The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Andrew Polaszek - One of the best experts on this subject based on the ideXlab platform.
-
hydrophylita lutzimicron emporos shih polaszek hymenoptera trichogrammatidae from taiwan parasitising eggs and phoretic on adults of the damselfly psolodesmus mandarinus mandarinus Zygoptera calopterygidae
PLOS ONE, 2013Co-Authors: Yuan Tung Shih, Chiun Cheng Ko, Andrew PolaszekAbstract:Hydrophylita emporos n. sp. reared from eggs of Psolodesmus mandarinus mandarinus McLachlan (Zygoptera: Calopterygidae) in Taiwan is described. This is the first species of Hydrophylita to be described from the Old World, and the first record of phoresy in the genus. Adult females were observed aggregating at the base of the female damselfly’s abdomen. When the damselfly begins ovipositing, females move to the tip of the abdomen, enter the water and quickly locate eggs for parasitising. The article contains links to video footage of this process.
-
Hydrophylita (Lutzimicron) emporos Shih & Polaszek (Hymenoptera: Trichogrammatidae) from Taiwan, Parasitising Eggs, and Phoretic on Adults, of the Damselfly Psolodesmus mandarinus mandarinus (Zygoptera: Calopterygidae)
PLOS ONE, 2013Co-Authors: Yuan Tung Shih, Chiun Cheng Ko, Andrew PolaszekAbstract:Hydrophylita emporos n. sp. reared from eggs of Psolodesmus mandarinus mandarinus McLachlan (Zygoptera: Calopterygidae) in Taiwan is described. This is the first species of Hydrophylita to be described from the Old World, and the first record of phoresy in the genus. Adult females were observed aggregating at the base of the female damselfly’s abdomen. When the damselfly begins ovipositing, females move to the tip of the abdomen, enter the water and quickly locate eggs for parasitising. The article contains links to video footage of this process.
Daran Zheng - One of the best experts on this subject based on the ideXlab platform.
-
a highly diverse coenagrionoid damselfly group odonata Zygoptera burmacoenagrionidae fam nov from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, Haichun Zhang, De Zhuo, Bo WangAbstract:The damselfly superfamily Coenagrionoidea is the largest Zygopteran group, comprising three-fifths of all extant damselfly species. The Mesozoic fossil record of this superfamily is sparse, whilst it is relatively common in Burmese amber. A new coenagrionoid family, Burmacoenagrionidae Zheng et al., fam. nov., is established here based on four new species in three new genera: Burmacoenagrion pretiosus Zheng et al. gen. et sp. nov., Burmachistigma cheni Zheng et al. gen. et sp. nov., Electrocoenagrion elongatum Zheng et al. gen. et sp. nov. and Electrocoenagrion forficatum Zheng et al. gen. et sp. nov. The previously described damselfly genus, Burmagrion Mostel et al., 2017, is transferred to this family. Burmacoenagrionidae Zheng et al. fam. nov. has a long pterostigma covering 3–5 cells, pigmented wings and a sigmoidally curved RA and RP1 distal of the pterostigma, differing from other coenagrionoid damselflies. Until now, this is the most diverse damselfly family reported from Burmese amber, showing tha...
-
mesostictinae subfam nov an archaic group of platystictid damselflies odonata Zygoptera from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Bo Wang, Haichun Zhang, Suchin ChangAbstract:Odonatans are quite rare in the fossil record compared with the other insects, especially in Cretaceous amber inclusions. The extant family Platystictidae is one of the most diverse Zygoptera, but short of fossil records. In this paper, a new species, Mesosticta davidattenboroughi sp. nov., is described from mid-Cretaceous Burmese amber, representing the third-known fossil species of Platystictidae. Mesosticta davidattenboroughi sp. nov. has a long IR1 beginning one cell distal of the base of RP2, confirming the previous attribution of Mesosticta Huang, Azar, Cai & Nel, 2015 to Platystictidae. It differs from other species of Mesosticta in having a long IR1 and a basally crossed subdiscoidal cell. The fossil genus Mesosticta shares the diagnostic characters of the modern platystictid genera, viz. a basally recessed ‘CuP’ (shared by all species), a very long IR1 (only in Mesosticta davidattenboroughi sp. nov.), and a specialized subdiscoidal area mostly rhomboidal in shape (only in Mesosticta electronica Z...
