Lygistorrhinidae

Hippa, Heikki, Mattsson, Ingegerd & Vilkamaa, Pekka, 2005, New taxa of the Lygistorrhinidae (Diptera: Sciaroidea) and their implications for a phylogenetic analysis of the family, Zootaxa 960, pp. 1-34 : 20

Lygistorrhinidae sp. 2

Material studied: MALAYSIA, Pahang, Genting Highlands, Awana, primary forest, 6.III.1997, M. Jaschhof, 1 Ψ ( NRM).

FEMALE. Total length about 2.5 mm. Head similar to Lygistrorrhinidae sp. 1 except for antennal flagellomere with 13 segments, the lateral rows of setae on frons absent and clypeus with about 10 setae; the proboscis is broken from near base. Thorax similar to Fig. 6 A. Anterior pronotum with 7 setae. Epimeron 1 with 7 setae. Laterotergite non­setose. Wing, Fig. 8 A. Wing length 1.74 mm. Legs similar to G. gracilis , Fig. 6 B, C and D, but the legs are generally a little stouter. Tarsal claws of all legs pointed. Abdomen paler than thorax, terminalia, Fig. 12 B.

MALE: Unknown.

Discussion. This female has considerable similarity to the male of Gracilorrhina gracilis but differs significantly by having a colour pattern on the wing ( Fig. 8 A). The general structure is similar to that of Gracilorrhina , Blagorrhina , Loyugesa , Matileola , and Seguyola . The lack of mouthpart characters in the single specimen before us makes it impossible to discuss its affinities further.

Figures

FIGURE 6. Gracilorrhina gracilis sp. n. (paratypes): male thorax (A), lateral view, hind femur, tibia and basitarsomere (B), prolateral view, apical part of hind tibia (C), retrolateral view and apical part of middle tarsus (D), prolateral view. Scale for A 0.10 mm, for B 1 mm, for C and D 0.05 mm. 1: scutum, 2: scutellum, 3: posterior pronotum, 4: anterior pronotum, 5: episternum 1, 6: prosternum, 7: anterior spiracle, 8: anterior anepisternum, 9: katepisternum, 10: position of pleural pit, 11: epimeron 2, 12: laterotergite, 13: episternum 3, 14: epimeron 3, 15: posterior spiracle, 16: mediotergite, 17: furcasternum 2, 18: coxa 1, 19: coxa 2, 20: coxa 3, 21: haltere, 22: abdominal tergite 1, 23: abdominal sternite 1, 24: socketed seta, 25: non­socketed seta (trichium), 26: microtrichia, 27: dot­like sensillum.

FIGURE 8. Male (B­E) and female (A) wing, dorsal view. A: Lygistorrhinidae sp. 2 (Malaysia). B: Labellorrhina grimaldii sp. n. (holotype). C: L. quantula sp. n. (paratype). D: Gracilorrhina gracilis sp. n. (paratype). E: Blagorrhina blagoderovi sp. n. (paratype). Scale 0.50 mm.

FIGURE 12. Female terminalia, lateral view. A: Lygistorrhinidae sp. 1 (Malaysia). B: Lygistorrhinidae sp. 2. (Malaysia). Scale 0.05 mm. 1: sternite 8, 2: tergite 9, 3: tergite 10, 4: sternite 10, 5: basal segment of cercus, 6: apical segment of cercus, 7: egg, 8: spermatheca.