Tachydromia lusitanica ( Grootaert, Shamshev & Andrade, 2009 )

Gonçalves, Ana Rita, Grootaert, Patrick, Andrade, Rui, Paulo, Octávio S. & Mengual, Ximo, 2021, Revision of the morphology, phylogenetic relationships, behaviour and diversity of the Iberian and Italian ant-like Tachydromia Meigen, 1803 (Diptera: Hybotidae), European Journal of Taxonomy 732, pp. 1-56 : 27-28

Tachydromia lusitanica ( Grootaert, Shamshev & Andrade, 2009)

Figs 1 , 9 , 15 A–B, 17 A–B, 19 A, 20 E–F

Ariasella lusitanica Grootaert, Shamshev & Andrade, 2009: 45 .

Tachydromia lusitanica Shamshev & Grootaert 2018: 425 (comb. nov.).

Diagnosis

Small (2.25–2.40 mm (n = 3)), slender, dark and hirsute species. Wing dimorphic: male stenopterous; bilobed distal apex, with very long digitation on distal margin ( Fig. 20E ). Stalk-like process dark brown on basal half, pale on distal half; lobed apex mostly black, digitation hyaline with black distal ½ margin. Female micropterous, wing bilobate, squamiform, apical margin of each lobe bearing setae – the posterior lobe has 2 long setae and the anterior one 2 short setae ( Fig. 20F ). Wing veins not distinguishable in either sex. Occiput largely covered by grey microtrichia; 1 pair of long lateroclinate ocellars; 1 pair of proclinate verticals; palpi, proboscis and antennae black; postpedicel lanceolate, 2.5 times as long as pedicel; stylus 2 times as long as scape, pedicel and postpedicel combined. Thorax black with episternum densely covered with grey microtrichia, appearing sub-triangular in lateral view. Postpronotal lobe bearing 7 setae laterally, ca 9 acrostichal setae, irregular biseriate, of equal length; notopleuron with 1 strong, prominent seta plus 5 small setae; 2 strong prescutellar setae present laterally; scutellum with 2 similar setae medially. Legs mainly dark with pattern of yellow and brown to black; male fore tibia with dense ciliation of long hair-like setae; male mid with anteroventral apical spur produced into a barely noticeable apical elongation, about as long as diameter of tibia at apex ( Fig. 19A ); spur has several distinct setae and, on the distal half margin, 4 short, stout, curved, spinose setae. Abdomen black, tergites and sternites overall uniformly covered by grey microtrichia and long setae; apical sternites with longer setae. Terminalia ( Fig. 9 ) subglobular, mostly covered with grey microtrichia, dark brown. Right surstylus produced into short projection, bearing long setae at the lateral margins and ca 11 denticles. Right cerci slightly longer than left, both enclosed in epandrial lamellae. Left epandrial lamella bilobed.

Type material examined

Holotype PORTUGAL • 1 ♂; Barcelos, Gilmonde ; 41º30′42.54″ N, 8º38′57.33″ W; 8 Mar. 2008; R. Andrade leg.; RBINS.

Paratypes PORTUGAL • 2 ♂♂; Barcelos, Gilmonde ; 41º30′42.54″ N, 8º38′57.33″ W; 8 Mar. 2008; R. Andrade leg.; RBINS • 1 ♂, 3 ♀♀; same collection data as for preceding but 9 Mar. 2008; R. Andrade leg.; RBINS • 1 ♂; same collection data as for preceding but 17 Feb. 2009; R. Andrade leg.; RBINS • 1 ♂ same collection data as for preceding but 18 Feb. 2009; R. Andrade leg.; RBINS • 3 ♂♂, 3 ♀♀; same collection data as for preceding but 23 Feb. 2009; R. Andrade leg.; RBINS .

