Himantigera silvestris McFadden, 1982,

Fachin, Diego Aguilar & Hauser, Martin, 2018, Taxonomic revision of the Neotropical genus Himantigera James, 1982 (Diptera: Stratiomyidae: Sarginae), including the description of two new species and a key to the known species, Zootaxa 4531 (4), pp. 451-498: 461-467

publication ID

https://doi.org/10.11646/zootaxa.4531.4.1

publication LSID

lsid:zoobank.org:pub:5D970775-E299-4D89-8CF5-BEA826669C7C

persistent identifier

http://treatment.plazi.org/id/1D0E87F4-FFDE-055C-89C3-F9A8E73B13EE

treatment provided by

Plazi

scientific name

Himantigera silvestris McFadden, 1982
status

 

Himantigera silvestris McFadden, 1982 

( Figs 2View FIGURES 1–6, 7–8, 11View FIGURES 7–12, 17–18View FIGURES 13–24, 27View FIGURES 25–28, 34View FIGURES 33–38, 40View FIGURES 39–44, 48–49View FIGURES 45–55, 59–61View FIGURES 59–61, 64–65View FIGURES 62–65, 90–95View FIGURES 86–95, 108View FIGURES 106–111, 114View FIGURES 112–117, 122View FIGURES 120–125, 128View FIGURE 128, holotype, WSU)

Himantigera silvestris McFadden in James & McFadden, 1982: 20  (original description); 19, (identification key to species); 45, Fig. 29View FIGURES 29–32 (male genitalia, ventral view). Type locality: Mexico, Veracruz, Lake Catemaco, 258 m. Holotype ♂ [WSU]; Paratypes: 2 ♂ [ CNC]  ; 3 ♂ [ CAS]  , 1 ♂, [ FSCA]  ; 1 ♂ [SEMC]; 2 ♂ [MCZ]; 2 ♂, 2 ♀ [UCB]; 2 ♂ [USNM]; 7 ♂ [WSU]; 25 ♂ [WSU, MCZ].

Diagnosis. Upper frons much narrower than widest margin of frontal callus; margin of frontal callus strongly divergent ( Fig. 17View FIGURES 13–24). Fore legs entirely yellow in males ( Fig. 114View FIGURES 112–117). R 2+3 originating at or very close to r–m ( Fig. 34View FIGURES 33–38). Abdomen subrectangular, almost equally wide from second to fourth segments ( Figs 48–49View FIGURES 45–55).

Material examined. Type material: HOLOTYPE  ( Fig. 128View FIGURE 128, A–F), ♂ labeled: “ Mexico , Veracruz, / Lake Catemaco, / 04–06.vii.1966, 850’ / M.W. McFadden [printed on white paper]”; Himantigera  / silvestris / ♂ McFadden / HOLOTYPE [handwritten on red paper]” ( WSU). PARATYPES: 1 ♂, COSTA RICA, Cartago, Turrialba, 2000’, 17.vii.1965, H.G. Real ( CAS); 1 ♂, 07.viii.1965, Raspe coll. ( CAS). 1 ♂, Heredia Prov. [Province], La Selva, 2 km SW Puerto Viejo, 04–07.viii.1971, at sta. window, P.A. Opler ( CAS). 1 ♂, 1 ♀, MEXICO, Chiapas, Simojovel, 18–31.vii.1958, J.A. Chemsak collector (1 ♂, UCB; 1 ♀ WSU). 1 ♂ (stated as ♀), Oaxaca, Temascal, 04.x.1963, K.H. Janzen collector ( UCB). 1 ♀, Veracruz, 11. mi. [miles] N. Cordoba, 02.vii.1962, D.E. Janzen collector ( UCB); 5 ♂ (2 ♂, one with left antenna and wing slide-mounted, CNC; 3 ♂, WSU), Catemaco, 1100 ft., 16–18.vi.1969, W.R.M. Mason; 3 ♂ (one with abdomen glued to locality label; other one with a microvial pinned beneath it), same date as holotype ( WSU). 1 ♂, PANAMA, CZ [Canal Zone], Panama, Barro Colorado Isl. [Island] 26.vi.1924, N. [Nathan Banks] ( WSU); 1 ♂, 17.viii.1924 ( WSU); 1 ♂, 04.viii.1977, Silberlied/Aiello ( USNM); 1 ♂, 05.viii.1977 ( USNM). 

