DARK-FOOTED CULICES ; ABD. PALE MEDIAN STRIPE -463 Venter grey. Fork-cells of wings short Tarsal claws of J , very small, equal, and simple.
? .—Head brown, with pale curved, and black upright forked scales, and oi'bits formed of white curved scales ; antennae brown, with pale bands, basal joint large and testaceous, dark on the inside ; palpi blackscaled, testaceous at the base ; clypeus chestnut-brown ; proboscis dark brown scaled, short, a little longer than the antennae ; eyes deep purplishblack. Pleurae pale silvery-grey. Legs black, unhanded, base and venter of femora grey, knee and tibial spots orange. Wing with fork of II internal to that of IV, its cells two and half times the length of tlie stem ; and with 4 far internal to 3. Halteres with yellow stem and dark knobs. Venter grey. Length. — 4 mm.
Habitat. — Grenada, West Indies.
128. CULEX RIMOSUS, Theobald (Monog. II, p. 327). (Kept. Liverpool School Trop. IMed. 1901.)
Tarsi dark brown, with their undersides somewhat yellowish. Thorax deep brown. Abdomen deep brown, with metallic bronzy and violet reflections, with four white apical lateral spots on the hinder segments, and grey venter. Legs deep brown, unhanded. Wings with rather broad scales, like G. atratus, Theobald. Tarsal claws of $ , small, curved, equal and simple.
2 . — Head dark brown, with narrow curved duU-gi-ey scales and numerous short upright black ones ; clypeus black, luith a transverse sulcus ; antennae brown, with reddish-brown basal joint ; proboscis black, testaceous at the apex ; palpi rather thick, black ; scutellum deep ferruginous, with the margin grey. Pleurae greyish-brown. Legs, with the coxae and undersides of femora very pallid ; elsewhere deep brown. Halteres yellowish, with dusky knobs. Length. — 2*8 mm. Habitat. — Old Calabar, West Africa.
Observations. — Mr. Theobald considers it probable that the peculiarities of the wing-scales of this species, and of his C. atratus from Jamaica, may be of generic value.
Subdivision vii. — Culices tvith unhanded tarsi and the abdomen unhanded, hut loith a pale median line.
129. C. trilineatus, Theob. Thorax gold-coloured, with three dark lines. Abdomen ochreous m the middle, dark at the sides. Venter yellow.
130. C. ochraceus, Theob. Abdomen black at the sides, with a sharply-defined, serrated yellow median stripe. Thorax black, with broad golden lateral lines. Venter yellow.
464 GNATS OR MOSQUITOES — CHAPTER XIII 129. CULEX TRILINEATUS, Theobald (Monog. II, p. 105). Tarsi uniformly dark brown. Thorax clothed with golden and creamy scales, and adorned by a pair of broad dark sub-median lines, separated by a creamy interval on its anterior three-fourths. Abdomen bright ochre-yellow in the middle and nearly black at the sides, which show as even-bordered black lines from above. Wings with brown scales. Tarsal claws of ? , symmetrical ; those of fore and mid legs with extra teeth, those of the hind pair simple.
2 . — Head with linear curved, and erect forked scales alike yellow ; clypeus pale ferruginous ; proboscis yellowish-brown, dark at the apex ; palpi yellowish, with a few black scales and hairs at the apex, and a dark band at the base. Pleurae ferruginous, with a few whitish scales. Legs unhanded, ochreous basaUy, dark brown on the tibiae and tarsi ; kneespots pale. Halteres ochreous, with paler stems. Venter yellow. Length. — 5 mm.
Habitat. — Thayelmyo, Upper Burmah.
130. CULEX OCHRACEUS, Theobald (Monog. II, p. 103). Tarsi uniformly deep brown. Thorax nearly black, with broad lateral golden-scaled lines. Abdomen pale yellow, the segments with triangular black patches with their apices forwards, so as to form a broad median reserrate pale stripe, bounded by serrated black lines {vide Plate xvii, fig. 7). Wings black, intermixed with ochreous scales, the latter specially numerous on the costa. Tarsal claws of ? , symmetrical, each with an extra tooth. 5 . — Head, with narrow curved, and erect forked scales, yellow on the occiput but black on the nape ; the lateral flat-scaled patches yellowish, with black internal boundary; with narrow creamy eye-borders ; palpi clothed with mixed brown and yellowish scales, the last joint minute and nipple-shaped. Pleurae nearly black, with golden and white patches. Legs ochreous with intermixed brown scales, the long joints pale at the base and darker at their apices; with small knee-spot*s. Halteres and venter both ochreous. Length. — 4 to 5 mm. Habitat. — Salisbury, Mashonaland.
Subdivision viii. — Cidices ^cith ■unhanded tarsi and tJie abdomen unadorned.
a. With the abdomen pale.
131. C. bicolor, Meig. Abdomen impure pale yellow.
CULICES WITH TARSI AND ABD. UNADORNED 465 b. With the abdomen dusk}'.
