Myzininae, Ashmead, 1899

Liao, Xiang-Ping, Chen, Bin & Li, Ting-Jing, 2022, A taxonomic revision of the subfamily Myzininae from China, with a key to the Chinese species (Hymenoptera: Tiphiidae), Zootaxa 5154 (2), pp. 152-174 : 153-154

Key to all the species of the subfamily Myzininae from China (excluding the genus Mesa )

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1. CM (R 1 vein always detached from the wing border) and CSM I–III of fore wing normal, not fused together ( Fig. 1 ); pterostigma obsolete ( Fig. 1 ); T6 ( Fig. 8 ) more and less punctate....................................................... 2

- CM and CSM III of fore wing fused together into the CPM, and CSM I–II present, the second always petiolate ( Fig. 63 ); pterostigma present ( Fig. 63 ); T6 ( Fig. 68 ) quite smooth and mostly impunctate.................................... 6

2. Anterior surface of mesopleuron concave; head square ( Fig. 18 ), posterior corner more or less protruding backward.........................................................................................3 ( Hylomesa Krombein )

- Anterior surface of mesopleuron flat; head not square, posterior corner not protruding backward.............................................................................................. Mesa Saussure (see Liao et al. 2021)

3. Vertex ( Fig. 3 ) close to posterior ocelli with dense punctures and close to occipital carina with sparse punctures; dorsum of propodeum ( Fig. 6 ) largely and irregularly punctate on horizontal surface............ H. punctata Liao, Chen & Li , sp. nov.

- Vertex ( Figs 10 , 18 ) near posterior ocelli with few sparse punctures, near occipital carina mostly impunctate; dorsum of propodeum ( Fig. 12 ) largely impunctate on horizontal surface...................................................... 4

4. Head ( Fig. 25 ) wholly black; propodeum ( Fig. 31 ) with narrow median groove, base of groove almost as wide as apex..................................................................................... H. taiwana Tsuneki, 1986

- Head ( Figs 9 , 16 ) mostly red, propodeum ( Figs 12 , 22 ) with broad median groove, base of groove much wider than apex... 5

5. Ventral surface of hind femur ( Fig. 13 ) medially with long acute prominence; anterior ocellus closer to occiput than to apex of antennal tubercle ( Fig. 10 ).......................................................... H. bakeri Krombein, 1968

- Ventral surface of hind femur ( Fig. 21 ) medially with short obtuse prominence; anterior ocellus closer to apex of antennal tubercle than to occiput ( Fig. 18 )...................................................... H. longiceps ( Turner, 1918)

6. Pam and Pal always 6- and 4- segmented, respectively; ventral surface of the 2 nd fore tarsomere with row of dense short whitish bristles at apex ( Fig. 29 in Boni Bartalccui, 2004b)............................................... 7 ( Meria Illiger )

- Pam and Pal always more or less reduced; fore tibia and tarsus without dense short bristles (Fig. 284 in Boni Bartalccui, 2004b)............................................................................................. 11

7. Dorsum of propodeum largely striate laterally, medially with numerous deep punctures; lateral light spots on T2–T4 very large, the distance between two lateral spots less than the length of the spot (Fig. 127 in Boni Bartalccui, 2011a)............................................................................................ M. aurantiaca (Guérin, 1837)

- Dorsum of propodeum basally striate laterally, medially largely smooth ( Fig. 76 ); lateral light spots on T2–T4 or T2–T3 comparatively smaller ( Fig. 77 ), distance between two lateral spots more than or at least equal to the length of the spot........ 8

8. Head square, as high as wide in frontal view, elongated behind eyes....................... M. dorsalis ( Fabricius, 1804)

- Head distinctly wider than high in frontal view ( Figs 65 , 73 ), rounded behind eyes................................. 9

9. Head dark red; distance between two lateral spots on T2–T4 equal to the length of the spot................................................................................................. M. askhabadensis Radoszkowski, 1886

- Head dark brown to black; distance between two lateral spots on T2–T4 much greater than the length of the spot ( Figs 68 , 77 ) .................................................................................................. 10

10. Anterior margin of clypeus straight ( Fig. 65 ); T1 ( Fig. 68 ) subapically with a row of punctures and medially absent, forming incomplete groove................................................................ M. discussa Guiglia, 1973