Additional material: 1 ♂, COLOMBIA, Chocó, PNN [Parque Nacional Natural] Utria, Send. Cocalito , 6.02°N 77.35°W, 16.viii–07.ix.2000, J. Pérez, MT [malaise trap], CAP-814 ( LACM)GoogleMaps  . 1 ♂, COSTA RICA, Cartago, Turrialba , grounds of IICA, 23.vi.1976, M. Wasbauer, Malaise trap 8A-5P ( UCB)  ; 1 ♂, Turrialba , CATIE, 26–29.vi.1986, W. Hanson, G. Bohart ( LACM)  . 1 ♀, Guanacaste Prov. [Province], 3 km SE R. Naranjo , 11–20.vi.1992, F.D. Parker ( LACM)  ; 1 ♀, 05–09.vii.1993 ( LACM)  ; 1 ♀, 24–30.viii.1993 ( LACM)  . 1 ♀, Guanacaste Conservation Area Santa Rosa Sector, Administration Area , viii.1998, Malaise trap, J.J. Sulivan ( USNM)  . 1 ♂, Limón, 4 km NE Bribri , 9°38’N 82°49’W, 50m, iv–vi.1990, Malaise trap, P. Hanson ( USNM)GoogleMaps  . 1 ♀, [CR2013-09], Rd. [Road] Manzanillo, Punta Uva , 9°37’30”-38’16”N 82°39’41”-41’39”W, 0–10 m, degraded costal rain forest, car net, 01.xii.2013, leg. M. Schülke & B. Grüberg ( CSCA)  . 1 ♀, Puntarenas, Golfito , 07.viii.1957, Arnold Menke ( LACM)  ; 2 ♂, 5 ♀, Golfito , 29.vi.1976, Malaise trap 8AM-5PM, M. Wasbauer coll. ( UCB)  ; 1 ♂, Golfito-United Fruit Co., 25.vi.1976 ( UCB)  ; 1 ♂, 2 ♀, Golfito-United Fruit Co., 1.vii.1976, Malaise trap 8A-5P ( UCB)  ; 1 ♂, Golfito , 10–100m, 25–26.vi.1976, E.M. Fisher, collr. [collector] ( CSCA)  . 2 ♀, 5 km NW Puerto Jimenez , 8°33’N 83°21’W, 10m, i.1991, P. HansonGoogleMaps  1 ♀, xi.1991 ( USNM)  ; 3 ♂, 2 ♀, 3 km NW Puerto Jimenez , 8°41’N 83°29’W, 10m, iii–v.1991, Malaise trap, P. Hanson ( USNM)GoogleMaps  ; 1 ♂, viii.1991 ( USNM)  ; 1 ♀, xi.1991 ( USNM)  ; 1 ♀, Puerto Jimenez , 8°23’N 83°19’W, 10m, iv–v.1991, Malaise trap, P. Hanson ( USNM)GoogleMaps  . 1 ♂, 3 ♀, San José, Zona Protectora El Rodeo , 9.91°N [8] 4.28°W, 5–8.viii.2001, Malaise trap #2, B. Brown, V. Berezovskiy, G. Kung ( LACM)GoogleMaps  . 1 ♂, ECUADOR, Los Ríos, Vic. Quebrada , iii–iv.1955, E.N. O'Rourke ( USNM)  . 1 ♀, EL SALVADOR, Rosario Cuscatlan [Cuscatlán, Rosario], 15.vi.53, Salazar ( USNM)  . 1 ♂, GUATEMALA, Dept. [Department] Huehuetenango, 8 km SE. of La Mesilla , 810 m, 30.viii.1976, Edward S. Ross ( CAS)  . 1 ♂, Cayuga [= Izabal, Morales], vi.15, WmSchaus ( USNM)  . 2 ♂, MEXICO, Oaxaca, El Camarón , 17.27°N 100.35°W, 25.v–09.vi.1987, T. Taylor ( LACM)GoogleMaps  . 1 ♀, Puebla, San José St. Chiapas [= San José Chiapa], v.1910, 1000 to 1500 ft. [feet] El, Donor C.L. Fox ( CAS)  . 1 ♂, Veracruz, Citlaltépetl [= Pico de Orizaba], 03.vii.1964, el 3000, Coll. Suani ( CAS)  ; 1 ♀, Lake Catemaco , 18.vi.1969, B.V. Peterson ( CNC)  . 1 ♂, PANAMA, C.Z. [Canal Zone], Panama, Barro Colorado Isl. [Island], 18.vii.1924, N. Banks ( USNM)  ; 2 ♂, 1 ♀, 9°9’N 79°51’W, 12– 19.v.1993, J. Pickering, MT [malaise trap] #966 ( LACM)GoogleMaps  ; 1 ♀, 9°17’N 79°83’W, 04–11.ix.1996, J. Pickering, MT [malaise trap] #6851 ( LACM)  . 1 ♀, Guna Yala, Nusagandi , 9°20’N 79°0’W 29.i–05.ii.1994, J. Pickering, MT [malaise trap] #2061 ( LACM)GoogleMaps  . 3 ♂, 2 ♀, TRINIDAD AND TOBAGO, Tunapuna-Piarco, I. Simla Res. Sta. [Research Station], 02–15.vi.1981, Hanson, Clemons ( LACM)  . 1 ♂, Mt. St. Benedict , 10°40.08’N 61°23.97’W, 500–700 m, 25–30.xi.1999, R. Snelling, MT [malaise trap], primary rf. ( LACM)GoogleMaps  . 1 ♂, VENEZUELA, Carabobo, San Esteban [San Esteban National Park], xi.1939, Pablo Anduze ( USNM)  .

