Pterogrammoides thaii Papp, 1989

Kuwahara, Gregory K., Marshall, Stephen A. & Luk, Stephen P. L., 2025, A revision of Parapterogramma Papp and Pseudopterogramma Papp, with a review of the Parapterogramma genus group of the Pacific and Indomalayan regions (Diptera, Sphaeroceridae, Limosininae), European Journal of Taxonomy 998, pp. 1-124 : 119-122

Pterogrammoides thaii Papp, 1989

Figs 72–73

Pterogrammoides thaii Papp, 1989: 336 .

Pterogrammoides thaii – Roháček et al. 2001: 216.

Type material

Holotype

THAILAND – Chanthaburi • ♂; Khao Sabap National Park, near Phlin Waterfalls ; 150–300 m a.s.l.; 23–24 Nov. 1986; D.H. Burckhardt and I. Löbl leg.; ‟tamisage de débris végétaux et de mousses à proximité de cours d’ eau”; MHNG.

Paratype

THAILAND – Phetchaburi • 1 ♂; Kaeng Krachen National Park , 35 km from “Headquarters”; 450 m a.s.l.; 19 Nov. 1985; D.H. Burckhardt and I. Löbl leg.; ‟tamisage de débris végétaux dans la forêt”; HNHM .

Material examined

AUSTRALIA – Queensland • 1 ♂; 30 km S of Cooktown, Mount Finnigan slopes; 400 m a.s.l.; 1 Jul. 1982; S. and J. Peck leg.; rainforest litter and fungi; DEBU • 1 ♂, 3 ♀♀; same collection data as for preceding; 3 Jul. 1982; moist litter pockets; DEBU • 1 ♂, 1 ♀; Fitzroy Island , site 4; 15 m a.s.l.; 16°56′ S, 145°59′ E; 19–21 Apr. 1999; G.B. Monteith leg.; transition to rainforest, dung trap; QMBA • 2 ♂♂; Mossman Gorge National Park , 6 km SW of Mossman; 50 m a.s.l.; 11 Jul. 1982; S. Peck leg.; rainforest litter; DEBU .

Redescription

FEMALE ABDOMEN ( Fig. 73 ). T3–5 completely indistinct, with only the posterior row of setae indicating their presence; S2–5 desclerotized but distinct. Abdomen 1.2× length of head + thorax. T6 reduced, rectangular, desclerotized anteromedially and posteromedially with transverse medial row of six long setae; T7 well-developed, broad, rectangular with long posterolateral setae; T8 split into two large lateral plates with patch of setae in upper posterior corner. Epiproct membranous and indistinct with a pair of dorsal setae. Cercus stout, slightly flattened, with fine, sinuate apical and preapical setae. S6 rectangular, pale but distinct; S7 rectangular and slightly darker than S6, with posterior row of setae; S8 large, subtriangular, with more anterior row of larger setae and two posterior rows of smaller setae. Hypoproct reduced, largely membranous with posterior row of small setae. Spermatheca (only one present) very large, ovoid and lightly grooved basally, stem elongate and smoothly tapered with ringlets of minute spinules apically.

Distribution

Australasian/Oceanian: Australia (new record). Indomalayan: Thailand ( Papp 1989).

Remarks

Papp’s (1989) description and illustrations of Pt. thaii , based on males only, are almost identical to those for Pt. indicus (still known only from males), with the only differences noted being colouration, slightly thicker legs, longer wings, and larger overall genitalia. No illustrations or description of the male genitalia are given here as the figures in Papp (1989) are adequate, but the previously unknown female abdomen of Pt. thaii is described. Pterogrammoides thaii is newly recorded from Australia.

Figures

Fig. 72. Pterogrammoides thaii Papp, 1989. A. Male habitus, lateral view (debu00157157, QMBA). B. Male head, anterior view (debu00157157, QMBA). C. Left wing (DEBU). A, C = 0.50 mm; B = 0.25 mm.

Fig. 73. Pterogrammoides thaii Papp, 1989 (DEBU). A. Female terminalia, dorsal view. B. Female terminalia, ventral view. C. Female terminalia, lateral view. D. Spermatheca. Abbreviations: cer = cercus; epi = epiproct; hyp = hypoproct. Scale bars: A–C = 0.30 mm; D = 0.01 mm.