Kamimuria azunensis, Sivec & Stark, 2008

Sivec, Ignac & Stark, Bill P., 2008, New Species Of Kamimuria Klapálek (Plecoptera: Perlidae) From Thailand And Vietnam, With Notes On Chinese Species, Illiesia 4 (12), pp. 110-138 : 114-115

Kamimuria azunensis sp. n.

( Figs. 13-20 , 72-73 )

Material examined. Holotype ♂ and 1 ♀ paratype from Vietnam, Gia Lai, An Khe District, Tram Lap, Azun River , 3 km NE forestry building, 21 June 1996, ROM 961076, D. Currie, J. Swann ( ROM).

Adult habitus. General color pale brown patterned with dark brown. Head pale except for dark brown ocellar triangle ( Fig. 13 ). Basal antennal segment pale, segments 2 through about 10 dark, segments 11 through about 20 alternating dark and light, rest of segments pale. Pronotum pale brown but downturned lateral edges very dark; disc with scattered slightly darker rugosities. Wing membrane pale, veins pale brown. Femora pale except for narrow apical band ( Fig. 16 ); tibiae mostly pale but with narrow basal band and small area of dark pigment at apex; tarsi pale.

Male. Forewing length 22 mm. Hemiterga relatively broad basally and narrowed to tip; inner margins with irregular row of fine spines near base ( Figs. 14- 15, 20 ). Tergum 9 with small median lobe and patch of sensilla basiconica; tergum 8 with sensilla basiconica patch extending over most of tergum length; tergum 7 with a few sensilla basiconica in a sparse mesal patch. Hair brushes on sterna 4-7. Aedeagal sac membranous, shaped somewhat like an animal’s head in lateral aspect ( Fig. 19 ); sac armature consists of minute to small spines covering most of ventral surface but reduced on dorsal surface ( Fig. 18 ); small apical area without spines and area between ear-like lobes bare in dorsal aspect.

Female. Forewing length 26 mm. Subgenital plate broadly triangular with median notch; plate extends over ca. basal third of segment 9 ( Fig. 17 ).

Egg. Inversely conical with short wide collar; sides of collar with irregularly spaced ridges; base of collar smooth. Chorion covered throughout with large pits grading into small, regularly sized pits below micropylar line; ca. 11 rows of pits above micropylar line with ca. 8 pits per row ( Figs. 72-73 ).

Larva. Unknown.

Etymology. The species name is based on the type locality.

Diagnosis. The distinctive black edges to the pronotum help in recognizing this species but the male aedeagus shape in lateral aspect and egg characters are also diagnostic. The egg is similar in general shape to that of K. turbinata but the chorionic pits are relatively smaller in that species (compare Figs. 72 and 86 ).

Figures

Figs. 13-20. Kamimuria azunensis adult structures. 13. Head and pronotum, 14. Male terminalia, 15. Male hemitergal lobe, dorsal, 16. Femur, 17. Female terminalia, 18. Aedeagus, dorsal, 19. Aedeagus, lateral, 20. Male hemitergal lobe, lateral.

Figs. 72-73. SEM micrographs of eggs of K. azunensis. 72. Collar and chorionic detail, 73. Anterior pole.

Figs. 86-87. SEM micrographs of eggs of K. turbinata. 86. Collar and chorionic detail, 87. Anterior pole.