Redescription. Male. Length: body, 9.0–11.5 mm; wing, 8.5–12.0 mm. Head ( Fig. 17View FIGURES 13–24). Upper frons much narrower than widest margin of frontal callus. Frontal callus margin strongly divergent. Arista-like terminal flagellomere with six thin setae basally ( Fig. 2View FIGURES 1–6). Thorax. Fore leg entirely yellow, mid and hind legs mostly yellow (tarsomeres slightly lighter), except mid coxa proximally, hind coxa, apical half ventrally of mid and apical third of hind femora dark brown; often apex of mid tibia dark brown. Wing ( Fig. 27View FIGURES 25–28). R 2+3 originating at or very near to r–m level ( Fig. 34View FIGURES 33–38). Alula with microtrichia along anterior half and often apically ( Fig. 40View FIGURES 39–44). Abdomen ( Fig. 48View FIGURES 45–55). Abdomen subrectangular, less than twice longer than wide, almost equally wide from second to fourth segments; distinctly metallic green on tergites and sternites; long golden pilosity laterally on tergites 1–2, short golden pilosity on tergite 3, short black pilosity on tergites 4–5. Terminalia ( Figs 59–61View FIGURES 59–61, 90–95View FIGURES 86–95). Genital capsule slightly wider than high, its posterior margin rounded dorsally; medial process of synsternite strongly developed, ovalshaped distally ( Fig. 90View FIGURES 86–95), thin setae on distal half; anterior end of gonocoxal apodeme and anterior end of phallus exceeding anterior margin of genitalia. Gonostylus not much longer than wide, apical margin concave ( Fig. 92View FIGURES 86–95). Epandrium longer than wide, connection between sternite 10 and epandrium expanded ( Fig. 59View FIGURES 59–61).

