Enlinia elongata Robinson 1969

Enlinia elongata

MALE.—Length 1.4 mm; wing 1.7 mm by 0.62 mm. Front metallic dark bluish with brown pollen; face (Figure 101) narrowed below, with grayish pollen; eyes contiguous or nearly contiguous in lower half, anterior facets enlarged. Palpus and proboscis dark. Antenna black, segment 3 blunt, arista half again as long as face.

Mesoscutum dark metallic green with slight yellowish pollen, pleura more brown; setae dark with pale reflections; 6–8 pairs of acrostichals, a few hind pairs longer; 6 or 7 pairs of dorsocentrals, hind pairs rather long; scutellum hind margin rather broadly and evenly rounded, bristles as near sides as middle.

Legs brown with pale trochanters, often basitarsi or even tibiae paler; setae mostly dark. Forecoxa with some prominent dark hairs anteriorly; fore- and middle femur with small slender erect seta ventrally at base; hind femur with a few scattered short black setae ventrally toward base; fore- and middle tibiae in dried material rather broad and flattened; middle tibia (Figure 100) with rather long reclining hairs on most surfaces, hairs more crowded ventrally, many very short stout erect black setae ventrally toward the tip; hind tibia with usually 5–7 small but distinct posterodorsals, 3 or 4 similar but more widely spaced anterodorsals. Foretarsus (Figure 99) with segments 1 and 2 rather compressed, 2nd with acute projection on distal hind corner, segment 3 slightly asymmetric, flattened with stout black hooked seta posteriorly beyond the middle, segments 4 and especially 5 rather flattened, lengths of segments from base as 12-6-5-6-10; middle tarsus as 14-9-8-5-10, segment 5 somewhat enlarged and flattened; hind tarsus as 15-14-12-9-11.

Wing (Figure 97) elliptical, hind margin evenly rounded, rather clear; vein 2 slightly more arched in basal half, only slightly curved forward at tip; vein 3 curving slightly and evenly back in distal half; crossvein about as long as last of vein 5. Knob of halter brown or black.

Abdomen (Figure 103) slightly longer than thorax, cylindrical, blackish with violet reflections, setae dark; sternites without auxiliary genitalia. Hypopygium small, capping tip of preabdomen, brown with small pale brown short-pubescent lamellae below, with a pair of long pale flattened tapering and apically hooked armatures extending forward.

FEMALE.—Similar to male in general body form and in chaetotaxy of hind tibia, but face (Figure 102) very broad below, as wide as antennal segment 3 and covered with brown pollen; forecoxa with weaker and generally paler hairs; femora without distinctive ventral setae; middle tibia plain with pair of very small dorsals; foretarsus plain, segments as 17-6-6-5-9; wing (Figure 98) larger and generally laxer in build, crossvein slightly longer than last of vein 5.

TYPE-DATA.—Holotype ♂ and allotype ♀ from Mexico: Oaxaca, Sierra Juarez, Route 175, 104 km marker, by stream and pools among rocks, wet shaded rocky ravine in rain forest area, 19 May 1963, H. Robinson (USNM 70302). Paratypes: same data as holotype, 2 ♂ and 3 ♀; all collected H. Robinson.