A new species, Cydistomyia kamialiensis, is described from specimens collected in the Kamiali Wildlife Management Area of Morobe Province, Papua New Guinea

Goodwin, James T.

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INSECTA MUNDI, Vol. 13, No. 3-4, September-December, 1999  235 A new species of Cydistomyia (Diptera, Tabanidae) from Papua New Guinea James T. Goodwin Jarvis Christian College P.O.Box 1470 Hawkins, TX 75765-9989 Abstract.  A new species, Cydistomyia kamialiensis, is described from specimens collected in the Kamiali Wildlife Management Area of Morobe Province, Papua New Guinea. Introduction Mackerras (1964) included the tabanid fauna of Papua New Guinea in his coverage of the fauna of the Papuan (New Guinea) Subregion, an area en-compassing the entire island of  New Guinea as well as the smaller islands lying approximately between 0° and 12° S.latitude and 129° and 1550 W.longitude. Additional information on the tabanids ofthe subre-gion appeared in two shorter papers (Mackerras 1971, 1972). A few subsequent papers covering the fauna of  other parts ofthe Australasian and Ocean-ian Regions were found, and some included taxo-nomic  changes  affecting generic and sub  generic names of species found in the Papuan Subregion. These changes were summarized by Daniels (1989) who provided the most current faunal list of  Tab  an-idae for the Australasian and Oceanian Regions. In addition, Chainey (1988), which was not mentioned by Daniels (1989), included the description on a new species, Lilaea (Cyanolilaea) ismayi Chainey, from Papua New Guinea as well as revisionary changes affecting names of other species from the Subre-gion. The new species described below is named for the Kamiali Wildlife Management Area in Morobe Province, Papua New Guinea. Commonly referred to as just Kamiali, the wildlife management area, has a marine and land surface area of at least 342 km2 (possibly as much as  434 km  2)  within the boundaries of the Lababia Village land area. It is located approximately 60 km SSE down the Huon Gulf coast from the provincial capitol of Lae. The land area of 269 km2 is covered by predominantly pristine coastal rain forest on the surfaces of  moun-tains and ridges ranging from sea level to a little above  2,000  m.  The  people  of Lababia  and the smaller villages of the Kamiali have made the deci-sion to set aside most of the area as  a  wildlife management area rather than sell timber rights to private companies. They hope in this way not only to conserve their forest holdings for their descen-dants but also to derive income from activities for which  the  Kamiali  will  be the  attracting force. Activities planned include hosting training work-shops, supporting visiting scientists interested in studies of the biota of the area, and ecotourism. They have been assisted in these endeavors by the Village Development Trust (VDT) , a  non-govern-mental organization with offices in  Lae. Guest hous-ing,  dining facilities,  and a  training center have been constructed,  and the first training courses were carried out in late 1997. In addition, in early 1997, VDT entered into an agreement with the Environmental Research and Management Centre (ERMC)  of the Papua New Guinea University of Technology in Lae to initiate an inventory of the biodiversity of the Kamiali and to train some of the villagers to work with visiting scientists and to serve as guides. I was fortunate to be one of the scientists asked to participate in these studies. I was warmly received by the villagers and received extremely good support during all my vis-its,  an extremely important parameter for  field research in Papua New Guinea. Unlike most other countries of the world,  close to  95%  of the land resources of the country are tribally held, but own-ership is never a clear matter. Obtaining permis-sion to collect in an area is difficult at best, and security for oneself and one's equipment is far from guaranteed. As a consequence, being not only invit-ed to collect in the Kamiali, but also being given tremendous support while collecting, will always be rememberedwith pleasure. It  is for this reason that I have elected to name the species described herein in honor of the area, its history, and its people. I  also recommend to others interested in the biota of Papua New Guinea that they consider the Kamiali as an area for investigation. Information can be obtained andlor arrangements made by con-236  Volume 13, No. 3-4, September-December, 1999, INSECTA MUNDI Figure  1.  Cydistomyia  hamialiensis  Anterior  view (photograph) of  head to illustrate frons ofholotype female. tacting the Village Development Trust, P. O.  Box 2397, Lae, Morobe Province 411, Papua New Guin-ea, telephone 675-472-1666, telefax 675-472-4824, e-mail  vdt@global.net.pg, web at  www.global.net.pf/ vdt. Cydistomyia kamialiensis new species Description: Holotype female: A vivid golden-yel-low and black species with emerald green eyes and wings intensely and darkly infuscated except along posterior border.  