Ancylorhynchus feijeni Londt 2011, sp. n.
Creators: name: Londt, Jason G. H.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Ancylorhynchus
Ancylorhynchus feijeni

description: Ancylorhynchus feijeni sp. n.   Figs 6, 36, 75–77, 150  
Etymology: Named for Dr Hans Feijen who made important collections of Diptera in Mozambique and who collected the holotype specimen.  
Description:  
 Male (based on holotype. Condition: Excellent; right antenna broken off beyond pedicel).   
 Head: Mainly orange, fine silver-gold pruinose, pale yellow, orange and red-brown setose. Antenna (Fig. 6): Scape and pedicel orange, scape orange setose, pedicel with few yellowish setae dorsally, postpedicel orange proximally becoming orange-brown distally, tipped with obliquely situated pit-enclosed spine-like sensory element (terminal stylus ‘segment’ absent). Segmental ratios: 1:0.3:5.8. Face orange, strongly silver-gold pruinose, mystax shiny orange occupying ventral ½ of face. Frons and vertex orange, fine silver-gold pruinose, pale yellow setose; ocellar tubercle ventrally red-brown, fine pale yellow setose (no macrosetae). Occiput mainly orange (dark red-brown around cervical region) fine silver-gold pruinose, orange setose. Palpus orange, orange and red-brown setose, terminal palpomere swollen, apex with terminal sensory pit. Proboscis orange proximally dark red-brown distally, red-brown setose.   
 Thorax: Dark red-brown to blackish with orange areas dorsally and laterally, fine silver-grey pruinose, white and pale yellow setose. Prothorax blackish laterally orange dorsally, fine silver-grey pruinose, pale yellow and orange setose. Mesonotum orange except for blackish markings (medial stripe from anterior margin to just short of posterior margin; pair of transverse marks just anterior of transverse suture that fail to reach lateral margins or medial stripe; pair of longitudinal marks posterior of transverse suture that commence at posterior margin but do not reach transverse suture), fine silver-grey pruinose, fine pale yellow and reddish setose. Mesonotal macrosetae (orange when present): dc weak reddish posterior to transverse suture, 2 npl, 0 spal, 1–2 pal. Scutellum entirely orange, fine silver pruinose, disc sparsely red-brown setose, hind margin apparently without apical setae. Pleura mostly blackish except for posterior half of anepst and most of anepm and ktg entirely silver-grey pruinose, orange and dark red-brown setose (confined to anepst, kepst and ktg). Anatg orange mes pnot blackish and contrasting with orange scutellum. Legs: cx orange and red-brown, silver pruinose, white to pale yellow setose; tro orange (tro 2 with short black setae ventrally); fem, tib and tar orange except for red-brown terminal tarsomeres, mainly yellowish setose (few dark red-brown setae on tar), claws dark red-brown with orange proximal parts. Wings (Fig. 36, paratype): 8.9× 3.8 mm. Veins mostly dark red-brown. Membrane extensively microtrichose (some proximal cells partly bare), mostly brown but with orange patches. Haltere brown-orange.   
 Abdomen: Predominantly blackish with orange to orange-brown patches, fine silver pruinose, pale yellow setose. T1 blackish with feint brownish marks laterally; T2–4 blackish with large orange posterolateral patches (T2 strongly silver pruinose posterolaterally); T5–8 dark red-brown. Sternites similar to tergites but orange parts haphazardly distributed.   
 Genitalia (Figs 75–77): Epand bifid, forming pair of relatively long, straight, slender lobes that project posteriorly beyond all other genital structures. Lobes closely abut proximally, lie parallel to each other. Proct simple, dorsally situated cerc appearing fused proximally. Goncx well developed, outer lobe projecting posteriorly to fairly broadly rounded distal end; dorsal process not finger-like but as broadly rounded, setose bump; inner lobe well developed, distal end sclerotised, somewhat medially directed and with prominent distal, outwardly directed, rounded process. Gonst hardly compressed, dorsally directed, tip curved anteriorly. Hypd well developed, suboval proximally, with posteriorly projecting medial protuberance of characteristic shape; distal protuberance with pair of slightly raised, setose bumps (these setae strong, proximally directed). Aed largely hidden in undissected genitalia.   
 Female. Similar to male, slightly larger (wing 9.1× 3.6 mm), abdomen more extensively blackish except for posterior margin of T6 and entire T7–9 which are orange.   
Variation: A species exhibiting remarkably little variation. The holotype has a slightly more brown-stained wing membrane when compared to the paratypes.  
Holotype: ♂ MOZAMBIQUE: ‘ Moçambique / Matola [25°58'S: 32°27'E] / 10.4.1982 / Coll. H.R. Feijen’ (NMSA).  
Paratypes: SOUTH AFRICA: 1♂ ‘ Molsgaat, nr / Chunies Poort [14°13'S: 29°32'E] / Oct. 1935 / G. van Son’ (NMSA); 1♀ ‘ Waterberg / Dist. [24°00'S: 28°00'E] 1898–99 / v. Jutrzencka’ (NMSA); 1♀ ‘ Moorddrift [24°17'S: 28°57'E] / Oct 1909 / C.J. Swierstra’ (NMSA); 1♂ ‘ Pretoria distr. / Soutpan [25.409°S: 28.096°E] / EKH / 4/4 1944 / Univ. Pretoria’ (NMSA); 1♀ ‘ Roodeplaat [25°41'S: 28°18'E], Tvl / 12.2.1969 / M.W. Strydom’ (SANC); 1♂ ‘ Transvaal: / Pretoria. [25°44'S: 28°11'E] / 28.iii.1914. / Miss J. Brinker. / 1914–277.’ (BMNH).  
 Notes: Although a few of the above specimens were identified as cruciger by Harold Oldroyd, the species only superficially resembles cruciger. The condition of two of the paratypes is generally poor.   
Distribution, phenology and biology: Recorded from Southern Africa (Mozambique and South Africa) (Table 1, Fig. 150). Adults have been collected in October as well as from February–April (Table 2). The biology is unknown, but label data suggest that this is a savanna species.  
 Similar species: A member of the nomadus species-group with close similarities to magnificus.
description: Published as part of Londt, Jason G. H., 2011, A review of Afrotropical Ancylorhynchus Berthold, 1827 (Diptera: Asilidae: Stenopogoninae), pp. 471 in African Invertebrates 52 (2) on pages 488-490, DOI: 10.5733/afin.052.0214, http://zenodo.org/record/7917250