Haplomydas crassipes Bezzi, 1924

Boschert, Claire & Dikow, Torsten, 2022, Taxonomic revision of the mydas-fly genera Eremohaplomydas Bequaert, 1959, Haplomydas Bezzi, 1924, and Lachnocorynus Hesse, 1969 (Insecta, Diptera, Mydidae), African Invertebrates 63 (1), pp. 19-75 : 19

Haplomydas crassipes Bezzi, 1924

Figs 35-40 , 54 , 57

Haplomydas crassipes Bezzi, 1924

GBIF: https://www.gbif.org/species/1591512

Rhopalia flavomarginata Brunetti, 1929 - junior synonym; ZooBank http://zoobank.org/NomenclaturalActs/82C1F003-57A2-4559-9BB6-0AABDAC5285E

Heleomydas lesnei Seguy, 1929 - junior synonym; ZooBank http://zoobank.org/NomenclaturalActs/3566EA36-0139-4B9C-80CA-3BD2A3BE2250

Diagnosis.

See above for genus.

Redescription.

Female. Head: brown, facial gibbosity yellow, in general densely white pubescent, white setose, regular, cylindrical setae; width distinctly greater than thorax (at postpronotal lobe), interocular distance on vertex larger than at ventral eye margin; vertex between compound eyes ± horizontally straight, medially only slightly below dorsal eye margin, vertex medially apubescent, laterally white pubescent, white setose; ocellar triangle apubescent; facial gibbosity distinct, well-developed and discernible in lateral view, mystax covering entire facial gibbosity, white; parafacial area approximately as wide as ½ width of central facial gibbosity (at same level); frons not elevated, medially apubescent, laterally white pubescent, medially asetose, latero-ventrally white; occiput grey pubescent, white setose, median occipital sclerite brown macrosetose; pocl macrosetae absent; postgena sparsely grey pubescent, long, sparsely white setose; clypeus comprised of single sclerite, entirely sclerotized medially, recessed (concave), ventrally simple, posterior to proboscis, laterally connected to face by membranous cuticle; proboscis long, reaching fronto-clypeal suture, brown; labellum large, much wider than prementum, as long as prementum, unsclerotized laterally; maxillary palpus laterally compressed, bilobed apically, light brown, approximately ⅓ length of proboscis.

Antenna: brown; scape white setose dorsally, asetose ventrally; pedicel white setose dorsally and ventrally; postpedicel cylindrical in proximal ⅓, symmetrically bulbous in distal 2/3, ≥ 4.0 times as long as combined length of scape and pedicel, asetose; apical seta-like sensory element situated apically in cavity on postpedicel.

Thorax: brown, predominantly grey pubescent; scutum predominantly black, surface microrugose (slightly rugose ‘imitating’ pubescence), grey pubescent except for brown pubescent broad median stripe (not reaching posterior margin) and sublateral stripes (interrupted by transverse suture), scutal setation comprised of short white setae in primarily grey pubescent areas; dc setae presuturally white, postsuturally absent, acr setae absent, lateral scutal setae white, npl setae 0, spal setae 0, pal setae 0; proepisternum apubescent medially, grey pubescent laterally, long white setose; proepimeron grey pubescent, asetose; antepronotum antero-medially smooth (without any indentation); lateral postpronotum long white setose; postpronotal lobe yellow, grey pubescent, long white setose; scutellum grey pubescent, discal scutellar setae absent, apical scutellar setae absent; mesopostnotum grey pubescent, asetose; anatergite grey pubescent, asetose; katatergite apubescent, long white setose, elevated and smoothly convex; anepisternum grey pubescent dorsally, apubescent ventrally, anteriorly asetose, posteriorly short white setose, otherwise asetose; katepisternum apubescent, asetose; anepimeron apubescent, asetose; katepimeron apubescent, asetose; meron grey pubescent dorsally, apubescent ventrally, asetose; metakatepisternum large; metanepisternum grey pubescent, asetose; metepimeron yellow (same color as T1), white pubescent, long white setose, ± flat, infra-halter sclerite absent.

