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A review of Norwegian Gymnometriocnemus (Diptera, Chironomidae) including the description of two new species and a new name for Gymnometriocnemusvolitans (Goetghebuer) sensu Brundin.

Stur E, Ekrem T - Zookeys (2015)

Bottom Line: We present arguments for Chaetocladiusvolitans (Goetghebuer) comb. n. and for the use of Gymnometriocnemuskamimegavirgus for Gymnometriocnemusvolitans sensu Brundin.Two of these, Gymnometriocnemus (Gymnometriocnemus) pallidussp. n. and Gymnometriocnemus (Raphidocladius) autumnalissp. n. are regarded as new to science and diagnosed based on adult male morphology and DNA barcodes.The species Gymnometriocnemus (Gymnometriocnemus) marionensis Sæther, 1969 is re-established and a key to all Holarctic species is provided.

View Article: PubMed Central - HTML - PubMed

Affiliation: Norwegian University of Science and Technology, NTNU University Museum, Department of Natural History, NO-7491 Trondheim, Norway.

ABSTRACT
Examination of the syntypes of Metriocnemusvolitans Goetghebuer, 1940 revealed that these specimens belong to the genus Chaetocladius and are not con-specific with Gymnometriocnemusvolitans (Goetghebuer, 1940) sensu Brundin (1956) and Sæther (1983). A literature search showed that Gymnometriocnemuskamimegavirgus Sasa & Hirabayashi, 1993 fits well with the species figured and diagnosed by Brundin (1956) as well as with specimens of this species from Norway. We present arguments for Chaetocladiusvolitans (Goetghebuer) comb. n. and for the use of Gymnometriocnemuskamimegavirgus for Gymnometriocnemusvolitans sensu Brundin. In addition, we provide DNA barcode data that indicate the presence of at least seven Gymnometriocnemus species in Norway of which six are collected as male adults. Two of these, Gymnometriocnemus (Gymnometriocnemus) pallidussp. n. and Gymnometriocnemus (Raphidocladius) autumnalissp. n. are regarded as new to science and diagnosed based on adult male morphology and DNA barcodes. The species Gymnometriocnemus (Gymnometriocnemus) marionensis Sæther, 1969 is re-established and a key to all Holarctic species is provided.

No MeSH data available.


Related in: MedlinePlus

Hypopygia of Norwegian Gymnometriocnemus. AGymnometriocnemus (Gymnometriocnemus) marionensis (Finnmark06) BGymnometriocnemus (Gymnometriocnemus) pallidus sp. n. (CH-eik131) CGymnometriocnemus (Gymnometriocnemus) subnudus (ATNA398) DGymnometriocnemus (Raphidocladius) autumnalis sp. n. (Finnmark201) EGymnometriocnemus (Raphidocladius) brumalis (Finnmark75) FGymnometriocnemus (Raphidocladius) kamimegavirgus (Finnmark76). Scale bar = 50 µm. Specimen codes in parenthesis correspond to codes in BOLD and in figure 6.
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Figure 4: Hypopygia of Norwegian Gymnometriocnemus. AGymnometriocnemus (Gymnometriocnemus) marionensis (Finnmark06) BGymnometriocnemus (Gymnometriocnemus) pallidus sp. n. (CH-eik131) CGymnometriocnemus (Gymnometriocnemus) subnudus (ATNA398) DGymnometriocnemus (Raphidocladius) autumnalis sp. n. (Finnmark201) EGymnometriocnemus (Raphidocladius) brumalis (Finnmark75) FGymnometriocnemus (Raphidocladius) kamimegavirgus (Finnmark76). Scale bar = 50 µm. Specimen codes in parenthesis correspond to codes in BOLD and in figure 6.

Mentions: Only one specimen of this species from Norway has been available to us. It fits Sæther’s description of Gymnometriocnemus (Gymnometriocnemus) marionensis in having very slightly larger megasetae on the gonostyli than specimens of Gymnometriocnemus (Gymnometriocnemus) subnudus (Figs 4A, C), but this character is not trustworthy as it is dependent on the orientation of the gonostyli in the slide-mount. The larger anal point will separate Gymnometriocnemus (Gymnometriocnemus) marionensis (c. 38 µm long) from Gymnometriocnemussubnudus (c. 17 µm long). Cranston and Oliver (1988) synonymized Gymnometriocnemus (Gymnometriocnemus) marionensis with Gymnometriocnemus (Gymnometriocnemus) subnudus doubting the diagnostic value of the size of the megaseta and position of the end of R2+3 (Fig. 5A). We have not examined the types of Gymnometriocnemus (Gymnometriocnemus) marionensis, but specimens from Michigan and North Carolina (ZMBN) identified by Ole Sæther as belonging to this species. This record of the species is the first from Norway and Europe.