-
The second hemiphlebiid damselfly (Odonata: Zygoptera) from mid-Cretaceous Burmese amber
Alcheringa, 2018Co-Authors: Daran Zheng, Bo WangAbstract:Zheng, D. & Wang, B., November, 2018. The second hemiphlebiid damselfly (Odonata: Zygoptera) from mid-Cretaceous Burmese amber. Alcheringa 43, 257–260. ISSN 0311-5518.Burmahemiphlebia zhangi Zheng et al., 2017 is the dominant damselfly found in Burmese amber. Here, a new hemiphlebiid damselfly, Burmahemiphlebia hui sp. nov., is described representing the second Burmahemiphlebia species discovered in Burmese amber. Burmahemiphlebia hui sp. nov. differs from Burmahemiphlebia zhangi in having more postnodal cross-veins, CuP and the separating point of AA from AP basal of A × 1, Arc aligned with A × 2, RP2 base closer to N than to Pt, and IR1 five cells distal of RP2 base. The new damselfly is extremely rare and the only one known from Burmese amber, unlike Burmahemiphlebia zhangi.Daran Zheng* [dranzheng@gmail.com], Bo Wang† [bowang@nigpas.ac.cn] State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chines...
-
the second mesomegaloprepid damselfly odonata Zygoptera from mid cretaceous burmese amber
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Zhicheng Zhou, Suchin Chang, Bo WangAbstract:Abstract The mesomegaloprepids are some of the most abundant fossil damselflies in mid-Cretaceous Burmese amber characterized by large size, brown colour and dense wing venation. Here we described a new damselfly, Cretamegaloprepus zhouae Zheng, Nel and Wang, gen. et sp. nov., representing the second known genus and species of Mesomegaloprepidae Huang et al. (2017). Cretamegaloprepus Zheng, Nel and Wang, gen. nov. greatly differs from Mesomegaloprepus Huang et al. (2017) in having no secondary antenodal and antesubnodal crossveins, the Arc being aligned with Ax2, free discoidal and subdiscoidal cells, base of IR2 being very far distal of Sn, shorter CuA ending on posterior wing margin before RP2 base, and a net of irregular cells near base of RP2. The diagnostic characters of Mesomegaloprepidae and Mesomegaloprepus are revised based on the new damselfly.
-
paracoryphagrionidae fam nov a pseudostigmatoid damselfly from mid cretaceous burmese amber showing regular series of triangular cells odonata Zygoptera coenagrionida
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, De Zhuo, Bo WangAbstract:Abstract Paracoryphagrionidae Zheng, Nel and Wang fam. nov., a new damselfly family based on the genus and species Paracoryphagrion deltoides Zheng, Nel and Wang gen. et sp. nov., is described from Burmese amber. Paracoryphagrionidae is attributed to the clade Pseudostigmatoidea, due to the presence of an extremely long, less zigzagged vein CuA covering numerous cells, reaching the pterostigmal level, and being parallel with the hindwing margin; plus numerous trigonal cells, all shared with Coryphagrion grandis Morton, 1924 of this clade. Paracoryphagrionidae differ from other pseudostigmatoid families in the absence of the kink of RP1 at the pterostigmal brace, a very long sclerotized pterostigma, only one row of cells in the poststigmal area between the costal margin and RA, and no sigmoidally curved RA and RP1 at the wing apex. Paracoryphagrion deltoides is unique within Zygoptera due to the presence of a very elongate pterostigma and many triangular cells in the postsubnodal area.
Bo Wang - One of the best experts on this subject based on the ideXlab platform.
-
a highly diverse coenagrionoid damselfly group odonata Zygoptera burmacoenagrionidae fam nov from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, Haichun Zhang, De Zhuo, Bo WangAbstract:The damselfly superfamily Coenagrionoidea is the largest Zygopteran group, comprising three-fifths of all extant damselfly species. The Mesozoic fossil record of this superfamily is sparse, whilst it is relatively common in Burmese amber. A new coenagrionoid family, Burmacoenagrionidae Zheng et al., fam. nov., is established here based on four new species in three new genera: Burmacoenagrion pretiosus Zheng et al. gen. et sp. nov., Burmachistigma cheni Zheng et al. gen. et sp. nov., Electrocoenagrion elongatum Zheng et al. gen. et sp. nov. and Electrocoenagrion forficatum Zheng et al. gen. et sp. nov. The previously described damselfly genus, Burmagrion Mostel et al., 2017, is transferred to this family. Burmacoenagrionidae Zheng et al. fam. nov. has a long pterostigma covering 3–5 cells, pigmented wings and a sigmoidally curved RA and RP1 distal of the pterostigma, differing from other coenagrionoid damselflies. Until now, this is the most diverse damselfly family reported from Burmese amber, showing tha...