Legs: yellow to brown, setation comprised of white setae and brown macrosetae; pro coxa apubescent, short white setose; mes coxa apubescent, long white setose; met coxa laterally unsclerotized (membrane between coxa and metakatepisternum clearly visible), apubescent, long white setose; met trochanter sparsely setose medially; pro + mes femur yellow anteriorly, posteriorly brown, met femur yellow anteriorly, posteriorly brown, distinctly clubbed for nearly entire length, macrosetose with thickened spine-like macrosetae on protuberance in 2 antero-ventral and 2 postero-ventral rows, postero-ventrally sparse, short white setose; pro tibia straight; mes tibia straight; met tibia laterally arched, met tibia cylindrical with distinct ventral keel terminating into distinct spur, spur almost reaching tip of 1st tarsomere, postero-laterally short white, appressed setose; pro + mes tarsomere 1 approximately as long as individual tarsomeres 2, 3, or 4, met tarsomere 1 as long as individual tarsomeres 2, 3, or 4; pulvillus well-developed, as long as well-developed claw, and as wide as base of claw; setiform empodium absent.

Wing: length = 7.8-10.4 mm; hyaline throughout, slightly brown stained along veins, veins light brown, microtrichia absent; cells r1, r4, m3, + cua closed, r5 open; C terminating at junction with M1 (or M1+M2); Sc long, terminating in C proximal to r-m; R4 terminates in R1; R5 terminates in R1; auxiliary vein (R3) at base of R4 absent; R4 and R5 widest apart medially; r-m indistinct, R4+5 and M1 fused, forming an X; M1 curves slightly anteriorly at r-m, M1 (or M1+M2) terminates in C; base of M3+M4 present, M3+M4 not terminating together in C (not reaching wing margin), M4 and CuA split proximally to m-cu (cell m3 narrow proximally); CuP straight, cell cup wide, CuP and wing margin further apart proximally than distally; alula well-developed; halter light yellow, pubescent, dorsally asetose, ventrally yellow setose.

Abdomen: light brown to brown, setation comprised of scattered short white setae, T2-4 parallel-sided and not constricted waist-like, T surface entirely smooth; T1 yellow, T2-7 brown (sometimes medially light brown) with yellow posterior margins; T apubescent; T1 long white setose, T2-7 sparsely short white setose; S1 yellow, S2-7 light brown to brown with yellow posterior margins; S apubescent; S1 and S7 short white setose, S2-6 asetose; bullae on T2 absent.

♀ abdomen and genitalia: densely arranged anteriorly directed setae present on T7-8 and S8, only few on S7; T8 anterior apodeme present, broad and rectangular, auxiliary spiracle present; T9 formed by wide, rectangular sclerite with median protuberance; T9+10 entirely fused (sclerites indistinguishable), T10 divided into 2 heavily sclerotized acanthophorite plates; 6-8 acanthophorite spines per plate; 2 spermathecae, all equally large, not differentiated from spermathecal ducts, unsclerotized; individual spermathecal duct long; S9 (furca) formed by 1 sclerite, ring-like (joined anteriorly and posteriorly), anterior furcal apodeme present, 2 lateral projections forming divided apodeme, lateral furcal apodeme absent, median furcal bridge absent.

Male. Head: black, facial gibbosity yellow to light brown, in general densely white pubescent, white setose, regular, cylindrical setae; width distinctly greater than thorax (at postpronotal lobe), interocular distance on vertex larger than at ventral eye margin; vertex between compound eyes ± horizontally straight, medially only slightly below dorsal eye margin, vertex medially apubescent, laterally white pubescent, white setose; ocellar triangle apubescent; facial gibbosity distinct, well-developed and discernible in lateral view, mystax covering entire facial gibbosity, white; parafacial area less than ½ width of central facial gibbosity (at same level); frons not elevated, medially apubescent, laterally white pubescent, medially asetose, latero-ventrally white; occiput grey pubescent, white setose, median occipital sclerite brown macrosetose; pocl macrosetae absent; postgena sparsely grey pubescent, long, sparsely white setose; clypeus comprised of single sclerite, entirely sclerotized medially, recessed (concave), ventrally simple, posterior to proboscis, laterally connected to face by membranous cuticle; proboscis long, reaching fronto-clypeal suture, brown; labellum large, much wider than prementum, as long as prementum, unsclerotized laterally; maxillary palpus laterally compressed, bilobed apically, light brown, approximately ⅓ length of proboscis.

