Revista Chilena De Entomología

Revista Chilena de Entomología. Vol. 6, diciembre 1968 47

STUDIES IN NEOTROPICAL ACROCERIDAE, PART I.

A REVISIÓN OF ARRHYNCHUS PHILIPPI AND A KEY TO THE GENERA OF THE OCNAEA BRANCH OF THE PANOPINAE (DÍPTERA)

1 EVERT I. SCTILINCER

Department o£ Entomólogo' University of California Riverside, California

ABSTRACT

The Chilean genus Arrhynchus Philippi is reinstated (= Ocnaea of authors) and revised. The

type species, A. vittatus Philippi, is redescribed, while new combinations propo-sed are A. stuardoi

(Sabrosky) and A. meridionalis (Sabrosky) . The new species, A. penai Schlinger and A. maculatus Schlinger are described and notes are given on the rearing of the latter species from a theraphosid spider. INTRODUCTION ACKNOWLEDGMENTS

A study of this rare group of Díptera could not have ráre Arrhynchus was descri- The rather genus been, completed without the kind assistance of many in- bed by Philippi (1871) and he included in terested persons and institutions. I express roy sincere gratitude to cióse friend, Luis E. Peña, now with the it only its monotype, A. vittatus Phil., from my Universidad de Chile, who greatly aided my field studies Chile. When Edwards (1930) discussed the in Chile and loaned me important material, and to acrocerids o£ Chile he suggested (without one of my gradúate students, Michael E. Irwin, who seeing any specimens) that Arrhynchus was helped to gather much important field data on Chilean acrocerids during 1966-67. Miss Maria Etcheverry, probably a synonym of Ocnaea Erichson. It To Centro Investigaciones Entomológicas, Universidad de wasn't until I had the opportunity to see the Chile, Mr. H. Toro, Universidad Católica, Valparaíso type specimen of A. vittatus and other spe- and Guillermo Kuschel, now in New Zealand, I am in- cimens of this genus that I became certain debted for the loan of specimens, and specially to the latter person who was responsible for the loan of the Arrhynchus was a valid genus but one closely Philippi type specimens from the National Museum related to Ocnaea. Philippi (1871) apparently ccllection in Santiago, Chile, which is now under the ovas unaware of the genus Ocnaea, for he re- curation of Vicente Pérez. lated his new genus only to Panops (nec. La- My eight-month expedition in Chile was sponsored marek, but rather to Chilean species of Lasia both by the John Simón Guggenheim Foundation and by the Convenio Program of the University of Califor- Wiedemann as he knew them) nia and Universidad de Chile, and their generous assis-

Arrhynchus now includes five species and tance is greatly appreciated. Excellent laboratory faci- is apparently autochthonous to Chile, while lities at the Estación Experimental Agronómica at La Rinconada, Chile, were made available to me to study Ocnaea oceurs from southern United States acrocerids and their spider hosts, and I wish to acknow- south to Brazil, but does not oceur in Chile. ledge my colleagues Dr. Roberto González, Dr. Luciano

This is the fifteenth in a series of articles Campos, Mr. Raúl Cortés, Mr. Nelson Hichins and others on the Entomology staff for their friendly help dealing with reviews or revisions towards a and interest while I was studying in Chile. monograph of the Acroceridae. Two papéis The abbreviations listed below are used in the text citing are most of the references in this series to determine the present location of the speciment used

those of Schlinger (1961 and 1968) . This is in this study:

also the first in a planned series dealing with (lp) — Señor Luis. E. Peña collection, Santiago, Chile, systematics, biologies, distributions and taxo- (cuv) — Universidad Católica de Valparaíso, Chile. nomic notes on Neotropical acrocerid flies. (cas) — California Academy of Sciences, San Francisco, California, usa. 'Part of this study was undertaken while the author (amnh) — American Museum of Natural History, New was a Guggenheim Fellow in Chile, 1966-67. York, New York, usa. Rev. Chil. Ent. 6, 1968

(usnm) — United States National Museum, Wash- Arrynchus Philippi ington, DC., USA.

(cíe) — Centro Investigaciones Entomológicas, Univer- Arrhynchus Philippi, 1871: 291-292; Reed, sidad de Chile, Santiago, Chile. 1888: Hunter, 1901: Kertes'z, (eea) — Estación Experimental Agronómica, Universi- 288; 152; dad de Chile, Maipú, Chile. 1909: 11.

— I. Schlinger collection, University of Ca- (eis) Evert Ocnaea oí authors, nec. Erichson; Edwards, lifornia, Riverside, California, usa. 1930: 188, Stuardo, 1946: 102, Sabrosky, (cnhm) — Museo Nacional de Historia Natural de Chi-

le, Santiago, Chile. 1946: 190. Type species: Arrhynchus vittatus Philippi, SYSTEMATICS by monotypy.

Key to the Neotropical genera of the Ocnaea branch of the Panopinae (Acroceridae) Diagnosis: Médium to large flies (8 to 16

mm. long) , black or bluish-black with yellow 1. Eyes pilóse 2 or orange markings. Eyes pilóse, antennae Eyes bare (Central America) . . Appelleia Bellardi

much longer than head height (males) , or as 2. Vein iíj present, usually complete but always with at least a basal or apical stub; wing membrane bare, long as or up to ]/¿ as long as head height or macrotrichiae and/or mi- with some, with many (females) ; ocelli present (2 or 3) median oce- crotrichiae on costal, subcostal, marginal and occasio- llus may be present and distinct or apparently nally on submarginal posterior and other cells . 3 absent; eyes narrowly separated between an- of nu- Vein R í absent; much wing membrane with distinctly merous macrotrichiae on costal, subcostal, marginal tennal triangle and post clypeus, but and/or submarginal, posterior, discal, basal, cubital separated from frons to ocellar tubercle; an- and anal cells (Brazil and Bolivia) tennae placed near but distinctly below vér- Exetasis Walker2 tex, separated from ocellar triangle and an- 3. Eyes holoptic below antennae 4 terior edge of frons by distance equal to, or Eyes at least partly and usually considerably sepa- segment I rated below antennae; antennae placed at, below greater than, length of antennal

or slightly above mideye height; antennae placed (see Figs. 2, 4, 8, 12, 14) ; clypeus present but underneath or in front of large frontal tubercle; small, prementum hardly visible: wing vena- humeral cross vein absent. (Brazil, Ecuador, Gua- tion strong, vein R branched; trichiation temala) Pialea Erichson3 4+5 of wing membrane limited to costal and sub- 4. Antennae placed high on head just in front of ocellar tubercle, or about % upon head 5 costal cells and quite faint: legs strongs, pul-

Antennae placed at or below mideye height; basal villi narrow (especially empodia) , shorter cervical sclerite hardly visible (Chile) than claw length. new genus* Distribution: The five known species are 5. Antennae placed just in front of ocellar tubercle; eyes widely separated between antennae and ocellar recorded only from Chile, and this is good tubercle: ocellar tubercle well-raised prominent evidence to support the idea that Arrhynchus lateral ocellus (California-North Carolina, south to is endemic and/or autochthonous to that Brazil Ocnaea Erichson región. Antennae somewhat lower on head with eyes more narrowly separated between antennae and ocellar Discussion: Arrhynchus is similar to Ocnaea, barely raised, tubercle; ocellar tubercle flattened or Exetasis and Pialea, and is somewhat inter- triangular with distinct or indistinct median ocellus, medíate between Ocnaea and Pialea. It is most but lateral ocellus is prominent (Chile) Arrhynchus Philippi similar to Ocnaea with which genus it had been synonymized by Stuardo (1946) without 2The genus Exetasis "Walker (1852) has been consi- stating why. The main differences between dered synonym of Ocnaea Erichson by most authors, a Arrhynchus and Ocnaea are in the placement but the significant characters given here in the key clear- of the antennae, the development of the ly indícate it should have sepárate taxonomic status. 3The genus Stenopialea Speiser from South África is ocellar tubercle and vertical áreas, wing tri- related to Pialea, but its species have a distinct humeral chiation, head shape and size of occiput. crossvein. To this monotypic genus can now be added 'This new genus from Chile is being described by the author in another paper n.ow in preparation. four additional species from Chile. These are: . .

Schlinger: Neotropical Acroceridae, part I.

Coll. Ocnaea stuardoi Sabrosky, O. meridionális (cas) ; 1 9 , same xi-20-46, E. P. Reed, (eis) 1 Sabrosky, A. penai Schlinger, n. sp. and A. (cas) ; 1 9 same, xi-29-54, L. Peña ; maculatus Schlinger, n. sp. 9 , same, x-1952 (amnh) ; 2 9 , same, 1949,

E. P. Reed, coll. (cas) ; 1 9 same, xn-1950,

(cas) 1 , KEY TO THE SPECIES OF ARRHYNCHUS L. Peña ; 9 El Manzano, Jan. 1959, PH1LIPPI5 (eis) 1 Quilpué, 1-1962, G. Monsalve, ; 9 , J.

Verguez (cuv) ; 2 á, Quebrada de la Plata, 1. Males (antenna longer than head height) . . 2 Stgo. Prov., malaise trap, 1-12-67, M. E. Irwin Females (antenna as long or shorter than head

(eis, eea) ; 1 , Viña del Mar, Valparaíso height) 3 $ Prov., x-1961, E. González (cuv) 2. Tergum metallic bluish-black with contiguous yellow, lateral spots on at least segments ii-m; Discussion: The females of this species are raesonotal pile brownish or greyish-white .... dark metallic bluish-black, but the males are vittatus Philippi somewhat less shiny and black, or sometimes Tergum more dull black or black with small, dor- with dull, orange, lateral, tergal spots on ter- sally-interrupted orange lateral spots sometimes on segments H-v; mesonotal pile black gites 11-v or on fewer segments and sometimes stuardoi (Sabrosky) the intersegmental membranes between ster-

3. Mesonotum shiny bluish-black 4 nites and tergites are also orange. This orange penai Schlinger, n. sp. Mesonotum orange .... color of the tergum is somewhat similar to 4. Tergum entirely shiny bluish-black 5 darker specimens of A. vittatus, except the Tergum with large, lateral yellow área or spots on spots in stuardoi are not contiguous in dorsal segments ii-iii or ii-iv 6 view. The antennae of the females are slightly i/ó 5. Antennal segment I nearly as long as m . . . . meridionális (Sabrosky) shorter than the head height, while in the

. . . males the i/ longer than Antennal segment I about 14 as long asm . antennae are about 3 stuardoi (Sabrosky) head height (see Figs. 6 and 12) . The wing 6. Tergum with large lateral yellow área on segments venation and trichiation pattern, are essen- ii-iv; hair on eye reaching only to apex of antennal tially the same as shown in figure 1 for macu- segment I vittatus Philippi latus n. sp. Tergum with small, but distinct yellow spots on segments m-iv; hair on eyes reaching nearly to apex The variation in the males may be normal

of antennal segment 11 . maculatus Schlinger, n. sp. for this species, or it may be that males of another species are involved here, such as me- Arrhynchus stuardoi (Sabrosky), new combi- ridionális, whose females are known likewise nation from the type locality of stuardoi.

(Figures 6, 12, 13) Arrhynchus meridionális (Sabrosky), new com- Ocnaea stuardoi Sabrosky, 1946: 191-194, binaron