-
mesostictinae subfam nov an archaic group of platystictid damselflies odonata Zygoptera from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Bo Wang, Haichun Zhang, Suchin ChangAbstract:Odonatans are quite rare in the fossil record compared with the other insects, especially in Cretaceous amber inclusions. The extant family Platystictidae is one of the most diverse Zygoptera, but short of fossil records. In this paper, a new species, Mesosticta davidattenboroughi sp. nov., is described from mid-Cretaceous Burmese amber, representing the third-known fossil species of Platystictidae. Mesosticta davidattenboroughi sp. nov. has a long IR1 beginning one cell distal of the base of RP2, confirming the previous attribution of Mesosticta Huang, Azar, Cai & Nel, 2015 to Platystictidae. It differs from other species of Mesosticta in having a long IR1 and a basally crossed subdiscoidal cell. The fossil genus Mesosticta shares the diagnostic characters of the modern platystictid genera, viz. a basally recessed ‘CuP’ (shared by all species), a very long IR1 (only in Mesosticta davidattenboroughi sp. nov.), and a specialized subdiscoidal area mostly rhomboidal in shape (only in Mesosticta electronica Z...
-
The second hemiphlebiid damselfly (Odonata: Zygoptera) from mid-Cretaceous Burmese amber
Alcheringa, 2018Co-Authors: Daran Zheng, Bo WangAbstract:Zheng, D. & Wang, B., November, 2018. The second hemiphlebiid damselfly (Odonata: Zygoptera) from mid-Cretaceous Burmese amber. Alcheringa 43, 257–260. ISSN 0311-5518.Burmahemiphlebia zhangi Zheng et al., 2017 is the dominant damselfly found in Burmese amber. Here, a new hemiphlebiid damselfly, Burmahemiphlebia hui sp. nov., is described representing the second Burmahemiphlebia species discovered in Burmese amber. Burmahemiphlebia hui sp. nov. differs from Burmahemiphlebia zhangi in having more postnodal cross-veins, CuP and the separating point of AA from AP basal of A × 1, Arc aligned with A × 2, RP2 base closer to N than to Pt, and IR1 five cells distal of RP2 base. The new damselfly is extremely rare and the only one known from Burmese amber, unlike Burmahemiphlebia zhangi.Daran Zheng* [dranzheng@gmail.com], Bo Wang† [bowang@nigpas.ac.cn] State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chines...
-
the second mesomegaloprepid damselfly odonata Zygoptera from mid cretaceous burmese amber
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Zhicheng Zhou, Suchin Chang, Bo WangAbstract:Abstract The mesomegaloprepids are some of the most abundant fossil damselflies in mid-Cretaceous Burmese amber characterized by large size, brown colour and dense wing venation. Here we described a new damselfly, Cretamegaloprepus zhouae Zheng, Nel and Wang, gen. et sp. nov., representing the second known genus and species of Mesomegaloprepidae Huang et al. (2017). Cretamegaloprepus Zheng, Nel and Wang, gen. nov. greatly differs from Mesomegaloprepus Huang et al. (2017) in having no secondary antenodal and antesubnodal crossveins, the Arc being aligned with Ax2, free discoidal and subdiscoidal cells, base of IR2 being very far distal of Sn, shorter CuA ending on posterior wing margin before RP2 base, and a net of irregular cells near base of RP2. The diagnostic characters of Mesomegaloprepidae and Mesomegaloprepus are revised based on the new damselfly.
-
paracoryphagrionidae fam nov a pseudostigmatoid damselfly from mid cretaceous burmese amber showing regular series of triangular cells odonata Zygoptera coenagrionida
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, De Zhuo, Bo WangAbstract:Abstract Paracoryphagrionidae Zheng, Nel and Wang fam. nov., a new damselfly family based on the genus and species Paracoryphagrion deltoides Zheng, Nel and Wang gen. et sp. nov., is described from Burmese amber. Paracoryphagrionidae is attributed to the clade Pseudostigmatoidea, due to the presence of an extremely long, less zigzagged vein CuA covering numerous cells, reaching the pterostigmal level, and being parallel with the hindwing margin; plus numerous trigonal cells, all shared with Coryphagrion grandis Morton, 1924 of this clade. Paracoryphagrionidae differ from other pseudostigmatoid families in the absence of the kink of RP1 at the pterostigmal brace, a very long sclerotized pterostigma, only one row of cells in the poststigmal area between the costal margin and RA, and no sigmoidally curved RA and RP1 at the wing apex. Paracoryphagrion deltoides is unique within Zygoptera due to the presence of a very elongate pterostigma and many triangular cells in the postsubnodal area.
