Xenosciara invisa, Vilkamaa, Pekka & Hippa, Heikki, 2004

Vilkamaa, Pekka & Hippa, Heikki, 2004, The genus Xenosciara gen. n. and the phylogeny of the Sciaridae (Diptera), Zootaxa 699, pp. 1-24 : 15

Xenosciara invisa sp. n.

Material studied. Holotype male: MALAYSIA, Pahang, Cameron’s Highlands, Tanah Rata, Robinson Falls, sweeping, 12.xii.1991, H. Hippa, B. Gustafsson & G. Sellerholm ( NRM).

Description (male). Head ( Fig. 6 ): Eye bridge 4 facets wide. Anterior vertex with 5 setae, prefrons with 12 setae, clypeus with 4 setae. Length/width of flagellomere 4 of antenna 2.25. Maxillary palp with 3 palpomeres, palpomere 1 with 5–6 setae, sensillae scattered on dorsal side. Thorax ( Fig. 7 ): Brown. Anterior pronotum with 4 setae, episternum 1 with 11 setae. Wing ( Fig. 8 C): Length 3.2 mm, width/length 0.45. c/ w 0.75, R1/R 0.80. M and Cu non­setose, r­m with 5 dorsal setae, bM non­setose, hind margin of wing with dorsal setae only. Legs ( Fig. 8 A, B): Apex of front tibia ( Fig. 8 A), length of basitarsomere 1/length of tibia 1 0.50. Spinose setae absent on T1, present on T2 and T3. Abdomen ( Fig. 8 D). Hypopygium ( Fig. 9 ).

For other characters, see under the description of the genus.

Female: Unknown.

Biology: Unknown. The single specimen was found in a semi­cultivated habitat.

Diagnostic characters: See under Xenosciara .

Figures

FIGURE 6. Xenosciara invisa sp. n. (holotype). — A: Head, frontal view, — B: Maxillary palp, basal palpomeres, dorsal view, apical palpomere, mesioventral view, — C: antennal flagellomere 4, ventral view, — D: apex of flagellomere 14, ventral view. Scale for A 0.50 mm, for B and C 0.10 mm, for D 0.05 mm.

FIGURE 7. Xenosciara invisa sp. n. (holotype): Thorax, lateral view. Scale 0.50 mm. 1 = scutum, 2 = scutellum, 3 = metanotum (phragma), 4 = anterior pronotum, 5 = episternum 1, 6 = anterior anepisternum, 7 = anterior anepimeron, 8 = pleurotergite, 9 = katepisternum, 10 = pleural pit, 11 = episternum 3, 12 = halter, 13 = coxa 2, 14 = anterior spiracle, 15 = posterior spiracle.

FIGURE 8. Xenosciara invisa sp. n. (holotype). — A: Apical part of front tibia, prolateral view, — B: Apical part of hind tibia, retrolateral view, — C: Wing, dorsal view, — D: Abdominal segment 5, lateral view. Scale for A, B and D 0.20 mm, for C 2.0 mm. 1 = tergite, 2 = sternite, 3 = spiracle, 4 = plaque.

FIGURE 9. Xenosciara invisa sp. n. (holotype). — A: Hypopygium, lateral view, — B: Hypopygium, dorsal view, — C: Hypopygium, ventral view, — D: Hypopygium, posterior view. Scale 0.20 mm. 1 = gonocoxite, 2 = gonostylus, 3 = basolateral apophysis of gonostylus, 4 = apical megasetae of gonostylus, 5 = tergite 9, 6 = cercus, 7 = tegmen, 8 = apodeme of tegmen (parameral apodeme), 9 = sternite 10, 10 = apicodorsal flagellate seta of gonocoxite.