Bryocrypta lobata Mamaev, 1966

Jaschhof, Mathias & Jaschhof, Catrin, 2020, The Porricondylini (Diptera: Cecidomyiidae: Porricondylinae) of Sweden revisited: descriptions of nineteen new species of ten genera, including a new genus, Zootaxa 4728 (2), pp. 151-182 : 177

Bryocrypta lobata Mamaev

Fig. 49

Bryocrypta lobata , previously known from three males collected in the 1960s in Ukraine ( Mamaev 1966), is reported here from southeast Sweden. The single male in our material fits perfectly Mamaev’s (1966) verbal description of the outline of gonocoxa, gonostylus and tegmen; illustrations of the genitalia of this species were previously missing. The correctness of our identification was validated by a micrograph of the genitalia of the holotype specimen of B. lobata (type number P-Di0125 in the Zoological Museum, Lomonosov State University, Moscow, Russia) provided to us through the kindness of Marina G. Krivosheina.

Diagnosis. Bryocrypta lobata ( Fig. 49 ) differs from other species of Bryocrypta in the gonostylus, whose apex is markedly narrower than the somewhat bulbous base (↓ 4); the gonocoxal synsclerite, whose anterior margin is evenly, broadly rounded (↓ 5) rather than unevenly truncate; and the tegmen, which is unusually heavy, parallel-sided and tapered apically (↓ 6). The roughly V-shaped gonocoxal emargination, which is deeper than in other Bryocrypta (↓ 7), has a small, soft bulge basally that is beset with microtrichia but no setae.

Material studied. Sweden: 1 male, Öland , Mörbylånga, Gamla Skogsby (Kalkstad), mixed broadleaf forest, 27 June–30 July 2014, MT, MCJ (spn. CEC 1915 in NHRS) .

Remark on the occurrence. The site where our specimen of B. lobata was collected has been the target of further Malaise trapping in the following years, with the total effort amounting to several hundred trapping days. Since no further specimen could be obtained, B. lobata must be regarded as a prime example of a rare species.

Figures

FIGURES 48–49. Male genitalia of Bryocrypta angustata (48) and Bryocrypta lobata (49), ventral, specimens from Sweden. Scales 0.05 mm. Arrows refer to characters described in the diagnoses.