Cheilosia candida Vujić et Radenković, 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 : 107-108

Cheilosia candida Vujić et Radenković sp. n.

ZooBank link: urn:lsid:zoobank.org:act:316154DF-6472-4362-9269-F484233B277B

Figs 1A, 1 C–D, 3, 4

Type material. HOLOTYPE. Greece, ♂, pinned, in NBCN. Original label: “Griekenland, Prov. Pindos gebergte, Plaats Kalliroi, 19.v.1988, leg. G. den Hollander ” (det. as Cheilosia longula by G. den Hollander, 1984).

Diagnosis. Species related to Cheilosia paralobi , but differs in the following characters: face partly microtrichose on genae, along paraface and between antennae and facial tubercle in C. candida sp. n. ( Fig. 1A ), while in C. paralobi entire face microtrichose, except facial tubercle ( Fig. 1B ); basoflagellomere of male partly reddish in C. candida sp. n. ( Fig. 1D ), while in C. paralobi almost completely black ( Fig. 1E ) (in some specimens inner side basally with paler macula); frons covered with intermixed black and yellow pile in C. candida sp. n., while in C. paralobi only with yellow pile. Male genitalia: surstylus shorter in C. candida sp. n., about three times longer than broad basally ( Fig. 4B ), while in C. paralobi very narrow apically and elongated, more than five times longer than broad basally ( Fig. 5E ).

Description. MALE. Head ( Figs 1A, 1 C–D). Antennae dark, brown-reddish; basoflagellomere dark-brown with reddish macula basoventrally, ellipsoidal, about 1.3 times as long as broad, and 3.5 longer than pedicel; arista 1.5 times longer than antennae, covered with short pile ( Fig. 1D ); face wide, 1/2 of the width of head anteriorly, covered with long, pale-yellow pile along paraface in upper 1/3 ( Fig. 1A ); facial tubercle rounded; genae, face between antennae and facial tubercle, and along paraface covered with grey microtrichia; frons convex, shiny, covered with mixed yellow and black pile; vertex convex and shiny; ocellar triangle equilateral, covered with mixed yellow and black pile; eyes bare; eye contiguity shorter than length of frons ( Fig. 1C ); occiput narrow, with white-grey microtrichia, covered with yellow pile, with additional black pile dorsally along eye margin. Thorax ( Fig. 3 ). Scutum black, with dark-golden color, laterally slightly microtrichose, covered with long yellow pile, except wing bases covered with black pile and few black ones in notopleural area; central disk shiny, with fine punctuation; scutellum covered with yellow pile ( Fig. 3A, C ); metathoracic pleuron slightly microtrichose, covered with pale-yellow pile and wavy at apical end; wing membrane brownish medially, with brown veins, completely microtrichose; vein M1 meeting vein R4+5 at acute angle; halters light to dark-brown; calypteres yellowish-gray; all legs dark-brown/black, except light-brown apex of femora, basal 1/3 and apical end of tibiae, and ventral surface of tarsi; legs grey microtrichose and with mixed yellow and black pile, although yellow ones dominate ( Fig. 3B ). Abdomen ( Fig. 3C ). Terga dull, covered with mostly yellow pile, except few black ones on pregenital segment; sterna grey microtrichose, covered with yellow pile, except few black ones on sternum 4. Male genitalia ( Fig. 4 ). Surstylus about three times longer than broad basally, with central bulge from lateral view ( Fig. 4B ); dorsal lobus of gonostylus sickle-shaped, with spine-like dorsal prolongation (marked with arrow on Fig. 4A ).

FEMALE. Unknown.

Etymology. The new species is named according to the Latin adjective ‘ candida ’ meaning bright (not dark), indicating yellow color of body pile and reddish antennae.

Distribution. Known only from Greece, from a locality on Pindos Mountains ( Fig. 6 ).

Figures

FIGURE 1. A, C, D male of Cheilosia candida sp. n. B, E male of Cheilosia paralobi. A, B head, lateral view, C head, dorsal view, D, E antennae, lateral view. Scale bar, 1 mm.

FIGURE 3. Male of Cheilosia candida sp. n. A thorax, lateral view B metafemur and metatibia, lateral view C body, dorsal view. Scale bar, A, B 0.5 mm, C 2 mm.

FIGURE 4. Male genitalia of Cheilosia candida sp. n., lateral view. A male genitalia without surstylus B surstylus. ep—epandrium, hp—hypandrium, ce—cercus, godl—dorsal lobus of gonostylus, arrow pointed dorsal prolongation on godl, govl—ventral lobus of gonostylus. Scale bar, 0.2 mm.

FIGURE 5. A–D Epandrium of male genitalia, lateral view, E Surstylus of male genitalia in Cheilosia paralobi, lateral view.A Cheilosia cumanica, B Cheilosia hypena, C Cheilosia laticornis, D Cheilosia sulcifrons. ep—epandrium, sst—surstylus. Scale bar, 0.5 mm.

FIGURE 6. Distribution map of newly described species.