Winnertzia smalandensis, 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 : 53-54

Winnertzia smalandensis sp. nov.

Figs 94–96

Diagnosis. A small, light-brown Winnertzia , distinguished by several male genitalic characters in combination, as follows ( Fig. 96 ). The gonostylus, which is thickest on the apical half, has a long, narrow claw apically (↓ 1); the tegmen is peculiar for that the lateral edges are in parallel to each other basally (↓ 2); the ninth tergite has a fairly narrow, medially indented posterior edge, slightly angular posterior corners (↓ 3), and a pair of small, microtrichose, sparsely setose lobes inside; and the aedeagal apodeme is parallel-sided except for a slight constriction apically. Females and preimaginal stages of W. smalandensis are unknown. See W. brevipalpata and W. egregia for two superficially similar species.

Other male characters. Body size 1.3–1.4 mm. Head. Eye bridge 1–2 ommatidia long dorsally. Antenna three fourth as long as body. Scape slightly larger than pedicel, both concolorous with flagellum. 11 flagellomeres, translucent sensilla on flagellomeres 1–9. Fourth flagellomere: neck 0.8–0.9 times as long as node; node twice as long as broad; sensory hairs numerous; translucent sensilla filiform, occasionally furcate, lateral sensillum obliquely aligned, shaped like a widely open U ( Fig. 94 ), medial sensillum longitudinally aligned, variously bent ( Fig. 95 ). Palpus shorter than head height, 4 setae-bearing segments; fourth segment longest of all. Labella of normal size.

Thorax. Pronotal setae 6–8. Anepimeral setae absent. Lateral mediotergal microtrichia large. Parascutellar area bright, sharply contoured. Wing shorter than body, 2.6 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. Fore tibia and T 2 same length. Acropods: claws slightly bent, basal tooth large; empodia half as long as claws. Abdomen. Pleural membrane with setae and scales. Genitalia ( Fig. 96 ). Anterior edge of ninth tergite vague; setae confined to lateroposterior portions. Gonocoxal synsclerite broader than long; ventral emargination resembling a widely open U, with large unsclerotized area basally; ventroanterior edge straight; medial bridges slightly bulging; ventro- and dorsoposterior portions ending at same level; dorsal apodemes long and thin. Gonostylus about twice as long as broad; basolateral apophysis normal size, angulated. Aedeagal bulge with closely spaced rows of tiny spikes. Solid basal portion of aedeagal apodeme long. Tegmen with membranous, narrowly rounded apex, sharply contoured medially; flaps large, vaguely contoured; parameral apodemes long, directed ventrolaterad.

Etymology. The name is derived from Småland, the province in Sweden where all the specimens known of this species were collected.

Type material. Holotype. Male , Sweden, Småland, Alsterbro, backyard with diverse flora including woody plants, 15 July–19 August 2016, Malaise trap, M. & C. Jaschhof & S.-O. Ulefors (spn CEC 3021 in NHRS) . Paratypes. 2 males, same data as the holotype (spns CEC3022 – CEC 3023 in NHRS) ; 2 males, Småland, Nybro, Bäckebo, Grytsjön NR, swampy forest edge with young birch and willow trees, 17 June–16 July 2015, MT, MCJ (spns CEC3024 – CEC 3025 in SDEI) .

Distribution and phenology. Specimens of W. smalandensis were collected in summer in different habitats in southern Sweden.

Figures

FIGURES 94–99. Male morphology of Winnertzia smalandensis (94–96) and Winnertzia sundini (97–99), holotypes. 94: Fourth flagellomere, lateral. 95: Ditto, medial. 96: Genitalia, ventral. 97: Ditto. 98: Fourth flagellomere, lateral. 99: Ditto, medial. Scales 0.05 mm. Arrows refer to characters described in the diagnoses.