Osmylidae

Martins, Caleb Califre, Ardila-Camacho, Adrian & Aspöck, Ulrike, 2016, Neotropical osmylids (Neuroptera, Osmylidae): Three new species of Isostenosmylus Krüger, 1913, new distributional records, redescriptions, checklist and key for the Neotropical species, Zootaxa 4149 (1), pp. 1-66 : 64

Key to the Neotropical species of Osmylidae

(modified from Oswald 1994 and Ardila-Camacho & Noriega 2014)

1. Antennae longer than forewing ( Fig. 2 A); flagellomeres twice as long as broad ( Figs. 2 C); costal field with pterostigma barely perceptible ( Fig. 2 B); ocelli absent ( Figs 2 D, E).................................................... Gumilla ... 2

- Antennae shorter than forewing ( Figs 5 A; 7B; 34A; 42A); flagellomeres about as long as wide ( Fig. 13 C); costal field with pterostigma weakly to well-marked ( Figs. 5 A; 6A, B; 7A; 34A; 42A); ocelli present ( Figs. 7 B, C)...................... 3

2. Forewing with brown marks on the membrane of Rs and M veins ( Fig. 2 B)............................ .. G. adspersus

- Forewing without brown marks on the membrane of Rs and M veins ( Fig. 4 B)........................... G. longicornis

3. Forewing MP fork near wing base, usually at the level of midpoint between MA stem and first branch of Rs ( Figs 6 A, B; 37B).................................................................................................... 4

- Forewing MP fork more distally located, usually near to the mid-length of wing ( Figs 22 B; 24C; 34A)................. 8

4. Inner and outer gradate series well-delimited, with conspicuous fuscous brown maculation ( Figs 6 A, B).................................................................................................. Paryphosmylus ornatus

- Not so well-delimited gradates series, without fuscous brown maculation ( Fig. 37 B).................... Kempynus ... 5

5. Forewing apex broadly rounded, subapical margin with a well-delimited pale lunate region posteriorly ( Fig. 37 B).................................................................................................... K. crenatus

- Forewing apex angulate, subapical margin without a well-delimited pale lunate region posteriorly ( Figs 36 A; 39A; 42A).. 6

6. Forewing without a prominent biangulate fuscous maculation distally (dark maculae of other shapes may be present) ( Fig. 39 A)........................................................................................ K.falcatus

- Forewing with a prominent biangulate fuscous maculation distally ( Figs 34 A, 42A)................................ 7

7. Proximal third of subcostal region of forewing without well-delimited fuscous spots ( Fig. 34 A); free distal lobes of female ninth gonapophyses enclosing a narrow, proximally acute space in ventral view ( Fig. 34 C).............. K. digoniostigma

- Proximal third of subcostal region of forewing with two or three well-delimited fuscous spots ( Fig. 42 A); free distal lobes of female ninth gonapophyses enclosing a broad, proximally rounded space in ventral view ( Fig. 42 C)............. K. tjederi

8. Forewing narrow, posterodistal margin falcate; hindwing membrane amber suffused ( Fig. 34 A)... Phymatosmylus caprorum

- Forewing broad, posterodistal margin convexly curved; hindwing membrane often hyaline ( Figs 7 A; 8B; 13B; 19B; 22B)........................................................................................ Isostenosmylus ... 9

9. Hindwing with maculae between the C and R1; posterior wing margin from midlength to preapical region below of pterostigma, with apices of longitudinal veins and gradate series brown infuscated, remainder surface of veins mainly yellow- ish ( Fig. 22 B)................................................................................ I. nigrifrons

- Hindwing completely hyaline or with few small amber spots; venation more or less uniformly pigmented ( Figs 7 A; 13B; 19B; 22B)............................................................................................... 10

10. Forewing dotted with numerous small amber spots on veins and wing membrane ( Fig. 8 B; 13B; 24C)................ 11

- Forewing weakly pigmented, with few amber spots ( Figs 28 A; 7A; 10A, C; 16B; 19B)............................. 13

11. Pterostigma not well-marked, translucent ( Fig. 8 B); posterior margin of female seventh sternite in ventral view produced in two blunt tips and medially incised ( Fig. 9 D)................................................... I. irroratus n. sp.

- Pterostigma well-marked ( Figs. 13 B; 24B); posterior margin of female seventh sternite in ventral view rounded ( Figs 15 C, D; 26C, D)............................................................................................ 12

12. Female ninth gonapophyses Y-shaped in ventral view with apical lobes short and simple ( Figs. 26 C, D); male ectoproct in lat- eral view posteroventrally with a bluntly rounded lobe ( Fig. 25 B)................................... I. pulverulentus

- Female ninth gonapophyses in ventral view with basal half widened, apical lobes bilobate ( Figs 15 C, D); male ectoproct in lat- eral view posterodorsally with a bluntly rounded lobe ( Figs 14 B, C).................................... I. contrerasi

13. Forewing with numerous costal crossveins forked near to the costal margin ( Fig. 28 A)............ I. septemtrionalandinus

- Forewing with costal crossveins unforked or at least with few forks ( Figs 7 A; 10A, C; 16B; 19B).................... 14

14. Male ectoproct in lateral view poteromedially with a prominent pointed process ( Figs 9 A, B; 20 A, B)................. 15

- Male ectoproct in lateral view posterodorsally with a prominent bifurcated process ( Figs 7 B, C; 17A, B).............. 16

15. Distal 1/3 of forewing between R1 and MP fork with numerous small amber spots on crossveins ( Figs. 10 A, C); male tenth gonocoxites with apical portion of ventral branches acute ( Figs 9 C, D).............................. I. julianae n. sp.

