NO. 3562 MALAYAN FLIES—STEYSKAL Pi 
Entom. Berlin-Dahlem, vol. 8, p. 21.—Frey, 1964, Notulae Ent., vol. 44, 
pod. 
Stenopterella Malloch, 1931, Proc. U.S. Nat. Mus., vol. 78, no. 15, pp. 13, 16. 
Enderlein designated Plagiostenopterina trivittata (Walker) as type 
of Meringomeria, although he also included P. aenea (Wiedemann), 
which is the type of Plagiostenopterina. Malloch cited P. trivittata 
also as the type of Stenopterella, distinguishing it from other segregates 
of Plagiostenopterina in a key and included therewith also P. marginata 
(Wulp) and a new species, P. trivittigera Malloch. Hennig and Frey 
have indicated the synonymy of Stenopterella. The nature of the 
“spiracles” of the 4th and 5th tergites of the female, well within the 
sclerotic margins, would seem doubtful, but a macerated specimen of 
P. trivittata does indeed show large ramose tracheae connected with 
them. I prefer to maintain Meringomeria as a subgenus and offer 
the following key to include all of the species that can be brought into 
it at this time, although information on the position of spiracles of 
the ultimate preabdominal segments is not available for P. newrostigma 
Bezzi, P. pallidipes Frey, and P. olivacea Hendel. 
Key to Species of Plagiostenopterina Subgenus Meringomeria 
1 (2). Wing with cloud about tp and isolated spot anterad thereof dark brown; 
costal cell hyaline. . . .... 2.2... .. P. neurostigma Bezzi 
2 (1). Wing without such markings. 
3 (8). Mesonotum lightly clayey-yellow pruinose without shining longi- 
tudinal vittae. 
4 (5). Cx and f dark brown; 9: spiracles of 5th tergite far mesad of lateral 
margins, but somewhat closer thereto than to each other and near 
posterior margin. . . 1 es oy OP. marginata’: (Wulp) 
5 (4). Femora nearly wholly gelicws 
6 (7). Mesonotum with distinct blackish de lines interrupted at suture; 
abdomen wholly greenish. . . . ... =... P. olivacea Hendel 
7 (6). Mesonotum without such lines, with only faint traces of brownish dc 
lines; abdomen with yellowish transverse bands; 9: spiracles of 5th 
tergite close to lateral margins. . . . P. leytensis, new species 
8 (3). Mesonotum with pair of longitudinal shining stripes. 
9 (10). Pruinosity of mesonotum whitish, rather light; cr and f blackish; 9: 
spiracles of 5th tergite distant from lateral margins, twice as far from 
each other as from posterior margin. . . P. planidorsum (Walker) 
10 (9). Pruinosity of mesonotum yellowish, heavy; at least f, largely yellowish. 
11 (14). Costal cell hyaline. 
12 (13). Base of abdomen wholly greenish; costal wing margin from stigma to 
end of 4th vein with continuous brown seam; 9: spiracles of 5th 
PETOITEL es) hal ots . .. .. P. pallidipes Frey 
13 (12). Base of abdomen seiewiatns wings swith apical spot isolated from dark 
brown stigma by hyaline space; ?: spiracles of 5th tergite only their 
diameter from each other and from posterior margin. 
P. hebes Hendel 
