Parapterogramma peckorum, 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 : 46-51

Parapterogramma peckorum sp. nov.

urn:lsid:zoobank.org:act:382F4723-818D-4761-9563-A733F357C71D

Figs 25–27 , 41B , 42

Etymology

This species name is in honour of Dr Stewart B. Peck and Dr Jarmilla Kukalová-Peck whose collecting efforts yielded many of the Parapterogramma specimens examined in this project, including several specimens of this species.

Material examined

Holotype

Fiji – Viti Levu • ♂; Nandarivitu, Y 00 Microwave Station; 3350 m a.s.l.; 16–23 Aug. 1978; S. and J. Peck leg.; BPBM.

Paratypes

FIJI – Kadavu • 1 ♀; 0.25 km SW of Solodamu Village, Moanakaka Bird Sanctuary ; 19°04′41″ S, 178°07′16″ E; 50 m a.s.l.; 23 Oct.–6 Nov. 2004; S. Lau leg.; Malaise; DEBU . – Taveuni • 2 ♀♀; Cakaudrove, Devo Peak ; 10–16 Jan. 2003; Irwin, Schlinger, and Tokota’ a leg.; BPBM • 3 ♂♂; Cakaudrove, Mount Devo , 5.3 km SE of Tavuki Village; 16°50′28″ S, 179°58′05″ W; 1064 m a.s.l.; 17– 24 Oct. 2002; Schlinger and Tokota’a leg.; Malaise; DEBU • 1 ♂; same collection data as for preceding; 24–31 Oct. 2002; BPBM • 3 ♀♀; same collection data as for preceding; 7–23 Oct. 2004; P. Vodo leg.; Malaise; BPBM ; • 1 ♂; Cakaudrove, 5.6 km SE of Tavuki Village, Mount Devo ; 16°50′35″ S, 179°57′54″ W; 1187 m a.s.l.; 3–10 Jan. 2003; Schlinger and Tokota’ a leg.; rainforest Malaise; BPBM • 1 ♀; Cakaudrove, Lavena ; 16°51′32″ S, 179°53′34″ W; 213 m a.s.l.; 4–19 Nov. 2003; Irwin, Schlinger, and Tokota’ a leg.; rainforest Malaise; BPBM • 1 ♂; Cakaudrove, Devo Peak Radio Tower ; 16°51′ S, 179°58′ E; 1200 m a.s.l.; 31 Oct.–21 Nov. 2002; Irwin, Schlinger, and Tokota’a leg.; rainforest Malaise; DEBU . – Vanua Levu • 2 ♂♂; 4 km NW of Kilaka Village, Wainibeqa ; 16°48′29″ S, 178°59′13″ E; 87 m a.s.l.; 9–20 Dec. 2004; P. Manueli leg.; Malaise; DEBU ; • 1 ♂, 2 ♀♀; Bua, 6 km NW of Kilaka, Batiqere Range ; 16°48′24″ S, 178°59′29″ E; 98 m a.s.l.; 15–24 Jun. 2004; Schlinger and Tokota’ a leg.; Malaise; DEBU • 1 ♀; Bua, 6 km NW of Kilaka Village, Batiqere Range ; 16°48′55″ S, 178°59′11″ E; 146 m a.s.l.; 15–26 Apr. 2004; Schlinger and Tokota’a leg.; Malaise; BPBM • 1 ♀; same collection data as for preceding; 15–28 Jun.2004; BPBM ; • 1 ♀; Bua, Kilaka Village ; 16°48′41″ S, 178°59′29″ E; 98 m a.s.l.; 28 Jun.–21 Jul. 2004; Irwin, Schlinger, and Tokota’a leg.; Malaise; BPBM . – Viti Levu • 8 ♂♂, 10 ♀♀; same collection data as for holotype; DEBU • 7 ♂♂, 10 ♀♀; same collection data as for holotype; CNCI • 11 ♂♂, 4 ♀♀; same collection data as for holotype; forest dung; DEBU • 12 ♂♂, 5 ♀♀; same collection data as for holotype; forest dung; CNCI • 1 ♀; 4 km NW of Lami Town, Mount Korobaba ; 18°06′14″ S, 178°22′52″ E; 250 m a.s.l.; 1–13 Dec. 2004; K. Koto leg.; Malaise; BPBM • 3 ♂♂; 4 km WSW of Colo-I-Suva Village, Mount Nakobalevu ; 18°03′18″ S, 178°25′26″ E; 372 m a.s.l.; 12–24 Oct. 2002; Timoci leg.; Malaise; BPBM • 1 ♀; 10 km N of Galoa ; 300 m a.s.l.; 1 Sep. 1978; S. and J. Peck leg.; DEBU • 8 ♂♂, 11 ♀♀; 15 km N of Suva, Tholoisuva Watershed ; 200 m a.s.l.; 25–31 Aug. 1978; S. and J. Peck leg.; rainforest; DEBU • 2 ♀♀; Vuda, Koroyanitu EcoPark , 1 km E of Abaca Village; 17°40′01.2″ S, 177°33′00.0″ E; 800 m a.s.l.; 2–16 Nov. 2004; L. Tuimereke leg.; Malaise; BPBM • 1 ♂, 1 ♀; Suva, Tholoisuva Watershed ; 25–31 Aug. 1978; S. and J. Peck leg.; carrion trap; DEBU .

