Tachydromia ebejeri Gonçalves, Grootaert & Andrade, 2021

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 : 21-23

Tachydromia ebejeri Gonçalves, Grootaert & Andrade sp. nov.

urn:lsid:zoobank.org:act:1FF1B253-96ED-46A8-B8EB-1822B9789B2A

Figs 1 , 5 , 15 E–F, 17 E–F, 19 D, 20 A–B, 25

Diagnosis

Overall dark. Micropterous, with minute squamiform wings in both sexes. Palpi, proboscis and antennae black; postpedicel lanceolate, ca 1.5 times longer than pedicel. Legs with a colour pattern of yellowish and dark brown to black; fore tibia with ciliation of long hair-like setae. Abdomen black, covered with grey microtrichia and with distinct, strong, setae on posterior margin of first sternite. It shares general similarities with T. cantabrica sp. nov., T. stenoptera sp. nov. T. nigrohirta sp. nov. and T. lusitanica , from which it can be mainly distinguished by microptery in both sexes - while the males of the other species are stenopterous - and male terminalia.

Etymology

The species is named after the dipterologist Martin J. Ebejer for his contribution to the advancement of the knowledge on Portuguese Diptera .

Material examined

Holotype PORTUGAL • 1 ♂; Marvão, Santa Maria de Marvão ; 39º23′49.2″ N, 7º21′51.4″ W; 14 Mar. 2015; A.R. Gonçalves and R. Andrade leg.; RBINS.

Paratypes PORTUGAL • 3 ♂♂, 3 ♀♀; Marvão, Santa Maria de Marvão ; 39º23′49.2″ N, 7º21′51.4″ W; 14 Mar. 2015; A.R. Gonçalves and R. Andrade leg.; RBINS • 2 ♂♂, 2 ♀♀; same collection data as for precedcing; ZFMK .

Additional material examined

PORTUGAL • 5 ♂♂, 1 ♀ (all male terminalia studied, RBINS); Gouveia, Aldeias ; 40º28′05.4″ N, 7º35′15.7″ W; 25 Apr. 2013; A.R. Gonçalves and R. Andrade leg. • 3 ♂♂, 4 ♀♀ (all male terminalia studied, RBINS); Arganil, Benfeita (Mata da Margaraça ); 40º12′59.6″ N, 7º55′12.5″ W; 22 Feb. 2014; A.R. Gonçalves leg. • 10 ♂♂, 8 ♀♀; Marvão, Santa Maria de Marvão ; 39º23′49.2″ N, 7º21′51.4″ W; 14 Mar. 2015; A.R. Gonçalves and R. Andrade leg. • 4 ♂♂, 10 ♀♀; Guarda, Gouveia, São Cosmado ; 40°28′4.49″ N, 7°35′25.18″ W; 20 Apr. 2015; A.R. Gonçalves leg. • 1 ♀ (terminalia studied, RBINS); Guarda, Seia, Alvoco da Serra ; 40°18′03.4″ N, 7°41′22.6″ W; Apr. 2015; A.R. Gonçalves leg. • 1 ♂, 2 ♀♀ (all male terminalia studied, RBINS); Guarda, Gouveia, Aldeias (Eiras) ; 40°28′26.5″ N, 7°35′49.6″ W; 20 Apr. 2015; A.R. Gonçalves leg. • 3 ♂♂, 4 ♀♀; Vila Real, Lamas de Ôlo ; 41º22′27.6″ N, 7º48′23.7″ W; 30 Apr. 2016; R. Andrade leg. • 4 ♂♂, 4 ♀♀; Mondim de Basto, Ermelo ; 41º22′44.0″ N, 7º51′14.4″ W; 30 Apr. 2016; R. Andrade leg. • 1 ♂, 3 ♀♀; Castro Laboreiro ; 42º00′09.3″ N, 8º10′09.6″ W; 29 May 2016; R. Andrade leg. • 4 ♀♀; Viseu, Póvoa Dão ; 40°33′03.9″ N, 7°57′05.6″ W; 18 Mar. 2017; J. Almeida leg. • 1 ♂, 1 ♀; Vouzela, Campia ; 40°40′53.0″ N, 8°13′18.5″ W; 21 Mar. 2017; E. Marabuto leg. • 3 ♂♂, 1 ♀; Guarda, Panóias de Cima ; 40°29′10.2″ N, 7°13′18.4″ W; 1 Apr. 2017; A.R. Gonçalves and R. Andrade leg. • 3 ♂, 2 ♀♀; Sabugal, Sabugal ; 40°20′39.9″ N, 7°04′18.6″ W; 1 Apr. 2017; A.R. Gonçalves and R. Andrade leg. • 1 ♂, 2 ♀♀; Sabugal, Quadrazais ; 40°18′30.6″ N, 6°59′08.7″ W; 1 Apr. 2017; A.R. Gonçalves and R. Andrade leg. • 1 ♂, 5 ♀♀; Guarda, Adão ; 40°27′03.0″ N, 7°09′41.8″ W; 1 Apr. 2017; A.R. Gonçalves and R. Andrade leg. • 4 ♂♂, 2 ♀♀; Fafe, Felgueiras ; 41°31′24.0″ N, 8°06′01.2″ W; 9 Apr. 2017; R. Andrade and J. Almeida leg. • 1 ♂; Fafe, Travassós ; 41°30′06.4″ N, 8°10′55.6″ W; 9 Apr. 2017; R. Andrade and J. Almeida leg. • 3 ♂♂, 7 ♀♀; Coimbra, Lousã, Catarredor ; 40°04′20.9″ N, 8°13′04.2″ W; 19 Apr. 2017; A.R. Gonçalves and D. Rodrigues leg.

