Pseudopterogramma magnum, Kuwahara & Marshall & Luk, 2025

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 : 36-40

Parapterogramma magnum sp. nov.

urn:lsid:zoobank.org:act:E0321F2C-9CD1-41F7-9924-0B03F56E3E8B

Figs 17–19 , 40G , 42

Etymology

The species name (from the Latin ‘ magnus ’, ‘large, great, big’) is in reference to the large body size compared to the other species of Parapterogramma .

Material examined

Holotype AUSTRALIA – Queensland • ♂; Rosina Creek, 14 km SE of Millaa Millaa, Palmer Highway ; 720 m a.s.l.; 24 Jun.–2 Aug. 1982; S. Peck leg.; rainforest, flight intercept trap; QMBA.

Paratypes AUSTRALIA – New South Wales • 6 ♂♂, 4 ♀♀; Bruxner Park, 8 km N of Coffs Harbour; 140 m a.s.l.; 12 Jun.–26Aug. 1982; S. Peck leg.; rainforest, flight intercept trap; AMSA • 5 ♂♂, 4 ♀♀; same collection data as for preceding; DEBU • 5 ♂♂, 3 ♀♀; Ingalla State Forest, 30 km S of Macksville; 40 m a.s.l.; 12 Jun.–26 Aug. 1982; S. Peck leg.; wet sclerophyll, flight intercept trap; AMSA • 5 ♂♂; same collection data as for preceding; DEBU . – Queensland • 2 ♂♂, 1 ♀; same collection data as for holotype; QMBA • 1 ♂, 3 ♀♀; Brisbane Forest Park, Scrub Creek Road ; 27°25′41″ S, 152°50′15″ E; 29 Sep.–3 Oct. 2002; C.R. Nelson leg.; Malaise trap; QMBA • 2 ♂♂; Brisbane Forest Park, Scrub Creek Road ; 27°25′41″ S, 152°50′15″ E; 29 Sep. 2002; C.R. Nelson leg.; yellow pans; QMBA • 1 ♂, 3 ♀♀; Hugh Nelson Range, 19 km NW of Millaa Millaa, near the Crater ; 1080 m a.s.l.; 24 Jun.–2 Aug. 1982; S. and J. Peck leg.; flight intercept trap; DEBU • 1 ♂, 2 ♀♀; Kirra State Forest, 32 km NW of Cardwell; 800 m a.s.l.; 23 Jun.–8 Aug. 1982; S. and J. Peck leg.; rainforest, flight intercept trap; QMBA • 1 ♂, 1 ♀; Kuranda State Forest, 3 km N of Kuranda; 360 m a.s.l.; 25 Jun.–3 Aug. 1982; S. Peck leg.; rainforest, flight intercept trap; DEBU • 1 ♂; Lamington National Park, Binna Burra ; 900 m a.s.l.; 23 Jun.–7 Aug. 1978; S. and J. Peck leg.; Nothofagus grove, carrion; DEBU • 2 ♀♀; Mary Cairncross Park, 7 km SE of Maleny; 900 m a.s.l.; 18 Jun.–15 Aug. 1982; S. and J. Peck leg.; rainforest, flight intercept trap; QMBA • 1 ♀; Mount Finnigan Slopes, 30 km S of Cooktown; 400 m a.s.l.; 2–5 Jun. 1982; S. and J. Peck leg.; rainforest, dung trap; DEBU • 4 ♂♂, 2 ♀♀; Mount Lewis, 20 km SW of Mossman; 900 m a.s.l.; 26 Jun.–1 Aug. 1982; S. and J. Peck leg.; rainforest, flight intercept trap; DEBU • 4 ♂♂, 3 ♀♀; same collection data as for preceding; QMBA • 7 ♂♂, 10 ♀♀; Paluma, Paluma Dam Road ; 850 m a.s.l.; 22 Jun.–6 Aug. 1982; S. Peck leg.; rainforest, flight intercept trap; DEBU • 7 ♂♂, 10 ♀♀; same collection data as for preceding; QMBA • 1 ♀; Sluice Creek ; 17°32′ S, 145°32′ E; 1100 m a.s.l.; 14–17 Apr. 1999; G.B. and S.R. Monteith leg.; rainforest, fungus trap; QMBA • 2 ♂♂; Yabba Creek, 7 km SW of Kenilworth; 150 m a.s.l.; 18 Jun.–15 Aug. 1982; S. and J. Peck leg.; wet sclerophyll, flight intercept trap; DEBU • 1 ♂, 1 ♀; Yabba Creek , 7 km SW of Kenilworth; 15 Aug. 1982; S. and J. Peck leg.; rainforest litter; QMBA .