Additional material examined

PORTUGAL • 1 ♂; Barcelos, Gilmonde ; 41º30′42.54″ N, 8º38′57.33″ W; 28 Jan. 2013; R. Andrade leg. • 4 ♂♂, 1 ♀; Vila Nova de Gaia , Avintes; 41°06′00.0″ N, 8°33′35.3″ W; 23 Feb. 2013; R. Andrade leg. • 5 ♂♂, 5 ♀♀; same collection data as for preceding; ZFMK • 1 ♂; Barcelos , Gilmonde; 41º30′42.54″ N, 8º38′57.33″ W; 23 Feb. 2015; R. Andrade leg. • 1 ♂; same collection data as for preceding but 24 Feb. 2015 • 1 ♂, 1 ♀; same collection data as for preceding but 25 Feb. 2015 • 4 ♂♂, 6 ♀♀; same collection data as for preceding but 15 Apr. 2015 • 10 ♂♂, 8 ♀♀; same collection data as for preceding but 16 Apr. 2015 • 7 ♂♂, 3 ♀♀; Valongo , Valongo; 41º09′33.44″ N, 8º29′05.6″ W; 21 Feb. 2016; R. Andrade leg. • 2 ♂♂, 1 ♀; Arcos de Valdevez , Miranda; 41°49′49.1″ N, 8°29′37.5″ W; 8 Apr. 2017; R. Andrade and J. Almeida leg. • 10 ♂♂, 9 ♀♀; Arcos de Valdevez , Miranda; 41°50′49.6″ N, 8°29′27.9″ W; 8 Apr. 2017; R. Andrade and J. Almeida leg. • 5 ♂♂, 9 ♀♀; Paredes de Coura , Vascões; 41°53′50.4″ N, 8°29′33.2″ W; 8 Apr. 2017; R. Andrade and J. Almeida leg. • 2 ♂♂, 3 ♀♀; Arcos de Valdevez , Rio Frio; 41°51′51.7″ N, 8°30′21.4″ W; 8 Apr. 2017; R. Andrade and J. Almeida leg. • 1 ♂, 3 ♀♀; Fafe , Travassós; 41°30′13.4″ N, 8°09′52.7″ W; 9 Apr. 2017; R. Andrade and J. Almeida leg. • 5 ♂♂, 9 ♀♀; Fafe , Travassós; 41°30′06.4″ N, 8°10′55.6″ W; 9 Apr. 2017; R. Andrade and J. Almeida leg. • 3 ♂♂, 6 ♀♀; Fafe , Felgueiras; 41°31′24.0″ N, 8°06′01.2″ W; 9 Apr. 2017; R. Andrade and J. Almeida leg. • 2 ♀♀; Maia , Gemunde; 41°16′42.6″N, 8°38′09.4″W; 10 March 2019; C. Silva leg.

SPAIN • 1 ♂, 1 ♀; Galiza, Parque Natural Monte Aloia ; 42°04′22.0″ N, 8°40′45.8″ W; 4 May 2018; A.R. Gonçalves leg. • 2 ♂♂; Galiza, Pontevedra, Tui ; 42°27′59.9″ N, 8°28′09.7″ W; 4 May 2018; A.R. Gonçalves leg. • 4 ♂♂, 3 ♀♀; Galiza, Pontevedra, Carballeira do Río Xesta ; 42°23′18.3″ N, 8°22′36.3″ W; 4 May 2018; A.R. Gonçalves leg. • 1 ♂, 3 ♀♀; Galiza, Pontevedra, Carballeira de San Xusto ; 42°31′02.9″ N, 8°30′42.6″ W; 4 May 2018; A.R. Gonçalves leg. • 2 ♂♂; Galiza, Cascada del Río Barosa ; 42°33′24.4″ N, 8°37′45.0″ W; 4 May 2018; A.R. Gonçalves leg. • 2 ♂♂, 8 ♀♀; Galiza, Lugo, Muras ; 43°27′27.3″ N, 7°46′31.5″ W; 6 May 2018; A.R. Gonçalves leg. • 9 ♂♂, 5 ♀♀; Galiza, Bosque de Fervenza ; 42°53′22.7″ N, 7°31′09.5″ W; 7 May 2018; A.R. Gonçalves leg. • 5 ♂♂, 8 ♀♀; Galiza, Fraga de Catasós ; 42°38′18.3″ N, 8°05′45.3″ W; 7 May 2018; A.R. Gonçalves leg. • 3 ♂♂, 1 ♀; Galiza, Ourense, Piñor ; 42°31′17.3″ N, 8°00′14.3″ W; 7 May 2018; A.R. Gonçalves leg.

