Megalota delphinosema Brown 2009
Creators: name: Brown, John W.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Megalota
Megalota delphinosema

description: Key to the males of the delphinosema group based on genitalia   
 1. Valva with long, transverse, flattened flange 0.6 distance from base to apex (Fig. 33)..............................9. spinulosa   
- Valva without flattened flange from valva.................................................................................................................... 2  
 2. Valva without dense cluster of spiniform setae (Fig. 34)....................................................................... 10. simpliciana   
- Valva with at least one dense cluster of spiniform setae............................................................................................... 3  
3. Basal process of the valva short and stout, <3 times as long as wide (Figs. 45, 47)................................................... 4  
- Basal process of the valva long and slender,> 3 times as long as wide....................................................................... 5  
 4. Basal process of the valva ca. 2 times as long as wide, simple, slightly dilated and rounded distally; valva with a single patch of elongate setae in basal 0.25 (Fig. 45)........................................................................................ 21. beckeri   
 - Basal process of the valva ca. 2.5 times as long as wide, widest in middle; valva with a small cluster of spiniform setae subbasally and a second patch from ventral edge ca. 0.5 distance from base to apex (Fig. 47)..........22. flintana   
5. Valva with conspicuous basally directed process or spiny lobe near middle, with associated patch of setae near midventer, with setae of setal patch longer than 0.25 length of valva (Figs. 38, 44).......................................................... 6  
- Valva without basally directed process or lobe, with setae of setal patch(es) less than 0.25 length of valva............... 7  
 6. Valva with smooth process near middle representing basal edge of abruptly broadened mesal portion of valva, with a patch of elongate slender setae immediately below the process (Fig. 38)............................................. 14. ceratovalva   
 - Valva with spiny lobe near middle, with a patch of long flattened, curved setae immediately below lobe (Fig. 44)..................................................................................................................................................................... 20. chamelana   
 7. Phallus long and slender, ca. 0.7 times length of valva, strongly and evenly curved throughout, with single external thorn at tip; valva with a small triangular flange and associated patch of short spiniform setae near outer edge of basal cavity (Fig. 43).................................................................................................................................19. gutierrezi   
- Phallus shorter and stouter, <0.6 times length of valva, weakly curved or angled, with variable number of external spines; valva without triangular flange near outer edge of basal cavity....................................................................... 8  
 8. Basal process of the valva comparatively stout, length ca. 3 times width, without elbowed bend near middle (Fig. 32)...................................................................................................................................................................8. ochreoapex   
- Basal process of the valva relatively sender, length> 4 times width, with elbowed bend on inner surface near middle....................................................................................................................................................................................... 9  
 9. Valva with only one patch of setae – a distinct cluster of spiniform setae near middle (Fig. 42)..............18. crassana   
- Valva with two patches of setae – a distinct cluster of spiniform setae from venter near middle and a second, more basal, patch (or linear region) of finer, sparser setae.................................................................................................. 10  
 10. Phallus characteristically angled or bent at ca. 120° at middle; a distinct dorsal thorn at the angle; and vesica with a single large cornutus from a distinct ovoid plate (Fig. 35)................................................................. 11. delphinosema   
- Phallus bent, curved, or angled, but not ca. 120° at middle; one or more dorsal thorns, but not at the point of angle or bend; and vesica with cornuti variable, but not from a distinct ovoid plate............................................................... 11  
 11. Setae of subbasal patch longer than setae of spiniform cluster (distal patch) (Fig. 40)......................... 16. longisetana   
- Setae of subbasal patch shorter than setae of spiniform cluster (distal patch)............................................................ 12  
12. Valva with discrete patch of short, finer setae located basad of cluster of long spiniform setae................................ 13  
- Valva without discrete patch of short, finer setae basad of cluster of long spiniform setae (i.e., fine setae usually scattered throughout subbasal region).............................................................................................................................. 14  
 13. Setae of subbasal patch about the same length as setae of the spiniform cluster (Fig. 37)............................13. ricana   
 - Setae of subbasal patch much shorter than setae of the spiniform cluster (Fig. 41).................................17. deceptana   
 14. Phallus with 3–4 small cornuti (Fig. 39)................................................................................................. 15. bicolorana   
 - Phallus with 1–2 larger cornuti (Fig. 36)................................................................................................. 12. jamaicana
description: Published as part of Brown, John W., 2009, The discovery of Megalota in the Neotropics, with a revision of the New World species (Lepidoptera: Tortricidae: Olethreutini), pp. 1-50 in Zootaxa 2279 (1) on pages 15-16, DOI: 10.11646/zootaxa.2279.1.1, http://zenodo.org/record/5307538