Tricimba chalupi Kubik

Kubik, Stepan, Bartak, Miroslav & Civelek, Hasan, 2016, Three new species of Tricimba Lioy from the West Palaearctic region (Diptera, Chloropidae), ZooKeys 558, pp. 95-107 : 99-102

Taxon classification Animalia Diptera Chloropidae

Tricimba chalupi Kubik sp. n. Figs 4, 5

Holotype male.

Czech Republic, Moravia, Podyjí NP, Terasy mixed wood, 460 m, MT [= Malaise trap], 48°53'22"N, 15°50'18"E, 2.vii.-9.viii.2003, leg Š. Kubík and M. Barták. Holotype is in good condition but mid leg missing on left side.

Paratypes.

2 males, same data as holotype.

Distribution.

Czech Republic

Date of occurrence.

July–August.

Diagnosis.

Tricimba chalupi Kubík, sp. n. belongs to the group of thirteen Palaearctic very similar former Nartshukiella species which are difficult to separate. The main characters distinguishing this species are as follows: dark species with all setae and setulae black and with large bevelled cerci (Fig. 4).

Description.

Male. Head wider than long. Frons as wide as long, posterior half dark brown to black, dusted, anterior half brownish yellow, slightly concave, lateral margins parallel. All setae and setulae dark. Frons with irregular dark setulae, pale setulae occur only in front part of frons. Ocellar tubercle scarcely raised above level of remainder of frons. Ocellar triangle large, occupying more than half of posterior margin of frons, lateral margins slightly convex, main part extending more than halfway between anterior ocellus and anterior margin of frons, dusted with light grey microtoment, with one row of dark setulae along lateral margin. Ocellar setae as long as the distance between ocelli, upright and convergent, postocellar setae longer than ocellar setae, convergent. Outer vertical setae as long as postocellar setae, inner vertical smaller, as long as ocellar setae, 9-10 dark orbital setae, posterior five of them longer and stronger then the anterior ones. Antennae yellow, first flagellomere rounded. Arista thin, brown with pubescence of equal length as its basal diameter. Face yellow, vibrissal angle slightly projecting before anterior margin of eye. Eyes with scattered short ommatrichia, deeper than long, long axis vertical. Gena slightly broader than fore tibia in middle, yellow, dusted, with one row of pale long setulae. Postgena dark brown, dusted, slightly narrower than gena. Occiput dark and dusted. Proboscis and palpus yellow with pale setulae.

Scutum slightly longer than broad, black and dusted with gray microtrichosity, with three grooves of punctuations along acrostichal and dorsocentral lines, lateral groove not developed, 1+2 notopleural setae. Anepisternum black and dusted with gray microtrichosity, anepimeron similarly dusted as anepisternum, but posteroventrally with small shiny spot, katepisternum dark brown with dorsal half shiny and ventral gray dusted. Scutellum as long as broad, flat, rounded, black and dusted with gray microtrichosity, brownish yellow only on apical third. Three pairs of black marginal setae. Apical setae as long as half of scutellum and convergent, lateral short, one third as long than apical. Subscutellum developed, black, dusted dorsally, shining ventrally.

Legs yellow, f1-f3 with narrow brown band in middle. Wings hyaline with dark brown veins. Second costal section longer than third. Halter whitish yellow.

Epandrium as in Fig. 4.

Length: 2-2.5 mm

Female. Unknown.

Etymology.

Named in honour of our friend Tomáš Chalupa who popularized the National Park Podyjí.

Remarks.

This species may be identified with difficulties in the key by Dely-Draskovits (1983) because significant differences are only present in male genitalia. We propose to modify couplet 31 of the key as follows: