1006 REPORT OF THE HARVARD AFRICAN EXPEDITION 
Nephrotoma tumidiverticalis, new species 
General coloration yellow, variegated with black; posterior region of vertex and the occiput 
extensively blackened; praescutum and scutum chiefly blackened, the scutellum and postnotal 
mediotergite orange-yellow; pleura blackened, variegated with yellow, especially on the posterior 
sclerites; legs with the femora yellow, the tips broadly blackened, most extensively so on the fore 
femora; wings brownish yellow, the stigma pale brown; abdominal tergites yellow, trivittate with 
black, the caudal margins of the segments further margined with black, restricting the ground- 
color to sublateral areas, these becoming smaller to finally obliterated on the outer segments. 
Male. — Length about 13 mm.; wing 12-13 mm. 
Described from alcoholic specimens. 
Frontal prolongation of head high, bright yellow, restrictedly infuscated dorso-medially; 
nasus brownish black; palpi light brown, the terminal segment paler. Antennae (<”) relatively 
long, if bent backward extending to about opposite midlength of the second abdominal segment; 
scapal segments yellow, the first darker above; flagellum entirely black, the basal segments moder- 
ately incised. Head with the vertical tubercle unusually inflated, slightly compressed, the cephalic 
margin weakly bifid, bright yellow; posterior region of head dark brown, sending cephalad three 
prolongations, one along the inner margin of each eye, in addition to a narrow capillary median 
vitta; postgenae yellow. 
Pronotum black, obscure yellow medially. Mesonotal praescutum almost covered by three 
broad black stripes, the humeral region appearing as restricted yellow triangles; scutal lobes and 
parascutella black, the median region of the scutum pale; scutellum obscure yellow, with a brownish 
median area on posterior margin; postnotal mediotergite chiefly orange-yellow, slightly darkened 
laterally. Pleura almost entirely blackened, the dorso-pleural region pale; vague yellowish areas 
on the posterior portions of the anepisternum, pteropleurite, and dorsal portion of meron; pleuro- 
tergite variegated by a large yellow area. Halteres dusky, the tips of the knobs paler. Legs 
with the coxae black; trochanters abruptly yellow; femora yellow basally, the tips blackened, 
this very broad on the fore legs where only the basal fourth is yellow; on middle and hind femora 
the black tips are subequal and include approximately the distal sixth; tibiae dark brown, the tips 
narrowly blackened; tarsi black. Wings with a brownish yellow ground-color, the costal margin 
and cell Cu, more saturated; stigma oval, pale brown; basal half of stigma with about a dozen 
macrotrichia; vague brown seams on anterior cord; veins darker. Venation: Sc; preserved except 
at extreme tip; Rs gently arcuate, about one-third longer than the basal section of R4+5; cell M, 
sessile. 
Abdomen with tergite one black, narrowly margined caudally with yellow; remaining tergites 
yellow, heavily trivittate with black, the caudal margins of the segments likewise blackened, 
restricting the yellow to sublateral areas that decrease in amount on the outer segments, on the 
sixth and seventh tergites being greatly reduced; eighth tergite black with a circular orange mark 
at base on either side of the median line; ninth tergite black, the caudal margin paler medially; 
sternites with the caudal margins of the individual segments extensively blackened, the amount 
increasing on the outer segments; hypopygium dark, the styli yellow. Male hypopygium with the 
tergite transverse, the caudal margin with a broad U-shaped emargination which is occupied by a 
flattened yellowish shelf, this further divided by a linear median notch. Eighth sternite with a 
weak median emargination. 
Hab. Breuatan Coneo (Kivu). 
Holotype, alcoholic #, Rueru Camp, on southwest slope of Mt. Mikeno, 
altitude 9,150 feet, in bamboo region, March 15, 1927 (J. Bequaert). Para- 
topotypes, 2 Fe. 
I cannot identify this handsome Nephrotoma with any of the numerous Ethi- 
opian species so far described. 
Nephrotoma, species 
The following specimens, all females, are present: Bumba, Belgian Congo, 
2° 10’ N., 22° 30’ E., December 31, 1926; Lulenga, Belgian Congo, 1° 20’ &., 
