Peralia hermanni (Kröber) Krober, 2006

Webb, Donald W., 2006, The neotropical genera Microthereva Malloch and Peralia Malloch (Diptera: Therevidae: Therevinae), Zootaxa 1295, pp. 1-27 : 15-18

Peralia hermanni (Kröber) New combination.

( Figs. 29 , 31 )

hermanni Kröber (1911:485 fem. key, 488 fem. desc.; 1913: 20 sp. key, 22 dist.; 1928:113 desc., Fig. 18 ant.), Ortiz (1946:87 cat.) ( Anabarhynchus ). Type locality Chile, O’Higgins, Rancagua [Rankagua]. Holotype female in ZSM by monotypy. New combination.

Diagnosis

Characters separating Peralia hermanni from P. v i t t a t a are given in the key.

Redescription of male

Variation (n=4).

Body length 8.8–10.9, 10.0 mm.

Head. Length 1.2–1.5, 1.4 mm. Frons dark reddish brown, pruinescence yellowish brown dorsally, pruinescence on ventral fourth white extending lateral to antennal base; setae dark reddish brown, elongate. Scape and pedicel dark yellow, pruinescence gray, flagellum dark brown; antenna/head length 0.81–0.93, 0.87; scape length 0.45–0.56, 0.47 mm, width 0.18–0.22, 0.21 mm, length/width 1.8–2.5, 2.3, scape/pedicel length 3.1–3.7, 3.4, scape/flagellum width 0.95–1.10, 1.02, setae dark brown, elongate grading into macrosetae; pedicel length 0.12–0.15, 0.14 mm, width 0.18–0.20, 0.19 mm, length/width 0.56–0.75, 0.63; flagellum length 0.54–0.60, 0.57 mm, width 0.19–0.22, 0.20 mm, length/ width 2.7–2.9, 2.8, flagellum/scape width 1.0–1.5, 1.3. Parafacial dark brown, pruinescence white. Maxillary palpus pale yellow; length 0.60–0.82, 0.71 mm, width 0.10 mm, length/width 6.0–8.2, 7.1; setae pale yellow, elongate. Genal setae white. Occipital setae pale yellow, elongate, absent on dorsal half.

Thorax. Macrosetae 5–6 np, 2 sa, 1 pa, 2–4 dc, 2 sc. Mesonotum pruinescence gray; vittae brown, dorsocentral vitta narrow, distinct, dorsolateral vittae appear as broken patches of brown; setae black, short, erect. Postpronotal lobe setae black. Pleuron dark brown, pruinescence gray; setae white on propleuron, anepisternum, dorsal half of katepisternum, laterotergite, and metanepisternum, dark brown on scutellum. Wing. Membrane pale gray; veins brown; length 8.9–10.2, 9.6 mm, width 2.7–3.3, 3.0 mm, length/width 3.1–3.4, 3.2; pterostigma dark brown. Halter dark brown. Legs. Coxae dark yellow, pruinescence white, dense; setae white, elongate. Femora dark yellow, glossy; ventral setae absent; av 0:0:0–1. Tibiae dark yellow. Tarsomere 1 dark yellow; 2–5 pale brown.

Abdomen. Dark reddish brown becoming reddish brown posterolaterally, pruinescence white, light on dorsal surface, dense along lateral margin on tergites 1–6; dorsal setae dark brown, short, appressed medially, white, elongate laterally; lateral setae white, elongate becoming dark brown on posterior segments. Terminalia . Identical to terminalia of P. vittata . Tergite 8 with setae continuous across posterior margin (MEI 169938). Setae on gonocoxite ventrally view reddish brown, paler posteromedially

Female

Similar to male except for following.

Variation (n=10).

Body length 9.4–12.0, 10.3 mm.

Head. Length 1.2–1.5, 1.3 mm. Frons covered with dense, yellowish brown pruinescence. Antenna/head length 0.81–0.93, 0.86; scape length 0.38–0.56, 0.44 mm, width 0.14–0.22, 0.18 mm, length/width 2.0–2.9, 2.5, scape/pedicel length 3.0–4.2, 3.7, scape/flagellum width 0.7–1.1, 1.0; pedicel length 0.10–0.15, 0.12 mm, width 0.14–0.20, 0.17 mm, length/width 0.6–0.9, 0.7; flagellum length 0.50–0.66, 0.57 mm, width 0.14–0.20, 0.18 mm, length/width 2.5–3.9, 3.2, flagellum/scape length 1.0–1.6 1.3. Maxillary palpus length 0.50–0.82, 0.63 mm, width 0.06–0.14, 0.10 mm, length/width 5.0–9.0, 6.8.

Thorax. Macrosetae 2–6 np, 1–2 sa, 1 pa, 2–3 dc, 2 sc. Wing. Length 8.3–10.2, 9.2 mm, width 2.5–3.3, 2.8 mm, length/width 3.1–3.6, 3.3. Legs. Anteroventral macrosetae 0:0:1.

