Heligmonevra russnota Martin, 1964 Stat. Rev.

Jason G. H. Londt, 2014, The Afrotropical Robber Fly Genus Congomochtherus Oldroyd, 1979 (Diptera: Asilidae: Asilinae), African Invertebrates 55 (2), pp. 333-350: 343-345

publication ID

http://dx.doi.org/10.5733/afin.055.0204

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lsid:zoobank.org:pub:B6764F23-CEA3-46CD-9CF5-56843CD40D99

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http://treatment.plazi.org/id/03B38796-E84D-5845-FEA4-AD31FEA9FEC0

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scientific name

Heligmonevra russnota Martin, 1964 Stat. Rev.
status

Stat. Rev.

Heligmonevra russnota Martin, 1964 Stat. Rev. 

Figs 12-15View Figs 12-15

Heligmoneura russnota Martin, 1964: 304  (figs 73 mesonotum, 83 ♂ terminalia).

Heligmonevra russnota: Oldroyd 1980: 338  (catalogue).

Congomochtherus russnota: Tomasovic 2006: 148  (figs 6 epandrium, 7 gonocoxite & dististylus, 8 hypandrium, 9 aedeagus).

Martin (1964) described this Madagascan species from the type locality of Ambalavao [c. 21°14'S 47°14'E c. 1280 m] and five other localities on the island. In the absence of a modern review of Heligmonevra, Tomasovic (2006)  transferred H. russnota  to Congomochtherus  after studying material (9♂ 9♀) from Morarano Chrome, collected by A. Pauly and housed in GULB.As this was the first record of the genus from Madagascar, I borrowed two pairs of specimens from GULB in order to satisfy my curiosity regarding Tomasovic's action. While I can confirm the specific identification to be H. russnota  , as the males possess the hypandrium uniquely tapering to a point ( Figs 12, 14View Figs 12-15), I am not convinced that the species is correctly assigned to Congomochtherus  and so here reassign it to Heligmonevra  , where I believe it should reside, at least until a thorough revision of the genus has been undertaken. The Morarano Chrome specimens key out well to Heligmonevra  using a key to the genera of Asilinae published by Londt (2002). There are currently 24 described Afrotropical species, 14 of which are Madagascan endemics (Note: Martin's (1964) study included 16 species, two of which have since been transferred to other genera).

In general appearance Congomochtherus  species are far more robust and darkly pigmented than Heligmonevra  species, which are rather slender and much paler in colour. While these genera are similar, the specimens of H. russnota  do not agree with Congomochtherus  species in a variety of features: (1) In H. russnota  the antennal style appears 2-segmented -the small basal segment-like element is not clearly defined (in Congomochtherus  this element is reasonably distinct). (2) In H. russnota  all femora are slender and predominantly yellowish except for small dark-brownish areas (in Congomochtherus  all femora are fairly robust and entirely to very extensively blackish). (3) In H. russnota  the thoracic pruinescence is strongly developed (in Congomochtherus  species it is weakly developed). (4) In H. russnota  the face is only slightly ventrally protuberant (in Congomochtherus  the face is obviously protuberant). (5) In H. russnota  the female terminalia ( Fig. 15View Figs 12-15) are relatively weakly sclerotised, in particular the hypogynial valves, and cerci are finely setose (in Congomochtherus  the female terminalia are strongly sclerotised and the cerci commonly have short spine-like setae).

Material examined: MADAGASCAR: 2♂ 2♀ Morarano [19°26'S 47°29'E c. 1550 m] - Chrome, i.1992, A Pauly (GULB).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Asilidae

Genus

Heligmonevra

Loc

Heligmonevra russnota Martin, 1964 Stat. Rev.

Jason G. H. Londt 2014
2014
Loc

Congomochtherus russnota

: Tomasovic 2006: 148
2006
Loc

Heligmonevra russnota:

Oldroyd 1980: 338
1980
Loc

Heligmoneura russnota

Martin 1964: 304
1964