Winnertzia inornata, 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 : 62-63

Winnertzia inornata sp. nov.

Figs 109–111

Diagnosis. A medium-sized to large, brown Winnertzia with short antennae. Male genitalic characters are diagnostic of this species, as follows ( Fig. 109 ). The gonostylus, which is straight, twice as long as broad and slightly convex medially, has a small claw (↓ 5). The subtriangular, completely membranous tegmen has no apparent flaps (↓ 6); the parameral apodemes are fairly broad and short. The vestiture of the aedeagal bulge consists of small knobs mediobasally and tiny spikes in lines laterally. Of the gonocoxal synsclerite, the ventral emargination is broadly U- to V-shaped and the dorsal apodemes are long and slender. The ninth tergite is slightly shorter than the gonocoxae; its posterior edge has a shallow indentation flanked by small, microtrichose lobes; and the anterior edge is unevenly emarginated medially. Females and preimaginal stages of W. lapponica are unknown. Winnertzia inornata differs from W. regia , a species with generally similar genitalia, in the absence of anepimeral setae.

Other male characters. Body size 2.2–3.0 mm. Head. Eye bridge 3–4 ommatidia long dorsally. Antenna half as long as body. Scape slightly larger than pedicel, both concolorous with flagellum. 12 flagellomeres, flagellomeres 1–11 with translucent sensilla. Fourth flagellomere: neck 0.7–0.8 times as long as node; node 1.6 times as long as broad; sensory hairs numerous; both lateral and medial translucent sensilla slightly broadened, obliquely aligned, highly variable in shape ( Figs 110–111 ). Palpus slightly shorter than head height, 4 setae-bearing segments; apical segment longest of all. Labella fully developed. Thorax. Pronotal setae 15–25. Anepimeral setae absent. Lateral mediotergal microtrichia large. Parascutellar area bright, sharply contoured. Wing almost as long as body, 2.3 times as long as broad. Costal cell reinforced. Both M 4 and CuA gently bent, extending to edge of wing. Legs with pointed scales. Basitarsal spines absent. Fore tibia slightly shorter to slightly longer than T 2. Acropods: claws slightly bent, basal tooth large; empodia one third as long as claws. Abdomen. Pleural membrane setose. Genitalia ( Fig. 109 ). Setae on ninth tergite confined to posterior half. Gonocoxal synsclerite slightly broader than long, little narrowed towards base; ventral emargination with small unsclerotized area basally; ventroanterior edge membranous; ventroposterior portions protruding slightly beyond dorsoposterior portions; lateral edges slightly concave. Basolateral apophysis of gonostylus normal size, angulated. Aedeagal apodeme fairly thick; apex without recurved processes, occasionally slightly bifurcated; solid basal portion long.

Etymology. The Latin adjective inornata means unadorned, an allusion to the inconspicuous male morphology of this species.

Type material. Holotype. Male, Sweden, Halland, Kungsbacka, Särö , Västerskog , forest mixed of oak and pine trees, 25 July–9 August 2004, Malaise trap, Swedish Malaise Trap Project (trap 33, collection event 1081) (spn CEC 3100 in NHRS) . Paratypes. 1 male, Sweden, Öland, Mörbylånga, Gamla Skogsby (Kalkstad), mixed broadleaf forest with plenty of dead ash, 3 June–4 July 2016, MT, MCJ & E. Gustavsson (spn CEC 3101 in NHRS); 2 males, Öland, Mörbylånga, Vickleby ädellövskog NR, mixed broadleaf forest, 17 June–14 July 2015, MT, MCJ (spns CEC3102 – CEC 3103 in SDEI) .

Other material studied. Sweden: 1 male, Värmland, Munkfors, Ransäter, Ransbergs herrgård, mixed broadleaf forest, 18–27 June 2005, MT, SMTP (trap 1003, collection event 1386) (spn GULI000020964 in NHRS) ; 1 male, Södermanland, Tyresö, Åva, Spirudden, coastal oak forest, 6–27 July 2005, MT, SMTP (trap 1, collection event 1572) (spn CEC 3105 in NHRS) ; 1 male, Uppland , Håbo, Biskops-Arnö, elm grove, 28 June–13 July 2004, MT, SMTP (trap 8, collection event 1558) (spn CEC 3106 in SDEI) ; 1 male, Uppland , Uppsala, Ekdalen NR, young broadleaf forest with old oak trees, 27 June–17 July 2005, MT, SMTP (trap 27, collection event 1030) (spn CEC 3107 in SDEI) .

Distribution and phenology. Adults of this species were collected in June–August in different broadleaf forests in the southern half of Sweden (Halland to Uppland).

Figures

FIGURES 106–111. Male morphology of Winnertzia bicolor (106–108) and Winnertzia inornata (109–111), holotypes. 106: Fourth flagellomere, lateral. 107: Ditto, medial. 108: Genitalia, ventral. 109: Ditto. 110: Fourth flagellomere, lateral. 111: Ditto, medial. Scales 0.05 mm. Arrows refer to characters described in the diagnoses.