Antenna: brown; scape white setose dorsally, asetose ventrally; pedicel white setose dorsally and ventrally; postpedicel cylindrical in proximal ½, symmetrically bulbous in distal ½, ≥ 4.0 times as long as combined length of scape and pedicel, asetose; apical seta-like sensory element situated apically in cavity on postpedicel.

Thorax: dark brown, predominantly grey pubescent; scutum uniformly black, surface microrugose (slightly rugose ‘imitating’ pubescence), grey pubescent except for brown pubescent broad median stripe (not reaching posterior margin) and sublateral stripes (interrupted by transverse suture), scutal setation comprised of short white setae in primarily grey pubescent areas; dc setae presuturally white, postsuturally absent, acr setae absent, lateral scutal setae white, npl setae 0, spal setae 0, pal setae 0; proepisternum apubescent medially, grey pubescent laterally, long white setose; proepimeron grey pubescent, asetose; antepronotum antero-medially smooth (without any indentation); lateral postpronotum long white setose; postpronotal lobe yellow, grey pubescent, long white setose; scutellum grey pubescent, discal scutellar setae absent, apical scutellar setae absent; mesopostnotum grey pubescent, asetose; anatergite grey pubescent, asetose; katatergite apubescent, long white setose, elevated and smoothly convex; anepisternum grey pubescent dorsally, apubescent ventrally, anteriorly asetose, posteriorly short white setose, otherwise asetose; katepisternum apubescent, asetose; anepimeron apubescent, long white setose ventrally; katepimeron apubescent, asetose; meron grey pubescent, median stripe apubescent, asetose; metakatepisternum large; metanepisternum grey pubescent, asetose; metepimeron yellow (same color as T1), white pubescent, long white setose, ± flat, infra-halter sclerite absent.

Legs: yellow to brown, setation comprised of white setae and black macrosetae; pro coxa apubescent, short white setose; mes coxa apubescent, long white setose; met coxa laterally unsclerotized (membrane between coxa and metakatepisternum clearly visible), apubescent, long white setose; met trochanter sparsely setose medially; pro + mes femur yellow anteriorly, posteriorly brown, met femur yellow anteriorly, posteriorly brown, distinctly clubbed for nearly entire length, macrosetose with thickened spine-like macrosetae on protuberance in 2 antero-ventral and 2 postero-ventral rows, postero-ventrally sparse, long white erect setose; pro tibia straight; mes tibia straight; met tibia laterally arched, met tibia cylindrical with distinct ventral keel terminating into distinct spur, spur almost reaching tip of 1st tarsomere, postero-laterally short white, appressed setose; pro + mes tarsomere 1 approximately as long as individual tarsomeres 2, 3, or 4, met tarsomere 1 as long as individual tarsomeres 2, 3, or 4; pulvillus well-developed, as long as well-developed claw, and as wide as the base of the claw; setiform empodium absent.

Wing: length = 7.1-7.6 mm; hyaline throughout, slightly brown stained along veins, veins brown, microtrichia absent; cells r1, r4, m3, + cua closed, r5 open; C terminating at junction with M1 (or M1+M2); Sc long, terminating in C proximal to r-m; R4 terminates in R1; R5 terminates in R1; auxiliary vein (R3) at base of R4 absent; R4 and R5 widest apart medially; r-m indistinct, R4+5 and M1 fused, forming an X, rarely distinct, R4+5 and M1 apart, connected by crossvein; M1 curves slightly anteriorly at r-m, M1 (or M1+M2) terminates in C; base of M3+M4 present, M3+M4 not terminating together in C (not reaching wing margin), M4 and CuA split proximally to m-cu (cell m3 narrow proximally); CuP straight, cell cup wide, CuP and wing margin further apart proximally than distally; alula well-developed; halter light yellow, pubescent, dorsally asetose, ventrally yellow setose.

