Psilota aegeae Vujić, Ståhls et Smit,

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: 114-119

publication ID

https://doi.org/10.11646/zootaxa.4830.1.4

publication LSID

lsid:zoobank.org:pub:1A443ECB-537E-4060-992D-A83CA4587EA0

DOI

http://doi.org/10.5281/zenodo.4452596

persistent identifier

http://treatment.plazi.org/id/0D73CC2C-6624-D465-FF65-9D5DFF64C3D5

treatment provided by

Plazi

scientific name

Psilota aegeae Vujić, Ståhls et Smit
status

sp. n.

Psilota aegeae Vujić, Ståhls et Smit  sp. n.

ZooBank link: urn:lsid:zoobank.org:act:C15AA253-D7AB-4BE7-BAAE-F7617409E9B6

Figs 9View FIGURE 9, 10View FIGURE 10, 11A, CView FIGURE 11

Type material. HOLOTYPE: Greece, ♂, pinned, in FSUNS. Original label: “Agiassos, 21.iv.2007, Sanatorio Site, leg. Pérez-Bañón C. & Vujić A.”  . PARATYPES: Greece: 1♂  + 1♀, same locality as holotype, Lesvos , Agiassos, Sanatorio Site, 39°06’00.26”N 26°21’25.45”E, 21.iv.2007, leg. C. Pérez-Bañón, A. Vujić ( FSUNS)GoogleMaps  ; 1♂ + 2♀, Lesvos , Agiassos, 39°06’00.26”N 26°21’25.45”E, 13.iv.2013, leg. A. Vujić ( FSUNS)GoogleMaps  ; 1♂, Lesvos, Agiassos, 39°06’00.26”N 26°21’25.45”E, 8.v.2007, leg. G. Ståhls ( MZH; collection code http://id.luomus.fi/GJ.2051GoogleMaps  ♀, Lesvos, Agiassos, 39°06’00.26”N 26°21’25.45”E, 9.v.2007, leg. G. Ståhls ( MZH; DNA voucher, collection code http://id.luomus. fi/GJ.2501 and http://id.luomus.fi/GJ.2052GoogleMaps  1♂, Lesvos, Megali Limni, 28.iv.2008, 39°05’49”N 26°19’55”E, leg. G. Ståhls ( MZH; http://id.luomus.fi/GJ.2053GoogleMaps  1♂, Lesvos, Megali Limni, 39°05’49”N 26°19’55”E, 9.v.2009, leg. G. Ståhls ( MZH; http://id.luomus.fi/GJ.2054GoogleMaps  1♂, Lesvos, Megali Limni, 39°05’49”N 26°19’55”E, 9.v.2009, leg. G. Ståhls ( MZH; http://id.luomus.fi/GJ.2055GoogleMaps  1♂, Lesvos, Megali Limni, 1.v.2008, 39°05’49”N 26°19’55”E, leg. G. Ståhls ( MZH; DNA voucher http://id.luomus.fi/GJ.2655 1♂, Lesvos, 30.iv.2008, leg. S. Radenković ( FSUNS).GoogleMaps 

Diagnosis. Psilota aegeae  sp. n. belongs to the P. atra  species group, with metafemur in male not swollen ( Fig. 9EView FIGURE 9) and epandrium in male genitalia longer than broad, outer surstyle lobe shorter than inner surstyle lobe ( Fig. 11View FIGURE 11 A–B). Antenna in female implanted in the upper half of the face ( Fig. 10AView FIGURE 10), basoflagellomere about 2 times longer than broad, with clearly brown elongated macula basoventrally ( Fig. 10AView FIGURE 10); abdomen covered with predominantly whitish pile, while the scutellum covered with whitish pile intermixed with the black ones ( Fig. 10View FIGURE 10 C–D).

Based on male genitalia characters, Psilota aegeae  sp. n. is the most similar to Psilota atra  , but differs as follows: in P. aegeae  sp. n. epandrium 1.2 times longer than broad, while in P. atra  almost 2 times ( Fig. 11View FIGURE 11 A–B), furthermore there are differences in morphological characters of other body parts as well: basoflagellomere in P. aegeae  sp. n. longer (about 2 times longer than broad) than in P. atra  (1.5 times); cell R on wing in P. aegeae  sp. n. is hyaline compared to P. atra  where this cell is distinctly yellow; in P. aegeae  sp. n. pile on tergum 2 mostly pale-yellow, and much longer on lateral margins of all terga with regard to P. atra  (pile on all terga mostly black and much shorter on lateral margin); tergum 2 with less developed transverse grooves in P. aegeae  sp. n. which are distinctively developed in P. atra  .