Suchin Chang - One of the best experts on this subject based on the ideXlab platform.
-
a highly diverse coenagrionoid damselfly group odonata Zygoptera burmacoenagrionidae fam nov from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, Haichun Zhang, De Zhuo, Bo WangAbstract:The damselfly superfamily Coenagrionoidea is the largest Zygopteran group, comprising three-fifths of all extant damselfly species. The Mesozoic fossil record of this superfamily is sparse, whilst it is relatively common in Burmese amber. A new coenagrionoid family, Burmacoenagrionidae Zheng et al., fam. nov., is established here based on four new species in three new genera: Burmacoenagrion pretiosus Zheng et al. gen. et sp. nov., Burmachistigma cheni Zheng et al. gen. et sp. nov., Electrocoenagrion elongatum Zheng et al. gen. et sp. nov. and Electrocoenagrion forficatum Zheng et al. gen. et sp. nov. The previously described damselfly genus, Burmagrion Mostel et al., 2017, is transferred to this family. Burmacoenagrionidae Zheng et al. fam. nov. has a long pterostigma covering 3–5 cells, pigmented wings and a sigmoidally curved RA and RP1 distal of the pterostigma, differing from other coenagrionoid damselflies. Until now, this is the most diverse damselfly family reported from Burmese amber, showing tha...
-
mesostictinae subfam nov an archaic group of platystictid damselflies odonata Zygoptera from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Bo Wang, Haichun Zhang, Suchin ChangAbstract:Odonatans are quite rare in the fossil record compared with the other insects, especially in Cretaceous amber inclusions. The extant family Platystictidae is one of the most diverse Zygoptera, but short of fossil records. In this paper, a new species, Mesosticta davidattenboroughi sp. nov., is described from mid-Cretaceous Burmese amber, representing the third-known fossil species of Platystictidae. Mesosticta davidattenboroughi sp. nov. has a long IR1 beginning one cell distal of the base of RP2, confirming the previous attribution of Mesosticta Huang, Azar, Cai & Nel, 2015 to Platystictidae. It differs from other species of Mesosticta in having a long IR1 and a basally crossed subdiscoidal cell. The fossil genus Mesosticta shares the diagnostic characters of the modern platystictid genera, viz. a basally recessed ‘CuP’ (shared by all species), a very long IR1 (only in Mesosticta davidattenboroughi sp. nov.), and a specialized subdiscoidal area mostly rhomboidal in shape (only in Mesosticta electronica Z...
-
the second mesomegaloprepid damselfly odonata Zygoptera from mid cretaceous burmese amber
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Zhicheng Zhou, Suchin Chang, Bo WangAbstract:Abstract The mesomegaloprepids are some of the most abundant fossil damselflies in mid-Cretaceous Burmese amber characterized by large size, brown colour and dense wing venation. Here we described a new damselfly, Cretamegaloprepus zhouae Zheng, Nel and Wang, gen. et sp. nov., representing the second known genus and species of Mesomegaloprepidae Huang et al. (2017). Cretamegaloprepus Zheng, Nel and Wang, gen. nov. greatly differs from Mesomegaloprepus Huang et al. (2017) in having no secondary antenodal and antesubnodal crossveins, the Arc being aligned with Ax2, free discoidal and subdiscoidal cells, base of IR2 being very far distal of Sn, shorter CuA ending on posterior wing margin before RP2 base, and a net of irregular cells near base of RP2. The diagnostic characters of Mesomegaloprepidae and Mesomegaloprepus are revised based on the new damselfly.