132. C. pseudocinereus, Theob. The junctions of segments reddish, giving a quasi-banded appearance. Tliorax grey, with indistinct Hnear marking. Pleurae dark grey, with a broad white Hne above the middle leg. • 133. C. metallicus, Theob. Thorax black, with silvery scales in front and brown behind. Pleurae with some brilliant white scales. Abdomen metallic purple.
134. C. Frenchii, Theob. Thorax chestnut-brown. Pleurae with indistinct paler patches. Abdomen sooty. Venter yellowish. 135. C. invidiosiis, Theob. Thorax brown; the pleurae paler. Abdomen nearly black. Venter brown, reddish at the base. 136. C. inveniistus, Theob. Thorax dark-brown. Pleurae yellowish. Venter rather pale. Mid femora dilated.
137. C. nigripaljns, Theob. Thorax chestnut. Pleurte pale brown. Abdomen almost black. Venter grey.
138. C. longipes, Theob. Thorax dark chestnut. Pleurae pale brownish-grey. Abdomen dusky. Venter yellowish. 139. C. fusculus, Zetterstedt. Thorax ferruginous. Pleurae dark slate coloured. Abdomen black.
31. CULEX BICOLOR, Meigen ("S.B."p. 1; " F. E." p. 277). = Culex marginalis, Stephens, 1825 (?).
Tarsi unhanded ; thorax dorsally greyish-chestnut, with traces of darker longitudinal streaks ; abdomen dorsally, uniform pale yellow. Said to be less markedly yellow than C. liUescens. Proboscis brown ; palpi and antennae of the 3" i yellowish-brown. Coxae yellowish, especially at the base and beneath ; tibiae darker yellow, and the tarsi brown. Wings brownish-j-ellow. Halteres yellowish. Abdomen dorsally, pale dirty yellow. Length. — 7 to 8 mm. Habitat. — Northern Europe.
NoTE.^Inadequately described from types in confessedly bad condition. Mr. Theobald appears to believe that the description refers to nibbed specimens of C. pipiens, L.
132. CULEX PSEUDOCINEREUS, Theobald (Monog. II, p. 62). Tarsi uniformly brown. Thorax clothed with grey, narrow curved scales, with three indistinct dusky longitudinal lines. Abdomen unhanded and unspotted, deep dusky-brown, the junctions of the segments rather testaceous, giving a quasibanded appearance. Fore and mid ungues of the g- , very unequal, the larger with a long tooth ; hind ungues equal, simple, small.
30
466 GNATS OR MOSQUITOES —CHAPTER XIII ^ . — Head brown, covered with narrow curved pale grey scales, and with a broad white border round the eyes, spreading out laterally, and with numerous small black upright forked scales ; antennae grey, with narrow brown bands and brown verticiUate hau-s ; proboscis black ; palpi a little longer than the proboscis, dark brown, the penultinaate joint very short, not more than one-third the length of the apical joint, the latter with a few long brown hairs on each side, the former also with a few thinner ones, the long antepenultimate joint with some very short thick bristles on the apical half and a narrow pallid band on the basal half, its base expanded. Metanotum dark brown. Pleurae deep greyish-black, with a broad line of white scales running down to the base of the middle leg, and another smaller patch on the metapleura. Leg sunbanded, dark brown, bases and venter of femora pallid. Venter dark brown. Halteres with yellow stems and dark knobs. Length. — 4'8 mm. Habitat. — Salisbury, Mashonaland ; February.
133. CULEX METALLICUS, Theobald (Monog. II, p. 63). Plate xvii, fig. 4, Tarsal claws, S' and ? ; 4b, Thoracic adornment ; 4b, External ^ genitalia.
Tarsi uniformly brown. Thorax black, with long curved hairlike silvery scales on the anterior half and long bright brown ones behind. Abdomen flat, smooth, with metallic purple scales. Ungues of the ? , rather long, equal and simple; of the ^ , unequal in the fore and mid legs, equal in the hind. Wings thickly scaled along the veins and with lateral long scales, dark along the costal border.
Head and appendages dark brown, the former with the nape clothed all over with mixed pale grey curved linear, and black erect forked scales ; palpi of (? , with an indistinct band near the base. Legs deep brown, yellowish at the base and on undersides of femora. Palpi black with some brilliant white scales. Halteres deep yellow on the stem, with fuscous knobs. Looks much Uke a Janthinosoma, but the legs are smooth ; differs from C. gelidus in having the abdomen metallic purple. Length. — About 4-7 mm.
Habitat.— Bonny, West Africa; in the bush.
134. CULEX FRENCHII, Theobald (Monog. II, p. 66). Tarsi uniformly brown. Thorax deep bright chestnut-brown, with pale golden scales scattered over its surface, three double rows of black bristles, two median bare lines, and a curved bare patch on each side of the mesonotum. Abdomen dusky black, unhanded ; venter yellowish.