Female. As for males, except as follows. Length: body, 8.5–11.0 mm, wing, 8.5–12.0 mm. Head ( Fig. 18View FIGURES 13–24). Upper frons narrower than widest margin of frontal callus; lateral area half of medial area width. Thorax. Legs much darker. Apical third of all femora dark brown. All tibiae ventrally dark brown on basal and apical thirds, medial third yellow. Abdomen ( Fig. 49View FIGURES 45–55). Coppery metallic reflections on sternites. Terminalia ( Figs 64–65View FIGURES 62–65). Genital fork with its genital opening occupying nearly all its anterior half; short distance between each projection of posterior bridge; posterolateral process narrower basally, quite wide medially ( Fig. 65View FIGURES 62–65).

Geographic distribution. Mexico (Oaxaca, Puebla, Veracruz)  , Guatemala (Huehuetenango, Izabal, Suchitépequepez)  , El Salvador (Cuscatlán)  , Costa Rica (Cartago, Guanacaste, Heredia, Limón, Puntarenas, San José)  , Panama (Guna Yala, Panama), Colombia (Chocó)  , Trinidad & Tobago (Tunapuna-Piarco), Venezuela (Carabobo)  , Ecuador (Los Ríos) ( Fig. 130View FIGURE 130)  .

This species has a wide altitudinal range, occurring from 10 to 1450 meters as documented by the examined material.

Comments. The male and female genitalia of this species were previously not described, nor was the position of vein R 2+3. Himantigera silvestris  is similar in appearance to H. nigrifemorata  , especially the lighter males of H. nigrifemorata  . H. silvestris  differs, however, in being quite larger, robust (not fragile) and more metallic than H. nigrifemorata  , with all last tarsomeres yellow. The abdominal segments are almost equally wide in H. silvestris  ( Figs 48–49View FIGURES 45–55), while in H. nigrifemorata  , the first two abdominal segments are narrower than the last three ( Figs 45–46View FIGURES 45–55).

Himantigera silvestris  is even more similar to H. superba  . Males of H. silvestris  , however, have the fore tibia completely yellow (see Fig. 114View FIGURES 112–117), and the fore and hind femora never marked with dark brown ventrally, while in H. superba  , all legs are more marked of dark brown (see Fig. 115View FIGURES 112–117) including the apical third of the fore femur, virtually the entire surface of the mid and hind femora, and all tibiae ventrally (only yellow medially) (see Table 3). Furthermore, H. silvestris  (as H. nigrifemorata  ) is restricted to Central America ( Mexico to Panama), with a few records reaching the northern coastal regions of Ecuador, Colombia and Venezuela, whereas H. superba  is mostly occurring in the low lands of South America in the Amazon basin and also reaching southern Brazil ( Fig. 130View FIGURE 130).

Two paratypes of H. silvestris  from Panama collected in 1977 and originally cited as deposited in the MCZ (Norman E. Woodley, personal communication) are now housed in the USNM collection. Other paratypes from Guatemala were deposited in the AMNH and WSU collections, but it was not stated in the original publication how many specimens are in each location.

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

CAS

California Academy of Sciences

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

WSU

Weber State University, Bird and Mammal Collection

UCB

University of California at Berkeley

USNM

Smithsonian Institution, National Museum of Natural History

LACM

Natural History Museum of Los Angeles County

CSCA

California State Collection of Arthropods

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Stratiomyidae

Genus

Himantigera

Loc

Himantigera silvestris McFadden, 1982

Fachin, Diego Aguilar & Hauser, Martin 2018
2018
Loc

Himantigera silvestris McFadden in James & McFadden, 1982 : 20

James, M. T. & M. W. McFadden 1982: 20