Winnertzia haushoferorum, 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 : 19-21

Winnertzia haushoferorum sp. nov.

urn:lsid:zoobank.org:act:97FAF377-52C5-4197-8C74-22C35ABBEB3C

Fig. 4

Diagnosis

Morphology

According to male terminalia characters, this medium-sized, brown Winnertzia is a representative of the W. solidaginis group and closely related to W. quercinophila Jaschhof & Jaschhof, 2020 ( Jaschhof & Jaschhof 2020b: fig. 91), a species treated below. Terminalia structures characteristic of W. haushoferorum sp. nov. are as follows ( Fig. 4A ). The posterior margin of the ninth tergite is deeply indented medially (↓ 1), an unusual condition in Winnertzia , although shared with W. quercinophila . The gonostylus, which is strongly convex posteriorly, ends in a small nose-shaped bulge that bears a small pectinate tooth (↓ 2). The outline of the gonostylar apex is actually the most obvious distinction compared to W. quercinophila , in which a ‘noseʼ is lacking and the pectinate tooth is markedly broader. The elongate-subtrapezoid tegmen is broadly rounded apically (↓ 3), not blunt-ended as in W. quercinophila , and has sharply contoured flaps ventrolaterally. The aedeagal apodeme is broadest on the basal half, then gradually narrowed, and broadened again at the apex, which is not as distinctly pointed as in W. quercinophila . Larvae and females of W. haushoferorum are unknown.

DNA barcode

CO1 sequences (642‒652bp) of the type specimens specified below is available in BIN BOLD:AER2251. A search in BOLDʼs BIN Database retrieved no further result for this BIN (accessed 25 Aug. 2023).

Etymology

The name renders honor to the Haushofer family of Gut Hartschimmel, a long-standing farm in Upper Bavaria and the type locality of several of the new species described here, including W. haushoferorum sp. nov. The farming system of Gut Hartschimmel integrates effective measures to protect the rich biodiversity on the cultivated land, a fact reflected, among others, in an extraordinarily interesting fauna of mycophagous gall midges.

Type material

Holotype

GERMANY • ♂; Bavaria, Weilheim, Pähl, Hartschimmelhof ; 47°94′24″ N, 11°18′33″ E; 20 Jun.‒12 Jul. 2020; D. Doczkal and K. Grabow leg.; Malaise trap; nutrient-poor pasture; BOLD GBDTA10321-21 ; ZSM-DIP-42307-F01 .

Paratypes

GERMANY • 1 ♂; same data as for the holotype; BOLD GBDTA10326-21 ; ZSM-DIP-42307-F06 • 1 ♂; same data as for preceding but 47°93′99″ N, 11°18′30″ E; fen; BOLD GBDTA10377-21 ; ZSM-DIP-42308-B10 • 1 ♂; same data as for preceding; BOLD GBDTA10418-21 ; ZSM-DIP-42308-F03 • 1 ♂; same data as for preceding; BOLD GBDTA10421-21 ; ZSM-DIP-42308-F05 • 1 ♂; same data as for preceding; BOLD GBDTA10420-21 ; ZSM-DIP-42308-F06 .

Other characters

Male

BODY LENGTH. 2.0‒ 2.3 mm.

HEAD. Eye bridge dorsally 3‒4 ommatidia long. Antenna markedly shorter than body; scape larger than pedicel, both brighter than flagellum; 12 flagellomeres, translucent sensilla on flagellomeres 1‒10. Fourth flagellomere with neck 0.6× length of node, node 1.5× as long as broad; sensory hairs numerous, translucent sensilla multiform, straight to U-shaped, occasionally even irregularly branched ( Fig. 4B ). Palpus slightly shorter than head height, 4 setae-bearing segments, fourth segment longest of all. Labella of normal size.

THORAX. Pronotal setae about 30. Anepimeral setae absent. Mediotergal lateral microtrichia a little enlarged. Parascutellar area bright, vaguely contoured.

WING. About as long as body. Length / width ratio 2.2. Costal cell slightly reinforced. M 4 long, nearly straight, CuA strongly bent, both veins extending to wing margin.

LEGS. With both pointed and blunt-ended scales. Basitarsal spines absent. Fore tibia and T 2 of nearly same length. Acropods: claws slightly bent, basal tooth large; empodia vestigial.

ABDOMEN. Pleural membrane with setae and scales.

TERMINALIA ( Fig. 4A ). Ninth tergite ¾ of gonopodal length, setae confined to posterior and lateral portions; margin of indentation broadly pigmented; anterior margin straight, indistinct. Gonocoxal synsclerite broader than long; ventral emargination U-shaped, sharply contoured and with large unsclerotized area basally; ventroanterior margin usually with small subtriangular outgrowth; dorso- and ventroposterior portions ending at same level; dorsal apodemes moderately long. Gonostylus very slightly bent, twice as long as broad; basolateral apophysis fairly large, angulate. Tegmen sharply contoured; parameral apodemes of normal size. Solid basal portion of aedeagal apodeme moderately long. Aedeagal bulge with closely spaced rows of tiny spikes.

Figures

Fig. 4. Winnertzia haushoferorum sp. nov., holotype, ♂ (ZSM-DIP-42307-F01). A. Terminalia, ventral view. B. Fourth flagellomere, lateral view. Scale lines: 0.05 mm. The numbered arrows indicate diagnostic characters (see text).