Macrostomus paraiba Rafael & Cumming, 2015

Sena, Jasmine Déa Nogueira, Rafael, José Albertino & Limeira-De-Oliveira, Francisco, 2024, Four new species and new records of Macrostomus Wiedemann (Diptera: Empididae) from Northern and Northeastern Regions of Brazil, Zootaxa 5492 (1), pp. 25-51 : 31-32

Macrostomus paraiba Rafael & Cumming

urn:lsid:zoobank.org:act:1FD47671-2400-457D-91B1-1DD0565D89AE

( Figs 22–41 )

Macrostomus paraiba Rafael & Cumming, 2015: 115 (description, species-group).

Diagnosis. Predominantly light brown to black specimens ( Fig. 22 ). Head ( Figs 23, 24 ) with frons and face shiny black. Thorax with 4 dorsocentral setae. Wing ( Fig. 25 ) almost hyaline, except distal 1 / 5 of cell r 2+3, including distal pterostigma and ¼ of cell r 4+5, brown. Tergite 8 with rectangular sinuosities distally and basally ( Fig. 27 ); sternite 8 with deep V-shaped sinus in basal margin ( Fig. 28 ). Male terminalia ( Figs 26–36 ), with posterior cercus vertically elongated, with basal projection with stout, long setae and pair of thin, elongated subdistal projections ( Figs 29, 31, 32 ). Hypandrium with subdistal protuberance in posterior margin and apex with a pair of slightly sclerotized and outwardly curved projections in posterior view ( Figs 35, 36 ). Female with pennate setae dorsally and ventrally on the hind tibia ( Fig. 37 ). Female terminalia ( Figs 38–41 ) brown to black, tergite and sternite 8 almost same, with a pair of lateromedian depressions on sternite 8. Genital fork ( Fig. 41 ) subtriangular, small, without lateral arms; membranous genital chamber with a pair of sclerotinized spots.

Material examined. Brazil, MA [= Maranhão], C.[=Centro] N. [=Novo] [do] Maranhão, REBIO-Res. [=Reserva] Biol. [=Biológica] [do] Gurupi , 03°14'01"S- 46°40'52"W \ Armadilha MALAISE ( Grande ), 20– 31.xii.2021, F. Limeira-de-Oliveira, A. Tôrres & E.S. Pessoa, cols [=collectors] / PROTAX\ FLO 6611 ; idem \ 1–14.ii.2022 , idem \ FLO 6610 (left wing lost, terminalia in microtube) (1♂, MNRJ) ; idem \ 1–10.i.2022 , idem \ FLO 6599 (terminalia in microtube) (1♂, CZMA) ; idem \ 10–20.i.2022 , idem \ FLO 7520 (left wing, hind leg and terminalia in microtube) (1♀, CZMA) ; idem \ FLO 6598 (wings and terminalia in microtube) (1♂, CZMA) ; idem \ FLO 6600 (1♂, MPEG) ; idem \ 15–31.iii.2022 , idem \ FLO 5577(1♀, CZMA) ; idem, C. [=Cândido] Mendes, Fazenda 7 Irmãos , 01°52'06"S- 45°45'59.7"W \ Armadilha MALAISE, 1–15.iv.2019, F. Limeira-de-Oliveira, D. Limeira & J.S. Brito, cols [=collectors] \ FLO 8385 (1♂, CZMA) ; idem \ 15–31.iii.2019 , idem \ FLO 6601 (1♀, MZUSP) ; idem \ FLO 6612 (1♂, CZMA) .

Variation. Male (n=6): body length 3.0– 3.7 mm, wing length 2.6–2.9 mm. Specimens light brown; legs slightly more whitish or light yellow. Thorax with 3–4 dorsocentral setae.

Geographical records. BRAZIL (Maranhão (new record), Paraíba).

Seasonal record. From December to April.

Bionomic. Atlantic Forest and Amazon Biome (new record).

Remarks. This is the only species that has previously been recorded for the Brazilian Northeast, in the Atlantic Forest. Macrostomus paraiba Rafael & Cumming was collected in Cândido Mendes (December to April) and Centro Novo do Maranhão (March to April).

Figures

FIGURES 22–26. Macrostomus paraiba Rafael & Cumming, ♂. 22. habitus, lateral view; 23. head, dorsal view; 24. head, ventral view; 25. wing; 26. apex of abdomen, lateral view. Scale bars, figures 22–25= 0.5 mm; 26= 0.1 mm.

FIGURES 27–36. Macrostomus paraiba Rafael & Cumming, ♂. 27. tergite 8, dorsal view; 28. sternite 8, ventral view; 29. terminalia, left lateral view, without left epandrium; 30. cerci, posterior view; 31. terminalia, right lateral view; 32. detail cercus; 33. epandrium, detached, lateral view; 34. cercal bridge, dorsal view; 35. hypandrium and phallus, lateral view; 36. hypandrium, ventral view. Scale bars, figures 27–36= 0.1 mm.

FIGURES 37–41. Macrostomus paraiba Rafael & Cumming, ♀. 37. hind leg; 38. apex of the abdomen, lateral view; 39. tergite 8, dorsal view; 40. sternite 8, ventral view; 41. genital fork and genital chamber, dorsal view. Scale bars, figures 37–41= 0.1 mm.