Fustis gregerseni Fibiger
publication ID |
https://doi.org/ 10.11646/zootaxa.2583.1.1 |
persistent identifier |
https://treatment.plazi.org/id/7C67FC6F-2D03-FF99-FF28-FA6BEC2C7660 |
treatment provided by |
Felipe |
scientific name |
Fustis gregerseni Fibiger |
status |
sp. nov. |
Fustis gregerseni Fibiger View in CoL , new species
( Plate 6 View PLATE 6 , figure 4; male genit. plate 15, figure 6)
Material examined. Holotype: male, W Thailand, Uthai Thani Distr., Khao Nang Rum , 400 m, 26– 27.i.1987, leg. M.G. Allen, BM 1986 – 300 , genit. prep. 3765 M. Fibiger, coll. BMNH.
Diagnosis. Imago (external). Wingspan: 14.5 mm (apo.).
Head, patagia, anterior part of tegulae, prothorax, basal part of costa, triangular patch of medial area, small patches of lower subterminal area, and terminal area, including fringes: black.
Forewing: long and narrow, with pointed apex, beige ground colour suffused with few light brown scales.
Abdomen: dark grey, with dorsal tuft on basal segment.
Crosslines: untraceable, terminal line weakly marked by black interneural dots.
Reniform stigma: beige, ovoid, black outlined.
Hindwing: beige, with narrow brown terminal line with indistinct discal spot; fringes beige.
Underside: forewing grey brown; hindwing grey, with discal spot.
Male genitalia. Tegumen: long, laterally narrow; dorso-laterally broader, platelike.
Vinculum: two branched; centre one barlike; posterior one branchlike, not curved.
Saccus: relatively long; broadly V-shaped.
Valvae: slightly asymmetrical.
Ampulla: bilobed; slightly asymmetrical; lobes tapered: dorsally broad fingerlike; ventrally broad and rounded; outer edge curved throughout (apo.)
Digitus: small, broad, quadrangular.
Anellus plate: basally asymmetrical, platelike; upwards extremely long, free, and subapically sharply angled, before tapered and upturned, pointed tip; heavily sclerotised rodlike structure; all free structures clothed with stout setae (apo.).
Phallus: coecum relatively long and smoothly rounded; broadest at large, triangularly process at tip; almost straight (apo.).
Vesica: armed with a small, slightly curved, heavily sclerotised rectangular plate (apo.).
Differential diagnosis. F. gregerseni differs from other Fustis species in:
- large size;
- shape of ampulla, especially rounded very wide and long ventral arm;
- long, apically upturned, pointed anellus;
- phallus with large and triangular process at tip; and
- vesica with rectangular heavily sclerotised plate.
Distribution. F. gregerseni known only from W Thailand.
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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