Asytegumen absurdus Fibiger, 2010
publication ID |
https://doi.org/ 10.11646/zootaxa.2583.1.1 |
persistent identifier |
https://treatment.plazi.org/id/7C67FC6F-2D78-FFE5-FF28-FCA9EB0977E8 |
treatment provided by |
Felipe |
scientific name |
Asytegumen absurdus Fibiger |
status |
sp. nov. |
Asytegumen absurdus Fibiger View in CoL , new species
( Plate 9 View PLATE 9 , figure 5; male genit. plate 18, figure 5, 6; female genit. plate 25, figure 3)
Material examined. Holotype: male, Malaysia, Borneo , Sarawak, 15 mi. S Kuching, Semengoh Forest Reserve, 17.ix.1966, leg. J.F. and T. M. Clarke, genit. prep. 5727 M. Fibiger, coll. CNC.
Paratypes: 2 males, 2 females. All with same data as holotype, but 1 male with genit. prep. 5810 M. Fibiger; 1 male and 1 female with 12.ix.1966, female with genit. prep. 5811 M. Fibiger; 1 female with 20.ix.1966. Colls CNC and MF .
Diagnosis. Imago (external). Wingspan: 9–10 mm.
Head, patagia, anterior part of tegulae, prothorax, basal part of costa, and along costa of medial area: blackish brown.
Forewing ground colour: brown; with dark-brown patches, including tornal patch.
Reniform stigma: ovoid, beige.
Hindwing: grey; without discal spot.
Underside: forewing brown, hindwing grey, without discal spot.
Male genitalia. Tegumen: dorsal half extremely narrow, threadlike; ventral half, including peniculus fused with fultura superior; platelike (apo.).
Vinculum and saccus: very broad, loglike, asymmetrical (apo.).
Saccus: asymmetrical; V shaped.
Fultura superior: medially across diaphragm with long, free, ventrally directed, pointed process; fused laterally and basally to tegumen; apically free as two heavily asymmetrical processes, one platelike and one clublike; apical edges with humplike plates; right arm setose; left arm apically with cluster of long, narrow spines (apo.).
Valvae: prominently asymmetrical, ovoid, with long and strong sacculus and costa (apo.).
Editum : small, narrow, setose, positioned half way out, near costa (apo.).
Clasper: barlike, oblique to valva margins.
Ampulla: very large; bilobed; strongly asymmetrical; left lobe elongated, smoothly rounded; right one larger than left (apo.).
Digitus: ventro-apically fused to ampulla; dorsally developed as large, narrow processes; right one large, thumblike, as long as ventral part; left one huge, as long as valva; basal half curved, with irregular small or large, platelike processes; apical half huge, straight, spinelike (apo.).
Juxta-anellus plate: large, with hole for phallus.
Phallus: extremely long and narrow; S curved and clockwise coiled throughout; apical curve most prominent; distal sclerotised ¼ of phallus reduced to narrow rodlike extension; carina with 3 small spines (apo.).
Vesica: armed basally with a small spinelike cornutus.
Female genitalia. Ovipositor: short, smoothly elongated posteriorly (apo.).
Posterior apophyses: as long as ovipositor.
Anterior apophyses: slightly longer than posterior apophyses.
6 th, 7 th, and 8 th abdominal segments: totally fused; 8 th segment naked, 7 th and 6 th segments setose (apo.).
Ostium: large, round, displaced to left, positioned anteriorly on 7 th segment.
Antrum: basally wide, cylindrical; slightly longer than wide; otherwise long and narrow; clockwise coiled; heavily sclerotised (apo.) (antrum shaped as phallus, even anterior part).
Ductus bursae: posteriorly coiled, with narrow, sclerotised wall (to receive basal cornutus of vesica); otherwise membranous; narrow; 1.5 times longer than corpus bursae (apo.).
Corpus bursae: relatively large, globular.
Appendix bursae: arising posteriorly from ductus bursae.
Signum: cross shaped, longitudinally short, platelike.
Differential diagnosis. A. absurdus differs from other Obscurini species in:
- costal black patches in medial area;
- rosslines and reniform stigma indistinct;
male genitalia, in
- peniculus, vinculum, and saccus large, platelike;
- fultura superior laterally free, platelike, strongly asymmetrical;
- valva strongly asymmetrical, left one larger;
- ampulla strongly asymmetrical, relatively small;
- digitus asymmetrical, large;
- extremely long and narrow phallus, with rodlike extension;
- ductus bursae posteriorly with small, narrow and heavily sclerotised plate.
Distribution. A. absurdus is known only from Malaysia, Borneo, S Sarawak.
T |
Tavera, Department of Geology and Geophysics |
CNC |
Canadian National Collection of Insects, Arachnids, and Nematodes |
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.