Longiantrum burmaensis Fibiger, 2010

FIBIGER, MICHAEL, 2010, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea) Part 3, Taxonomy of the Tactusinae, Zootaxa 2583 (1), pp. 1-119 : 56-57

Longiantrum burmaensis Fibiger , new species

( Plate 7 , figure 3; male genit. plate 16, figure 5; female genit. plate 24, figure 5)

Paratypes: 2 males, 1 female, with data as holotype, but genit. preps 3741 and 3742 (female) M. Fibiger. Colls BMNH and MF .

Diagnosis. Imago (external). Wingspan: 11–12 mm.

Head, patagia, anterior part of tegulae, prothorax, basal part of costa, costal part of medial area, subterminal, and terminal area, including fringes: blackish brown; costal medial area quadrangular.

Forewing ground colour: light yellow grey; unicolorous in most basal area; other parts of forewing suffused by black and brown areas.

Crosslines: untraceable, except indistinct subterminal and subterminal lines.

Terminal line: well marked by black interneural dots.

Reniform stigma: indistinct, small, white.

Hindwing: light grey; fringes beige.

Underside: forewing light brown, hindwing light grey.

Male genitalia. Tegumen: narrow throughout.

Vinculum and saccus: very stout, three times as broad as tegumen.

Saccus: short, broad or narrowly U shaped.

Valvae: relatively narrow, asymmetrical.

Clasper: barlike, slightly oblique to valva margins.

Ampulla: very large; bilobed; slightly asymmetrical; that of right valva larger; lobes ventrally wide and apically rounded; tapered towards tip, which is one fifth as wide as broadest part (apo.).

Digitus: fingerlike, inwardly directed (apo.).

Juxta: appearing as two symmetrical plates, medially narrowest and most heavily sclerotised (apo.).

Anellus plate: prominently asymmetrical; golf clublike, with elongated club (apo.).

Phallus: extremely long, narrow, and clockwise coiled; tapered smoothly to pointed tip; coecum short, broadest medially of coecum (apo.).

Vesica: armed with a narrow, sclerotised plate with tiny cornuti (apo.).

Female genitalia. Ovipositor: short; smoothly rounded posteriorly and at corners.

Posterior apophyses: as long as ovipositor.

Anterior apophyses: 0.75 length of posterior apophyses; fused inside to fused 7 th –8 th segment (apo.).

7 th and 8 th abdominal segment: strongly fused throughout (apo.).

Ostium: small, circular, displaced to left, positioned at posterior end of 7 th segment (apo.).

Antrum: extremely long and narrow, anterior coils forming two loops (apo.).

Ductus bursae: membranous, long and narrow; continuing coiled from antrum; 2.5 times as long as corpus bursae (apo.).

Corpus bursae: globular.

Appendix bursae: arising posteriorly from ductus bursae.

Signum: cross shaped.

Differential diagnosis. L. burmaeensis differs from other Longiantrum species in:

- yellow ground colour, black and dark brown from postmedial line outwards;

male genitalia, in

- 1/3 width of vinculum and saccus;

- ampulla lobes large and long, tapered to dorsal tip;

- anellus golf clublike, with large club;

- phallus broadest medially of coecum;

female genitalia, in

- antrum extremely long and narrow, anteriorly coiled;

Figures

PLATE 7. Figures 1–8. Longiantrum, Abes, Asyprocessa, Tantulius, and Asymelissa species, adults. 1, Longiantrum coclea, female holotype, Vietnam N, Ban En Base Camp; 2, L. legraini, female holotype, Thailand, Loei; 3, L. burmaensis, male holotype, Myanmar N, Htawgaw; 4, L. quadra, male holotype, Vietnam N, Tonkin; 5, Abes vedi, female holotype, Thailand N, Chiang Mai; 6, Asyprocessa wapi, male holotype, Laos, Wapi; 7, A. laevi, female holotype, Thailand, Chiang Mai; 8, A. spinus, male holotype, Malaysia W, Penang.