Myrmeleontini Latreille, 1802

Lin, Yu-Hsiu Hugh, Ko, Chiun-Cheng & Tseng, Hui-Yun, 2024, Taxonomic revision of the antlion tribe Myrmeleontini (Neuroptera: Myrmeleontidae) of Taiwan, European Journal of Taxonomy 969, pp. 1-61 : 4-5

publication ID	https://doi.org/10.5852/ejt.2024.969.2743
publication LSID	lsid:zoobank.org:pub:3705B6E3-C2DD-42B1-9ED6-1ABBD2EBC20C
DOI	https://doi.org/10.5281/zenodo.14205961
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treatment provided by	Plazi (2024-11-22 14:03:00, last updated 2024-11-29 00:35:37)
scientific name	Myrmeleontini Latreille, 1802
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Treatment

Tribe Myrmeleontini Latreille, 1802

Diagnosis of adult

Forewing vein CuP arising at or very near basal crossvein; forewing vein 2A running close to 1A for short distance, then bending at a sharp angle toward 3A. Hindwing with four or more crossveins at presectoral area. Forewing and hindwing vein RP arising distant from base. Tarsomere 1 of hind leg shorter than tarsomere 5. Male with or without pillula axillaris.

Identification key to the adults of Myrmeleontini species in Taiwan

1. Hindwing longer than or as long as forewing ................................................................................... 2

– Hindwing shorter than forewing ....................................................................................................... 5

2. Wings broad, acute at apex; male mediuncus three-pronged shaped from caudal view ( Figs 4C View Fig , 7C View Fig ); female anterior gonapophyses widely separated, long, and shorter than posterior gonapophyses; lateral gonapophyses long ( Figs 3A–B View Fig , 6A–B View Fig ) ........................................................3 (genus Baliga )

– Wings variable; male mediuncus not as above; female anterior gonapophyses not widely separated, short, lobed .......................................................................................................4 (genus Myrmeleon )

3. Wings with large, white pterostigma; costal area with interconnected crossveins from apical ⅓ to stigma ( Fig. 2C View Fig ); ventral side of the abdomen whitish-yellow ( Fig. 1A View Fig ) ........................................... ............................................................................................................. B. asakurae ( Okamoto, 1910)

– Wings with small pterostigma; costal area with only few interconnected crossveins ( Fig. 5C View Fig ); ventral side of the abdomen dark brown ( Fig. 1B View Fig ) ...................... B. brunneipennis ( Esben-Petersen, 1913)

4. Vertex mostly yellow with dark brown spots; pronotum and mesonotum mostly dark brown with whitish-yellow markings ( Fig. 11B View Fig ); ventral side of the abdomen paler than dorsal side ( Fig. 1C View Fig ) .. ..................................................................................................... M. littoralis Miller & Stange, 1999

– Vertex mostly dark brown with a pair of yellow spots; pronotum mostly whitish-yellow with two pairs of dark brown spots on the anterior half and dark brown markings on the posterior half ( Fig. 8B View Fig ) .. ............................................................................................................. M. tenuipennis Rambur, 1842

5. Large sized; pronotum dark brown with a thin yellow line in the middle and a pair of yellow bands on the side of the anterior margin ( Fig. 14B View Fig ) ................................. M. wangi Miller & Stange, 1999

– Small to medium-sized; pronotum not as above ............................................................................... 6

6. Vertex completely dark brown ( Figs 20B View Fig , 26B View Fig ) ............................................................................... 7

– Vertex with yellow or brown markings ( Figs 17B View Fig , 23B View Fig ) .................................................................. 8

7. Pronotum, mesonotum and metanotum almost fully dark brown ( Fig. 26B View Fig ) ..................................... ................................................................................................ M. taiwanensis Miller & Stange, 1999

– Pronotum dark brown with a yellow medial line, anterior half with yellow spots; mesonotum and metanotum with thin yellow line on the posterior margin ( Fig. 20B View Fig ) ................................................ ................................................................................................... M. persimilis Miller & Stange, 1999

8. Pronotum brown with yellow bands on the side of anterior margin ( Fig. 23B View Fig ) ................................. .............................................................................................................. M. punctinervis Banks, 1937

– Pronotum mostly whitish-yellow with brown markings ( Fig. 17B View Fig ) ................................................... .................................................................................................... M. heppneri Miller & Stange, 1999

References

Banks N. 1937. Neuropteroid insects from Formosa. Philippine Journal of Science 62: 255 - 291.