Abdomen. Dark reddish brown, glossy becoming reddish brown posterolaterally, pruinescence white, dense along lateral margin on tergites 1–5; dorsal setae dark brown, short, appressed; lateral setae white, elongate becoming dark brown on posterior segments. Terminalia (MEI 121364). Dark reddish brown. Median lobe of tergite 9 lacking setae. Furca ( Fig. 29 ) oval; length 0.78 mm, width 0. 38 mm; common duct shorter than length of furca; spermathecal ducts joined for short distance before joining spermathecal sac duct; spermathecal duct narrow posteriorly, becoming threadlike and convoluted anteriorly before ending in large, oval spermatheca; spermathecal sac duct narrow, over five times length of furca before bifurcating to form two large spermathecal sacs.

Distribution

Peralia hermanni is reported from Argentina and Chile ( Fig. 31 ).

Habitats and phenology

Peralia hermanni has been handnetted or collected in Malaise traps in dry riverbeds and Nothofagus forests. Adults have been collected from October to March.

Specimens examined

Type specimen. The holotype female of Anabarhynchus hermanni Kröber is labeled " CHILE, Rancagua [­34.167, ­70.75], 12.1903, P.HERBST" and is in ZSM. Other specimens. ARGENTINA. NEQUEN. San Martin de los Andes [­40.16 ­71.36], 11.XII.1946, Aczel, M., 1Ψ MEI 169955 ( IMLA). CHILE. Poncoche, 18.II.1959, Vegoelt, M.E., 1Ψ MEI 169934 ( MEUC). ACONCOGUA. Llay­Llay [­32.84, ­70.95], 4.II.1951, Ross, Michelbacher, 1Ψ MEI 169948 ( CAS). ARAUCANIA. Cautin, 12.3 km N Loncoche [­39.256, ­72.633], 280 m, 2.II.1967, Schlinger, E.I., 1Ψ MEI 169960 ( MEIC); Cautin, 12.7 km N Loncoche [­39.252, ­72.633], 280 m, 18.XII.1966, Irwin, M.E., 2Ψ ME I 169957, 169959 ( INHS). BIO­BIO. 5 km W Tucapel [­36.78, ­73.065], 28.XII.1950, 1Ψ MEI 169958 ( CAS); Concepción [­36.833, ­73.05], 29.XII.1958, Vicaro, 1Ψ MEI 169949 ( MEUC); 7.5 km E Recinto [­36.877 ­71.579], 760 m, 4–6.I.2000, Irwin, M.E.; Schlinger, E.I., 8Ψ MEI 121364 –8, 121369 –71 ( MEIC), Malaise trap, in dry riverbed; Cobquecura [­ 36.128, ­72.786], 14.XII.1958, Peña, L.E., 1Ψ MEI 169944 ( CNC); Las Trancas [­36.927, ­71.606], 15–18.II.1959, Peña, L.E., 1Ψ MEI 154224 ( CNC); Invernada, Cordillera Chillan, –. II.1971, Ocare, 1Ψ MEI 169932 ( MEUC). COQUIMBO. 10 km E Fray Jorge National Park, 28.XII.1966, Irwin, M.E., 1Ψ MEI 169935 ( MEIC); Hacienda Illapel [­ 31.631 ­71.165], 600–1000 m, 1–6.XI.1954, Peña, L.E., 1Ψ MEI 169930 ( CNC); Hacienda Illapel, Río Illapel, Caren. [­31.631 ­71.165], 800 m, 14.XI.1963, Edmunds, G.F., 1♂ MEI 147522 ( CNC); Huintil [­31.567, ­70.967], 650 m, 12.XI.1963, Peña, L., 1Ψ MEI 169925 ( CNC); Ovalle [­30.598 ­71.2], 5.X.1942, Reed, E.P., 1Ψ MEI 169924 ( CAS); El Naranjo, Tilama [­32.083 ­71.167], – I.1968, Molina, J., 1Ψ MEI 169926 (MUE C); – III.1968, Molina, J., 1Ψ MEI 169928 ( MUEC); – XII.1968, Molina, J., 1Ψ MEI 169927 ( MUEC); Fray Jorge National Park [­30.644 ­71.65], 250 m, 24.XI–12.XII.2003, Parker, F.D., Irwin, M.E., 2Ψ MEI 167928, 167932 ( MEIC), Malaise trap in picnic area.