- Anterior margin of clypeus rounded ( Fig. 73 ); T1 ( Fig. 77 ) subapically with a row of punctures, forming complete groove............................................................................ M. sanguinicollis Morawitz, 1893

11. Scape with a stripe of densely packed punctures bearing long setae, these setae as long as scape; T6 without subapical groove............................................................. Poecilotiphia brevicauda kaszabi ( Guiglia, 1965)

- Scape with sparser punctures, not forming a stripe, setae shorter than scape; T6 subapically with a row of punctures medially absent, forming incomplete groove......................................... Komarowia mongolina ( Guiglia, 1965)

♂♂

1. Hypostomal carina directed laterally toward outer mandibular condyle ( Fig. 27 ); length of S7 0.4–0.5× length of T7 ( Fig. 36 ) in lateral view........................................................................................ 2

- Hypostomal carina not directed laterally, still reaching inner mandibular condyle ( Fig. 74 ); length of S7 more than half of T7 ( Fig. 50 ) in lateral view................................................................................ 5

2. Hind coxa carinate along dorsal margin; T1 ( Fig. 34 ) anteriorly carinate........................3 ( Hylomesa Krombein )

- Hind coxa not carinate along dorsal margin; T1 anteriorly not carinate............... Mesa Saussure (see Liao et al. 2021)

3. Head wholly black; anterior two-thirds of pronotum ( Fig. 30 ) with transverse grooves and posterior third with a few sparse minute punctures................................................................. H. taiwana Tsuneki, 1986

- Head usually red; pronotum sparsely punctate or densely punctate in a few transverse grooves........................ 4

4. Pronotum anteriorly moderately carinate, with sparse punctures............................ H. bakeri Krombein, 1968

- Pronotum anteriorly strongly carinate, with weak to strong dense punctures in a few transverse grooves................................................................................................ H. longiceps ( Turner, 1918)

5. Inner margin of eye with deep notch ( Figs 45 , 58 ); T7 ( Fig. 49 ) with deep notch........................................................................................................................... 6 ( Meria Illiger )

- Inner margin of eye lightly bent or almost straight ( Figs 38 , 82 ), without deep notch; T7 ( Figs 43 , 85 ) with comparatively shallow notch.......................................................................................... 10

6. Pronotal transverse carina ( Fig. 53 ) anteriorly complete and not absent; lateral side of pronotum ( Fig. 54 ) antero-ventrally densely punctate, without striae; ventral surface of mid femur with sparse punctures and setae...................................................................................................... M. dorsalis ( Fabricius, 1804)

- Pronotal transverse carina anteriorly present and more or less absent ( Fig. 46 ); lateral side of pronotum ( Fig. 47 ) antero-ventrally densely strio-punctate or striate; ventral surface of mid femur smooth, without punctures nor setae................ 7

7. T3–T5 ( Fig. 48 ) wholly with dense punctures; clypeus wholly with dense punctures ( Fig. 45 ).. M. aurantiaca (Guérin, 1837)

- T3–T5 ( Fig. 69 ) basally with dense or sparse punctures, apically impunctate and smooth; clypeus with moderate to sparse punctures ( Fig. 58 ).................................................................................... 8

8. T7 ( Fig. 79 ) with dense deep punctures; tipped lobes of T7 ( Fig. 79 ) pointed............ M. sanguinicollis Morawitz, 1890

- T7 ( Fig. 62 , 70 ) with sparse shallow punctures; tipped lobes of T7 ( Fig. 62 , 70 ) rounded............................. 9

9. Dorsum of pronotum ( Figs 59 ) anteriorly with dense punctures, posteriorly with moderate punctures; T3–T5 ( Fig. 61 ) basally with large dense punctures................................................ M. askhabadensis Radoszkowski, 1886

- Dorsum of pronotum ( Fig. 67 ) wholly with sparse punctures; T3–T5 ( Fig. 69 ) basally with sparse and comparatively smaller punctures........................................................................ M. discussa Guiglia, 1973

10. Ocelli conspicuously enlarged, posterior ocelli distinctly convex in frontal view ( Fig. 38 ); frons without smooth subtriangular area ( Fig. 39 ); T7 ( Fig. 43 ) with deep punctures, apex smooth and impunctate....... Komarowia mongolina ( Guiglia, 1965)