Other material examined

FIJI – Viti Levu • 1 ♂, 1 ♀; Naitasiri, 4 km WSW of Colo-I-Suva Village, Mount Nakobalevu ; 18°03′21″ S, 178°25′19″ E; 325 m a.s.l.; 17 Mar.–9 Apr. 2003; Schlinger and Tokota’ a leg.; Malaise; BPBM • 1 ♀; same collection data as for preceding; 4–14 Nov. 2003; BPBM • 1 ♂, 1 ♀; Naitasiri, 4 km WSW of Colo-I-Suva Village, Mount Nakobalevu ; 18°03′18″ S, 178°25′26″ E; 372 m a.s.l.; 17 Mar.–9 Apr. 2003; Schlinger and Tokota’a leg.; Malaise; DEBU • 2 ♀♀; same collection data as for preceding; 14–28 Jul. 2003; DEBU • 1 ♀; Naitasiri, Mount Nakobalevu , below tower near Scaevola in bloom; 18°03′ S, 178°25′ E; 461 m a.s.l.; 22 Sep.–8 Oct.2002; Irwin, Schlinger, and Tokota’ a leg.; BPBM • 1 ♂, 1 ♀; Naitasiri, Mount Nakobalevu ; 18°03′ S, 178°25′ E; 340 m a.s.l.; 24–29 Oct. 2003; Irwin, Schlinger, and Tokota’ a leg.; rainforest Malaise; DEBU • 1 ♀; Naitasiri, Navai Village, Eteni ; 17°37′ S, 177°59′ E; 700 m a.s.l.; 24 Oct.–8 Nov. 2003; Irwin, Schlinger, and Tokota’a leg.; Malaise; DEBU • 2 ♂♂, 1 ♀; same collection data as for preceding; 6 Jun.–15 Jul. 2003; BPBM • 1 ♀; Namosi, 2 km SE of Nabukavesi Village, Ocean Pacific Resort ; 18°10′15″ S, 178°15′29″ E; 40 m a.s.l.; 22–7 Jul. 2003; Schlinger and Tokota’a leg.; Malaise; BPBM • 1 ♂; Namosi, Wainadoi, Pacific Ocean ; 18°10′ S, 178°15′ E; 40 m a.s.l.; 5–24 Nov. 2003; Irwin, Schlinger, and Tokota’ a leg.; coastal Malaise; DEBU • 1 ♀; Vuda, 0.5 km N of Abaca Village, Koroyanitu EcoPark, Mount Evan’s Range ; 17°40′01″ S, 177°33′00″ E; 800 m a.s.l.; 26 Oct.–6 Nov. 2002; Schlinger and Tokota’a leg.; Malaise; BPBM • 1 ♀; same collection data as for preceding; 16–20 Nov. 2004; L. Tuimereke leg.; BPBM • 2 ♂♂; same collection data as for preceding; 13–27 Dec. 2004; DEBU • 1 ♂; same collection data as for preceding; Mount Evan’ s Range ; 26 Nov.–3 Dec. 2002; BPBM • 1 ♂; same collection data as for preceding; Kokabula Trail; BPBM .

