8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Type-data. — Holotype cf and allotype 9 from Mexico: Guerrero, 

 Rio Papagayo near Tierra Colorado, May 29, 1963, H. Robinson 

 (USNM 69433). Paratypes: same data as holotype, 7 9. 



Notes. — H. attenuata is related very closely to the more widely 

 distributed H. clavicauda, showing among other things the same 

 curved abdomen with the more apically positioned hypopygium, and 

 similar pubescent lobes on uninflated bases of the hypopygial lamellae. 

 The only obvious difference between the species is in the very differ- 

 ently shaped apex of the hypopygial lamellae. At present I know of 

 no differences between the females of the two species and I cannot be 

 certain the associated females are not specimens of H. clavicauda. 

 When more male specimens are available, the lack of distinct dorsals 

 on the hind tibia as seen in the holotype may prove to be significant. 



Harmstonia clavicauda, new species 



Figure 7 



Male. — Length 1.00 mm; wing 1.17 mm by 0.42 mm. Front 

 brown; antennal segment 3 short, rather obliquely truncate with 

 lower corner somewhat produced. Bases of coxae and tarsi from tips 

 of basitarsi brownish, femora very slightly infuscated, legs otherwise 

 yellow; middle femur with a weak preapical; middle tibia with a weak 

 anterodorsal and a weak posterodorsal near basal third, hind tibia 

 with a few weak dorsals, tibiae otherwise without prominent dorsals 

 or apicals; lengths of segments of foretarsus from base as .13-.05-.05- 

 -.05-.05 mm; middle tarsus as .19-.11-.08-.06-.06 mm; hind tarsus 

 as .13-.19-.11-.07-.06 mm. Tips of wing veins 2 and 3 are l)i to 

 1% times as far apart as tips of veins 3 and 4, vein 3 bending slightly 

 and becoming nearly parallel with vein 4 distally; crossvein % as 

 long as, to as long as, last of vein 5; knob of halter yellow. Abdomen 

 curving distinctly downward; hypopygium (fig. 7) mounted directly 

 on apex of abdomen, ca. .21 mm long; hypopygial lamella with a 

 short hooked tip, with a large densely pubescent lobe on lower margin, 

 without inflated area at base. 



Female. — Face bearing four small setae. 



Type-data. — Holotype c? and allotype 9 from Mexico: Chiapas, 

 May 22, 1963, H. Robinson (USNM 69434). Paratypes: same data 

 as holotype, 1 cf and 1 9; Veracruz, near Santiago Tuxtla, Aug. 8, 

 1962, 6 c? and 2 9; Morelos, near Cuernavaca, May 28, 1963, 2 cf 

 and 3 9; all collected by H. Robinson. 



Group II 



Tibiae bearing strong setae or distinct rows of setae, hind tibia 

 without distinct apicals or ventrals, hypopygial lamellae broadly oval 