Figs. 1-3. (Figures 4 and 5) Specimens examined: (10 males, 14 fema- Ocnaea meridionális Sabrosky, 1946: 194-195, les) all from Chile. Fig. 4. Type Specimens: $ Holotype, El Canelo, Specimens examined: (2 females) xn-13-1932, C. Stuardo (cnhm) ; 2 S and 1 Type Specimen: 9 Termas de Chillan, Chi- 9 paratopotypes; 1 3 ix-20-38; 1 $ and 1 le, Feb. 2, 1935, C. Stuardo (cnhm) . 9 , xi-38, C. Stuardo (cnhm, usnm) ; 1 $ pa- New record: 1 9 , El Canelo, Santiago, Chi- ratype, Las Condes, Jan. 1889 (?) (cnhm) ; le, Nov.-Dec. 1952, Ramírez (lp) . 1 5 paratype, ex-col. Omel (cnhm) . 1 9 Distribution: This species is now known allotype, topotypical (cnhm) . only from the 2 females cited here, henee the New Records: 1 $ Guacayan, Santiago, species still appears to be rare and restricted xn-2-52 (lp) ; 2 9 El Canelo, xn-29-50, L. E. to Chile. Peña, (lp) ; 1 $ same, xi-26-44, Ramírez, Discussion: The holotype was examined

is perfect BMales are unknown for meridionális, penai and and in condition. The new speci- maculatus. men from El Canelo is certainly conspecific, Rev. Chil. Ent. 6, 1968

Arrhynchus species

^ W

7 rn 8 ;

Schlinger: Neotropical Acroceridae, part I.

but is much smaller. The squamae are slightly as length of antennal segments i -)- u; that more infuscaled and the 2nd posterior cell is on upper humerus, mesonotum, light spots open rather than closed and petiolate as in on upper mesopleura and scutellum dense and the type. orangish-yellow, about same length as on eyes;

This species is dark metallic bluish-black that on abdominal terga black, somewhat throughout the entire body. It is similar to A. shorter than on eyes; that on abdominal ster- stuardoi, but is easily distinguished by its na and most of femora black, and about Yz short antennae, which are about i/> as long as as long as on eyes; that on tibiae and tarse con- in stuardoi témales. The wing venation is si- colorus with segments, appressed, much shor- milar to maculatus as shown in fig. 1, and the ter than on femora than on squama, yellowish- head, vértex and antennal characters are white, more sparse than and y¿ as long as on shown in Figs. 4 and 5. scutellum; dense, microscopic, golden setae present throughout lower pleural área, occiput Arrhynchus penai Schlinger, new species and anteroventral margin of abdominal ter-

(Figures 1, 2, 3) gite i. Head about twice as high as long (Fig. Holotype Female: Length of entire specimen 2) ; antenna about as long as head length; 10 mm., wing length 8 mm. segments i and n short, segment m long, as 6: Coloration: Bluish-black, orange and brown. 4:40; segment m nearly straight, narrow outer Brown are apex of antennal segment h, all margin incised longitudinally throughout o£ segment ni, indistinct spots on humerus, most of its length (except base and apex) and upper mesopleura, área anterior and basal to segment atennuates apically; entire segment metathoracic spiracle, área immediately below asetate except setae present on outer basal wing base, mediobasal área of postalar callus, área: base of antennae separated from lateral squamal margin, wing veins, knees, tibial ocellus by distance equal to lengths of an- spurs, anterior tarsus parts of genitalia; and tennal segments i -4- u; ocellar tubercle hardly orange are most of humerus, all of mesono- raised, lateral ocellus small but evident, me- tum, most postalar callus, anterior angle of dian ocellus absent; frons small, hardly raised; scutellum; somewhat darker orange are three occiput (when viewed laterally) oceupies mesonotal vittae; white are pulvilli, squama more than 1/3 of head length at mid-line; and ocelli; dark brown are mid- and hind tar- clypeus indistinct but present as small protu- si and parts of abdominal sterna; black are berance between margins of postclypeus; pre- eyes, antennal segment i, basal part of seg- mentum indistinct but present; eyes separated ment ii, occiput, ocellar tubercle, clypeus and by indistinct line from antennal triangle to tarsal claws; halter dull dark brown, the stem postclypeus, more broadly separated between base lighter brown; remainder of specimen frons and ocellar tubercle as in Fig. 3. bluish-black. Pile: Brownish-black and dense on eyes, Thorax shiny; humerus with short but dis- occiput, coxae, base of humerus, mid-meso- tinct posterodorsal facing angle; scutellum pleural área, hipopleura and about as long about twice as wide as long; legs each with one short tibial spur, short hairs covering en- EXPLANATION OF FIGURES tire basal 2/3 oí tarsal claws; squama opaque, Figures 1, 2 & 3 Arrhynchus penai Schlinger, holo- densely covered with minute hairs as well as type figs. 4 & 5 Arrhynchus meridionalis (Sabros- 9; longer pile; wing venation somewhat reduced, figs. ky) , holotype 2 ; 6, 12 & 13 Arrhynchus stuardoi with R i + 5 incomplete but branched as in fig. (Sabrosky) , 6 and 12 paratype 5,13 paratype 9 ; figs.