- Distal 1/3 of forewing between R1 and MP with very few amber spots on crossveins ( Fig. 19 B); male tenth gonocoxites with apical portion of ventral branches rounded ( Figs 20 A, B)............................................. I. fusciceps

16. Male ninth gonocoxites in ventral view with apex of medial lobe straight, posterolaterally slightly emarginated ( Figs. 7 E, F)....................................................................................... I. bifurcatus n. sp.

- Male ninth gonocoxites in ventral view with apex of medial lobe rounded, medially with a short rounded lobe ( Fig. 17 E, F).............................................................................................. I. fasciatus

Figures

FIGURE 2. Holotype of Gumilla adspersus Navás, 1912, male. A) Habitus dorsal; B) Wings; C) Head and thorax, dorsal view; D – E) Head, dorsal view; F) Labels. Photos provided by Harald Bruckner (Naturhistorisches Museum (NHMW), Wien [= Vienna], Austria).

FIGURE 4. Holotype of Gumilla longicornis (Walker, 1853). A) Habitus dorsal; B) Wings; C) Labels. Photos provided by Benjamin Price (Natural History Museum (BMNH), London, England, United Kingdom).

FIGURE 5. Holotype of Paryphosmylus ornatus Krüger, 1913, female. A) Habitus dorsal; B) Habitus lateral. Photos provided by Tomasz Huflejt (Museum and Institute of Zoology of the Polish Academy of Sciences (PAN), Warsaw, Poland).

FIGURE 6. Holotype of Paryphosmylus ornatus Krüger, 1913, female. A) Forewing; B) Hindwing; C) Head, frontal view; D) Abdominal apex, lateral view; E) Labels. ect (ectoproct), gcx IX (ninth gonocoxite), T IX (ninth tergite). Photos provided by Tomasz Huflejt (Museum and Institute of Zoology of the Polish Academy of Sciences (PAN), Warsaw, Poland).

FIGURE 7. Holotype of Isostenosmylus bifurcatus n. sp., male. A) Habitus dorsal; B) Head and thorax, dorsal view; C – D) Terminalia, lateral view; E – F) Terminalia, ventral view. ect (ectoproct), gcx IX (ninth gonocoxite), gcx X (tenth gonocoxite), gph IX (ninth gonapophysis), S VII (seventh sternite), S VIII (eighth sternite), S IX (ninth sternite), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth tergite).

FIGURE 8. Holotype of Isostenosmylus irroratus n. sp., female. A) Habitus dorsal; B) Wings; C) Head and prothorax, dorsal view; D) Labels. Photos provided by Marco Gaiani (Museo del Instituto de Zoología de la Facultad de Agronomía de la Universidad Central de Venezuela, Maracay, Venezuela).

FIGURE 9. Holotype of Isostenosmylus irroratus n. sp., female. A – B) Terminalia, lateral view; C – D) Terminalia, ventral view. ect (ectoproct), gcx VIII (eighth gonocoxite), gcx IX (ninth gonocoxite), gph VIII (eighth gonapophysis), gph IX (ninth gonapophysis), S VII (seventh sternite), spm (spermatheca), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth tergite). Photos provided by Marco Gaiani (Museo del Instituto de Zoología de la Facultad de Agronomía de la Universidad Central de Venezuela, Maracay, Venezuela).

FIGURE 10. Isostenosmylus julianae n. sp. A) Holotype male, habitus lateral; B) Holotype male, labels; C) Habitus lateral of female; D) Labels of female. Photos provided by Harald Bruckner (Naturhistorisches Museum (NHNM), Wien [= Vienna], Austria).

FIGURE 13. Holotype of Isostenosmylus contrerasi Ardila-Camacho & Noriega, 2014, female. A) Habitus dorsal; B) Wings; C) Head and thorax, dorsal view.

FIGURE 14. Isostenosmylus contrerasi Ardila-Camacho & Noriega, 2014, male. A – C) Terminalia, lateral view; D – E) Terminalia, ventral view. ect (ectoproct), gcx IX (ninth gonocoxites), gcx X (tenth gonocoxites), gph IX (ninth gonapophysis), hyi (hypandrium internum), S VII (seventh sternite), S VIII (eighth sternite), S IX (ninth sternite), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth tergite).

FIGURE 15. Isostenosmylus contrerasi Ardila-Camacho & Noriega, 2014, female. A – B) Terminalia, lateral view; C – D) Terminalia, ventral view; E – F) Spermathecae. ect (ectoproct), gcx VIII (eighth gonocoxite), gcx IX (ninth gonocoxite), gph VIII (eighth gonapophysis), gph IX (ninth gonapophysis), S VII (seventh sternite), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth tergite).