Abdomen: yellow to brown, setation comprised of scattered short white setae, T2-4 parallel-sided and not constricted waist-like, T surface entirely smooth; T1-7 yellow to orange, T2-7 antero-laterally brown; T apubescent; T1 and anterior ¼ of T2 long white setose, remaining T2 and T3-T7 sparsely white setose laterally; S1-7 yellow, brown medially; S predominantly apubescent; S1-7 sparsely short white setose; bullae on T2 transversely elongate, long (almost occupying entire lateral aspect of tergite), light brown, surface entirely smooth, T2 surface anterior to bullae smooth.

♂ abdomen and terminalia: T1-7 well-developed, entirely sclerotized, T8 postero-medially weakly sclerotized, with anterior transverse sclerotized bridge connecting lateral sclerites; T7-8 anteriorly with 2 lateral apodemes; T8 auxiliary spiracle present; S6 regular, without any special setation postero-medially; S8 simple plate, entire (undivided) ventro-medially, not fused to T8 dorso-laterally; epandrium formed by 2 sclerites, separated disto-medially and fused antero-medially, distally in dorsal view blunt with short, strong macrosetae at tip; subepandrial sclerite without lateral or median protuberances; hypandrium concave, cup-shaped, entirely sclerotized ventrally, entirely fused with gonocoxite, forming a gonocoxite-hypandrial complex, supra-hypandrial sclerite absent; gonocoxite simple, long, slightly curved dorsally, with median protuberance, gonocoxal apodeme absent; 2 functional phallic prongs, short and wide, medio-distally connected, parallel or diverging laterally, distally straight or only diverging slightly laterally; phallic epimere absent; lateral ejaculatory process absent; ejaculatory apodeme formed by single dorso-ventrally oriented plate; ventro-median margin of parameral sheath heavily sclerotized (appearing entirely closed); parameral sheath long, sperm sac entirely covered; sperm sac appearing ± heavily sclerotized.

Type locality.

Zimbabwe: Bulawayo: Bulawayo (20°09'00"S, 028°35'00"E, -20.15, 28.58333).

Material examined.