; faintly inf 7, 8 8: 9 Arrhynchus maculatus Schlinger, holotype 2 1 wing membrane hyaline, uscated. figs. 10, 11 & 14 Arrhynchus vittatus Philippi, holotype 2. Abdomen shiny (but greasy) ; tergite i shor- Figures 1, 9 & 10 wings; figs. 2, 4, 6, 8, 12 & 14 ter than tergite u in midline as 10:40, tergites heads in lateral view; figs. 3, 5, 7, 11 & 13 ocellar tuber. in-v equal in length to n. ele and frons in dorsal view. 52 Rev. Chil. Ent. 6, 1968

Male: Unknown. minal spots; that on squama sparse, light brown, about 14 as long as that on scutellum.

Type Material: Holotype $ , El Canelo, Head higher than long as 40:25, as wide as

Santiago Prov., Chile, n-10-1958 (G. Monsal- high (Fig. 8) ; antennae longer than head

ve) , and one 9 paratopotype. Another 9 exa- length as 33:25; segments 1, 11 and ni as 6:3:24: mined which is certainly conspecific, but not segment m asetate, longer than wide as 24:6. topotypic is from El Pufon, Curico Prov., Chi- with several, thin, irregular longitudinal gro-

le, Julio Saa J. (cíe) . oves and 6 to 8 distinct but small sensory pits on each ventral surface; base of antennae sepa- Discussio?i: The paratopotype female diífers rated from lateral ocellus by distance equal to

obviously from the holotype only as follows: length of antennal segments 1 —)— 11; ocellar tu- Antenna (one absent) somewhat more orange bercle slightly raised triangular, cleft medially; on segment m, and orange color of humeras lateral ocellus distinct, median ocellus absent; and upper pleural área more extensive; an- frons small, raised medially; occiput (in late- tennal segment m without setae at outer base. ral view) occupies about of length; cly- ys head This striking orange and blue acrocerid peus very small but present anteriorlly bet- fly is perhaps a mimic of some as yet unknown ween margins of postclypeus; prementum pre- model such as a bee. The only other species of sent but hardly visible; eyes indistinctly sepa- the genus with similar color (but completely rated from postclypeus to antennae, narrowly different pattern) is A. vittatus. separated between frons and ocellar tubercle

It is with great pleasure that I ñame this as in Fig. 7. species after my friend, Señor Luis E. Peña Thorax shiny; humerus with short, slightly Guzmán, a great Chilean naturalist and an pointed posterior-facing angle; scutellum more excellent collector of rare Acroceridae. than twice as wide as long as 52:22; legs each with one short tibial spur, but foreleg with in- Arrhynchus maculatus Schlinger, new species dication of 2nd spur; short hairs covering ba-

(Figures 7, 8, 9) sal I/2 of tarsal claws; squama opaque, heavily infuscated, densely covered with minute hairs Holotype Female: Length of entire specimen as well as long pile; squamal rims heavily in- 8 mm., wing length 8 mm. fuscated; wing venation as in Fig. 9; wing membrane hyaline, but evenly and well infus- Coloration: Metallic blue, black and oran- cated. ge. Black are eyes, antennae, halters and tar- Abdomen: Shiny, widest at segment ni. sal claws; orange are lateral abdominal circu- Male: Unknown. lar spots covering posterior one-half of tergite Type Material: Holotype $ , Cuesta Puca- n and nearly all of posterior margin of ter- lan, Valparaíso Province, Chile, ix-15-1966, gite ni pulvilli greyish-black; ; and squama E. I. Schlinger, M. E. Irwin (eea) . This spe- small brown spot anterior to ovipositor; rema- cimen was reared from an immature thera- inder of specimen metallic blue, except most of phosid spider collected along with 15 other legs with considerable black color as well. theraphosid spiders under rocks on the east Pile: Black and dense on eyes, legs, pleurae, side of the pass on September 15, 1966. These humeri and few on abdominal venter about as spiders were kept alive and reared in the labo-

