Pagina-afbeeldingen
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Thorax: Yellowish brown, pleuron and anterior and lateral margins of mesonotum dark brown. Legs (fig. 14, e) brownish; knee spots blackish; fore femur and midfemur with subapical, and fore tibia and midtibia with basal, broad yellowish bands; hind femur dark brown with broad subapical pale band, hind tibia yellowish except dark brown at extreme tip; tibial comb with four spines, the one nearest the spur longest. Wing (fig. 14, d): Pattern as figured, as in C. decor; CR 0.60. Macrotrichia numerous, extending to base of wing in anal cell. Halter pale. Abdomen: Yellowish, becoming brownish distally. Spermathecae (fig. 14, f) ovoid with long slender necks; small and slightly unequal, measuring 0.064 by 0.046 mm. and 0.058 by 0.042 mm.; rudimentary spermatheca present, sclerotized ring absent. Male Genitalia (fig. 14, h).Ninth sternum with shallow caudomedian excavation, ventral membrane not spiculate; ninth tergum Short and tapering, with long, slender, divergent, apicolateral processes. Aedeagus with basal arch extending o not quite half of total length, basal arms slender and curved; listal portion tapering to moderately slender, bluntly pointed tip. Parameres (fig. 14, g) each with moderitely long anterolateral arm; midJortion straight and moderately tout, tapering to slender, simple tip, bruptly bent laterad and ventrad. Distribution.—Jamaica (fig. 2). Type.—Holotype, female, Jamaica, Portland Parish, Hardwar

Gap, Institute of Jamaica Cabin, 20 February 1969, W. W. Wirth, light trap (USNM 70654). West Indian Records.JAMAICA: Askenish, near Dolphin Head, Hanover Parish, 20 June 1970, E. G. Farnworth, light trap, 1 female; Hardwar Gap, same data as type, allotype, male, 1 male, 2 female paratypes; same, Hollywell Forest Camp, 16 June 1970, Farnworth, light trap, 1 male, 15 females; Worthy Park, St. Catherine Parish, 20 March 1970, Farnworth, light trap, 1 male, 4 females. Discussion.—This endemic Jamaican representative of the Caribbean C. nigrigenus group (fig. 2) can be recognized by the dark proximal half of the hind femur, by the relatively long proximal antennal segments (AR 1.35), and by the antennal sensory pattern 3,10–15. Larval Habitat.—Unknown. Biting Habits.-Unknown.

Culicoides floridensis Beck (Figs. 5, 15, and 30)

Culicoides floridensis Beck, 1951, p. 135 (male, female; Florida; fig. male genitalia).-Beck, 1956, p. 134 (Florida). —Williams, 1956, p. 299 (Bermuda; in key).-Williams, 1957, p. 66 (Bermuda).-Wirth and Williams, 1957, p. 12 (Bermuda; notes).-Beck, 1958, p. 9 (Florida).-Linley, 1970, p. 1016 (pupa, Florida).

Female.—Wing length 0.77 mm.

Head: Eyes (fig. 15, d) narrowly separated, bare. Antenna (fig. 15, a) with lengths of flagellar segments in proportion of 25–15–15–16–16– 17–17–18–26–29–33–34–47; AR 1.21; sensoria not distinguishable. Palpal

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segments (fig. 15, c) with lengths in proportion of 10–20–28–13–13; PR 2.0; third segment short, slightly swollen, with round, shallow sensory pit. Proboscis moderately short, P/H ratio 0.71; mandible with 14 teeth. Thorax: Pale yellowish, subshining in dry specimens. Legs (fig. 15, f) pale yellowish; tibial comb with four spines, the one nearest the spur longest. Wing (figs. 15, b, 30, k): Pale yellowish gray, without markings. Macrotrichia sparse, confined to apex of wing; CR 0.65; 2RC slitlike. Halter pale. Abdomen: Pale yellowish. Spermathecae (fig. 15, e) two plus long slender ring, rudimentary third spermatheca not visible; functional spermathecae pale yellowish, elongate

