EMBIOPTERA OF THE NEW WO'RLD — ROSSi 481 



Male. — Color (on slide) : Similar to chiapae. Length 7 mm.; fore- 

 wing length 5.7 mm., breadth 1.4 mm. 



Head (fig. 136) as illustrated. Wings: R4+5 forked in basal third 

 instead of basal fourth as in chiapae. Terminalia (figs. 137, 138) 

 differing from chiapae as follows: Talonlike portion of left tergal 

 process (10 LP) broader; outer broad portion only half as long as 

 the "talon" instead of nearly equal, its apical margin transverse, 

 biemarginate. Left cercus-basipodite with "claws" separate (not 

 fused), directed caudad instead of mesad. 



Female. — Unknown. 



H olotype. —M^ilQ, on slide (U.S.N.M. No. 56761). 



Type data. — Collected at light, Rio Santiago (1,400 m.), Jalapa, 

 Veracruz, Mexico, August 11, 1932 (R. Ruiz Sota). 



Remarks. — The holotype specimen has most of the left cercus 

 missing, but it is safe to assume that this appendage is similar to 

 that of chiapae in view of the very close relationship of the two 

 species. The holotype, as well as that of chiapae, was kindly sent 

 to me for study by Dr. Alfons Danipf, of Mexico City. 



OLIGEMBIA (DILOBOCERCA) CHIAPAE, new species 

 FiGUKEs 133-135 



Male. — Color (on slide) : Head, mouthparts, antennae, and inner 

 margin of basal segment of right cercus chocolate brown ; remainder 

 of specimen tan, terminalia slightly darker. Length 6.5 mm. ; fore- 

 wing length 5.0 mm., breadth 1.3 mm. 



Head (fig. 133) as illustrated. 



Wings with Rj+s forked at basal fourth in forewings and hindwings. 



Terminalia (figs. 134, 135) with basal projection of tenth tergite 

 rounded, extending to basal third of ninth tergite. Left tergal 

 process (10 LP) not strongly tilted; talonlike inner portion rather 

 broad basally, only slightly longer than broad outer portion; outer 

 portion abruptly emarginated basally on left side, apical margin 

 with a single emargination to left of median projection which is 

 blunt, margin to right of this projection simple, gradually slanting 

 basad ; cleft between inner and outer portions of 10 LP broad. 

 Right tergal processes (10 RPi and 10 RP2) simple, the major process 

 very sharply pointed. Paraproct (LPPT) similar to emarginata. 

 Left cercus-basipodite (LCB) with "claws" sclerotic, fused, directed 

 dorsomesad; ventral lobe simple. Basal segment of left cercus (LCi) 

 strongly, broadly lobed apically on inner side; outer apical angle 

 extensively membranous. Basal segment of right cercus with inner 

 margin evenly, inwardly arcuate — this margin darkly pigmented; 

 outer apical angle extensively membranous. Terminal segments of 

 both cerci equal. 



55273]— 4.^ 6 



