Jezekiella patera, Wagner & Kvifte, 2015

Wagner, Rüdiger & Kvifte, Gunnar Mikalsen, 2015, Description of Jezekiella patera gen. et sp. nov. from Europe (Diptera: Psychodidae), Acta Entomologica Musei Nationalis Pragae 55 (2), pp. 505-511 : 507-509

Jezekiella patera sp. nov.

( Figs 1–10 )

Type material. HOLOTYPE: J, ITALY: LIGURIA: Torrente Erro, near Hautenotte , 12 May 1980, leg P. Zwick (hand net). The specimen will be deposited in the Museum für Naturkunde der Humboldt Universität zu Berlin.

Diagnosis. As for the genus.

Description. Head. Eyes reniform, eye bridge comprised of 4 facet rows, distance between eyes almost 3 facet diameters ( Fig. 1 ). Interocular suture obtusely V-shaped. Frons and clypeus separate. Frontal setae alveoli patch undivided at middle, reaching between the eyes. About three postocular bristles on the dorsolateral side. Palpus with four segments, terminal palp segment slightly sclerotized, annulate, length 0.73 mm. Length of palp segments: 0.136- 0.186-0.200- 0.221 mm. Relative length proportions: 19-26-28-31. Antenna with scape about two times longer than its greatest width in the distal part; scape/pedicel short, globular with a row of about 8 flat androconia along the inner distal margin ( Fig. 2 ). Flagellomeres nodiform, symmetrical, with internodes about 1/3 of a segment length; basal two flagellomeres with spiniform sensilla on medial surface. Every flagellomere with a pair of digitate ascoids about as long as a flagellomere ( Fig. 3 ). Absolute length of antennomeres present: 0.160-0.069-0.115- 0.099-0.099-0.099-0.099-0.099-0.096-0.088-0.093-0.091- 0.088 mm. Relative proportions of antennomeres: 24-12-17-16-15-15-15-15-15-14-13-13-13, distal articles of antennae lost.

Thorax. Prothorax with a pair of stalked allurement organs about twice as long as wide, sclerotized, half as long as head and with small holes unevenly distributed over their surface ( Fig. 5 ). Metathoracic spiracle with setose operculum ( Fig. 6 ). Legs without special features. Wing opaque, darker in the costal cell between costa and R 1, and with a lighter spot near base of R 1 ( Fig. 4 ). Sc comparatively long, approaching but not reaching R 1; crossveins r 4 -r 5, R-M r-m, m 1+2 -m 3, and m-cu faint, close to wing base, most of them almost in line at the level of the tip of Sc; thus cells bm and br very short. Radial fork in the basal half of wing and slightly basal of medial fork, medial fork between tips of CuA 1 and CuA 2 in costa. Wing tip between R

4

and R

5

. Wing length 2.95 mm.

Abdomen with eight pre-genital segments. Terminalia with epandrium more than twice as wide as long with a pair of circular openings. Hypoproct elongate oval, about half as long as surstylus, slightly sclerotized, sparsely setose ( Fig. 9 ). Epiproct shorter, Y-shaped, basally curved with a clear distal tip, densely setose ( Fig. 10 ). Surstyli twice as long as epandrium, almost straight in dorso-ventral view, about 4 times longer than the greatest width, distally with about 15 to 17 dimorphic tenacula. 10 to 11 shorter digitate and pointed tenacula on the distal and lateral surfaces of the surstyli, 5 to 6 stronger, longer and distally fringed ones are at some distance from the tip ( Fig. 9 ). Some short lateral retinacula appear increasingly similar to setae on the surstyli. Hypandrium narrow, of equal width, median ventral part bent upward in specimen. Connection to basilateral prolongations of epandrium little sclerotized, almost unrecognizable. Gonocoxites short and strong, parallelogram-shaped. Gonostyli bent outward, distal inner margin irregularly serrate. Aedeagus with a horizontal, short, bottle- -shaped basiphallus sclerite, with a distal pair of straight sclerites that form an open tube, enveloped by a thin translucent hull ( Fig. 7 ). Parameres between the aedeagus and epandrium bowl-shaped, of complex structure ( Fig. 8 ) consisting of a dorsal plate from which basally thin digitate processes span to the middle but do not meet. The distal processes are bifurcate with a blunt inner and a sharp lateral tip; they are folded back towards the tips of the lateral processes which they as well do not meet. Mediodistally where the parameres are fused, lies a small setose protuberance.

Etymology. From latin patera , flat bowl, referring to the general shape of the parameres. The name is to be treated as a noun in apposition.

Distribution. The new species was collected in the SW Alps, along the Torrente Erro, a large river that flows through the Ligurian provinces Savona and Allessandri into the Mediterranean Sea.

Figures

Figs 1–10. Jezekiella patera gen. et sp. nov.1 – head with eye bridge and basal antennomeres; 2 – scape, pedicel and flagellomeres 1 and 2; 3 – flagellomere 6 with ascoids; 4 – wing; 5 – fore part of thorax with allurement organ; 6 – metathoracal spiracle; 7 – genitalia, hypandrium, gonocoxite, gonostyle, aedeagus, parameral complex indicated; 8 – parameral complex; 9 – epandrium, proctiger and surstyli with tenacula; 10 – epiproct with bases of sustyli