136 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 12$ 



SIMTJLIUM (LANEA) DOWNSI Vargas, Martinez, and Diaz 



Simulhtm (Lanea) doinmsi Vargas, Martinez, and Diaz, Rev. Inst. Salubr. 

 Enferm. Trop., vol. 7, No. 3, pp. 126-129, 167, figs. 41-44, 128, 1946 (original 

 description, c?, ?, pupa, and larva). — Dalmat, Ann. Ent. Soc. Amer., vol. 44, 

 No. I, pp. 54-57, 1951 (presence in Guatemala and distribution). 



Male (pi. 23, figs. 31-33). — 2.7 mm. long. 



Head : Holoptic. Eyes dark reddish brown. Antenna 440 //, long, 

 ii-segmented, very slightly tapering; segment 3<i-l-2, 3<4 + 5> 

 3>ii; scape and pedicel yellow, flagellum brown. Palpi brown. 

 Clypeus brown, white-pruinose, with few black hairs principally on 

 the margins. 



Thorax : Mesonotum yellow to orange, with 2 wide bands of white 

 pruinosity, one on either side of midline, that extend from the anterior 

 margin slightly more than one-third the way back, their anterior end 

 wider than the posterior; short, yellow, scalelike hairs over entire 

 mesonotum, more numerous around periphery, never in packets ; short 

 black hairs sparsely distributed over entire mesonotum, longer on 

 prescutellar region but not as long as those found in the same region 

 of most other species. Humeral angles yellow, white-pruinose, with 

 yellow scalelike hairs. Scutellum pale yellow with yellow scalelike 

 hairs and with long, strong black hairs. Postnotum dark brown, mid- 

 line yellow, with white pruinosity, devoid of hairs. Pleura brown, 

 white-pruinose. Stem of halter brown, the knob yellow, cup-shaped. 

 Wings, 2.2 mm. long and 0.9 mm. wide ; relation of length of body to 

 wing, 1.2 : I ; Sc pilose along basal fourth ; Ri spiny along apical half, 

 with a single hair sometimes present among the more basal spines ; 

 R2+3 pilose along its apical five-sixths ; Cua arcuate ; discal cell absent. 



Legs : Leg i, length, 2.3 mm. ; coxa, trochanter, and femur yellow ; 

 basal three-fourths of tibia yellow, apical fourth dark brown; its 

 posterior edge along basal half also brown ; tarsus black. Leg 2, length, 

 2.0 mm. ; coxa brown ; trochanter and femur yellow ; tibia yellow, the 

 posterior edge on apical half brown ; basal two-thirds of basitarsus 

 yellow, the remainder, as well as all of tarsal segments 2-5, dark 

 brown. Leg 3, length, 2.3 mm. ; coxa brown ; trochanter yellow ; femur 

 yellow on basal three-fourths, its apical fourth brown ; tibia with basal 

 half yellow, apical half black; basal half of basitarsus and of second 

 segment yellow, their apical halves, as well as all of segments 3-5, 

 black; relation of basitarsus to second segment, 4.6: i ; calcipala well 

 developed, nearly reaching the pedisulcus; pedisulcus well developed 

 on basal third of second segment. 



Abdomen : Tergite of segment i yellow with short black hairs ; 

 pleurites yellow with long dark hairs reaching segment 5. Segment 2 