-
paracoryphagrionidae fam nov a pseudostigmatoid damselfly from mid cretaceous burmese amber showing regular series of triangular cells odonata Zygoptera coenagrionida
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, De Zhuo, Bo WangAbstract:Abstract Paracoryphagrionidae Zheng, Nel and Wang fam. nov., a new damselfly family based on the genus and species Paracoryphagrion deltoides Zheng, Nel and Wang gen. et sp. nov., is described from Burmese amber. Paracoryphagrionidae is attributed to the clade Pseudostigmatoidea, due to the presence of an extremely long, less zigzagged vein CuA covering numerous cells, reaching the pterostigmal level, and being parallel with the hindwing margin; plus numerous trigonal cells, all shared with Coryphagrion grandis Morton, 1924 of this clade. Paracoryphagrionidae differ from other pseudostigmatoid families in the absence of the kink of RP1 at the pterostigmal brace, a very long sclerotized pterostigma, only one row of cells in the poststigmal area between the costal margin and RA, and no sigmoidally curved RA and RP1 at the wing apex. Paracoryphagrion deltoides is unique within Zygoptera due to the presence of a very elongate pterostigma and many triangular cells in the postsubnodal area.
-
new damselflies odonata Zygoptera hemiphlebiidae dysagrionidae from mid cretaceous burmese amber
Alcheringa, 2017Co-Authors: Daran Zheng, Qingqing Zhang, Edmund A Jarzembowski, Zhicheng Zhou, Suchin Chang, Bo WangAbstract:Zheng, D., Zhang, Q., Nel, A., Jarzembowski, E.A., Zhou, Z., Chang, S.-C. & Wang, B., May 2016. New damselflies (Odonata: Zygoptera: Hemiphlebiidae, Dysagrionidae) from mid-Cretaceous Burmese amber. Alcheringa XX, xxx–xxx. ISSN 0311-5518Two damselflies, Burmahemiphlebia zhangi gen. et sp. nov. and Palaeodysagrion cretacicus gen. et sp. nov., are described from the mid-Cretaceous Burmese amber. Burmahemiphlebia zhangi is the first record of Hemiphlebiidae from this amber, although the family was cosmopolitan during the Mesozoic. It can be readily distinguished from all other members of Hemiphlebiidae in having very short MP and CuA veins, and in its rectangular discoidal cell. The new fossils support the view that hemiphlebiid damselflies were one of the dominant groups of Zygoptera during the Mesozoic. Palaeodysagrion cretacicus is the first dysagrionid damselfly from Burmese amber and the second Mesozoic representative of this predominantly Paleogene group. It differs from other members of Dysagrionidae ...
Edmund A Jarzembowski - One of the best experts on this subject based on the ideXlab platform.
-
a highly diverse coenagrionoid damselfly group odonata Zygoptera burmacoenagrionidae fam nov from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, Haichun Zhang, De Zhuo, Bo WangAbstract:The damselfly superfamily Coenagrionoidea is the largest Zygopteran group, comprising three-fifths of all extant damselfly species. The Mesozoic fossil record of this superfamily is sparse, whilst it is relatively common in Burmese amber. A new coenagrionoid family, Burmacoenagrionidae Zheng et al., fam. nov., is established here based on four new species in three new genera: Burmacoenagrion pretiosus Zheng et al. gen. et sp. nov., Burmachistigma cheni Zheng et al. gen. et sp. nov., Electrocoenagrion elongatum Zheng et al. gen. et sp. nov. and Electrocoenagrion forficatum Zheng et al. gen. et sp. nov. The previously described damselfly genus, Burmagrion Mostel et al., 2017, is transferred to this family. Burmacoenagrionidae Zheng et al. fam. nov. has a long pterostigma covering 3–5 cells, pigmented wings and a sigmoidally curved RA and RP1 distal of the pterostigma, differing from other coenagrionoid damselflies. Until now, this is the most diverse damselfly family reported from Burmese amber, showing tha...
-
mesostictinae subfam nov an archaic group of platystictid damselflies odonata Zygoptera from mid cretaceous burmese amber
Journal of Systematic Palaeontology, 2019Co-Authors: Daran Zheng, Edmund A Jarzembowski, Bo Wang, Haichun Zhang, Suchin ChangAbstract:Odonatans are quite rare in the fossil record compared with the other insects, especially in Cretaceous amber inclusions. The extant family Platystictidae is one of the most diverse Zygoptera, but short of fossil records. In this paper, a new species, Mesosticta davidattenboroughi sp. nov., is described from mid-Cretaceous Burmese amber, representing the third-known fossil species of Platystictidae. Mesosticta davidattenboroughi sp. nov. has a long IR1 beginning one cell distal of the base of RP2, confirming the previous attribution of Mesosticta Huang, Azar, Cai & Nel, 2015 to Platystictidae. It differs from other species of Mesosticta in having a long IR1 and a basally crossed subdiscoidal cell. The fossil genus Mesosticta shares the diagnostic characters of the modern platystictid genera, viz. a basally recessed ‘CuP’ (shared by all species), a very long IR1 (only in Mesosticta davidattenboroughi sp. nov.), and a specialized subdiscoidal area mostly rhomboidal in shape (only in Mesosticta electronica Z...