FIGURE 17. Holotype of Isostenosmylus fasciatus Kimmins, 1940, male. A – B) Terminalia, lateral view; C – D) Complex of gcx X, lateral view; E – F) gcx IX + gph IX, lateral view. ect (ectoproct), gcx IX (ninth gonocoxite), gph IX (ninth gonapophysis), hyi (hypandrium internum), S VII (seventh sternite), S VIII (eighth sternite), S IX (ninth sternite), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth sternite). Photos provided by Benjamin Price (Natural History Museum (BMNH), London, England, United Kingdom).

FIGURE 19. Holotype of Isostenosmylus fusciceps Kimmins, 1940, male. A) Habitus dorsal; B) Wings; C) Labels. Photos provided by Benjamin Price (Natural History Museum (BMNH), London, England, United Kingdom).

FIGURE 20. Holotype of Isostenosmylus fusciceps Kimmins, 1940, male. A – B) Terminalia, lateral view; C) gcx IX + gph IX, lateral view; D) Complex of gcx X, lateral view. ect (ectoproct), gcx IX (ninth gonocoxite), gph IX (ninth gonapophysis), S VII (seventh sternite), S VIII (eighth sternite), S IX (ninth sternite), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth sternite). Photos provided by Benjamin Price (Natural History Museum (BMNH), London, England, United Kingdom). (C and D after Kimmins, 1940, modified).

FIGURE 22. Holotype of Isostenosmylus nigrifrons Kimmins, 1940, male. A) Habitus dorsal; B) Wings; C) Labels. Photos provided by Benjamin Price (Natural History Museum (BMNH), London, England, United Kingdom).

FIGURE 25. Isostenosmylus pulverulentus (Gerstaecker, 1893), male. A – B) Terminalia, lateral view; C) Complex of gcx X, lateral view. D) gcx IX + gph IX, lateral view. ect (ectoproct), gcx IX (ninth gonocoxite), gcx X (tenth gonocoxite), gph IX (ninth gonapophysis), S VIII (eighth sternite), S IX (ninth sternite), T VIII (eighth tergite), T IX (ninth sternite).

FIGURE 26. Isostenosmylus pulverulentus (Gerstaecker, 1893), female. A – B) Terminalia, lateral view; C – D) Terminalia, ventral view. ect (ectoproct), gcx VIII (eighth gonocoxite), gcx IX (ninth gonocoxite), gph VIII (eighth gonapophysis), gph IX (ninth gonapophysis), S VII (seventh sternite), T VIII (eighth tergite), T IX (ninth tergite).

FIGURE 28. Isostenosmylus septemtrionalandinus Ardila-Camacho & Noriega, 2014, female. A) Habitus of holotype, dorsal; B – C) Terminalia, lateral view; D – E) Terminalia, ventral view. ect (ectoproct), gcx VIII (eighth gonocoxite), gcx IX (ninth gonocoxite), gph VIII (eighth gonapophysis), gph IX (ninth gonapophysis), S VII (seventh sternite), T VII (seventh tergite), T VIII (eighth tergite), T IX (ninth tergite).

FIGURE 34. Phymatosmylus caprorum Adams, 1969, female. A) Habitus dorsal; B) Habitus lateral; C) Head and thorax, dorsal view; D) Labels. Photos provided by Leonard Munstermann and Raymond Pupedis (Peabody Museum of Natural History (PMY), New Haven, USA).

FIGURE 36. Holotype of Kempynus digoniostigma Oswald, 1994, female. A) Habitus lateral; B) Terminalia, lateral view; C) Genitalia, ventral view; D) Labels. ect (ectoproct), gcx VIII (eighth gonocoxite), gcx IX (ninth gonocoxite), gph VIII (eighth gonapophysis), gph IX (ninth gonapophysis), T VIII (eighth tergite), T IX (ninth tergite). Photos provided by Oliver Flint and Karolyn Darrow (National Museum of Natural History (NMNH), Washington, D. C., USA) (B and C after Oswald 1994, modified).

FIGURE 37. Kempynus crenatus Adams, 1971. A) Habitus dorsal; B) Wings. Photos provided by Oliver Flint and Karolyn Darrow (National Museum of Natural History (NMNH), Washington, D. C., USA).

FIGURE 39. Holotype of Kempynus falcatus Navás, 1912, female. A) Habitus dorsal; B) Labels. Photos provided by Benjamin Price (Natural History Museum (BMNH), London, England, United Kingdom).

FIGURE 42. Holotype of Kempynus tjederi Oswald, 1994, female. A) Habitus dorsal; B) Terminalia, lateral view; C) Genitalia, ventral view; D) Labels. ect (ectoproct), gcx VIII (eighth gonocoxite), gcx IX (ninth gonocoxite), gph VIII (eighth gonapophysis), gph IX (ninth gonapophysis), T VIII (eighth tergite), T IX (ninth tergite). Photos provided by Oliver Flint and Karolyn Darrow (National Museum of Natural History (NMNH), Washington, D. C., USA). (B and C after Oswald 1994, modified).