Bellulia basalia Fibiger
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|Bellulia basalia Fibiger|
Bellulia basalia Fibiger , new species
( Plate 10, figure 3; male genit. plate 19, figure 5; female genit. plate 25, figure 6)
Material examined. Holotype: male, Vietnam N, 5 km E Bao Loc, Suoi Loc stream, 24.x.1988, leg. S. Mahunka, J. Oláh & T. Vásárhelvi, coll. HNHM.
Paratypes: 2 males, 1 female: same data as holotype ; 2 males genit. preps 5922 and 5924, and 1 female genit. prep. 5923 M. Fibiger. Colls HNHM and MF .
Diagnosis. Imago (external). Wingspan: 13–15 mm.
Forewing: purplish black.
Crosslines: black, indistinct, medial shade well marked.
Reniform stigma: distinct, round, yellowish, outlined black.
Hindwing: greyish brown, without discal spot.
Underside: unicolorous grey.
Abdomen: grey with black crest dorsally on first segment.
Male genitalia. Tegumen and fultura superior: dorsal part of tegumen weak, narrow; ventral part fused with fultura superior with a prominent, loglike process on each side, flattened at apices (apo.), right one shorter and apically broader.
Vinculum: short, loglike.
Saccus: short, V shaped.
Valvae: slightly asymmetrical.
Sacculus: strongly asymmetrical, dorsally rounded, right one larger.
Ampulla: slightly asymmetrical, narrow medially.
Anellus: fused with juxta, forming full circle around phallus.
Phallus: broadest by ductus ejaculatorius, slightly curved clockwise, slightly tapered towards tip.
Vesica: basally with one small, triangular cornutus; subapically with row of 5 equally formed cornuti (apo.).
Female genitalia. Ovipositor: quadrangular, corners rounded.
Posterior apophyses: slightly longer than ovipositor.
7 th abdominal segment: heavily sclerotised, posteriorly U shaped by postvaginal plate from 8 th segment.
Ostium: slightly displaced to left, positioned anteriorly on 7 th segment.
Ductus bursae: long, cylindrical, slightly coiled, basal half membranous, apical half heavily sclerotised (apo.).
Corpus bursae: globular, with cross-shaped signum.
Differential diagnosis. B. basalia is in size above average for species of Bellulia . Unique in that processes from fultura superior rather short and flattened at apices; vesica with one basal and 5 subapical cornuti in a row; female genitalia with ductus bursae membranous in anterior half, heavily sclerotised in apical half.
Distribution. Known only from type-locality in North Vietnam.
Tavera, Department of Geology and Geophysics
Hungarian Natural History Museum (Termeszettudomanyi Muzeum)
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