-
the second mesomegaloprepid damselfly odonata Zygoptera from mid cretaceous burmese amber
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Zhicheng Zhou, Suchin Chang, Bo WangAbstract:Abstract The mesomegaloprepids are some of the most abundant fossil damselflies in mid-Cretaceous Burmese amber characterized by large size, brown colour and dense wing venation. Here we described a new damselfly, Cretamegaloprepus zhouae Zheng, Nel and Wang, gen. et sp. nov., representing the second known genus and species of Mesomegaloprepidae Huang et al. (2017). Cretamegaloprepus Zheng, Nel and Wang, gen. nov. greatly differs from Mesomegaloprepus Huang et al. (2017) in having no secondary antenodal and antesubnodal crossveins, the Arc being aligned with Ax2, free discoidal and subdiscoidal cells, base of IR2 being very far distal of Sn, shorter CuA ending on posterior wing margin before RP2 base, and a net of irregular cells near base of RP2. The diagnostic characters of Mesomegaloprepidae and Mesomegaloprepus are revised based on the new damselfly.
-
paracoryphagrionidae fam nov a pseudostigmatoid damselfly from mid cretaceous burmese amber showing regular series of triangular cells odonata Zygoptera coenagrionida
Cretaceous Research, 2018Co-Authors: Daran Zheng, Edmund A Jarzembowski, Suchin Chang, De Zhuo, Bo WangAbstract:Abstract Paracoryphagrionidae Zheng, Nel and Wang fam. nov., a new damselfly family based on the genus and species Paracoryphagrion deltoides Zheng, Nel and Wang gen. et sp. nov., is described from Burmese amber. Paracoryphagrionidae is attributed to the clade Pseudostigmatoidea, due to the presence of an extremely long, less zigzagged vein CuA covering numerous cells, reaching the pterostigmal level, and being parallel with the hindwing margin; plus numerous trigonal cells, all shared with Coryphagrion grandis Morton, 1924 of this clade. Paracoryphagrionidae differ from other pseudostigmatoid families in the absence of the kink of RP1 at the pterostigmal brace, a very long sclerotized pterostigma, only one row of cells in the poststigmal area between the costal margin and RA, and no sigmoidally curved RA and RP1 at the wing apex. Paracoryphagrion deltoides is unique within Zygoptera due to the presence of a very elongate pterostigma and many triangular cells in the postsubnodal area.
-
new damselflies odonata Zygoptera hemiphlebiidae dysagrionidae from mid cretaceous burmese amber
Alcheringa, 2017Co-Authors: Daran Zheng, Qingqing Zhang, Edmund A Jarzembowski, Zhicheng Zhou, Suchin Chang, Bo WangAbstract:Zheng, D., Zhang, Q., Nel, A., Jarzembowski, E.A., Zhou, Z., Chang, S.-C. & Wang, B., May 2016. New damselflies (Odonata: Zygoptera: Hemiphlebiidae, Dysagrionidae) from mid-Cretaceous Burmese amber. Alcheringa XX, xxx–xxx. ISSN 0311-5518Two damselflies, Burmahemiphlebia zhangi gen. et sp. nov. and Palaeodysagrion cretacicus gen. et sp. nov., are described from the mid-Cretaceous Burmese amber. Burmahemiphlebia zhangi is the first record of Hemiphlebiidae from this amber, although the family was cosmopolitan during the Mesozoic. It can be readily distinguished from all other members of Hemiphlebiidae in having very short MP and CuA veins, and in its rectangular discoidal cell. The new fossils support the view that hemiphlebiid damselflies were one of the dominant groups of Zygoptera during the Mesozoic. Palaeodysagrion cretacicus is the first dysagrionid damselfly from Burmese amber and the second Mesozoic representative of this predominantly Paleogene group. It differs from other members of Dysagrionidae ...