A review of Norwegian Gymnometriocnemus (Diptera, Chironomidae) including the description of two new species and a new name for Gymnometriocnemusvolitans (Goetghebuer) sensu Brundin.

Stur E, Ekrem T - Zookeys (2015)

Hypopygia of Norwegian Gymnometriocnemus. AGymnometriocnemus (Gymnometriocnemus) marionensis (Finnmark06) BGymnometriocnemus (Gymnometriocnemus) pallidus sp. n. (CH-eik131) CGymnometriocnemus (Gymnometriocnemus) subnudus (ATNA398) DGymnometriocnemus (Raphidocladius) autumnalis sp. n. (Finnmark201) EGymnometriocnemus (Raphidocladius) brumalis (Finnmark75) FGymnometriocnemus (Raphidocladius) kamimegavirgus (Finnmark76). Scale bar = 50 µm. Specimen codes in parenthesis correspond to codes in BOLD and in figure 6.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4492210&req=5

Figure 4: Hypopygia of Norwegian Gymnometriocnemus. AGymnometriocnemus (Gymnometriocnemus) marionensis (Finnmark06) BGymnometriocnemus (Gymnometriocnemus) pallidus sp. n. (CH-eik131) CGymnometriocnemus (Gymnometriocnemus) subnudus (ATNA398) DGymnometriocnemus (Raphidocladius) autumnalis sp. n. (Finnmark201) EGymnometriocnemus (Raphidocladius) brumalis (Finnmark75) FGymnometriocnemus (Raphidocladius) kamimegavirgus (Finnmark76). Scale bar = 50 µm. Specimen codes in parenthesis correspond to codes in BOLD and in figure 6.
Mentions: Only one specimen of this species from Norway has been available to us. It fits Sæther’s description of Gymnometriocnemus (Gymnometriocnemus) marionensis in having very slightly larger megasetae on the gonostyli than specimens of Gymnometriocnemus (Gymnometriocnemus) subnudus (Figs 4A, C), but this character is not trustworthy as it is dependent on the orientation of the gonostyli in the slide-mount. The larger anal point will separate Gymnometriocnemus (Gymnometriocnemus) marionensis (c. 38 µm long) from Gymnometriocnemussubnudus (c. 17 µm long). Cranston and Oliver (1988) synonymized Gymnometriocnemus (Gymnometriocnemus) marionensis with Gymnometriocnemus (Gymnometriocnemus) subnudus doubting the diagnostic value of the size of the megaseta and position of the end of R2+3 (Fig. 5A). We have not examined the types of Gymnometriocnemus (Gymnometriocnemus) marionensis, but specimens from Michigan and North Carolina (ZMBN) identified by Ole Sæther as belonging to this species. This record of the species is the first from Norway and Europe.

Bottom Line: We present arguments for Chaetocladiusvolitans (Goetghebuer) comb. n. and for the use of Gymnometriocnemuskamimegavirgus for Gymnometriocnemusvolitans sensu Brundin.Two of these, Gymnometriocnemus (Gymnometriocnemus) pallidussp. n. and Gymnometriocnemus (Raphidocladius) autumnalissp. n. are regarded as new to science and diagnosed based on adult male morphology and DNA barcodes.The species Gymnometriocnemus (Gymnometriocnemus) marionensis Sæther, 1969 is re-established and a key to all Holarctic species is provided.

View Article: PubMed Central - HTML - PubMed

Affiliation: Norwegian University of Science and Technology, NTNU University Museum, Department of Natural History, NO-7491 Trondheim, Norway.

ABSTRACT
Examination of the syntypes of Metriocnemusvolitans Goetghebuer, 1940 revealed that these specimens belong to the genus Chaetocladius and are not con-specific with Gymnometriocnemusvolitans (Goetghebuer, 1940) sensu Brundin (1956) and Sæther (1983). A literature search showed that Gymnometriocnemuskamimegavirgus Sasa & Hirabayashi, 1993 fits well with the species figured and diagnosed by Brundin (1956) as well as with specimens of this species from Norway. We present arguments for Chaetocladiusvolitans (Goetghebuer) comb. n. and for the use of Gymnometriocnemuskamimegavirgus for Gymnometriocnemusvolitans sensu Brundin. In addition, we provide DNA barcode data that indicate the presence of at least seven Gymnometriocnemus species in Norway of which six are collected as male adults. Two of these, Gymnometriocnemus (Gymnometriocnemus) pallidussp. n. and Gymnometriocnemus (Raphidocladius) autumnalissp. n. are regarded as new to science and diagnosed based on adult male morphology and DNA barcodes. The species Gymnometriocnemus (Gymnometriocnemus) marionensis Sæther, 1969 is re-established and a key to all Holarctic species is provided.

No MeSH data available.


Related in: MedlinePlus