922 CHARLES PauLt ALEXANDER 
Eriocera is one of the larger genera of crane-flies, including about one 
hundred described species which are most numerous in the tropics of 
both hemispheres. The larvae are carnivorous. They live in streams, 
and pupate in sand or gravel (Alexander and Lloyd, 1914). The habits 
of the common local species EH. longicornis have been described by the 
author in another paper (Alexander, 1915 a:149-152). The following key 
divides the local species of Eriocera: 
if.) Gell Mi present int ekceoe ct ate als ocak ee ae Bees 5 Se eee 2 
Cell: Ma lacking: een.) gs eee essen wie ee Slee ee 3 
2. Antennae of male greatly elongated, more than twice the length of the whole body; wings 
grayish brown; vertical tubercle prominent, brownish on the sides. [Arrhenica spinosa 
OSs. Proc: Acad. Nat. Sci. Phila., p. 244, pl. 4, fig. 30. 1859.] (Plate XXX VII, 105.) 
E. spinosa (O. 8.) 
Antennae short in both sexes, extending about to the wing root or a little beyond; wings 
darker brown; vertical tubercle low, grayish. [Bul. U. 8. Geol. Survey, vol. 3, p. 205. 
LSTA Plate xexexe VLE AL OG2) 45 2h asi a ae ne ne aa ere _E. brachycera O. 8S. 
8. Color of body yellow or yellowish red...................... * aTiee Rage Tea 4 
Color. of bodysbrown;, gray, or, black... 2 .- o 2-6 see oe Se 5 
4, Antennae of male elongated, longer than the body; a blackish spot on the scutal lobes 
above the wing root. [Mon. Dipt. N. Amer., part 4, p. 255. 1869.] (Plate XX XVII, 
109) aa ste Ee Ee BR eee Eee ee E. wilsonii 0.8. 
(E. antennaria Doane [Journ. N. Y. Ent. Soc., vol. 8, p. 194, pl. 8, fig. 12, 1900] is. 
the same as EL. wilsonii O. 8.) 
Antennae short in both sexes; no blackish spot on the scutal lobes above the wing root. 
[Journ. N. Y. Ent. Soc., vol: 8, p. 194, pl. 8, fig. 13. 1900.]....... E. aurata Doane 
5. Thoracic dorsum gray; antennae of male elongated...........................-+..--- 6 
Thoracic dorsum brown or black; antennae short in both sexes....................... 7 
6. Vertical tubercle of male very large and high, greater than length of eye; first segment 
of antennal scape uniformly dark; prescutal stripes broad, dark brown, the median 
stripes about confluent and continued cephalad to the pronotum; cell /st M2 of wings 
short, pentagonal, usually with a spur into cell R; valves of ovipositor short, blunt, 
sub-fleshy. [Anisomera longicornis Walk., List Dipt. Brit. Mus., vol. 1, p. 82. 1848.] 
(Bla tevXEXexOViG LOT \eE Reine friars iene dung rs ee tee ee E. longicornis (Walk.) 
(E. gibbosa Doane [Journ. N. Y. Ent. Soc., vol. &, p. 193, pl. 8, fig. 10, 1900] is a 
doubtful species; in its coloration and, especially, in its venation, it is strikingly like H. 
longicornis [Walk.], but there is no mention in the original description of the size of 
the antennae.) 
Vertical tubercle of male moderate in size, not so high as length of eye; first segment 
of antennal scape pale beneath; prescutal stripes narrow, pale brown, the two middle 
stripes separate, becoming obliterated at about the level of the tuberculate pits; cell 
1st Ms of wings long, hexagonal; valves of ovipositor elongated, pointed, chitinized. 
[Psyche, vol. 19, p. 169-170, pl. 13, fig. 9. 1912.] (Plate XX XVII, 108.}..H#. cinerea Alex. 
7. Cell Re short, cross-vein r inserted on R2+3. [Psyche, vol. 19, p. 168- 169, Die So ie. 7 
1912.] (Plate SXEXOK VDD, SITS) ee eA nee nee E. fultonensis Alex. 
Cell R2 deep, cross-vein r inserted on Br. /.......1s0s.s 2 
8. Wings brown, the stigma small, rounded, brown; abdominal tergites brown. [Proc. 
Acad. Nat. Sci. Phila., p. 24387 pli, figs aie 1859.] ji Se E. fuliginosa O. 8. 
Wings blackish brown, the stigma oval, dark brown; abdominal tergites black. [Proc. 
Acad. Nat. Sci. Phila., p.602: 1914.] (Plate XX XVII, 110:).... 32... E. tristis Alex. 
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