Dragonflies (Odonata) From The Sierras Of Tapirapeco And Unturan, In The Extreme South Of Venezuela DeMarmels, Jurg Acta Biologica Venezuelica 1992 14 1 57 78 8SZP Selys, 1876 Selys 1876 [194,836,1031,1068] Insecta Coenagrionidae Acanthagrion Animalia Odonata 5 62 Arthropoda species apicale   Figures 25-29(larva)  Material.  3♂ 1♀(reared, with exuviae), Base Camp.  Larva. Occipital lobes bulging, but not angled, beset with spines; occipital border deeply excavated. Labium ( Fig. 25) reaching to beyond first pair of coxae. Antennae seven-jointed ( Fig. 26), Hind border of pronotum with lateral angles pro· duced, but not pointed. Wing sheaths reaching to base of segment 5 ( Fig. 27). Tibiae and tarsi with scattered soft hairs. Adomen dark with a pale longitudinal dorsomedian line; posterior angles of segments 4-8 strongly marked off and beset with spinules; ovipositor slightly surpassing end of segment 10, valves beset with about four larges spines and a few very smaIl ones, in a single row ( Fig. 28). Lateral and central caudal gills of same length, sharply pointed ( Fig. 29). Measurements. Total length (excl. gills) 10.5; caudal gills 7.0; hind femur 2.5.  Remarks. The larva of  A. apicalecomes closest to that of A.luteum Racenis described by Geijskes (1941) sub "  A. ascendensCalvert", but specimens were not compared directly. The larva was found in a small stagnant pool in close vicinity of a sandy creek, in the forest. The pool was filled with leaf litter, had a sandy ground and clear wa· ler.. A larva of  Fylgia amazonicalychnitinaDe. Marmels was found in the same pool (see below). 2433522112 1989-02-14 1989-03-06 1989-02-14 MIZA J. DeMarmels & A. Chacon Venezuela 160 2.036111 Base Camp and surroundings, on the upper Rio Mavaca, left bank -65.113884 5 62 4 1 3 Amazonas