Review of the genus Keilbachia Mohrig (Diptera: Sciaridae), with the description of eleven new species
Author
Vilkamaa, Pekka
Author
Menzel, Frank
Author
Hippa, Heikki
text
Zootaxa
2009
2272
1
20
journal article
10.5281/zenodo.190981
0181209c-0f8a-4ad2-a128-b7c79197985c
1175-5326
190981
Keilbachia brevicoxa
sp. n.
(
Fig. 4
A–E)
Type locality: NEPAL: Kakani. |
Material examined: Holotype
|
male.
|
NEPAL: |
Kakani, |
2070 |
m |
a.s.l., |
secondary |
pine/oak |
forest, |
9– |
23.8.1983, H.G. Allen (BMNH). |
FIGURE 4.
Keilbachia brevicoxa
sp. n.
(holotype). Maxillary palpus (A) in lateral view, scape, pedicel and flagellomere 1 of antenna (B), in ventral view, apex of front tibia (C) in prolateral view, part of hypopygium (D) and gonostylus (E) in ventral view. Scale for B 0.05 mm, for others 0.10 mm.
Description. Male.
Colour
. Almost unicolorous pale brown, maxillary palpus and legs paler brown than the other parts, abdomen slightly paler than thorax, wing fumose brownish, haltere pale brown.
Head
. Eye bridge 3 facets wide. Face (prefrons) with 10 widely spread setae. Clypeus non-setose. Maxillary palpus,
Fig. 4
A: with 3 palpomeres. Palpomere 1 with 1 seta, the hyaline sensilla in patch on the dorsal surface, no sensory pit. Palpomere 2 with 4 setae. Palpomere 3 with 5 setae. Antennal flagellum beyond 1 lost in the
holotype
, scape, pedicel and flagellomere 1,
Fig. 4
B.
Thorax
. Anterior pronotum with 3 setae. Episternum 1 with 5 setae.
Wings
. Length
1.3 mm
, partly broken in the specimen, width not measurable. R1/R 0.70. c/
w 0.80
. r-m and bM of equal length, but no exact measures were made because the basal parts of stM and bM are difficult to see; r-m and bM non-setose.
Legs
missing or in poor condition in the specimen; no measurements made. Fore tibia subapically with a prolateral row of strong setae,
Fig. 4
C.
Abdomen
. Sternite 8 with 7 setae in a transverse row on posterior part.
Hypopygium
(
Fig. 4
D
,
E
). Tegmen with roundish apical part and with distinct basolateral shoulders. Aedeagal apodeme very narrow, moderately long. Gonocoxite with ventroapical corner elongated, mesial margin and membrane with rather long setae. Gonostylus large, longer than gonocoxite, broad, with roundish lateral side, with a mesial processus. Gonostylus also with a short, curved sub-basal megaseta on a small basal body, with one subapical megaseta, no apical tooth.
Female.
Unknown.
Discussion.
Keilbachia brevicoxa
resembles
K
.
hamata
Menzel, 1995
, also described from
Nepal
, by having the gonostylus protruded mesially lobe-like, with one rather stout short and curved megaseta subbasally on the gonostylus, and by lacking the apical tooth.
K. brevixoca
differs by having the gonostylus relatively larger, the mesial protrusion of gonostylus smaller, and by having only one, not two, subapical megasetae, and by lacking a long seta mesially. In addition,
K. brevicoxa
is obviously much smaller, and has most of the modified subapical setae of the fore tibia thick and in a row, not slender and in a large patch.