The female of P. aegeae  sp. n. can be separated from all other Psilota  species by the combination of the following characters: antennae implanted in the upper half of the face; anepisternum covered with white pile and metafemur not swollen. From the related P. atra  , it differs by the color of the pilosity: pale-yellow on frons in P. aegeae  sp. n. (in some specimens the pile on frons are pale-yellow in anterior part and black in posterior part), while black in P. atra  ; mostly pale-yellow on scutum in P. aegeae  sp. n., while black in P. atra  ; white on metathoracic pleuron in P. aegeae  sp. n., while mixed black and pale-yellow in P. atra  .

Molecular data: The clustering of the mtDNA COI barcode sequences of the included Psilota  species and specimens is shown in Fig. 12View FIGURE 12. The uncorrected sequence divergences between Psilota aegeae  sp. n. and included Psilota  spp. ranged between 3.3–4.4%.

Description. MALE. Head ( Fig. 9View FIGURE 9 A–B). Antennae elongated, basoflagellomere about 2 times longer than broad, rounded at the tip, mostly dark-brown, except small light-brown basoventral inner area; face and frons black, mostly shiny, with scarce, indistinct dark-brown/gray microtrichia, covered with black pile, as well as vertex; face with a bare vitta, from the base of antenna to upper margin of mouth; genae and ventral part of mouth edge without pile; eyes densely covered with long yellowish pile; eye contiguity about as 2 times longer than ocellar triangle; ocellar triangle isosceles, covered with very long black pile; occiput very narrow, covered with short black pile. Thorax ( Fig. 9C, EView FIGURE 9). Entirely black, with fine punctuation, covered with black pile somewhat wavy at the top; pile on scutum and scutellum clearly of two different lengths ( Fig. 9CView FIGURE 9); scutellum with a row of long pile-like bristles at the posterior margin; subscutellar fringe composed of short black pile; metathoracic pleuron mostly shiny, predominantly covered with black pile (except whitish ones at grey microtrichose anterior end of anterior anepisternum), the longer pile somewhat wavy at the top; wings hyaline, veins clearly yellow at the base; pterostigma yellow; wing covered with microtrichia, except basal half of the cell R almost bare; calypteres yellowish, with some brown pile at the posterodistal margin of fringe, the rest yellow; halteres yellow-brown; legs entirely black, except apex of femora and base of the tibiae slightly lighter; all legs covered with mixed pale and black pile; metafemur thin, about 4.7 times longer than wide; the apical half of the metafemur ventrally with a shallow groove, formed by two rows of mixed short and long black spines ( Fig. 9EView FIGURE 9); the ventral surface of the tarsi with the short yellow pile. Abdomen ( Fig. 9DView FIGURE 9). Entirely black, predominantly shining; tergum 2 mostly covered with yellowish pile, only the posterior half with some black pile; terga 3 and 4 usually almost entirely covered with black pile, except some yellowish pile on lateral margins of both terga and anterior end of tergum 4 (area with yellowish pile on tergum 4 can be larger); all pile on the abdomen erect; sterna black, shiny, covered with long and erect whitish pile wavy at the top. Male genitalia ( Fig. 11A, CView FIGURE 11). Epandrium compactly built, rectangular, longer than broad; inner surstyle lobe elongated, broad apically; outer surstyle lobe narrow and curved, shorter than inner surstyle lobe; cercus very elongated, rectangular ( Fig. 11AView FIGURE 11); height of narrowest part of epandrium in dorsal view small ( Fig. 11CView FIGURE 11). Superior lobe fused with hypandrium, narrow with tapering tip; aedeagus with a serrate ventral margin and pointed apex ( Fig. 11AView FIGURE 11).

FEMALE ( Fig. 10View FIGURE 10). Similar to the male except for the following characters: face, frons and larger part of occiput covered with pale-yellow/whitish pile ( Fig. 10View FIGURE 10 A–B); basoflagellomere with a clear elongated brown to reddish macula basoventrally, developed on both sides of basoflagellomere, inner and outer ( Fig. 10AView FIGURE 10); pile on the eyes much shorter than in males; pile on scutum all pale-yellow, except at the wing basis, postalar callus and on posterior margin of scutellum mixed white and black pile ( Fig. 10CView FIGURE 10); the metathoracic pleuron entirely covered with pale-yellow pile; legs and abdomen predominantly covered with whitish pile ( Fig. 10D, EView FIGURE 10).

Etymology. The specific epithet is the genitive case of the Greek name Aegea (to which the Aegean Sea owes its name) and refers to its origin, an island in the Aegean Sea.

Distribution. Only known from Lesvos Island ( Greece) ( Fig. 6View FIGURE 6). Probably local endemic.

Biology. Adults were collected in open areas within Mediterranean pine forest Pinus brutia Tenore  (255–355m above sea level). They were visiting flowers of Smirnium perfoliatum L. Flight period is from April to beginning of May.

FSUNS

Faculty of Science, The University of Novi Sad

MZH

Finnish Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Psilota