Winnertzia incrassata, 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 : 22-23

Winnertzia incrassata sp. nov.

urn:lsid:zoobank.org:act:81F2BFB9-7783-4481-B74E-938964230EE0

Fig. 5

Diagnosis

Morphology

This new species exhibits all three character states typical of the W. globifera group ( Jaschhof & Jaschhof 2020b): the gonostylar tooth is situated at some distance from the gonostylar apex, the dorsoposterior portions of the gonocoxae protrude markedly beyond the ventroposterior portions, and the tarsal claws lack a strong basal tooth. A feature unique of W. incrassata sp. nov. is that the aedeagal apodeme is clearly broadened apically ( Fig. 5A , ↓ 1), not narrowed as in the other species of this group. Larvae and females of W. incrassata are unknown.

DNA barcode

CO1sequences (652‒697bp) of the type specimens specified below are available in BIN BOLD:AER2284. A search in BOLDʼs BIN Database retrieved no further result for this BIN (accessed 25 Aug. 2023).

Etymology

The specific epithet ‘ incrassata ’, the Latin adjective for ‘thickened’, refers to the shape of the aedeagal apodeme characteristic of this species.

Type material

Holotype

GERMANY • ♂; Bavaria, Moos, Isar estuary; 48°77′90″ N, 12°94′98″ E; elev. 313 m; 12‒25 Aug. 2021; GBOL and R. Albrecht leg.; Malaise trap; Molinia caerulaea meadow; BOLD GBDTA10615-21 ; ZSM-DIP-42310-F10 .

Paratypes

GERMANY • 1 ♂; Bavaria, Munich, Allacher Lohe Nature Reserve ; 48°20′06″ N, 11°48′35″ E; elev. 499 m; 4‒19 Aug. 2021; GBOL and R. Albrecht leg.; Malaise trap; heathland; BOLD GBDTA10617-21 ; ZSM-DIP-42310-F12 • 1 ♂; same data as for preceding but 21 Jul.‒4Aug.2021; BOLD GBDTA10618-21 ; ZSM-DIP-42310-G01 • 1 ♂; same data as for preceding; BOLD GBDTA10619-21 ; ZSM-DIP-42310-G02 .

Other characters

Male

BODY LENGTH. 2.0‒ 2.3 mm.

HEAD. Eye bridge dorsally 2‒3 ommatidia long. Antenna markedly shorter than body; scape larger than pedicel, both slightly darker than flagellum; 11 flagellomeres, translucent sensilla on flagellomeres 1‒10. Fourth flagellomere with neck 1.2× length of node, node 1.8× as long as broad; sensory hairs numerous, translucent sensilla multiform, from straight to U- or Y-shaped ( Fig. 5B ). Palpus shorter than head height, 3 or 4 setae-bearing segments depending on whether fourth segment is separate or merged with third, if merged then apical segment by far the longest of all. Labella conspicuously small.

THORAX. Pronotal setae 7‒10. Anepimeral setae absent. Mediotergal lateral microtrichia markedly enlarged. Parascutellar area bright, vaguely contoured.

WING. Markedly longer than body. Length/ width ratio 2.7. Costal cell slightly reinforced. Costal break indistinct. M 4 very faint, CuA strongly bent apically, both veins declining before wing margin.

LEGS. With pointed scales. Basitarsal spines absent. Fore tibia 1.3× length of T 2. Acropods: claws slightly bent, empodia vestigial.

ABDOMEN. Slender. Pleural membrane devoid of vestiture.

TERMINALIA ( Fig. 5A ). Ninth tergite ¾ of gonopodal length, setae confined to posterior half; posterior margin straight, with pigmented area medially; anterior margin straight, indistinct. Gonocoxal synsclerite as long as broad; a large portion ventroanteriorly glabrous; ventral emargination U-shaped, sharply contoured, surrounded by diffuse, darkly pigmented area of variable extent (not illustrated); ventroanterior margin membranous, broadly rounded; dorsoposterior portions subtriangular; dorsal apodemes thick, moderately long. Gonostylus 2.5× as long as broad, strongly narrowed subbasally; basolateral apophysis small, slightly angulated; subapical tooth pectinate, of moderate size, obliquely aligned. Tegmen sharply contoured, rounded apically; flaps with distinct, reinforced margins; parameral apodemes of normal size. Solid basal portion of aedeagal apodeme moderately long, transition to distal portion smooth. Aedeagal bulge with closely spaced rows of tiny spikes.

Figures

Fig. 5. Winnertzia incrassata sp. nov., holotype, ♂ (ZSM-DIP-42310-F10). A. Terminalia, ventral view. B. Fourth flagellomere, lateral view. Scale lines: 0.05 mm. The numbered arrow indicates a diagnostic character (see text).