long as length of antennal segments 1 and 11, ratory at the Estación Experimental Agronómi-

much shorter on tibiae and tarsi; greyish-white ca in La Rinconada, Chile, until January 2, and dense on mesonotum and scutellum, mi- 1967, when I first noticed the mature larva of xed with some black on latter, somewhat lon- this fly inside a vial next to the dead host ger than on eyes; that on scutellum longer spider. At that time, the larva was in the spi-

than on mesonotum; that on abdomen white der's premoulting web and that is where it mixed with brownish-black, rather dense and pupated on January 5. It emerged from its pu- about as long as on eyes except for much shor- pal skin on January 16 and died on January ter yellowish-brownish pile on orange abdo- 22 without producing any eggs. The life stages ;

Schlinger: Neotropical Acroceridae, part I. 53

iv-vi, all about as long as length of of this fly will be reported in a forthcoming of tergites that on ocellar paper by the author. The rearing record for antennal segment 1, except pleurae, humerus, postalar this particular fly was 4= 29A in my field no- tubercle, coxae, longer; light tebook. callus and abdomen somewhat Host spider: An immature Theraphosidae; brownish-white and dense on mesonotum, squama and remainder of abdomen, probably Phríxotrichus rosens (Guerin) . scutellum, somewhat longer than that on eyes, except Arrhynchus vittatus Philippi mostly shorter along tergal margins; that on dense, short, almost (Figures 10, 11, 14) tibiae and tarsi more appressed and dark blackish-purple. Arrhynchus vittatus Philippi, 1871: 291-292; Head higher than long as 20:14 (Fig. 14)

Reed, 1888: 288; Hunter, 1901: 152; Kertes'z, antennal segment 1 longer than 11 as 5:3 (seg-

1909: 11. ment ni absent) ; base of antennae separated from lateral ocellus by distance equal to three ocellar Type Specimen: 2 , Chile. There are three times length of antennal segment 1;

labels 011 the type specimen. 1) a white label tubercle nearly fíat, lateral ocelli distinct, me-

with what looks like "chonulagui"; 2) a blue dian ocellus present but indistinct; frons label with "Arrhynchus vittatus Ph., p. 1536, small, hardly raised; occiput (when viewed the of head length 1870, Medina"; and 3) a red label with laterally) occupies less than y3 word "Holotipo". Philippi (1871) stated the at mid-line; clypeus indistinct but present, not type was from Santa Cruz, Curico Province, projecting beyond margin of postclypeus in

Chile, but this label is not on the holotype lateral view; prementum indistinct, but pre- specimen. sent; eyes separated by indistinct line between Discussion: This species was described by antennal triangle and postclypeus, and narro- Philippi from a unique female. Since the spe- wly separated between frons and ocellar tu- cies has not been noticed since 1871, and since bercle as in Fig. 11.

it has been placed in the genus Ocnaea by Thorax shiny; humerus with small postero-