CULICES WITH TARSI AND ABD. UNADORNED 467 ? . — Head dark brown, covered with a few pale creamy curved scales, golden upright forked ones in the middle, and forked black ones over the whole surface ; palpi rather long, black, testaceous at the base ; clypeus brown ; proboscis black-scaled ; antennae dark brown, with the basal joint, and base of the second, reddish yellow ; pubescence pallid, hairs black. Scutellum bright testaceous. Pleurae bright brown, with indistinct paler patches. Legs with pale coxae and bases to the femora, kneespots orange, rest dark brown, with dull ochreous reflections. Halteres entirely ochreous. Venter yellowish. Length. — 5 mm. It is the only Australian species at present known, with the legs and abdomen alike unhanded.
Habitat. — Victoria, Australia.
135. CULEX INYIDIOSUS, Theobald (Monog. II, p. 329). (Kept. Liverpool School Trop. Med. 1901.)
Tarsi uniformly deep brown. Thorax deep chestnut-brown. Abdomen biackish-brown, quite unadorned. Tarsal claws of ? , small, equal and simple. Much resembles ^des niger in colouration.
? . — Head deep brown, almost black ; the occiput covered with dull ochreous grey narrow curved, and black upright forked scales ; flat scales of lateral patches, small, dull- white ; a narrow rather indistinct grey border round the eyes ; clypeus deep chestnut-brown ; proboscis deep blackish-brown ; palpi short, densely black scaled ; antennae brown, basal joint testaceous in the centre. Scutellum rich shiny brown, with six bristles to the mid lobe and four on each of the lateral ; pleurae paler brown. Legs deep brown ; coxae and bases of femora pale. Halteres ochreous, with dusky knobs. Venter brown, reddish at the base, very hirsute ; lateral scales violet-grey in some lights. Length. — 3*2 mm. Habitat. — Bonny, Africa ; May.
136. CULEX INYENUSTUS, Theobald (Monog. II. p. 330). (Kept. Liverpool School Tropical Med. 1901.)
Tarsi uniformly dark brown. Thorax dark brown, showing when denuded three dark lines. Fore and mid femora much dilated. Tarsal claws of ? , small, much curved, equal and simple. ? . — Head almost black, with narrow ochreous grey curved scales, blackish and brown thin upright forked ones, white flat scales at the sides, and a narrow white border round the eyes ; eyes black ; palpi short, dark brown ; proboscis rather short, dark brown, testaceous at the tip ; antennae dark brown, basal joint black, last two joints very hairy ; clypeus black. Scutellum greyish- brown ; pleurae yellowish-brown,
468 GNATS OR MOSQUITOES — CHAPTER XIII rather darker in front. Legs dark brown, with pale grey bases. Venter rather pale. Length. — 3-5 mm.
Habitat. — Degania, West Africa.
Note. — The dilatation of the femora may be of generic value. 137. CULEX NIGRIPALPIS, Theobald (Monog. II, p. 322). Tarsi uniformly dark brown. Thorax chestnut-brown. Abdomen almost black, unhanded, grey ventrally. Proboscis almost black ; palpi longer than proboscis, black, last two joints with black hairs, acuminate. Fore and mid tarsal claws of $ , unequal; the internal larger, and alone with an extra tooth, those of hind legs equal and simple.
(J . — Head dark brown, with golden linear curved scales on the sides, mixed, on the nape, with numerous black forked scales ; lateral, flatsealed areas grej'ish, extending on to the sides of occiput ; antennae banded grey-brown, with black verticils ; proboscis black, reddish at apex ; the palpi exceedmg it in length by nearly all their last two joints ; the latter black with traces of a pale band near the base of the middle joint, last joint a trifle shorter than the next, and both of them armed with stiff black bristles. Scutellum yellowish, with six bristles on the midlobe ; pleurae pale brown. Legs nearly black, except the greyish undersides of the femora. Wings with fork of II four times as long as its stem, its bifurcation well inside that of IV, and 4 more than twice its length inside 3. Length. — 2-5 mm.
Habitat.- — St. Lucia, West Indies.
138. CULEX LONGIPES, Theobald (Monog. II, p. 68). Tarsi uniformly dark. Thorax dark chestnut-brown, with curved black scales, more or less longitudinal ornamentation, and long black bristles ; pleurae pale brown to grey, with long black bristles. Abdomen dusky black, unhanded ; venter yellowish. Legs unusually long, dark brown ; coxae and venter of femora pale. Tarsal claws of ? , very small, simple, and equal. Fork cells of wing short.
$ . — Head dark brown, with white eye-borders, and the curved and erect scales of the nape alike black ; clypeus castaneous ; cephalic appendages, uniformly dark brown. Pleurae pale brown to grey, with numerous black bristles. Venter yellowish. Halteres, with pale brown stem, and the knob learly black. Length. — 4*3 mm. Habitat, — Singapore (one specimen taken in a house).
PLATE XVI.
^^ ^ ^ cT " m^^ 1, Stegomyia i>ii)ersalata, sp.n. ; 2, