Obscura davisi Fibiger
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publication ID |
https://doi.org/ 10.11646/zootaxa.2583.1.1 |
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persistent identifier |
https://treatment.plazi.org/id/7C67FC6F-2D75-FFE0-FF28-FE2CEC6C7666 |
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treatment provided by |
Felipe |
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scientific name |
Obscura davisi Fibiger |
| status |
sp. nov. |
Obscura davisi Fibiger View in CoL , new species
( Plate 8 View PLATE 8 , figure 8 and plate 9, figure 1, 2; male genit. plate 18, figure 2; female genit. plate 25, figure 2)
31.i.–8.ii.1970, leg. D. Davis & Row, coll. USNM .
Paratypes: 9 males, 4 females. 2 males, 1 female with same data as holotype ; 2 female, Sri lanka, Rat. District , Uda Walawe, 300 ft., 1.viii.1973, leg. Ginter Ekis, genit. preps 6075, 6091 M. Fibiger ; 2 males, Sri Lanka, Jaf. District , Chundikkulam Sanct., 25 ft., 7.xi.1976, leg. G.F. Hevel et al., genit. preps 5708, 5709 M. Fibiger ; 1 male, Sri Lanka, Tri. District , China Bay, 200 ft., 9–11.xi.1976, leg. G.F. Hevel et al., genit. prep. 6170 M. Fibiger ; 3 males, Sri Lanka, Amp. District , Inginiyagala, 250 ft. , 1 sp. 7–8.ix.1975, leg. D.M. Davis et al., and 2 sp. 21– 24.xi.1976; leg. G.F. Hevel et al.; 1 male, Sri Lanka, Anu. District , Wildlife Soc. Bungalow , Hunuwilagama, Wilpattu, 200 ft., 10–19.iii.1970, leg. D. Davis & Row ; 1 female, Sri Lanka, Kan. District , Teldeniya, 1400 ft., 18– 20.xi.1976, leg. G.F. Hevel et al., genit. prep. 5710 M. Fibiger. Colls USNM and MF .
Diagnosis. Image (external). Wingspan: 7–9 mm (apo.).
Head, patagia, anterior part of tegulae, prothorax, basal part of costa, costal part of medial area: black, costal-medial area trapezoid.
Forewing ground colour: grey, suffused with brown and black scales.
Abdomen: grey, with dorsal tuft on basal segment.
Crosslines: antemedial and subterminal line present, relatively well marked; brown suffused with brown scales; subterminal line outwards beige outlined (apo.);
Terminal line: marked by black interneural dots.
Reniform stigma: broadly ovoid, yellow.
Male genitalia. Tegumen: relatively narrow throughout, laterally narrow platelike (apo.).
Vinculum: relatively stout, twice as broad as tegumen.
Saccus: tip long and narrow, V shaped (apo.).
Valvae: relatively narrow, slightly asymmetrical.
Clasper: barlike, slightly oblique to valva margins.
Ampulla: relatively small; slightly asymmetrical; semi-globular, apically smoothly rounded.
Juxta: slightly wider than long, platelike.
Phallus: almost straight, slightly curved, broadest by ductus ejaculatorius (apo.).
Vesica: with sclerites.
Female genitalia. Ovipositor: short, smoothly rounded posteriorly and at corners.
Posterior apophyses: as long as ovipositor.
Anterior apophyses: slightly longer than posterior apophyses (type-species).
7 th and 8 th abdominal segment: fused throughout.
Ostium: narrow; slightly displaced to left (apo.).
Antrum: cylindrical, twice as long as posterior apophyses, basal half medially expanded, posterior half cylindrical (apo.).
Ductus bursae: membranous and narrow, 1.5 times longer than corpus bursae (apo.).
Corpus bursae: globular.
Appendix bursae: arising posteriorly from ductus bursae.
Signum: cross shaped.
Bionomics. Some specimens collected in scrub-thorn forest in Malaise trap, and at black light.
Differential diagnosis. O. davisi differs from other Obscurini species in:
- small size, one of smallest in family;
- forewing grey, suffused with brown and black scales;
- crosslines brown;
- round, yellow reniform stigma;
male genitalia, in
- posterior apophyses almost as long as ovipositor;
female genitalia, in
- 7 th and 8 th segment fused;
- antrum cylindrical; twice as long as anterior apophyses.
Distribution. O. davisi known only from Sri Lanka.
| USNM |
Smithsonian Institution, National Museum of Natural History |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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