Stuardo (1946) , a redescription of the type 5 dorsal angle; scutellum little, more than twice and of 6 additional males is given to better as long as wide as 25:10; each tibia with short clarify the position of this species. but distinct tibial spur; short hairs cover basal i/ claws; squama infuscated, semi- 3 of tarsal Redescription of the Holotype. transparent, without small hairs, only sparse

pile; wing venation with i? 4 + 5 branched as in Female: Length of entire specimen 12 mm., Fig. 10; wing membrane hyaline, faintly in- wing length 9 mm. fuscated. Coloration: Brownish-purple, yellow, black and bluish-black; yellow are broad lateral Abdomen: Shiny, widest at segment m. áreas of tergites 11-iv; black are eyes, ocellar tu- Male: Same as female except as follows:

bercle, frons, occiput, antennal segment 1 and brownish-purple áreas mostly bluish-black

clypeus; brown are antennal segment 11, ocelli, except sternites i-v and postalar callus; yellow squama, squamal rim, wing veins, tarsal áreas of abdominal tergites reach laterally less claws (except black tips) ; bluish-black are from margin nearly to mid-line or reach margins of scutellum, mesonotal disc and broad than i/2 way to mid-line, occupying only ter-

median vitta reaching to anterior margin of gite ii-ni or n-v; tergites 1 and vi always, and v mesonotum; pulvilli are light brown; remain- usually bluish-black; wing membrane some-

der of specimen is brownish-purple except for what less infuscated, veins somewhat lighter tibiae and tarsi which are more blackish-pur- brown; squama white, somewhat less transpa- ple. rent; antennal segment n black, segment 111 Pile: Brownish-purple and dense on eyes, black dorsolaterally and black or brown in- occiput, ocellar tubercle, femora, pleura, hu- teroventrally; length of segments 1, 11, 111 as merus, postalar callus, brownish-purple áreas 10:4:95 to 11:5:75; antennal base much closer 54 Rev. Chil. Ent. 6, 1968 to ocellar triangle, and separation between eyes Hunter, W. D. 1901. Catalogue of the Díptera o£ South at this área is farther apart; head about twice America, Trans. Amer. Ent. Soc, 27: 121-155. as high as long; median ocellus barely indi- Kertesz, C. 1909. Catalogus dipterorum hucusque des- cated. criptorum 4: 11, Lipsiae, Budapestini.

New distributional data: 6 $ $ , all from Phiuppi, R. A. 1871. Bechreibungeiniger neuer chile-

Chile as follows: 1 á » Fundo Noruega, ix-23- nischer Insecten, Stett. Ent. Zeit., 32 (7-9) : 291-

292, pl. 3, fig. 6, 6a. 40 (cnhm) ; 1 á , Provincia O'Higgins, 1-1955

(lp) ;1 á, Cuesta Chac. (= Chacabuco) , ix- Reed, E. C. 1888. Catálogo de los Insectos Dípteros 29-1913 (cnhm); 1 $ , San Cristóbal, Santia- de Chile, An. Univ. Chile, 73: 271-316. go, n-23-1947, L. E. Peña (lp) ;1í, Llay-Llay as "Vay-Vay", 420 mt's, ix-5-1949, Kuschel Sabrosky, C. W. 1946. In Stuardo, Catálogo de los

(cnhm) , and 1 $ , Quebrada San Jerónimo, Dípteros de Chile. Two new species of Ocnaea from Valparaíso Prov., no date, Montes collector Chile, pp. 190-195, figs. 1-4.

(cíe) . Schlinger, E. I. 1961. A review of the Acroceridae of Apparently this is still a rare species in Madagascar, Mém. l'Inst. Scient. Madagascar, Serie Chile. We did not see any specimen during our E. vol. 12: 257-267, figs. 1-8. 8-month field expedition, and the only speci- 1968. Africaterphis, a new genus for the African men I know anything about environmentally species of Terphis; and a redescription of the Bra- is the one cited above collected in O'Higgins zilian genus Terphis Erichson. Ann. Natal Mus. Province, which Señor Peña said he had (in press) . picked off the radiator of his truck. Stuardo, Carlos. 1946. Catálogo de los Dípteros de REFERENCES CITED Chile, pp. 7-250. Imprenta Universitaria, Santiago.

Edwards, F. W. 1930. Díptera of Patagonia and South Walker, Francis. 1852. Díptera, Vol. 1, In Insecta "1856", Chile. Part v, Fase, 2, pp. 187-197 (Cyrtidae) . Brit. Saundersiana, W. W. Saunders Ed., London, Museum, London. pp. 202-203, pl. 5, fig. 1.