First record of the frog parasite genus Batrachomyia Krefft from New Guinea (Diptera: Chloropidae) Evenhuis, Neal L. Zootaxa 2006 1351 53 59 KZJ6 Evenhuis Evenhuis [264,643,1756,1782] Insecta Chloropidae Batrachomyia Animalia Diptera 1 54 Arthropoda species krausi sp. nov.    Typematerial:  Holotype(Ento. BPBM16,668) and 2  paratypesof third (final) instar larval specimens from:  Papua New Guinea: Fergusson Island: Oya Tabu [= Mt. Kilkerran], 900–1000 m, [ 9.45ºS, 150.78ºE], 20–24 Aug 2002, F. Kraus et al., collectors (Vert. BPBM16339). Other paratypes: 3 third (final) instar specimens, topotypic, same data as holotype(Vert. BPBM16341); 2 third (final) instar specimens, topotypic, same data as holotype(Vert. BPBM16337). Holotypedeposited in BPBM; paratypesin AMS and BPBM.   TABLE 1.Known hosts of Batrachomyia.   Batrachomyiaspecies Frog species Family Country  Uperoleia laevigataKeferstein Myobatrachidae Australia      krausi,  sp. nov.   Sylvarana supragrisea(Menzies)  Ranidae Papua New Guinea    mertensiLindner  Litorea caerulea(White)  Hylidae Australia   nigritarsusSkuse  Litorea phyllochroa(Günther)  Hylidae Australia    quadrilineataSkuse   Pseudophryne bibronii(Günther)  Myobatrachidae Australia    strigipesMalloch   Uperoleia marmorataGray  Myobatrachidae Australia sp.  Crinia signiferaGirard Myobatrachidae Australia   Geocrinia laevis(Günther) Myobatrachidae Australia    Geocrinia victoriana(Boulenger) Myobatrachidae Australia   Heleioporus albopunctatusGray Myobatrachidae Australia  Litorea citropa(Duméril & Bibron) Hylidae Australia  Litorea infrafrenata(Günther) Hylidae Australia   Pseudophryne corroboreeMoore Myobatrachidae Australia   Pseudophryne dendyiLucas Myobatrachidae Australia   Pseudophryne pengilleyiWells& Myobatrachidae AustraliaWellington  Larval Description. Length: 12.5–16.9 mm(n = 8). Greatest width (at level of segments 5 and 6): 5.0–6.0 mm. Body generally depressedly fusiform, tapered somewhat similarly at each end; lateral edges (when viewed dorsally) somewhat serrate in shape as a result of the general triangular shape of segments 3–9. In lateral view, larva flat on ventral surface, dorsal surface markedly convex with greatest girth and width at 5th and 6th segments. Head retracted into thorax leaving small visible cervical membrane anterior to anterior spiracles, mouthparts situated on ventral surface. First segment with spiracles on tentacle-like anterior respiratory processes. Anterior respiratory processes porrect, each tapering to blunt apex, constricted slightly subapically. Segments 2–10 with paired tubercles on tips of lateral processes; segments 2–10 dorsally each with three welt-like swellings: one medial bearing two small tubercles, one each admedianly bearing single small tubercle. Ventrally, segments 2–10 each with medial patch of dense microspicules ( Fig. 5). Last segment with posterior spiracles borne on paired respiratory processes. Each process small and tapered to apex. Posterior spiracles each with three oval-shaped openings surrounded by a ridge.   Remarks. Adults have not been associated with the larvae, but the porrect anterior respiratory processes ( Figs. 1, 3) (directed caudally or decumbent in other  Batrachomyiaspecies, cf. Figs. 2, 4) the distinctive triangular shape (when viewed dorsally) of the lateral portions of the abdominal segments with the presence of tubercles laterally on each segment (absent in Australian  Batrachomyiaspecies), and the ventromedial patches of dense microspicules ( Fig. 5) (these segments each with single row of small blunt spinules in  Batrachomyia, cf. Fig. 6) are unlike any other described species known and give me no hesitation in describing this species as new. Its large size (largest specimen 16.9 mm) is larger than the recorded larval length in other described  Batrachomyiaspecies but I have seen larval specimens of an undescribed species from Australiain AMS with specimens of a similar size, so this in itself may not be of any significance.   FIGURES 3–4.  Batrachomyialast instar, dorsal view. Detail of anterior portion of larva. 3.  B. krausi, sp. nov. 4.  B. nigritarsis. Abbreviations. ar = anterior respiratory process; t = tubercle; dw = dorsal welts.   FIGURES 5–6.  Batrachomyialast instar, ventral view. Detail of anterior portion of larva. 5.  B. krausi, sp. nov., showing medial patches of microspicules on segments. 6.  B. nigritarsis, showing medial row of small spinules on segments. It is hoped that future collections can be made in the same general area to search specifically for adults but it is highly improbable that this specific area will be searched again for many years due to logistical difficulties. The frog species (  Rana supragrisea) is fairly widespread on Fergusson Island but parasitized specimens were found only in the one specific area given above. A total of 16 frog specimens ( 7 malesand 9 females) were found by Kraus to be parasitized. Only 3 of the frogs were dissected to obtain larvae for the typeseries. The rest of the parasites remain in situ. All larval parasites were found on the sides of the frogs in front of the hind legs.   Etymology. The specific epithet honors the primary collector of the species, Dr. E. Frederick Kraus. It has been pointed out to me that it is extremely unlikely that he will ever get something named after him, so I might as well do it now.   Distribution: Known only from Fergusson Island, Papua New Guinea.