Baissopteridae, Martynova, 1961

Lu, Xiumei, Zhang, Weiwei, Wang, Bo, Engel, Michael S. & Liu, Xingyue, 2020, A new and diverse paleofauna of the extinct snakefly family Baissopteridae from the mid-Cretaceous of Myanmar (Raphidioptera), Organisms Diversity & Evolution (New York, N. Y.) 20 (4), pp. 565-595 : 588-589

Key to genera of Baissopteridae

1 Hind wing with stem of MA short, crossvein-like ( Makarkin and Archibald 2014: Fig. 4 ); recorded from Late Eocene……………........ Dictyoraphidia Handlirsch

– Hind wing with stem of MA long, slightly sinuate; recorded from Cretaceous…......…….……................2

2. Head with enlarged compound eyes and greatly shortened vertex ( Fig. 14a, b )………...... Stenobaissoptera gen. nov. – Head with normal-sized compound eyes and well-developed vertex……………………….……................3

3. Hind wing doi 1 with a crossvein directed toward or connecting to stem of MA……………….…..................4

– Hind wing doi 1 without any crossvein directed toward or connecting to stem of MA………….…..........................6

4. Large body size, with forewing 17.5 mm long; forewing RP with five branches; forewing MA separating from MP at initial branching point of MP ( Willmann 1994: Fig. 6d )……………………………….. Lugala Willmann

– Small body size, with forewing 5.5–7.0 mm long; forewing RP with only two branches; forewing MA separating from MP obviously distad initial branching point of MP…………..…………..…………..…………..…….5

5. RP branches nearly one-half length of MA branches in both fore- and hind wings ( Fig. 12a, b )....... Allobaissoptera gen. nov.

– RP branches almost as long as MA branches in both fore- and hind wings ( Fig. 12c–e )..... Electrobaissoptera gen. nov.

6. Forewing MP with stem longer than doi 1 and diverging with CuA at angle ~ 30° ( Willmann 1994: Fig. 6l )...........7

– Forewing MP with stem shorter than doi 1 and diverging with CuA at angle ~ 40–60° ( Fig. 3 )…..…......................8

7. Forewing RP and MA with fewer branches and crossveins ( Ponomarenko 1988: Fig. 6 )…... Cretoraphidiopsis Engel

– Forewing RP and MA with rich branches and crossveins ( Ponomarenko 1993: Fig. 7 )......... Cretoraphidia Ponomarenko

8. Pterostigma apparently elongate and proximally diffuse ( Figs. 8a, d and 9a, b ); origin of hind wing 1mp-cua close to diverging point between R and M ( Fig. 9b )....………..... Burmobaissoptera gen. nov.

9 Pterostigma relatively short, proximally closed by a crossvein; origin of hind wing 1mp-cua distinctly shifted distad……………………………….............................10

10 Large body size, with forewing 10.5–27.7 mm ……....12

– Small body size, with forewing 8.7–10.8 mm …...........11

11. Forewing MA separating from MP obviously distad ini- t i al b r a nc h i n g p o i n t o f M P (W i l l m a n n 1 9 94: Fig. 6e )...………………........ Austroraphidia Willmann

– Forewing MA separating from MP at initial b r a n c h i n g p o i n t o f M P (L y u e t a l. 2 0 1 7 a: Fig. 8 )................ Microbaissoptera Lyu, Ren & Liu

1 2. H e a d a b o u t 3. 0 × a s l o n g a s w i d e ( Fig. 13a, b )............................. Rhynchobaissoptera gen. nov.

– H e a d a b o u t 1. 5 – 2. 0 × a s l o n g a s w i d e ( Fig. 2a, b )………..…................. Baissoptera Martynova

Figures

Fig. 4 Baissoptera monopoda sp. nov., holotype: NIGP163571. a Habitus, lateral view. b Foreleg. c Pretarsus of foreleg. d Pterostigma of fore- and hind wings. Scale bar = 1.0 mm (a, b, d); 0.25 mm (c)

Fig. 14 Stenobaissoptera xiai gen. et sp. nov., holotype: LPAM BA-17004. a Habitus, lateral view. b Head and prothorax, dorsolateral view. c Left wings. d Tarsus and pretarsus of foreleg. e Male genitalia, lateral view. f Drawing of male genitalia, lateral view. Scale bar = 1.0 mm (a–c, e– f); 0.1 mm (d)

Fig. 6 Baissoptera wangi sp. nov., holotype: CAU-BA-WN- 20001. a Habitus, ventral view. b Head and prothorax, ventral view. c Hind leg. d Pterostigma of right wings. e Left forewing. f Right forewing. g Male genitalia, lateral view. h Drawing of male genitalia, lateral view. Scale bar = 1.0 mm (a, b, d, g, h); 0.5 mm (e, f); 0.25 mm (c)

Fig. 12 Wing venations of Baissopteridae. a–c Allobaissoptera oligophlebia gen. et sp. nov., holotype: NIGP163572. a Left forewing. b Right forewing. c Right hind wing. d, e Electrobaissoptera burmanica

Fig. 3 Wing venations of Baissopteridae. a, b Baissoptera burmana sp. nov., holotype: CAU-BA-XF-20001. a Left forewing. b Left hind wing. c, d Baissoptera maculata sp. nov., holotype: NIGP163570. c Left forewing. d Left hind wing. Scale bar = 1.0 mm

Fig. 7 Wing venations of Baissopteridae. a, b Baissoptera monopoda sp. nov., holotype: NIGP163571. a Forewing. b Hind wing. c, d Baissoptera pankowskiorum sp. nov., holotype: SEMC F000385 (Bu- 131). c Forewing. d Hind wing. e, f Baissoptera wangi sp. nov., holotype: CAU-BA-WN-20001. e Left forewing. f Left hind wing. Scale bar = 2.0 mm

Fig. 8 Burmobaissoptera jiaxiaoae gen. et sp. nov., holotype: CAM BA-0016. a Habitus, dorsal view. b Head and prothorax, dorsal view. c Tarsus and pretarsus of hind leg. d Right wings. Scale bar = 1.0 mm

Fig. 9 Burmobaissoptera jiaxiaoae gen. et sp. nov., holotype: CAM BA-0016. a Right forewing. b Right hind wing. c Female genitalia, ventrolateral view. d Drawing of female genitalia, ventrolateral view. e Female genitalia, dorsolateral view. f Drawing of female genitalia, dorsolateral view. Scale bar = 1.0 mm

Fig. 13 Rhynchobaissoptera hui sp. nov., holotype: CAU-BA-HZ- 20001. a Habitus, dorsolateral view. b Head and prothorax, dorsolateral view. c Tarsus and pretarsus of foreleg. d Pterostigma of right hind wing. e Left forewing. f Male genitalia, lateral view. g Drawing of male genitalia, lateral view. Scale bar = 1.0 mm

Fig. 2 Baissoptera maculata sp. nov., holotype: NIGP163570. a Habitus, ventral view. b Head and prothorax, dorsal view. c Pterostigma of left wings. d Tarsus and pretarsus of hind leg. e Male genitalia, ventral view. f Drawing of male genitalia, lateral view. g Drawing of male genitalia, ventral view. Scale bar = 1.0 mm (a, b, e–g); 2.0 mm (c); 0.25 mm (d)