Winnertzia quercinophila, Jaschhof & Jaschhof, 2020

Jaschhof, Mathias & Jaschhof, Catrin, 2020, Reevaluation of species richness in Winnertzia (Diptera, Cecidomyiidae, Winnertziinae), with descriptions of 37 new species from Sweden, Peru and Australia, Zootaxa 4829 (1), pp. 1-72 : 52-53

Winnertzia quercinophila sp. nov.

Figs 91–93

Diagnosis. A medium-sized, brown Winnertzia with distinctive male genitalic structures, as follows ( Fig. 91 ). The posterior edge of the ninth tergite is unusually deeply indented medially, the indentation being narrowly U-shaped (↓ 4); the gonostylus is conspicuously strongly convex posteriorly (↓ 5); and the aedeagal apodeme has a sclerotized, pointed broadening apically (↓ 6).

Other male characters. Body size 2.5 mm. Head. Eye bridge 3–4 ommatidia long dorsally. Antenna half as long as body. Scape larger than pedicel, both brighter than flagellum. 12 flagellomeres, translucent sensilla on flagellomeres 1–10. Fourth flagellomere: neck 0.6 times as long as node; node 1.8 times as long as broad; sensory hairs numerous; translucent sensilla filiform, both lateral and medial sensillum obliquely aligned, variously U-shaped ( Figs 92–93 ). Palpus slightly shorter than head height, 4 setae-bearing segments; fourth segment longest of all. Labella of normal size. Thorax. Pronotal setae about 15. Anepimeral setae absent. Lateral mediotergal microtrichia little enlarged. Parascutellar area bright, vaguely contoured. Wing shorter than body, 2.3 times as long as broad. Costal cell slightly reinforced. M 4 long, almost straight, CuA moderately bent, both veins extending to edge of wing. Legs with both pointed and blunt-ended scales. Basitarsal spines absent. Second to fifth tarsomeres and acropods missing. Abdomen. Pleural membrane with setae and scales. Genitalia ( Fig. 91 ). Ninth tergite three fourth gonopodal length; setae confined to lateroposterior portions; indentation with broadly pigmented margin; posterolateral lobes densely microtrichose and sparsely setose inside. Gonocoxal synsclerite broader than long; ventral emargination U-shaped, sharply contoured basally; ventroanterior edge broadly rounded, with narrow, sclerotized margin; medial bridges slightly bulging; ventro- and dorsoposterior portions ending at same level; dorsal apodemes moderately long. Gonostylus slightly bent; pectinate claw large; basolateral apophysis normal size, angulated. Aedeagal bulge with closely spaced rows of tiny spikes. Solid basal portion of aedeagal apodeme moderately long. Tegmen gently tapered towards blunt-ended apex, sharply contoured; flaps large, sharply contoured; parameral apodemes normal size.

Etymology. The name means oak-loving, with reference to the habitat at the type locality.

Type material. Holotype. Male, Sweden, Halland, Laholm, Blåalt Nature Reserve , forest predominated by oak trees, 12 June–8 July 2019, Malaise trap, M. Lindström (spn CEC 3026 in NHRS).

Distribution and phenology. Winnertzia quercinophila is known from a single specimen, of which the collection data are specified above.

Figures

FIGURES 90–93. Male morphology of Winnertzia panguana (90) and Winnertzia quercinophila (91–93), holotypes. 90: Genitalia, ventral. 91: Ditto. 92: Fourth flagellomere, lateral. 93: Ditto, medial. Scales 0.05 mm.Arrows refer to characters described in the diagnoses.