Botswana: Central: 1♂ Serowe, Farmers Brigade , 22°09'58"S, 026°43'31"E, 1990-04-00, Malaise trap, Forchhammer, P. ( AAM-000809 , NMSA) ; 4♂ Serowe, Farmers Brigade , 22°09'58"S, 026°43'31"E, 1987-04-00, Malaise trap, Forchhammer, P. ( USNMENT00832025 , USNMENT00832027 , USNMENT00832028 , USNMENT00891896 , USNM) ; 1♀ Serowe, Farmers Brigade , 22°09'58"S, 026°43'31"E, 1987-04-00, Malaise trap, Forchhammer, P. ( USNMENT00832026 , USNM) ; Kgatleng: 2♀ Mochudi , 24°25'00"S, 026°08'00"E, 1982-04-19 - 1982-04-21, Louw, S. ( BMSA(D)00087 , BMSA(D)00091 , BMSA) ; 4♂ Mochudi , 24°25'00"S, 026°08'00"E, 1982-04-19 - 1982-04-21, Louw, S. ( BMSA(D)00088 , BMSA(D)00089 , BMSA(D)00090 , BMSA(D)00092 , BMSA) ; Mozambique: Gaza: 1♀ Mapai , 22°51'08"S, 031°58'02"E, 1951-05-00, Zumpt, F. ( NMSA-DIP-044922 , NMSA) ; Manica: 2♂ Zambéze amont de Tambara (= Nhacolo) Njanassé, Lac Msica , 16°38'21"S, 034°07'28"E, 1929-00-00, Lesne, P. ( AAM-001199 , AAM-001200 , MNHN) ; 1♂ Inhacoro (= Nhacolo ), 16°42'57"S, 034°15'10"E, 1928-05-00, Lesne, P. (Paratype Heleomydas lesnei , MNHN) ; Sofala: 1♂ Nova Chupanga , 17°07'32"S, 034°51'34"E, 0000-05-00, Lesne, P. (Holotype Heleomydas lesnei , MNHN) ; Namibia: Hardap: 2♂ Rehoboth , 9 km S, 23°23'28"S, 017°06'23"E, 1990-03-16, Pulawski, W. ( CASENT8380010 , CASENT8380011 , CAS) ; 1♂ Rehoboth , 9 km S, 23°23'59"S, 017°04'12"E, 1990-03-16, Schwarz, M. ( AAM-000872 , Coll. Hauser) ; Khomas: 2♂ Seeis , 9 km ESE, 20°28'00"S, 017°38'00"E, 1976-03-12, Rozen, J. ( AAM-000097 , AAM-000098 , AMNH) ; 1♂ Seeis , 22 km ESE, 20°31'00"S, 017°45'00"E, 1976-03-14, Rozen, J. ( AAM-000099 , AMNH) ; 1♀ Seeis , 22 km ESE, 20°31'00"S, 017°45'00"E, 1976-03-14, Rozen, J. ( AAM-000100 , AMNH) ; 2♀ Windhoek , 26 km N Road 1/6, 22°20'00"S, 017°04'00"E, 1984-03-29, dry stream bed Acacia riparian woodland, Londt, J., Stuckenberg, B. ( NMSA-DIP-77046 , NMSA-DIP-77050 , NMSA) ; 1♂ Windhoek , 26 km N Road 1/6, 22°20'00"S, 017°04'00"E, 1984-03-29, dry stream bed Acacia riparian woodland, Londt, J., Stuckenberg, B. ( NMSA-DIP-77047 , NMSA) ; 1♀ Windhoek , 36 km E Road 6/1, 22°30'00"S, 017°22'00"E, 1984-03-17, dry river bed Acacia savanna / grassland, Londt, J., Stuckenberg, B. ( NMSA-DIP-77048 , NMSA) ; 1♂ Windhoek , 36 km E Road 6/1, 22°30'00"S, 017°22'00"E, 1984-03-17, dry river bed Acacia savanna / grassland, Londt, J., Stuckenberg, B. ( NMSA-DIP-77049 , NMSA) ; 1♂ Gamsberg , E of pass, 23°20'00"S, 016°20'00"E, 1999-03-12, Gess, F., Gess, S. ( AAM-000203 , AMGS); Omaheke: 2♀ Witvlei , 22°24'35"S, 018°29'30"E, 1970-03-01, Ross, E. ( CASENT8380006 , CASENT8380007 , CAS) ; 1♂ Witvlei , 22°24'35"S, 018°29'30"E, 1970-03-01, Ross, E. ( CASENT8380008 , CASENT8380009 , CAS); Otjozondjupa: 1♂ Gross Barmen Resort , 22°06'42"S, 016°44'48"E, 1992-03-19, at night, O’Brian, C., O’Brian, L., Marshall, G. ( AAM-009904 , CSCA) ; Zimbabwe: Bulawayo: 1♀ Bulawayo , 20°09'00"S, 028°35'00"E, 1917-05-00, Tucker, R. ( SAM-DIP-A007141 , Holotype, SAMC) ; Zimbabwe: 1♂ Worlds View , 18°09'49"S, 032°46'29"E, 1925-04-24, Stevenson, R. ( NMSA-DIP-044922 , NMSA) ; 1♂ Bazely Bridge , 19°15'01"S, 032°29'23"E, 1965-04-20, Cookson, D. ( NMSA-DIP-031720 , NMSA) ; Matabeleland North: 1♀ Khami Ruins , 20°09'30"S, 028°22'36"E, 1924-04-19, Rhodesia Museum ( AAM-000647 , NHMUK) ; 1♂ Khami Ruins , 20°09'30"S, 028°22'36"E, 1924-04-19, Rhodesia Museum ( AAM-000648 , NHMUK) ; 1♂ Khami , 20°09'30"S, 028°22'36"E, 1927-04-17, Rhodesia Museum ( AAM-009508 , NHMW) ; 1♀ Khami Ruins , 20°09'30"S, 028°22'36"E, 1924-04-19, Rhodesia Museum ( NMZ1701 , NMBZ) ; 1♂ Khami , 20°09'30"S, 028°22'36"E, 1927-04-17, Rhodesia Museum ( NMZ1707 , NMBZ) ; Matabeleland South: 1♀ Matopos , 20°23'02"S, 028°30'28"E, 1920-05-02, Rhodesia Museum (Holotype Rhopalia flavomarginata , BMNH(E)241675 , NHMUK) ; 1♂ Matopos , 20°23'02"S, 028°30'28"E, 1925-04-22, Stevenson, R. ( NMSA-DIP-044921 , NMSA) ; 3♀ 6♂ Matopos Hills , 20°26'39"S, 028°30'58"E, 1932-04-00, Ogilvie, L. ( AAM-000652-AAM-000660 , NHMUK) ; 1♂ Matopos Hills , 20°26'39"S, 028°30'58"E, 1932-04-00, Ogilvie, L. ( AAM-003022 , RBINS) ; 1? * Balla-Balla (= Mbalabala), 20°26'60"S, 029°02'09"E, no date, along sandy path in Mopane forest ( AAM-000072 , RBINS) ; 1♀ Balla-Balla (= Mbalabala), 20°26'60"S, 029°02'09"E, 1933-03-00, Cuthbertson, A. ( AAM-001357 , RBINS) ; 1♀ 2♂ Balla-Balla (= Mbalabala), 20°26'60"S, 029°02'09"E, 1933-02-00, Cuthbertson, A. ( AAM-000095 - AAM-000096 , AMNH) ; 1♀ Ori River, Matopos , 20°33'26"S, 028°30'49"E, 1930-05-01, Stevenson, R. ( NMZ1709 , NMBZ) ; 3♂ Beit Bridge , 22°12'51"S, 029°59'29"E, 1932-04-00, Ogilvie, L. ( AAM-000071 , AAM-000649 , AAM-000650 , NHMUK) ; 1♀ Beit Bridge , 22°12'51"S, 029°59'29"E, 1932-04-00, Ogilvie, L. ( AAM-008033 , NHMUK) ; 1♀ Beit Bridge , 22°12'51"S, 029°59'29"E, 1932-04-00, Ogilvie, J. ( SDEI) ; Midlands: 1♂ Shangani, De Beer's Ranch , 19°00'00"S, 028°54'00"E, 1932-05-00, Ogilvie, L. ( AAM-000651 , NHMUK) .

