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 : 19-20

Lygistorrhinidae sp. 1 (female)

Material studied: MALAYSIA, Pahang, Cameron’s Highlands, 1400 m, Malaise trap, 27. XI. 1994, Th. Pape, 1 Ψ ( NRM).

FEMALE. Total length about 2 mm. Head. Fig. 3 B. Antennal flagellomere 4, Fig. 4 C. Unicolourous light brown, darker brown around ocelli. Thorax similar to Fig. 7 A. Anterior pronotum with 5 setae, episternum 1 with 5 setae, laterotergite with 2 setae. Legs similar to B. blagoderovi , Fig. 7 B and C. Tarsal claws of all legs pointed. Wings similar to B. blagoderovi , Fig. 8 E. Wing length 1.27–1.28 mm. Abdomen similar to B. blagoderovi , terminalia, Fig. 12 A.

MALE: Unknown.

Discussion. This female resembles the species of Blagorrhina and Gracilorrhina . It differs from both by having only 10 flagellomeres, from the former by having the mouthparts much shorter and by having a totally setose scutum, and from the latter by the separate CuA1 and CuA2. We leave the placement of this species until either its male or the females of the other related groups are discovered.

Figures

FIGURE 3. Male (A) and female (B) head, frontal view. A: Gracilorrhina gracilis sp. n. (paratype). B. Lygistorrhinidae sp. 1 (Malaysia). Scale 0.10 mm.

FIGURE 4. Antennal flagellomere 4, lateral view. A: Blagorrhina blagoderovi sp. n. (paratype). B: Labellorrhina quantula sp. n. (paratype). C: Lygistorrhinidae sp. 1 (Malaysia). D: Blagorrhina brevicornis sp. n. (paratype). E: Gracilorrhina gracilis sp. n. (paratype). F: Labellorrhina grimaldii sp. n. (holotype). Scale 0.05 mm. 1: socketed seta, 2: seta­like sensillum / unsocketed seta, 3: peglike sensillum.

FIGURE 7. Blagorrhina blagoderovi sp. n. (paratypes): male thorax (A), lateral view, hind femur, tibia, and basitarsomere (B), retrolateral view, and apical part of hind tibia (C), retrolateral view. Scale for A and C 0.10 mm, for B 1 mm.

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.