Length 11  mm;  wing 10.5  mm long. Head: Eyes unicolorous dark, emerald green; frons (Figure 1) nearly parallel-sided, golden yellow pollinose  with  scattered  blackish  brown  hairs throughout except for the large shining callus; cal-lus narrowly separated from eyes by pollinose re-gion, extending from subcallus to just above mid-point of frons,  widest basally and progressively narrowed dorsally over basal two-thirds and then sharply constricted to  pointed apex;  callus dark blackish brown over upper three-fourths to four-fifths, orange-brown  below; sub  callus bare and  shin-ing orange-brown, a little lighter in color than basal area of callus; parafacials and face golden yellow pollinose with rather sparse black and golden hairs, the black hairs more prevalent near eyes; antennae (Figure 2) orange-brown, thinly pollinose, scape and pedicel with moderately abundant short  black  hairs, Figures 2·3. Cydistomyia hamialiensis 2. Diagram of  the antenna of holotype female; 3. Diagram of palp of female holotype. third segment  with a tuft  of  short  black hairs on tooth and scattered  black hairs on annuli; dorsal excision of plate rather shallow; palpi (Figure 3)  sub-shiny, black, with dense black hair, hairs shorter on second versus basal segment; second palpal segment about equal in length to entire antenna. Thorax: Ground color of thoracic dorsum, in-cluding scutellum, shiny blackish-brown, but dark color entirely obscured by dense golden yellow pol-linosity (NOTE: ground color based on color of shiny non-pollinose areas in middle and at tip of scutel-lum due to rubbing in the killjar; entire dorsum of thorax and scutellum of type pollinose at time of collection);  dorsum with  a  mixture of scattered, elongate golden and black hairs; upper half  ofpleu-ra concolorous with dorsum, with rather dense tufts oflong golden hairs below wing  bases anteriorly and posteriorly; lower half of pleura and venter shiny blackish-brown;  legs  shiny blackish-brown  with black hairs, the only slightly paler areas being the joints at the proximal and distal ends of the tibiae and the pulvilli.  Wing (Figure 4; wing of paratype used so as to leave holotype intact) intensely infus-cated dark brown to blackish throughout except for clear posterior zone originating in cell 1'4  where it occupies most of the apical half of the cell (but not reaching anteriorly to vein R4)  and extends towards body in a  progressively narrowing strip through cua! and then abruptly expands to include much of the anal area. Abdomen: Ground color dorsally primarily or-ange brown; first tergite entirely orange brown but very  slightly  darkened  posterolaterally;  orange brown area progressively narrower on tergites II-V and confined to a small median basal area on tergite VI; remaining areas of dorsum shiny dark brown to INSECTA MUNDI, Vol. 13, No. 3-4, September-December, 1999  237 black; hairs mostly dark regardless of ground color; laterally on the first sternite just  behind the halter-es, there is a conspicuous golden-yellow pollinose and golden haired extension from  the  similarly colored band occupying the upper half  of  the pleura; ground color  ventrally a  brighter orange brown than dorsally, occupying the middle halves of ster-nites I-IV, middle third of sternite V,  and less of sternite VI; remaining areas shiny dark brown to black; hairs generally concolorous with ground col-or. Variation: Three female specimens were collected. Observed variations  as follows:  one paratype is approximately 0.5 mm shorter than the holotype, the other less than 0.5 mm longer;the orange brown of  the venter ofthe abdomen ofthe holotype is more sharply delimited by the dark lateral areas than in the paratypes; otherwise all three specimens are similar. Locality data: Holotype: Mountain rain forest, 50-250 m.,1-3 km W of Lababia, Morobe Pr., Papua New Guinea, 20-22 X 1997, J. T . Goodwin; Paratypes (2): Walking trail just W of Kamiali Training Cen-ter,  10-150 m,  nr Lababia, Morobe Prov.,  Papua New Guinea, 16-19 Feb 1998, J. T. Goodwin (1) and Mountain rain forest, 50-250 m.,1-3 km W of Laba-bia, Morobe Pr., Papua New Guinea, 12-14 VI 1997, J. T. Goodwin (1). Identification: Although Mackerras (1971, 1972) include descriptions of species of Cydistomyia Tay-lor, none is closely similar to the species described here. Consequently, Mackerras (1964) includes the most recent key to the fauna of the New Guinea Subregion.  In the initial key to  Cydistomyia  in Mackerras (1964, p.  112), the genus is separated into three species groups.  One, the basifasciata group, has been returned to generic status as the genus Chasmia Enderlein (Daniels 1989).  Of the two remaining  species groups, C. kamialiensis would key to  the albithorax group.  In the key to the albithorax group (p. 131), it would key to C. imitans Oldroyd in couplet 1. In the description of C. imitans Oldroyd provid-ed by Mackerras (1964, p. 136), he makes reference to a New Caledonian species, C. colasbelcouri Mack-erras and Rageau, noting that C. imitans is distin-Figure 4.  Cydistomyia hamialiensis. Wing (photograph) offemale paratype. guished  from C. colasbelcouri by having a pale callus, a shining  subcallus, orange antennal segment 3, and brown  abdomen. Examination  of  specimens of both C. imitans and C. colasbelcouri confirmed these differ-ences. Cydistomyia kamialiensis differs from C.  imi-tans and C.  colasbelcouri as follows: the pleura are densely golden pollinose and concolorous with the meso  no  tum, there are distinct tufts of long golden hairs below the wing bases anteriorly and posterior-ly, and the lateral margins oftergite one are densely golden pillinose and concolorous with the pleura, whereas, in C.  imitans and C.  colasbelcouri,  the pleura are dark brown and contrasting with the golden colored mesonotum, the hair tufts below the wing bases are predominantly brownish, and the lateral areas of the first tergite are dark brown. Literature cited Chainey, J. E. 1988. A review of the genus Lilaea Walker (Di ptera: Tabanidae)  .Invertebrate Tax-0nomy 2:749-753. Daniels, G. 1989. Family Tabanidae, pp. 277-294. In: N. L. Evinhuis (Ed.) Catalog of the Diptera of  Australasian and Oceanian Regions. Honolu-lu and Leiden: Bishop Museum Press &  E. J. Brill. Mackerras, I. M. 1964. The Tabanidae (Diptera) of New Guinea. Pacific Insects 6:69-210. Mackerras, I. M.  1971. Papuan-Melanesian Di-achlorini (Diptera: Tabanidae). Pacific Insects 13:405-427. Mackerras, I. M.  1972.  Melanesian-Pacific Ta-banus  (Diptera:  Tabanidae).  Pacific  Insects 14:133-149. 

A new species of Cydistomyia (Diptera, Tabanidae) from Papua New Guinea

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