Systematics of Robustagramma, a new genus of New World Sphaeroceridae (Diptera)
Author
Marshall, Stephen A.
Author
Cui, Yongsheng
text
Zootaxa
2005
2005-07-29
1026
1
1
122
https://biotaxa.org/Zootaxa/article/view/zootaxa.1026.1.1
journal article
10.11646/zootaxa.1026.1.1
11755334
5049813
3EDC6787-C73B-4969-BA06-022D0532364F
Robustagramma brasilense
Cui and Marshall
,
new species
(
Figs. 92–98
)
As described for
Robustagramma crassipalpus
except as follows.
Body length 2.0–
2.2 mm
. General color reddish to dark brown. Face, gena, antenna and lower frons reddish yellow to brown; head otherwise dark brown. Interfrontal bristles in three pairs in addition to small interfrontal setulae. Ocellar bristle slightly longer than posterior orbital bristle, similar to outer vertical bristles. Postvertical bristles slightly convergent. Eye height
ca
. 2.2–2.5 times genal height. Aristal hairs
ca
. 2.5 times as long as basal width of arista. Preapical palpal bristle distinctly longer than submedial palpal bristle, similar in length to maximum width of palpus. Prosternum with two pairs of small setulae. Acrostichal setulae in 6–8 irregular rows between anterior dorsocentral bristles. First costal sector distinctly thinner than second costal sector. Length of second costal sector
ca
. 0.56X length of third. R twice as long as first sector of R
4+5
. Fore tibiae yellow to reddish yellow. Mid tibia of male with an apicoventral bristle and several short ventral bristles on distal third; mid femur of male with a row of 6 ventral proximal bristles.
2+3
Male terminalia: Sternite 5 twice as long as sternite 4, with a toothlike emargination on protrudent posteromedial margin. Dorsomedial length of epandrium
ca
. 0.4X length of sternite 8. In lateral view, surstylus slightly longer than wide.
Female terminalia: Sternite 7 longer than sternite 6, rounded posteromedially; sternite 8 completely reduced to 2 small sclerites, each articulating with a sclerite of tergite 8. Spermatheca with distal half similar in width to basal half. Paired spermathecae with long ducts,
ca
. 4 times as long as spermatheca.
Holotype
(
♂
,
DEBU
):
BRAZIL
:
Pará
.
Belem
, APEG
Forest
,
x.1969
,
light trap
,
T. H. G. Aitken.
Paratypes
:
BRAZIL
:
Bahia
.
15 km
NE Porto Seguro
(Ecologica Reserva “PauBrasil”),
Primary Atlantic Forest
,
Shannon trap
,
19–27.ii.1986
,
Dalton de Souza Amorim
and
Vera
Cristina S. Amorim
(
2 ♀
,
DEBU
)
.