LOS LAGOS. Llanquihue, Casa Pangue [­41.05 ­71.867], – XII.1926, Shannon, R. & E., 1♂ MEI 169938 ( USNM). MAULE. Curicó, 15 km E Curicó, Cerro Huecahuecan [­35.067 ­ 71.123], 400 m, 22–31.XII.1997, Barriga, J.E., 1Ψ MEI 121328 ( MEIC), Malaise trap, Nothofagus forest; Curicó, Estero la Jaula [­35.083, ­70.8], – I.1964, Peña, L., 2Ψ MEI 0 28482, 169942 ( CNC); about 20 km SE Chovellen, Alto Tregualemu [­36.027, ­72.556], 500 m, 1.XII–3.XII.1981, Davis, D.R., 1Ψ MEI 169962 ( USNM); W Cauquenes, Cayarranquil [­35.967, ­72.35], 400 m, 23–31.I.1981, Peña, L., 4Ψ MEI 169923, 169937, 169939, 169956 ( USNM); W Cauquenes, La Arboleda [­35.967, ­72.35], 200–250 m, 27–28.I.1981, Peña, L., 1Ψ MEI 169951 ( USNM); Curicó, La Jaula, Los Quenes [­34.967, ­70.756], 4–18.I.1964, Rivera, M., 1Ψ MEI 0 78911 ( FMNH); Linares, Fundo Malcho [­ 35.85, ­71.6], –. II.1958, Peña, L.E., 1Ψ MEI 0 79689 ( CNC); – III.1958, Peña, L.E., 1Ψ ME I 0 79721 ( CNC); Curanipe [­35.84, ­72.63], 4.XII.1953, Peña, L.E., 1Ψ MEI 169953 ( CNC); 0.5 km W Vilches [­35.6 ­71.2], 615 m, 13.I.1967, Irwin, M.E., 1Ψ MEI 169933 ( MEIC). METROPOLITANA DE SANTIAGO. La Rinconada de Maipú, Quebrada de la Plata [­33.517, ­70.783], 510 m, 11.XII.1966, Irwin, M.E., 1Ψ MEI 147521 ( MEIC), Malaise trap; 12.XII.1966, Irwin, M.E., 2Ψ MEI 169921–2 ( MEIC), Malaise trap; 1.I.1967, Irwin, M.E., 1Ψ MEI 0 88129 ( MEIC), Malaise trap: Macul [­33.503, ­70.572], 3.XI.1974, 2Ψ MEI 112343, 112347 ( UCCC); Santiago, Colina, El Portezuelo [­34.117 ­71.233], 1–15.XI.1978, Peña, L.E., 2Ψ MEI 0 78899, 0 78914 ( FMNH); Santiago, El Camelo, 29.XI.1954, Peña, L.E., 1Ψ MEI 169947 ( CNC); Santiago, Quebrada San Ramon, 1974, 1Ψ MEI 0 78923 ( FMNH); Santiago, Rio Clarillo [­33.65, ­70.633], 7.XII.1989, Marshall, S.R., 1Ψ MEI 169929 ( DEBU); Santiago, Apoquido [­33.4, ­70.533], – I.1957, Etcheverry, 1Ψ MEI 169954 ( MEUC); Talagante [­33.667, ­70.933], date?, Etcheverry, 1Ψ MEI 169931 ( MEUC); La Obra, Río Maipo [­33.583, ­70.5], 18–23.XII.1953, Peña, L.E., 1Ψ MEI 147519, 169961 ( CNC); Maipu [­33.517, ­70.767], 500 m, 31.X.1959, Peña, L.E., 1Ψ MEI 079700–1 ( CNC); Santiago [­33.45, ­70.667], Pirian, 1Ψ MEI 169950 ( USNM); El Manzano, 1.XI.1989, Peña, L.E., 1Ψ MEI 112349 ( UCCC).

Figures

FIGURES 20 – 29. Peralia vittata. 20. Tergite 8, epandrium, cerci, hypoproct, dorsal view. 21. Sternite 8, gonocoxite, ventral view. 22. Gonocoxite, dorsal view. 23. Gonocoxite, lateral view. 24. Gonostylus, lateral view. 25. Aedeagus, dorsal view. 26. Aedeagus, ventral view. 27. Aedeagus, lateral view. 28. Female internal reproductive organs. Peralia hermanni. 29. Female internal reproductive organs. Scale = 0.1 mm. Abbreviation: LEP = lateral ejaculatory process, SpSd = spermathecal sac duct.

FIGURES 30 – 32. Distribution maps. 30. Microthereva argentiventris (closed circles), M. variventris (arrow). 31. Peralia hermanni. 32. Peralia vittata.

FIGURES 11 – 19. Microthereva variventris. 11. Tergite 8, epandrium, cerci, hypoproct, dorsal view. 12. Sternite 8, gonocoxite, ventral view. 13. Gonocoxite, dorsal view. 14. Gonocoxite, lateral view. 15. Gonostylus, lateral view. 16. Aedeagus, dorsal view. 17. Aedeagus, ventral view. 18. Aedeagus, lateral view. 19. Female internal reproductive organs. Scale = 0.1 mm.