S. Mahunka szerk.: Folia Entomologica Hungarica 34/2. (Budapest, 1981)
FOLIA ENTOMOLOGICA HUNGARICA ROVARTANI KÖZLEMÉNYEK XLII (XXXIV) 2 1981 p. 143-154 New species of the Paralimosina beckeri-group from the Canary Is. (Diptera: Sphaeroceridae) By L. PAPP and J. ROHÂCEK (Received August 1. 1981) Abstract. - Four new species of the Paralimosina beckeri-group (P . anaptera sp.n., P. franzi Bp.n., P. gomerensis sp.n. and P. pilifemorata sp.n.) are described from the Canary Islands (Tenerife and La Gomera) with the differentiating characteristics of this species-group. With 23 figureB. The genuB Paralimosina was described by L. Papp (1973) for a single Mongolian species, viz. P. kaszabl L. Papp, 1973. The recent re-examination of the type-material of this species (deposited in HNHM, Budapest) resulted in a finding that it actually belongs to the Limoslna fucata-group sensu ROHÁCEK (1977). Since this species-group is homogenous and well characterized, we consider it a distinct genus for which the name Paralimosina L. Papp, 1973 is to be used. There 1B, however, another Palaearctic species: Limosina beckert Duda, 1918 not placed into the L. fucatagroup by ROHÁCEK (1977) but showing affinities to Paralimosina. at least in some external features (wing, chaetotaxy of middle tibia, sclerotization of abdomen). Through the courtesy of Prof. H. FRANZ (Wien) we had the opportunity to study some material of brachypterous species of the Limosina-complex from the Canary Islands, together with specimens of L . beckeri . Until now no brachypterouB Sphaerocerid has been reported from this area (cf. FREY, 1936, HACKMAN, 1958, PAPP, 1977); i.e. these specimens should belong to new species. After dissecting the male genitalia of these specimens we recognized that there are five species in the material; all of them are undoubtedly closely related to Limosina beckeri.Since this species-group seems rather closely related to Paralimosina in the above sense, we propose to place them into this genus but only tentatively; the beckeri-group seems rather distinct and shows significant differences when comparing with the Limosina fucatagroup sensu ROHÁCEK (1977). The Paralimosina beckeri-group can be characterized as follows: 1/ pvt bristles absent, 3(4) pairs of if, middle pair extremely long; 2/ very long vti pair, comparatively very long occe and ceci pairs (the latter pair almost cruciate); 3/ genal bristle rather strong, proclinate and not upcurving, in peristomial position; 4/ thoracic chaetotaxy: 1 h, 2 np, 1 prst, 1 short + 1 long sa, 1 short pa (or 1 short sa and 1 long + 1 short pa), 2 dc (also anterior dc very long), no prsc, 2 sc, 1 st pairs of bristles; scutellum only 2/3 as long as wide; 5/ chaetotaxy of mid tibia: two groups of bristles on dorsal side: the proximal one is consisting of 3 bristles (2 ad, 1 pd), distal group of 3-4 bristles (1 ad, 1-2 d, 1 pd); no mid av, ventroapical alwayB present but often reduced in males; male mid tibia sometimes with a row of short ventral spines; 6/ wings normal or very much reduced, no haltères In brachypterous forms, costal vein not extending beyond r 4+5. r 4+5 sinuate In fully-winged forms, discal cell (If any) broad; 7/ abdomen convex, terga strongly chitinized, abdominal sterna wide, lateral margins almost reaching terga in both sexes; 8/ male 5th sternum with a weakly sclerotized posteromediaUobe carrying a pair of medial setae and with at least several thick short spines (often forming a characteristic row or groups)