oval, tapering to long slender necks; subequal, each measuring 0.046 by 0.025 mm. including the neck. Male Genitalia (fig. 15, h).Ninth sternum with broad, shallow, caudomedian excavation, ventral membrane not spiculate; ninth tergum long and tapering, with short, pointed, apicolateral processes. Basistyle slender, ventral and dorsal roots slender, simple; dististyle long and slender, with bent, pointed tip. Aedeagus with basal arch rounded, extending to nearly half of total length, basal arms slender, slightly curved; distal portion tapering to slender, simple tip. Parameres (fig. 15, g) separate; each with distinct basal knob; stem moderately slender, with well-developed ventral lobe distally; distal portion beyond lobe slender, bent ventrad, tapering to

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FIGURE 15–Culicoides floridensis: a, Female antenna; b, female wing; c, female palpus d, female eye separation; e, spermathecae; f, hind femur and tibia; g, mal. parameres; h, male genitalia, parameres removed.

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slender point, and bearing lateral fringing spines.

Distribution.—Bahamas, Bermuda, Florida (fig. 5). Types.—Holotype, male, allo

type, female, Englewood, Sarasota County, Fla., in light trap (USNM 60924). West Indian Records.BAHAMAS: South Bimini, June, July 1951, M. Cazier, C. and P. Waurie, 1 male, 1 female (AMNH). Discussion.—C. floridensis is a peripheral element in the West Indian Culicoides fauna (fig. 5), occupying only the island nearest to the Florida mainland, where it is abundant in its own restricted area. It can be distinguished from C. melleus, which it closely resembles, by its shining yellowish integument, more slender habitus, definite round palpal pit, lightly sclerotized spermathecae, and male genitalia with long tapering ninth tergum, distally slender aedeagus, and parameres with a ventral lobe and distal fringing spines. Larval Habitat.—Linley (1970) described the pupa, which he reared in the laboratory on a nematode diet from eggs obtained by decapitating blood-fed wild females. Biting Habits.-C. floridensis is a vicious biter in Florida, attacking man in the daytime (Linley, 1970).

Culicoides foxi Ortiz

(Figs. 3 and 16)

Culicoides fori Ortiz, 1950, p. 461 (male; Puerto Rico; guttatus (Coquillett) of Fox, 1949).-Ortiz, 1951b, p. 4 (male, female; Venezuela; illus.).-Fox,

1952a, p. 888 (Puerto Rico)-Wirth and Blanton, 1956a, p. 309 (redescribed; distribution; illus.):-Forattini, 1957, p. 205 (redescribed; distribution; illus.):-Wirth and Blanton, 1959, p. 293 (redescribed; Panama distribution; illus.):-Fox and GarciaMoll, 1961, p. 120 (Puerto Rico).

Culicoides guttatus (Coquillett), misidentification.—Fox 1949, p. 31 (Puerto Rico; fig. wing, spermathecae, male genitalia) —Wolcott, 1951, p. 426 (Puerto Rico).

Female.—Wing length 1.21 mm.

Head: Eyes contiguous, bare. Antenna (fig. 16, a) with lengths of flagellar segments in proportion of 22 – 17 – 17 – 18 – 18 – 18 – 18 – 20 — 25–26–30–32–38; AR 1.10; sensory pattern 3, 11–15. Palpal segments (fig. 16, f) with lengths in proportion of 10–25–38–20–14; PR 3.2; third segment with broad, shallow sensory pit. Proboscis long, P/H ratio 1.15; mandible with 16 teeth.

Thorax: Dark brown; mesonotum (fig. 16, c) with prominent pattern, yellowish in center with two distinct, sublateral, blackish, longitudinal vittae. Legs brown with distinct pale bands at midlength and narrow blackish rings before apices on fore femur and midfemur, fore knee and midknee narrowly pale; hind tibia with basal and apical pale bands; tibial comb (fig. 16, d) with six spines, second from the spur longest.

