Planetella hlisnikovskyi Sevcik & Hippa 2023, sp. nov.
Creators: name: Ševčík, Jan
name: Hippa, Heikki
name: Burdíková, Nikola
name: Sopuch, Kryštof
name: Skuhravá, Marcela
name: Bruun, Hans Henrik
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Planetella
Planetella hlisnikovskyi

description: Planetella hlisnikovskyi Ševčík & Hippa sp. nov.   
(Figs 10C,D, 14E)  
 Type material. HOLOTYPE: J, Czech Republic, Němčičky, 31.v.2021, sweeping over Carex montana in a thermophilous oak forest, J. Ševčík leg., specimen after DNA extraction, prepared on slide, No. PLA34 (NMPC).   
 DNA sequences. DNA sequences (COI barcode region, 28S, 16S) taken from the holotype (No. PLA 34) are deposited in GenBank. Their Accession numbers are provided in Table 1.   
 Diagnosis. A large, dark, blackish brown species. Antenna with 12 binodose flagellomeres. Eyes widely separated. Terminalia with a broad, pear-shaped hypoproct.   
 Etymology. This species is named after David Hlisnikovský, a Czech botanist who identified the host species.   
  Description. Male.  Wing length 6.0 mm. Overall body coloration mostly glossy dark brown, with legs and halters brownish.   
 Head. Eyes broadly separated, without eye-bridge. Antennal flagellum with 12 binodal tricircumfilial flagellomeres, and apically with a short uninodal flagellomere lacking circumfila. Flagellomere 1 (Fig. 14E) about 3.6 times as long as broad, slightly longer but of similar shape as the other flagellomeres, flagellomere 4 (Fig. 14E) about 3.5 times as long as broad. Maxillary palpus with 3 palpomeres, with the apical palpomere about twice as long as the previous one.   
 Thorax uniformly blackish brown. Scutum distinctly produced above the head.   
 Wing elongated, about 3.2 times as long as broad. Veins C, R 1, R 5 and Cu-stem dark and distinct. R 1 joining C almost in the middle of wing. R 5 reaching C beyond wing apex. Rs missing. M 4 light and indistinct. CuA with dark stem and bent downwards.   
 Legs with tarsal claws almost twice as long as maximum tarsal diameter, gradually bent.   
 Abdomen dark brown, with a light oval spot on each side of the tergite.   
 Terminalia (Figs 10C,D). Gonocoxite relatively narrow, about three times as long as broad, mediobasally with a small lobe. Gonostylus narrow, slightly curved, evenly broad throughout, three times as long as broad, shorter than gonocoxite, apically with a rounded, transversely grooved dark lobe. Cerci short, rounded, basally fused. Hypoproct broad, pear-shaped, distinctly longer than cerci. Aedeagus narrow, elongate, subtriangular, longer than hypoproct.   
 Female. Unknown.   
 Biology. This species is most probably associated with Carex montana, on which the holotype was collected. The galls remain unknown.   
 Discussion. This is a remarkable species, characterized by the dark coloration, 12 flagellomeres, eyes broadly separated and details on male terminalia. The other dark Planetella species have more flagellomeres and different male terminalia. Its closest relatives in terms of K2P genetic distance (Tab. 3) are P. muranica sp. nov., with 8.5% distance, and P. adami sp. nov., with 8.7% distance, both with the eye bridge present, altogether (with other two species) forming a well-supported clade (Fig. 15).
description: Published as part of Ševčík, Jan, Hippa, Heikki, Burdíková, Nikola, Sopuch, Kryštof, Skuhravá, Marcela & Bruun, Hans Henrik, 2023, Integrative taxonomy of Central European Planetella (Diptera: Cecidomyiidae) indicates high species diversity, intraspecific variation and low host specificity, pp. 413-450 in Acta Entomologica Musei Nationalis Pragae 63 (2) on page 434, DOI: 10.37520/aemnp.2023.026, http://zenodo.org/record/10621390