Keilbachia bicuspis, Hippa, Heikki & Vilkamaa, Pekka, 2007

Hippa, Heikki & Vilkamaa, Pekka, 2007, The flagria group of Keilbachia Mohrig (Diptera, Sciaridae) in a biodiversity hot spot: nine new sympatric species from Kambaiti, Myanmar, Zootaxa 1556, pp. 31-50 : 39

publication ID

https://doi.org/ 10.5281/zenodo.178251

DOI

https://doi.org/10.5281/zenodo.6241292

persistent identifier

https://treatment.plazi.org/id/03DB4543-9C78-FFC4-43DD-FF77FB61FBC5

treatment provided by

Plazi

scientific name

Keilbachia bicuspis
status

sp. nov.

Keilbachia bicuspis View in CoL sp. n.

( Figs 1 View FIGURE 1 F, 2A, 3H, 5D, E)

Material studied. Holotype male (in NRMS). N.E. Burma ( Myanmar), Kambaiti, 7000 ft., 15.4.1934, R. Malaise.

Male. Colour. The specimen is strongly faded, almost unicolorous pale yellowish-brown. Head. Eye bridge 3 facets wide. Face (prefrons) with 5 setae in a transverse row. Clypeus with 1 seta. Maxillary palpus ( Fig. 1 View FIGURE 1 F) with three palpomeres. Palpomere 1 with one seta, with numerous hyaline sensilla widely scattered on dorsal surface, no sensory pit; palpomere 2 with ca. 7 setae; palpomere 3 with ca. 7 setae. Antennal flagellomere 4, Fig. 2 View FIGURE 2 A. Thorax. Number of setae on anterior pronotum and episternum 1 not counted because the sclerites are badly damaged in the single specimen. Wing. Length 2.7 mm. Width/length 0.42. R1/R 1.21. c/ w 0.79. r-m and bM equal in length, r-m/bM 1.00, both non-setose. Legs. Apex of fore tibia, Fig. 3 View FIGURE 3 H. Length of fore basitarsomere/length of fore tibia 0.79. Length of fore tibia/length of fore femur 1.48. Length of hind tibia/length of scutum+scutellum not counted because the thorax is distorted. Abdomen. Sternite 8 with ca. 20 setae, widely spread. Hypopygium. Fig. 5 View FIGURE 5 D, E: Gonostylus with two rather short arcuate mesial megasetae arising from a common basal body and one megaseta at the base of the apical tooth. Tegmen laterally compressed so that the sides partly cover each other, and many of the details difficult to interpret.

Female unknown.

Discussion. Keilbachia bicuspis is not especially similar to any other Keilbachia . It is one of the five species with only two curved megasetae on the gonostylus, the other four being K. acamptochaeta , K. biflagrispina , K. oligonema and K. sp. 2. K. bicuspis differs from all of these except for K. acamptochaeta by having the curved megasetae short and stout, only about twice the length of their basal body instead of being several times longer than the basal body. K. bicuspis differs from K. acamptochaeta by having only one megaseta in addition to the curved ones on its gonostylus, whilst in K. acamptochaeta there are three. K. bicuspis differs further by having maxillary palpus three-segmented, not one-segmented.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Sciaridae

Genus

Keilbachia

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