Corresponding author: Qiu-Lei Men (
Academic editor: J. Salmela
Species of
Xue G-X, Men Q-L (2016) New species of subgenus
This subgenus is characterized by the following characters: male with antennae very long, slightly shorter, equal to or longer than body length, female with antennae relatively short, not beyond half length of body, flagellomere covered with six or seven long strong verticils; wing with squama naked, outer wing veins scattered with small, abundant macrotrichia, R1+2 entire, Rs longer than m-cu; ninth tergite and sternite fused, median region of sternite extensive, more or less protrudent, forming amembranous extension; inner and outer gonostylus irregularly varied in shape. The species of subgenus
A previously unknown taxon of
The genital segments of the specimens were soaked in 10% NaOH overnight and observed or drawn in glycerine using a Leica MZ125 (Leica, Germany) stereomicroscope. The genital segments were then preserved in glycerine in 0.20 ml centrifuge tubes. Photographs of partial body of male were taken by Canon 5D Mark II digital single lens reflex camera (Canon, Japan) with MP-E 65mm f/2.8 1-5X macro lens (Canon, Japan). All measurements are in millimeters (mm), made with the aid of a digital caliper. The terminology and methods of description and illustration follow those of
The key was principally constructed from descriptions in the literature without examination of the type species of most of these species, and should be considered preliminary. The characters used in the key rely primarily on the structures of genitalia and the length of antenna of male specimens.
Generally orange-yellow in coloration; antenna distinctly longer than body; prescutum orange-yellow with three light brown stripes, sometimes not clear; wings pale brown with a dark brown stigma; abdomen orange with segments six and seven black; hypopygium orange, tergite nine divided by a V-shaped notch, produced into a pair of ear-like processes, sometimes terminated into spinous point, ventral-lateral portions of tergite nine projected into two lobes, densely covered with black setae.
Male. Length:
China (Fujian, NW. Guangxi, SE. Guizhou).
In the original description of
Three types of semen pumps were defined by
Generally straw-yellow; prescutum straw-yellow with three light brown stripes; wings pale brown with a dark brown stigma; abdomen bright yellow on basal three segments, gradually changed to light brown on apical ones, segments six and seven suffused with black; hypopygium straw-yellow, tergite nine rounded at posterior margin and equipped with two finger-like processes, ventral-lateral portions of tergite nine projected into two lobes, densely covered with black setae.
Male. Length:
We compared the new species with all known species based on published descriptions and illustrations, and found that it is mostly similar to
The specific epithet is a noun derived from the Latin ‘
China (NW. Guangxi).
1 | Hind margin of ninth tergite rounded apically with a pair of finger-like processes (see Figs |
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– | Hind margin of ninth tergite without such process |
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2 | Outer gonostylus with an appressed pubescence on outer surface of apical arm (see |
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– | Outer gonostylus without such pubescence |
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3 | Ninth tergite laterally bearing two spinous projections, lower to them submedially with two short spiculose projections (see Joseph, 1974: 277, figs 137–142) | |
– | Ninth tergite not as above |
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4 | Antenna slightly shorter than body |
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– | Antenna equal to or longer than body |
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5 | Outer gonostylus club-shaped (see Alexander, 1953: 348, fig. 12d) | |
– | Outer gonostylus long-attenuate (see |
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6 | Ninth tergite produced into a rounded apex, with numerous black setae (see |
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– | Ninth tergite not produced into a rounded apex |
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7 | Ninth tergite with powerful lateral arms that are tipped with abundant blackened pegs (see |
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– | Ninth tergite without such pegs |
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8 | Median lobe of ninth sternite bearing terminal brush-like setae (see |
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– | Median lobe of ninth sternite without such brush-like setae (see |
Geographic distribution of
We wish to express sincere thanks to Dr. Pjotr Oosterbroek, University of Amsterdam, Amsterdam, the Netherlands, for his help with literature and for his valuable web site, the Catalogue of the Craneflies of the World (