Bryocrypta longissima, 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 : 61-63

Bryocrypta longissima sp. nov.

urn:lsid:zoobank.org:act:1C3CD264-1E21-47FE-9348-CD7FD75C6B2B

Fig. 14

Differential diagnosis

Morphology

In terms of male morphology (larvae and females are unknown) the new species is a typical Bryocrypta . It resembles B. indubitata , with which it shares the very long gonostylus, the large ventroposterior outgrowths of the gonocoxal synsclerite, and the elongate-triangular tegmen ( Fig. 14A ). As regards distinctions, the gonocoxal synsclerite of B. longissima sp. nov. lacks the subtriangular lobes so prominently developed in B. indubitata ( Jaschhof & Jaschhof 2013: fig. 80a), with the result that the ventroposterior outgrowths are only slightly convex laterally, not strongly bulging (↓ 1, Fig. 14A ). Also, the gonostylus of B. longissima is 1.6 × as long as the tegmen ( Fig. 14A ) and thus longer than that of B. indubitata , where this factor is just 1.3. Finally, the flagellomeral necks of B. longissima are markedly shorter compared with those of B. indubitata : for the fourth flagellomere, the neck-to-node ratio is 1.1 in B. longissima ( Fig. 14B ) and 1.6‒1.8 in B. indubitata ( Jaschhof & Jaschhof 2013: fig. 80c). The description of B. mamaevi Fedotova, 2013 from Ethiopia ( Fedotova 2013) suggests that species closely resembles B. longissima . On the assumption that the provided information is correct, B. mamaevi is distinguished from B. longissima (characters in parentheses) by the palpus consisting of a variable 2 or 3 segments (3 or 4 segments) and by the basal flagellomeres having the necks slightly shorter than the nodes (necks slightly longer than nodes). Fedotovaʼs illustrations of the terminalia of B. mamaevi (n = 14) suggest an unusually great variation in the shape of the gonostylus ( Fedotova 2013: figs 17‒20, 28–29), which raises doubts about the accuracy of the drawings and the conspecifity of the specimens.

DNA barcode

CO1 sequences (653bp) of the two paratype specimens are available in BIN BOLD:AER0394. Search on BOLD ’ s BIN Database retrieved no further result for this BIN (accessed 26 Aug. 2023).

Etymology

The specific epithet, meaning ‘longest’, refers to the exceptional length of the gonostylus.

Type material

Holotype

GERMANY • ♂; Bavaria, Munich, Allacher Lohe Nature Reserve ; 48°19′88″ N, 11°47′54″ E; elev. 502 m; 21 Jul.‒4Aug. 2021; GBOL and R. Albrecht leg.; Malaise trap; heathland; ZSM-DIP-42307-C11 .

Paratypes

GERMANY • 1 ♂; same data as for the holotype; BOLD GBDTA10288-21 ; ZSM-DIP-42307-C04 • 1 ♂; same data as for preceding; BOLD GBDTA10294-21 ; ZSM-DIP-42307-C10 °

Other characters

Male

BODY LENGTH. 1.3‒1.5 mm.

HEAD. Antenna longer than body; scape and pedicel brighter than flagellum; circumfila on flagellomeres 1 to either 9 or 10 irregularly sinuous ( Fig. 14B ). Palpus markedly shorter than head height, either 4-segmented, with third and fourth segments equally long, or 3-segmented, with third segment slightly longer than second.

WING. As long as body. Length /width ratio 2.9.

LEGS. Acropods: claws toothless, strongly bent beyond midlength, empodia two thirds as long as claws.

TERMINALIA ( Fig. 14A ). Gonostylus straight except for an abrupt bend apically, slightly thicker subapically than subbasally; setae short and sparse. Tegmen: apex directed posteriad rather than ventrad; outline of anterior margin varying, either straight or concave.

Figures

Fig. 14. Bryocrypta longissimasp. nov. A. Holotype, ♂, terminalia, ventral view (ZSM-DIP-42307-C11). B. Paratype, ♂, fourth flagellomere, lateral view (ZSM-DIP-42307-C04). Scale lines: 0.05 mm. The numbered arrow indicates a diagnostic character (see text).