Wing (fig. 16, b): Pattern as figured; 2RC pale on distal portion, but with small blackish spot just behind apex; r-m crossvein blackish; two pale spots in cell M1 past the pale spot straddling middle of vein M2. Macrotrichia sparse near distal wing margin; CR 0.68. Halter knob deeply infuscated.

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FIGURE 16–Culicoides for : a, Female antenna; b, female wing; c, thoracic pattern; d, tibial comb; e, spermathecae; f, female palpus; g, male parameres; h, male genitalia, parameres removed.

Abdomen: Blackish, cerci pale. measuring 0.063 by 0.049 mm. and Spermathecae (fig. 16, e) two plus 0.053 by 0.043 mm. rudimentary third and sclerotized Male Genitalia (fig. 16, h).ring; functional ones ovoid, tapering Ninth sternum with shallow caudoto short slender necks; unequal, median excavation, ventral mem

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brane not spiculate; ninth tergum rounded, with small apicolateral processes widely spaced. Aedeagus elongate, sides convexly swollen, apex truncate rather than with papilliform tip. Parameres (fig. 16, g) fused on proximal fourth, apices with minute fringing hairs. Distribution.—Mexico through Central America and South America to Colombia and Argentina; West

Indies (Jamaica, Puerto Rico); Trinidad (fig. 3). Type.-Holotype, male, Camp

Tortuguero, Puerto Rico (University of Puerto Rico collection).

West Indian Records.

JAMAICA: Bath, St. Thomas Parish, 19 July 1961, Maldonado and Farr, at light, 2 females; Delvey, St. Thomas Parish, 4 December 1962, T. H. G. Aitken, from donkeybaited trap, 1 female; 2 mi. w. Manchioneal, Green Hills, Portland Parish, 24 November 1968, R. E. Woodruff, light trap, 1 male; Mandeville, Manchester Parish, 4 April 1970, E. G. Farnworth, light trap, 2 females; Milk River Bath, Clarendon Parish, 19 November 1968, Woodruff, light trap, 1 female; Negril, Westmoreland Parish, 20 November 1968, Woodruff, light trap, 5 males, 10 females; Runaway Bay, St. Ann Parish, 16–28 February 1969, W. W. Wirth, light trap, 3 males, 3 females; Spanish Town, St. Catherine Parish, 28 May 1970, Farnworth, light trap, 1 female; Worthy Park Estate, St. Catherine Parish, 16 November 1968, Woodruff, light trap, 1 female; same, March–June 1970, Farnworth, light trap, 1,000's.

PUERTO RICO: Camp Tortuguero (Fox, 1949; Wolcott, 1951; type of fori).-Henry Barracks (Fox, 1952a),—Isla Verde Int. Airport (Fox and Garcia-Moll, 1961).Mayaguez (Wirth and Blanton, 1956a).-Fort Buchanan, 26 June 1952, F. S. Blanton, light trap, 1 female; Mayaguez, 9 January 1969, Walker and Drummond, light trap, 2 females.

Discussion.—In 1950 Ortiz gave the name Culicoides for n. sp. to a male specimen from Camp Tortuguero, Puerto Rico. It had been misidentified and figured by Fox (1949) as C. guttatus (Coquillett). In 1951 Ortiz redescribed C. fori from Caracas, Venezuela, and he invalidly designated types from that country. The type locality was erroneously given as Venezuela by Fox (1955a) and Wirth and Blanton (1956a, 1959).

Larval Habitat.—Williams (1964) reared C. foa'i in Trinidad from Sunny and shaded stream and ditch margins, from rain-soaked horse and cow manure, and from rotting cacao pods.

Biting Habits—Wirth and Blanton (1959) reported C. foa'i from a horse-baited trap in Panama and from an animal-baited trap in Brazil. It has been taken biting man in Trinidad.

Culicoides furens (Poey) (Figs. 1, 5, 17, and 30)

Oecata furens Poey, 1851, p. 236 (female; Cuba; fig. habitus, wing, head, antenna, mouthparts) –Townsend, 1893, p. 381 (Jamaica).-Cockerell, 1894, p.

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