Winnertzia subdentata, 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 : 32-33

Winnertzia subdentata sp. nov.

urn:lsid:zoobank.org:act:B2ADA399-FDB9-470F-891F-4519B673891B

Fig. 7

Differential diagnosis

Morphology

Winnertzia subdentata sp. nov. closely resembles W. dentata Jaschhof & Jaschhof, 2020 , a species known exclusively from southeastern Sweden ( Jaschhof & Jaschhof 2020b). Differences in the male morphology of both species are as follows (females and larvae are unknown). The most important distinction is that the gonostylar apex of W. subdentata is convex (rounded) and equipped with 2, perhaps even 3 thick, closely spaced spines that upon first sight might appear as one small, solid tooth (↓ 1, Fig. 7A ), whereas the gonostylus of W. dentata is distinctly blunt-ended and indeed equipped with a single solid tooth that is two or three times as large as an ordinary spine ( Jaschhof & Jaschhof 2020b: fig. 43). Less striking is that the basolateral apophysis of the gonostylus is smaller in W. subdentata compared with W. dentata (↓ 2). Both species are nearly identical in non-terminalia characters. The number of flagellomeres in W. subdentata is either 11 (paratype, body length 1.7 mm) or 12 (holotype, body length 2.5 mm), and in both specimens translucent sensilla are present on flagellomeres 1‒10, whereas the single specimen known of W. dentata has 11 flagellomeres, with the apical flagellomere long and subdivided, and translucent sensilla on flagellomeres 1‒9 ( Jaschhof & Jaschhof 2020b).

DNA barcode

CO1 sequences (641‒652bp) of the type specimens are available in BIN BOLD:ACG4326. A search in BOLDʼs BIN Database retrieved a further match for this BIN, as Cecidomyiidae sp. from Bavaria, Germany (accessed 26 Aug. 2023).

Etymology

The name ‘ subdentata ’, which in a broader sense means ‘beside dentata ’, refers to the close resemblance of the two species.

Type material

Holotype

GERMANY • ♂; Bavaria, Weilheim, Pähl , Hartschimmelhof ; 47°93′88″ N, 11°18′44″ E; 8 May‒5 Jun. 2020; D. Doczkal and K. Grabow leg.; Malaise trap; nutrient-poor pasture; BOLD GBDTA10432-21 ; ZSM-DIP-42308-G05 .

Paratype

GERMANY • 1 ♂; Baden-Württemberg, Malsch, Luderbusch ; 48°91′31″ N, 8°33′25″ E; elev. 117 m; 31 May‒7 Jun. 2020; D. Doczkal and K. Grabow leg.; Malaise trap; south-facing hill slope; BOLD GBDTA10468-21 ; ZSM-DIP-42309-B06 .

Figures

Fig. 7. Winnertzia subdentata sp. nov. A. Holotype, ♂, terminalia, ventral view (ZSM-DIP-42308-G05). B. Paratype, ♂, fourth flagellomere, lateral view (ZSM-DIP-42309-B06). Scale lines: 0.05 mm. The numbered arrows indicate diagnostic characters (see text).