Description

BODY ( Fig. 17 ). Length 1.4–1.9 mm. Head dark brown with silver-gold microtomentum on lunule, interfrontal plates, ocellar triangle, orbital plates, and occiput; gena caramel-brown; antenna brown. Frontal width 2.5× interfrontal height. Eye height 2.5× genal height. Thorax dark brown, anepimeron with a pale ventral spot. Scutum with pale grey and brown microtomentum forming indistinct dark longitudinal stripes, lateral margins broadly pale yellow microtomentose, pale M-shaped microtomentose mark at level of posterior dorsocentral bristles; scutellum dark brown with median, grey-brown microtomentose triangle. Anterior dorsocentral bristles separated by 7–8 rows of acrostichal setulae. Legs dark brown, femora apically and tibiae proximally paler, tarsi pale brown. Male mid tibia with a stout apicoventral bristle and two rows of stout ventral setae. Wing ( Fig. 40G ) pattern strong. CS2 0.5× CS3. R 2+3 almost straight for most of its length, distal quarter abruptly bent towards costa, causing R 2+3 to reach costa at a ~60° angle and moderately separated from costa for most of its length; costa extending very slightly beyond apex of R 4+5 (1–2 × costal width). M 1 and M 4 both extended slightly beyond dm-m; CuA+CuP long and tubular. Halter white.

MALE ABDOMEN ( Fig. 18 ). S5 narrow, posteromedially desclerotized with long posterolateral setae. S6 short and broadened. Cercus small, flat with a very large seta and two smaller setae, mesial edges touching each other; subepandrial sclerite broadly pentagonal and medially darkened. Surstylus large, bilobed: anterior lobe low, triangular with several ventral setae, posterior lobe large, rectangular, apically setulose. Postgonite elongate with a long, triangular lateral fin and a strong, triangular posterior extension. Phallapodeme relatively short, stout with a broad, arrow-like apical part; basiphallus narrow but long and box-like with an elongate, flattened and apically setulose epiphallus. Distiphallus stout: basal part well sclerotized and tubular, with a well-developed dorsal sclerite and separate, apically bifurcate lateral sclerites; apical part with large membranous flaps and supported by basal part.

FEMALE ABDOMEN ( Fig. 19 ). T6 semicircular, well-developed, and long-setose along posterior margin; T7 well-developed, rectangular and long-setose along posterior margin; T8 large, slightly emarginate posteromedially with long setae in posterolateral margins. Epiproct largely reduced. S6 and S7 well-developed and rectangular; S8 large, semicircular, and uniformly long-setose, posterior edge with a broad desclerotized margin. Hypoproct semicircular, with sclerotized anterolateral edges and a membranous, setulose medial part. Spermathecae stout, spherical, and smooth, stem short and sclerotized.

Remarks

Parapterogramma magnum is externally most similar to Pa. gonitellum sp. nov., from which it differs in having a broader frons (width 2.5× height), straighter R 2+3, long and tubular CuA+CuP, and the costa only extending 1–2 costal widths beyond R 4+5.

Figures

Fig. 17. Parapterogramma magnum sp. nov., holotype (QMBA). A. Male habitus, lateral view. B. Male head, anterodorsal view. Scale bars: A = 0.50 mm; B = 0.25 mm.

Fig. 18. Parapterogramma magnum sp. nov., paratype (DEBU). A. Male terminalia, posterior view. B. Male terminalia, lateral view. C. Aedeagus and associated structures, lateral view. D. Male S5–8, ventral view. Scale bars: A–D = 0.10 mm.

Fig. 19. Parapterogramma magnum sp. nov., paratype (DEBU). A. Female terminalia, dorsal view. B. Female terminalia, ventral view. C. Female terminalia, lateral view. D. Single spermatheca. E. Paired spermathecae. Scale bars: A–C = 0.30 mm; D–E = 0.01 mm.

Fig. 40. Parapterogramma Papp, 2008, left wings, ventral views. A. Parapterogramma asiaticum Papp, 2008 (LKCNHM). B. Parapterogramma bicolor sp. nov., paratype (BPBM). C. Parapterogramma dentatum sp. nov., holotype (DEBU). D. Parapterogramma digitisternum sp. nov., paratype (DEBU). E. Parapterogramma gonitellum sp. nov., paratype (DEBU). F. Parapterogramma hieroglyphicum sp. nov., paratype (BPBM). G. Parapterogramma magnum sp. nov., paratype (QMBA). H. Parapterogramma matau sp. nov., paratype (DEBU). Scale bars: A–H = 0.50 mm.

Fig. 42. Distribution map of Parapterogramma Papp, 2008.