- Ocelli normal, posterior ocelli not convex in frontal view ( Fig. 81 ); frons with smooth subtriangular area corresponding to anterior ocellus ( Fig. 82 ); lateral side of T7 ( Fig. 85 ) densely punctate, medially smooth and impunctate.............................................................................. Poecilotiphia brevicauda kaszabi ( Guiglia, 1965)

Figures

FIGURES 1–8. Hylomesa punctata sp. nov., holotype, ♀. 1. Habitus, dorsal view (CM: marginal cell; CSM I: the first sub mar- ginal cell; CSM II: the second sub marginal cell; CSM III: the third sub marginal cell); 2. Head, frontal view; 3. Vertex, dorsal view; 4. Pronotum, dorsal view; 5. Mesosoma, lateral view; 6. Propodeum, dorsal view; 7. T1, dorsal view; 8. T6, dorsal view.

FIGURES 63–70. Meria discussa, 63, 65, 68, ♀; 64, 66–67, 69–70, ♂. 63. Habitus, dorsal view (CPM: paramarginal cell; CSM I: the first sub marginal cell; CSM II: the second sub marginal cell); 64. Habitus, dorsal view; 65. Head, frontal view; 66. Pronotum, lateral view; 67. Pronotum, dorsal view; 68. Metasoma, dorsal view; 69. T3–T5, dorsal view; 70. T7, dorsal view.

FIGURES 16–24. Hylomesa longiceps, ♀. 16. Habitus, dorsal view; 17. Head, frontal view; 18. Vertex, dorsal view; 19. Prono- tum, dorsal view; 20. Pronotum, lateral view; 21. Hind femur and tibia, dorsal view; 22. Propodeum, dorsal view; 23. T1, dorsal view; 24. T6, dorsal view.

FIGURES 9–15. Hylomesa bakeri, ♀. 9. Habitus, dorsal view; 10. Vertex, dorsal view; 11. Pronotum, dorsal view; 12. Propo- deum, dorsal view; 13. Hind femur and tibia, dorsal view; 14. T1, dorsal view; 15. T6, dorsal view.

FIGURES 25–36. Hylomesa taiwana, 25, 28–29, 31, 33, 35, ♀; 26–27, 30, 32, 34, 36, ♂. 25–26. Habitus, dorsal view; 27. Head, ventral view; 28. Vertex, dorsal view; 29–30. Pronotum, dorsal view; 31–32. Propodeum, dorsal view; 33–34. T1, dorsal view; 35. T6, dorsal view; 36. T7, lateral view.

FIGURES 71–79. Meria sanguinicollis, 71, 73, 76–77, ♀; 72, 74–75, 78–79, ♂. 71–72. Habitus, dorsal view; 73. Head, frontal view; 74. Head, ventral view; 75. Pronotum, lateral view; 76. Propodeum, dorsal view; 77. Metasoma, dorsal view; 78. T3–T5, dorsal view; 79. T7, dorsal view.

FIGURES 44–50. Meria aurantiaca, ♂. 44. Habitus, dorsal view; 45. Head, frontal view; 46. Pronotum, dorsal view; 47. Pro- notum, lateral view; 48. T3–T5, dorsal view; 49. T7, dorsal view; 50. T7, lateral view.

FIGURES 57–62. Meria askhabadensis, ♂. 57. Habitus, dorsal view; 58. Head, frontal view; 59. Pronotum, dorsal view; 60. Pronotum, lateral view; 61. T3–T5, dorsal view; 62. T7, dorsal view.

FIGURES 37–43. Komarowia mongolina, ♂. 37. Habitus, dorsal view; 38. Head, frontal view; 39. Vertex, dorsal view; 40. Pronotum, dorsal view; 41. Pronotum, lateral view; 42. Propodeum, dorsal view; 43. T7, dorsal view.

FIGURES 80–85. Poecilotiphia brevicauda kaszabi, ♂. 80. Habitus, dorsal view; 81. Head, frontal view; 82. Vertex, dorsal view; 83. Pronotum, dorsal view; 84. Propodeum, dorsal view; 85. T7, dorsal view.

FIGURES 51–56. Meria dorsalis, ♂. 51. Habitus, dorsal view; 52. Vertex, dorsal view; 53. Pronotum, dorsal view; 54. Prono- tum, lateral view; 55. Propodeum, dorsal view; 56. T7, dorsal view.