Distribution, biodiversity hotspots, phenology, and biology.

See above for genus.

Remarks.

Dikow (2017) reported that the females of H. crassipes appear to lack bullae on the postero-lateral surface of abdominal tergite 2.

Figures

Figure 57. Map of southern Africa with elevational relief and biodiversity hotspots (sensu Conservation International in grey) and distribution of Eremohaplomydas stomachoris sp. nov., Eremohaplomydas whartoni sp. nov. (both localities only 5 km apart), and Haplomydas crassipes (SimpleMappr https: // www. simplemappr. net / map / 14090). Distribution and occurrence data available in Google Earth KML file https: // www. simplemappr. net / map / 14090. kml and also through GBIF (data-set https: // www. gbif. org / dataset / 993875 DD- 5915 - 4107 - 8707 - 835 D 5 A 8 D 1022, DOI https: // doi. org / 10.15468 / awpjz 9).

Figures 35 - 40. Haplomydas crassipes: 35 ♂ (NMSA-DIP- 77049, Zenodo https: // doi. org / 10.5281 / zenodo. 6083941), dorsal (https: // doi. org / 10.5281 / zenodo. 6084017) 36 same, lateral (https: // doi. org / 10.5281 / zenodo. 6084019) 37 same, head anterior (https: // doi. org / 10.5281 / zenodo. 6084021) 38 ♀ (NMSA-DIP- 77048, https: // doi. org / 10.5281 / zenodo. 6083943), head anterior (https: // doi. org / 10.5281 / zenodo. 6084027) 39 same, dorsal (https: // doi. org / 10.5281 / zenodo. 6084023) 40 same, lateral (https: // doi. org / 10.5281 / zenodo. 6084025). Scale bars: 5 mm.

Figures 53 - 55. Metathoracic coxa in lateral view: 53 Eremohaplomydas gobabebensis sp. nov. (USNMENT 01518012, crop of Fig. 11) 54 Haplomydas crassipes (NMSA-DIP- 77049, crop Fig. 36) 55 Lachnocorynus chobeensis (NMSA-Dip- 43314, crop of Fig. 42).