SPAIN • 10 ♂♂, 21 ♀♀ (all male terminalia studied, RBINS); Ourense, Viana do Bolo ; 42º09′06.2″ N, 7º07′12.3″ W; 11 May 2014; A.R. Gonçalves and R. Andrade leg. • 3 ♀♀ (all male terminalia studied, RBINS); Ourense , O Bolo; 42º15′03.2″ N, 7º06′46.9″ W; 11 May 2014; A.R. Gonçalves and R. Andrade leg. • 8 ♂♂, 12 ♀♀; Ourense , A Gudiña; 42º04′14.6″ N, 7º07′47.5″ W; 11 May 2014; A.R. Gonçalves and R. Andrade leg. • 1 ♂; Mosteiro de Carboeiro ; 42°45′18.8″ N, 8°14′46.6″ W; 6 May 2018; A.R. Gonçalves leg. • 3 ♂♂, 2 ♀♀; Galiza, Ourense, Piñor ; 42°31′17.3″ N, 8°00′14.3″ W; 7 May 2018; A.R. Gonçalves leg.

Description

Similar to Tachydromia cantabrica sp. nov. except for the following:

Male

MEASUREMENTS. Body length: 1.9–2.4 mm (n = 5). Wing length: 0.05–0.16 mm (n = 5).

HEAD. Lateroclinate ocellars ¾ as long as postpedicel. Proclinate verticals ca ½ as long as postpedicel.

ANTENNA. Postpedicel lanceolate, ca 2 times as long as pedicel.

THORAX. Postpronotal with ca 6 setae laterally, 7 acrostichal setae; notopleuron with 1 strong, prominent, seta plus 4 small setae; scutellum with 4 setae medially, central pair long and thick, lateral thick but shorter.

WING ( Fig. 20A ). Micropterous, covered by grey microscopic setulae, no setae present.

LEGS. Coxae, femora and most of tibia dark brown to black; trochanters, knee, anteroventral surface of tibia, distal ¼ of tarsomere 1, distal half of tarsomere 2 and following tarsomeres yellowish. Sparse ciliation of hair-like setae on fore tibia slightly longer than maximum diameter of tibia.

ABDOMEN. First tergite with differentiated, strong posteromarginal setae.

TERMINALIA ( Fig. 5 ). Right surstylus covered with long setulae, without microtrichia, bearing stronger setae mostly on dorsal margin, with several (ca 10) distinct denticles, ⅔ of which aggregated on distal apex. Right cerci with broad tip, left narrowing distally, both with long setae of unequal length on apical half, enclosed in epandrial lamellae. Left epandrial lamella ⅔ as long as left cercus. Left surstylus 2 times as long as wide, longer than cerci, with short setae of equal length on apical margin.

Female

Similar to male, including being micropterous ( Fig. 20B ), except for following features: no distinctive hairs or setae on fore femur; spur on mid tibia absent; cercus pale brown with grey microtrichia and setae; no longer setae on apical sternites.

Distribution

Portugal and Spain. Mostly distributed in the northwestern Iberia (North and Central Portugal and Galicia), with just one locality south of the Tagus river (Santa Maria de Marvão).

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. 5. Terminalia of the holotype of Tachydromia ebejeri Gonçalves, Grootaert & Andrade sp. nov., holotype (RBINS). A. Right surstylus and right epandrial lamella. B. Epandrium with cerci. C. Left epandrial lamella and left surstylus. D. Right surstylus. Scale bar: 0.1 mm.

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.

Fig. 25. Habitat of Tachydromia ebejeri Gonçalves, Grootaert & Andrade sp. nov. in a forest of Quercus pyrenaica Willd. in Portugal, Arganil, Benfeita (Mata da Margaraça), a region under submediterranean influence.