Paragus thracusi Radenković, Likov et Vujić, 2020

Radenković, Snežana, Likov, Laura, Ståhls, Gunilla, Rojo, Santos, Pérez-Bañón, Celeste, Smit, John, Petanidou, Theodora, Steenis, Wouter Van & Vujić, Ante, 2020, Three new hoverfly species from Greece (Diptera: Syrphidae), Zootaxa 4830 (1), pp. 103-124 : 111-114

Paragus thracusi Radenković, Likov et Vujić sp. n.

ZooBank link: urn:lsid:zoobank.org:act:2DCF31FB-8425-41D2-8725-22FF35B4EE4A

Figs 7 , 8

Type material. HOLOTYPE: Greece, ♂, pinned, in NBCN. Original label: “Hellas, Thraki, Rodopi, Porto Lagos SE, 1.v.2000, leg. W. van Steenis, E. S. Bakker ”.

Diagnosis. Paragus thracusi sp. n. is by habitus most similar to P. oltenicus Stćnescu , but easily distinguishable by the following characters: mesonotum of P. thracusi sp. n. covered with longer erect whitish-yellow pile in contrast to short yellow adpressed pile in P. oltenicus ; microtrichose maculae at the end of transverse suture present in P. thracusi sp. n., but lack in P. oltenicus ; punctuation of mesonotum scarce in P. thracusi sp. n., but dense in P. oltenicus ; femora dark-brown/black basally in P. thracusi sp. n., while orange-yellow in P. oltenicus ; tergum 1 black in P. thracusi sp. n., and medially reddish in P.oltenicus ; microtrichose fasciae on terga 2–4 distinct in P. thracusi sp. n., but absent or scarce in P. oltenicus ; microtrichia on terga completely whitish-yellow, while in P. oltenicus partly black; black transversal maculae on terga 2–4 lack in P. thracusi sp. n., but usually present in P. oltenicus . Based on the male genitalia P. thracusi sp. n. is immediately recognizable by the characters of hypandrium: pointed, hood shaped paramere and cliff shaped lingula.

Description. MALE. Head ( Figs 7 A–B). Face cream-yellow, with a faint brown macula on facial tubercle; ventral margin of face dark-brown/black, except the light-yellow frontal part; face and frons covered with only whitish pile; antennae long, basoflagellomere elongated and pointed, about 1.5 times as long as scape and pedicel together; arista 0.7 times the length of basoflagellomere; antennae predominantly brown, except orange basal 2/3 of basoflagellomere ventrally and pedicel ventrally; arista light-brown basally and dark-brown apically; eye contiguity 0.75 times the length of ocellar triangle; eyes with two clearly visible vittae of white pile, typical of the nominal subgenus; vertical triangle covered with grayish microtrichia in front of frontal ocellus, covered with light-yellow pile; occiput whitish microtrichose and with light-yellow pile, and with silver pile in lower parts, turning yellowish in upper parts. Thorax. Scutum black with paler anterior and posterior end of postalar callus, shiny, except two longitudinal submedian whitish microtrichose vittae ending at the level of transverse suture, and with two whitish microtrichose maculae at the end of transverse suture; mesonotum with scarce punctuation, and covered with longer erect whitish-yellow pile; metathoracic pleuron whitish microtrichose and pilose, except for the anteroventral part of posterior anepisternum and anepimeron, which are shining black; scutellum black in anterior half, orange-yellow in posterior half, without conspicuous teeth on posterior margin; wings hyaline, covered with microtrichia, except for basal cells, which are nearly entirely bare; halters light-brown, with a yellow knob; legs two colored, covered with whitish-yellow pile; femora dark-brown, black at base (pro- and mesofemora in basal 1/3, and metafemur in basal 2/3, except for tiny area near to the base yellow), and light-yellow apically; tibiae light-yellow in basal half, and dark-yellow in apical half, metatibia with brown submedian ring; tarsi orange-yellow (borders between tarsomeres black), basotarsomere of metatarsus little darker dorsally; claws yellow in basal half and black in the apical half. Abdomen ( Fig. 7C ). Abdomen predominantly red-brown, covered with whitish-yellow pile and with three pairs of whitish-yellow microtrichose fasciae on terga 2–4; tergum 1 brown-black, more or less fused with tergum 2 that is dark-brown anteriorly to the microtrichose fasciae and laterally, while red-brown posteriorly; terga 3 and 4 predominantly red-brown, except dark-brown longitudinal areas near the lateral margins and on medial parts; tergum 5 red-brown; sterna translucent orange-brown (sternum 1 darker), covered with erect whitish pile; pregenital segment white microtrichose and pilose. Male genitalia ( Fig. 8 ). Hypandrium in lateral view wide ( Fig. 8A ) with clearly developed lingula cliff shaped ( Fig. 8A : l); lateral lobe of aedeagus (= inferior claspers) well developed, almost quadrilateral in lateral view ( Fig. 8A : la); paramere (= superior claspers) pointed, hood shaped ( Fig. 8 A–B: p); ejaculatory apodeme pendulum like ( Fig. 8C ); epandrium in lateral view narrow, with narrow, not prominent cercus ( Fig. 8E ); surstylus (= styles) a little shorter than theca of epandrium ( Fig. 8E : sst), curved and tapering in dorsal view ( Fig. 8D : sst).

FEMALE. Unknown.

Etymology. The species is named after the type locality, in the North-Eastern part of Greece that belongs to the Thrace (Greek word: Θράκη), geographical and historical area in southeast Europe.

Distribution. Only known from Rhodope Mountains in Greece ( Fig. 6 ).

Figures

FIGURE 6. Distribution map of newly described species.

FIGURE 7. Male of Paragus thracusi sp. n. A head, lateral view, B head, frontal view, C abdomen, dorsal view. Scale bar, 1 mm.

FIGURE 8. Male genitalia of Paragus thracusi sp. n. A hypandrium, lateral view, B hypandrium, ventral view, C ejaculatory apodeme, lateral view, D epandrium, dorsal view, E epandrium, lateral view. aa—aedeagal apodeme, ae—aedeagus, ce—cercus, l—lingula, la—lateral lobe of aedeagus, m—minis, p—postgonit, sst—surstylus. Scale bar 0.5 mm.