Esben-Petersen P. 1913. H. Sauter's Formosa-Ausbeute. Planipennia II, Megaloptera and Mecoptera. Entomologische Mitteilungen 2: 222 - 228, 257 - 265. Available from https: // www. biodiversitylibrary. org / page / 10021065 [accessed 22 Jan. 2024].

Latreille P. A. 1802. Histoire naturelle, generale et particuliere de Crustaces et des Insectes. F. Dufart, Paris. https: // doi. org / 10.5962 / bhl. title. 15764

Miller R. B., Stange L. A. & Wang H. - Y. 1999. New species of antlions from Taiwan (Neuroptera: Myrmeleontidae). Journal of the National Taiwan Museum 52: 47 - 78.

Okamoto H. 1910. Die Myrmeleoniden Japans. Wiener Entomologische Zeitung 29: 275 - 300.

Rambur J. P. 1842. Histoire naturelle des Insectes, Nevropteres. Librairie encyclopedique de Roret, Fain et Thunot, Paris.

Figures

Fig. 4. Baliga asakurae (Okamoto, 1910), male genitalia (NTU). A. Lateral view. B. Ventral view. C. Caudal view. Abbreviations: gon = gonarcus; med = mediuncus; par = parameres. Scale bar = 0.5 mm.

Fig. 7. Baliga brunneipennis (Esben-Petersen, 1913), male genitalia (NTU). A. Lateral view.B. Ventral view. C. Caudal view. Abbreviations: gon = gonarcus; med = mediuncus; par = parameres. Scale bar = 0.5 mm.

Fig. 3. Baliga asakurae (Okamoto, 1910) (NTU). A. Female terminalia, lateral view. B. Same, ventral view. C. Male terminalia, lateral view.D. Same, ventral view.Abbreviations: ag = anterior gonapophysis; ect = ectoproct; lg = lateral gonapophysis; pg = posterior gonapophysis; pp = pregenital plate; S = sternites; T = tergites. Scale bars = 1.0 mm.

Fig. 6. Baliga brunneipennis (Esben-Petersen, 1913) (NTU). A. Female terminalia, lateral view. B. Same, ventral view. C. Male terminalia, lateral view. D. Same, ventral view. Abbreviations: ag = anterior gonapophysis; ect = ectoproct; lg = lateral gonapophysis; pg = posterior gonapophysis; pp = pregenital plate; S = sternites; T = tergites. Scale bars = 1.0 mm.

Fig. 2. Baliga asakurae (Okamoto, 1910) (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings. Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA= radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 1. Adult habitus of species of Myrmeleontini Latreille, 1802 of Taiwan, lateral view. A. Baliga asakurae (Okamoto, 1910), ♀ (NTU). B. B. brunneipennis (Esben-Petersen, 1913), ♀ (NTU). C. Myrmeleon tenuipennis Rambur, 1842, ♀ (NTU). D. M. littoralis Miller & Stange, 1999, ♀ (NTU). E. M. wangi Miller & Stange, 1999, ♂ (NTU). F. M. heppneri Miller & Stange, 1999, ♂ (NTU). G. M. persimilis Miller & Stange, 1999, ♂ (NTU). H. M. punctinervis Banks, 1937, ♀ (NTU). I. M. taiwanensis Miller & Stange, 1999, ♂ (NTU). Scale bars = 10.0 mm.

Fig. 5. Baliga brunneipennis (Esben-Petersen, 1913) comb. nov. (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings. Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA = radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 11. Myrmeleon littoralis Miller & Stange, 1999 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings.Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA= radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 8. Myrmeleon tenuipennis Rambur, 1842 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings. Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA= radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 14. Myrmeleon wangi Miller & Stange, 1999 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus.C. Wings.Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA= radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 20. Myrmeleon persimilis Miller & Stange, 1999 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings. Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA = radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 26. Myrmeleon taiwanensis Miller & Stange, 1999 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings. Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA = radius anterior; RP = radius posterior; Sc = subcosta. Scale bars:A–B = 1.0 mm; C = 10.0 mm.

Fig. 17. Myrmeleon heppneri Miller & Stange, 1999 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings.Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA= radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.

Fig. 23. Myrmeleon punctinervis Banks, 1937 (NTU). A. Head, frontal view. B. Head and thorax, dorsal habitus. C. Wings. Abbreviations: A = anal veins; C = costa; Cu = cubitus; CuA = cubitus anterior; CuP = cubitus posterior; MA = media anterior; MP = media posterior; pB = posterior Banksian line; RA= radius anterior; RP = radius posterior; Sc = subcosta. Scale bars: A–B = 1.0 mm; C = 10.0 mm.