Claspettomyia parvidentata, Jaschhof, 2024

Jaschhof, Mathias, 2024, New taxa and new records of Winnertziinae and Porricondylinae (Diptera: Cecidomyiidae) from Germany, European Journal of Taxonomy 953, pp. 1-134 : 70-71

Claspettomyia parvidentata sp. nov.

urn:lsid:zoobank.org:act:1C5EE96F-A72D-4059-8174-28BB985004AD

Fig. 17

Differential diagnosis

Morphology

Claspettomyia parvidentata sp. nov. and C. toelgi are the only species of Claspettomyia in which the gonostylar tooth is not shaped like a fingernail but consists of several separate spines that form a comb. In the new species, the comb is made of about 4 spines, which hardly stand out from the gonostylar bulgeʾs dense cover with microtrichia and fine setae (↓ 1, Fig. 17A ), whereas in C. toelgi the comb is about twice that size and fairly conspicuous ( Jaschhof & Jaschhof 2013: fig. 133b). Further differences concern the parameres, which are nearly straight and point posteriad in C. parvidentata (↓ 2) versus strongly bent dorsad in C. toelgi , and the gonocoxal processes whose portions beyond the apical bend are markedly shorter in C. parvidentata (↓ 3) compared with C. toelgi ( Jaschhof & Jaschhof 2013: fig. 133b). As regards non-terminalia distinctions, the eye bridge of C. parvidentata is markedly shorter dorsally compared with that of C. toelgi (2‒3 ommatidia versus 7‒8 ommatidia) and the flagellomeral necks of C. parvidentata are shorter (1.5‒1.7 versus 2.0‒2.2 times the nodal length in the fourth flagellomere, Fig. 17B ) and lack the dark pigmentation found in C. toelgi . Larvae and females of the new species are unknown.

DNA barcode

CO1 sequences (651‒652bp) of two paratype specimens detailed below are available in BIN BOLD:AER0014. Search on BOLD’s BIN Database retrieved no further result for this BIN (accessed 27 Aug. 2023).

Etymology

The specific epithet, an adjective, means ‘small-toothed’, with reference to the inconspicuous gonostylar tooth typical of this species.

Type material

Holotype

GERMANY – Bavaria • ♂; Lower Franconia, Esselbach ; 49°86′74″ N, 9°53′81″ E; elev. 313 m; 17 Jul. 2019; LandKlif and J. Müller leg.; Malaise trap; ZSM-DIP-42305-G02 .

Paratypes

GERMANY – Bavaria • 1♂; same data as for the holotype; ZSM-DIP-42305-G01 • 1 ♂; Upper Bavaria, Rudelzhausen ; 48°57′84″ N, 11°86′26″ E; elev. 520 m; 16 Jul. 2019; LandKlif and J. Müller leg.; Malaise trap; BOLD GBDTA10074-21 ; ZSM-DIP-42305-A04 • 1 ♂; same data as for preceding; BOLD GBDTA10075-21 ; ZSM-DIP-42305-A05 • 1 ♂; Lower Franconia, Rimpar ; 49°85′93″ N, 9°95′34″ E; elev. 279 m; 12 Jul. 2019; LandKlif and J. Müller leg.; Malaise trap; ZSM-DIP-42305-C10 • 1 ♂; same data as for preceding; ZSM-DIP-42306-F10 • 1 ♂; Lower Franconia, Kolitzheim ; 49°92′17″ N, 10°23′42″ E; elev. 229 m; 16 Jul. 2019; LandKlif and J. Müller leg.; Malaise trap; ZSM-DIP-42306-B09 °

Other characters

Male

BODY LENGTH. 1.7‒2.0 mm.

HEAD. Antenna longer than body; scape and pedicel brighter than flagellum; circumfila present on flagellomeres 1‒12. Palpus 1.5 × as long as head height.

WING. About as long as body. Length / width ratio 2.8.

TERMINALIA ( Fig. 17A ). Gonocoxal synsclerite: ventral emargination U-shaped, with narrow, darkly pigmented margin anteriorly; 2 pairs of processes arising from a common base, dorsal pair less than half the size of ventral pair, both pointing ventrad; protuberances near gonostylar bases inconspicuous, pointed, with several fine setae. Gonostylus markedly bent near midlength; outside with numerous setae of various lengths; inside very sparsely setose; apical bulge large, subglobular, with 2‒3 subapical bristles.

Figures

Fig. 17. Claspettomyia parvidentata sp. nov., holotype, ♂ (ZSM-DIP-42305-G02). A. Terminalia, ventral view. B. Fourth flagellomere, lateral view. Scale lines: 0.05 mm. The numbered arrows indicate diagnostic characters (see text).