Keilbachia foveolata, 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 : 43

publication ID

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

DOI

https://doi.org/10.5281/zenodo.6241302

persistent identifier

https://treatment.plazi.org/id/03DB4543-9C7C-FFC1-43DD-FC3FFBD5FEAB

treatment provided by

Plazi

scientific name

Keilbachia foveolata
status

sp. nov.

Keilbachia foveolata View in CoL sp. n.

( Figs 1 View FIGURE 1 E, 3F, 4B, 8B, C, D)

Material studied. Holotype male (in NRMS). N.E. Burma ( Myanmar), Kambaiti, 7000 ft., 4.4.1934, R. Malaise.

Male. Colour. The single specimen is strongly faded, almost unicolorous pale yellowish-brown. Head. Eye bridge, Fig. 8 View FIGURE 8 B, 3 facets wide, medially with a gap of two facets width. Face (prefrons) with 7 setae. Clypeus non-setose. Maxillary palpus ( Fig. 1 View FIGURE 1 E) with 2 palpomeres. Palpomere 1 with 1 seta, with many hyaline sensilla scattered on the dorsal surface, without sensory pit. Palpomere 2 with 4 setae. Antennal flagellomeres rather inflated in KOH and not drawn, flagellomere 4, in a non-inflated condition, apparently twice as long as broad. Thorax. Anterior pronotum with 1 seta. Episternum 1 with 5 setae. Wing ( Fig. 4 View FIGURE 4 B). Length 2.75 mm. Width/length 0.41. R1/R 0.98. c/ w 0.64. r-m and bM nearly equally long, r-m/bM 1.08, r-m with 1 seta very close to Rs, bM non-setose. Legs. Apex of fore tibia, Fig. 3 View FIGURE 3 F. Length of fore basitarsomere/ length of fore tibia ca. 0.72. Length of fore tibia/length of fore femur ca. 1.60. Length of hind tibia/length of scutum+scutellum ca 2.26. Abdomen. Sternite 8 visible in lateral view and the setae difficult to count, with ca. 20 setae, in two transverse rows on posterior half. Hypopygium. Fig. 8 View FIGURE 8 C, D: Gonostylus with 2–3 long curved mesial megasetae arising from a common basal body; whether the number of these megasetae really is two on the left side in the holotype is uncertain because the number of sockets is impossible to see. Between the curved megasetae and the apical tooth with two widely-separated megasetae. Near the base of the apical tooth with two or three strong setae diverging from other nearby setae, at least one of which has a curvature near base. Posteriorly to the ventral intercoxal area with a small pit, not like the other species. Tegmen very pale in this specimen and the details difficult to see: it seems rather simple.

Female unknown.

Discussion. Keilbachia foveolata is similar to K. rima . It is distinguished by having two palpomeres instead of three and by lacking a megaseta at the base of the apical tooth of the gonostylus. In K. foveolata there are two or three strong setae ventrally near the base of the apical tooth of the gonostylus, which differ distinctly from the other nearby setae; in K. rima such setae are lacking. K. foveolata differs from K. rima by having a small sclerotized pit medially in the membrane on the intercoxal area of hypopygium. In this respect, K. foveolata resembles Keilbachia sp. 3, but the latter has three palpomeres.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Sciaridae

Genus

Keilbachia

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