Correa, Graciolli, Gustavo & Nihei, Silvio S., 2019, Revision of Noctiliostrebla (Diptera: Streblidae), parasites of bulldog bats (Chiroptera: Noctilionidae: Noctilio), Zootaxa 4560 (3), pp. 483-521 : 502-503

Noctiliostrebla ecuadorensis sp. n.

( Figs 8 , 16A )

Diagnosis. The female is very similar to N. guerreroi sp. n. (described below). The feature that distinguishes females of N. ecuadorensis sp. n. and N. guerreroi sp. n. is the length of the setae on the longitudinal sideband in relation to the length of the setae on the median dorsal connexivum. The male is very similar to that of N. maai , but is easily identified through sternite VI, which is half as wide and longer than half the length of the cercus.

Description. Measurements (mm, n=10, 5 ♂♂, 5 ♀♀). HFL: ♂ 0.42 (0.40–0.43), ♀ 0.48 (0.46–0.51); SL: ♂ 0.51 (0.50–0.53), ♀ 0.55 (0.52–0.59); TL: ♂ 0.47 (0.44–0.49), ♀ 0.50 (0.48–0.53); WL: ♂ 0.26 (0.26–0.28), ♀ 0.28 (0.25–0.32); WW: ♂ 0.16 (0.16–0.18), ♀ 0.16 (0.15–0.17).

Thorax. Mesepimeron with 1–2 setae on each side. Wing with 0–2 setae on median vein. Metasternum ( Fig. 8B, E ) like in N. maai .

Female abdomen. Syntergite I+II ( Fig. 8A ) like in N. maai , except 25–32 setae on each plate of lateral lobe. Dorsal connexivum ( Fig. 8A ) with a cluster of setae around spiracle III, setae anterior to spiracle III longer than but not twice the length of setae posterior to spiracle III, and longest setae half the length of longest setae on syntergite I+II; longitudinal sideband extending beyond outer lateral margin of spiracle and centered at spiracle, with 4–5 rows of setae, the longest setae half the length of longest setae on cluster of setae around spiracle III and twice as long as longest setae on median dorsal connexivum; 1–2 setae near inner side of spiracle V, longer than but not twice as long as longest setae on longitudinal sideband; lateral and median pairs of setae between each spiracle VI similar to those in N. traubi . Tergite VII ( Fig. 8A, C ) like in N. maai , except inner lateral margin longer than lateral margin of epiproct but not twice the length; 5–6 setae on each plate. Sternite II ( Fig. 8B ) like in N. aitkeni , except posterior margin straight or slightly emarginate. Sternite VII with 8–10 setae on each plate. Epiproct ( Fig. 8A, C ) like in N. maai , except anteromedial setae shorter than posterior setae but longer than half their length.

Male abdomen. Syntergite I+II like N. maai , except 29–34 setae on each plate of lateral lobe. Ventral connexivum like in N. maai . Sternite II ( Fig. 8E ) like in female. Hypopygium ( Fig. 8 D–E) with setae on ventral margin like in N. dubia ; sternite VI very thin, shorter than cercus but longer than half its length, apical margin half the width of cercus. Genitalia ( Fig. 8 F–H) similar to N. maai .

Distribution. Ecuador ( Fig. 16A ).

Type locality. Ecuador, Sucumbios, Zábalo .

Host. Noctilio albiventris .

Type material. HOLOTYPE ♀: Ecuador: “ HOLOTYPE ♀ / Noctiliostrebla ecuadorensis / Alcantara, Nihei & Graciolli”, “FMNH / Host. N. albiventris Desmarest / ♂♂, ♀♀ / Ecuador, Sucumbios: Zabalo; Criollo family’s property / 0°19’5.16”S, 75°45’58.32”W / 11.iii.2004 / J.S. Tello leg. / QCAZ 6977”, “Ex QCAZ 6977 JSTV 326 / Noctilio albiventris (H)”, “Ecuador-Sucumbios, 233m 11/3/2004 / Zábalo—Casa de la Familia Criollo (An / Coo, 18M 04147409964835” ( FMNH) . PARATYPES (8♂♂, 5♀♀): Ecuador : 4 ♂♂, 3 ♀♀, same data as holotype ( FMNH) ; 4 ♂♂, 2 ♀♀, Pastaza, Villano B camp, (owned by AGIP), Lliquino river , 1°27’10.08”S, 77°26’32.28”W, 26/i/2008, on N. albiventris ( FMNH) .

Etymology. The specific epithet is a reference to Ecuador, the only country with records of the species so far.

Figures

FIGURE 8. Noctiliostrebla ecuadorensis sp. n., holotype ♀ (FMNH) and ♂♂ paratypes (Ecuador, Sucumbios, Zabalo, FMNH). A. Female abdomen in dorsal view. B. Detail of posterior portion of female thorax and abdomen in ventral view, showing metasternal lobe and sternite II. C. Female tergite VII (with setae insertions) and epiproct in dorsal view. D. Detail of male abdomen in ventrolateral view, showing hypopygium. E. Detail of posterior portion of male thorax and abdomen in ventral view, showing metasternal lobe, sternite II and hypopygium. F. Male genitalia in lateral view. G. Distal portion of gonopod in lateral view. H. Distal portion of aedeagus in lateral view.

FIGURE 16. Distributional maps of Noctiliostrebla species (continued). A. N. ecuadorensis sp. n. B. N. guerreroi sp. n. C. N. falsispina sp. n. D. N. lamasi sp. n.