Description

BODY ( Fig. 25 ). Length 1.2–1.5 mm. Head caramel-brown, paler under microtomentum, with silvery microtomentum limited to bases of interfrontal and orbital bristles, ocellar triangle, lunule, and around inner vertical bristle; gena yellow; antenna yellow-brown. Frontal width 2.5× interfrontal height. Eye height 2.5× genal height. Thorax brown. Scutum with pale grey and brown microtomentum forming two dark longitudinal stripes, lateral margins broadly yellow microtomentose, pale M-shaped microtomentose mark at level of posterior dorsocentral bristles; scutellum brown with median, dark brown microtomentose triangle. Anterior dorsocentral bristles separated by 9–10 rows of acrostichal setulae. Legs brown, mid femur apically paler, tarsi slightly paler. Male mid tibia with stout apicoventral bristle only. Wing ( Fig. 41B ) pattern weak. CS2 0.5 × CS3. R 2+3 broadly curved in apical half, angled at ~60° to costa; costa extending well beyond apex of R 4+5 (5–6 × costal width). M 1 indistinct beyond dmm; M 4 extended beyond dm-m; CuA+CuP long. Halter brown.

MALE ABDOMEN ( Fig. 26 ). S5 broad, deeply posteromedially desclerotized and densely long-setose posterolaterally. S6 curved with a tab-like, densely setulose, posteromedial lobe. Cercus flat, subtriangular and indistinct from epandrium, with several small setae; subepandrial sclerite indistinct but medially darkened. Anteromedial apodeme of hypandrium elongate and sinuate. Surstylus long but low, bilobed: anterior lobe larger, subrectangular, setulose on the inner ventral surface with pointed anteroventral apex, posterior lobe triangular, curved downwards and twisted inwards, with setulae along anterior margin. Postgonite short but broad, curved, evenly tapered with apex bifurcate, posterior half pale. Phallapodeme elongate, gently curved with slightly hooked apex; basiphallus flattened laterally and elongate with a slender, slightly sinuate, tapered epiphallus. Distiphallus stout, complex but largely membranous, basal half with a pair of ovoid upper sclerites, apex supported by pair of curved dorsolateral sclerites, lower surface almost entirely papillate.

FEMALE ABDOMEN ( Fig. 27 ). T6 and T7 rectangular, desclerotized anteromedially (T7 divided completely) and long-setose along posterior margin; T8 broad and entire, laterally expanded posteriorly with long lateral setae. Epiproct membranous, indistinct. S6 rectangular; S7 broadly emarginate and long-setose along posterior margin; S8 subtriangular, anteriorly projecting into emargination of S7, with V-shaped row of setae. Hypoproct reduced, rectangular, largely membranous except for a sclerotized, setulose medial part. Spermathecae stout, subcylindrical, slightly wider at base, lightly grooved with deep invaginations at both ends, each invagination with a small central projection, stem very short and membranous.

Remarks

Parapterogramma peckorum sp. nov. is externally similar to Pa. matau sp. nov. and Pa. tokotaai sp. nov. Males of Pa. peckorum differ from those of Pa. tokotaai by their mid tibial chaetotaxy, including a weak apicoventral bristle and a conspicuous row of stout anteroventral seta; both sexes differ from Pa. matau in having a distinct extension of M 4 beyond dm-m.

Figures

Fig. 25. Parapterogramma peckorum sp. nov., paratype (DEBU). A. Male habitus, lateral view. B. Male head, anterodorsal view. Scale bars: A = 0.50 mm; B = 0.25 mm.

Fig. 26. Parapterogramma peckorum 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. 27. Parapterogramma peckorum 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. 41. Parapterogramma Papp, 2008, left wings, ventral views. A. Parapterogramma ofiensis sp. nov., holotype (DEBU). B. Parapterogramma peckorum sp. nov., paratype (DEBU). C. Parapterogramma pollex sp. nov., paratype (DEBU). D. Parapterogramma pugioformis sp. nov., paratype (DEBU). E. Parapterogramma simplex sp. nov., paratype (CNCI). F. Parapterogramma tokotaai sp. nov., paratype (BPBM). Scale bars: A–F = 0.50 mm.

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