Distribution

Spain and Portugal. Restricted to the northwest of the Iberian Peninsula.

Figures

Fig. 1. Currently known distribution of the Iberian ant-like Tachydromia Meigen, 1803. Each dot represents a presence point, with each colour corresponding to a different species. When two species co-occur in the same area, their presence is represented by a smaller dot on top of a dot of regular dimension, each of those with the colour corresponding to the co-occurring species. The dots surrounded by a black circle with a vertical line represent localities previously known.

Fig. 9. Terminalia of the holotype of Tachydromia lusitanica (Grootaert, Shamshev & Andrade, 2009) from Portugal, Braga, Gilmonde (RBINS). A. Right surstylus.B. Epandrium with cerci.C. Left epandrial lamella and left surstylus. Figure adapted from Grootaert et al. 2009.

Fig. 15. Habitus of live specimens of the Iberian ant-like Tachydromia Meigen, 1803. Males are pictured in the left column, females in the right. A–B. T. lusitanica (Grootaert, Shamshev & Andrade, 2009). C–D. T. nigrohirta Gonçalves, Grootaert & Andrade sp. nov. E–F. T. ebejeri Gonçalves, Grootaert & Andrade sp. nov. G–H. T. stenoptera Gonçalves, Grootaert & Andrade sp. nov. I–J. T. cantabrica Gonçalves, Grootaert & Andrade sp. nov.

Fig. 17. Mounted specimens of the Iberian ant-like Tachydromia Meigen, 1803. Males are pictured in the left column, females in the right. A–B. T. lusitanica (Grootaert, Shamshev & Andrade, 2009). C–D. T. nigrohirta Gonçalves, Grootaert & Andrade sp. nov. E–F. T. ebejeri Gonçalves, Grootaert & Andrade sp. nov. G–H. T. stenoptera Gonçalves, Grootaert & Andrade sp. nov. Scale bars: 1 mm.

Fig. 19. Images obtained by scanning electron microscopy of the spur-like structures present on the apical portion of the male mid tibia. A. T. lusitanica (Grootaert, Shamshev & Andrade, 2009). B. T. pandellei (Séguy, 1941). C. T. pieltaini (Gil Collado, 1936). D. T. ebejeri Gonçalves, Grootaert & Andrade sp. nov. E–F. T. semiaptera (Gil Collado, 1923). G. T. stenoptera Gonçalves, Grootaert & Andrade sp. nov. H. T. cantabrica Gonçalves, Grootaert & Andrade sp. nov. I. T. nigrohirta Gonçalves, Grootaert & Andrade sp. nov. J. T. apterygon Plant & Deeming, 2006. Scale bars: 10 µm.

Fig. 20. Drawings of the tip of stenopterous wings and images obtained by scanning electron microscope (SEM) of the micropterous wings. Males are pictured in the left column, females in the right. A–B. T. ebejeri Gonçalves, Grootaert & Andrade sp. nov. C–D. T. cantabrica Gonçalves, Grootaert & Andrade sp. nov. E–F. T. lusitanica (Grootaert, Shamshev & Andrade, 2009). G–H. T. nigrohirta Gonçalves, Grootaert & Andrade sp. nov. Scale bars: A–B, D, F, H = 10 µm; C, E, G = 50 µm.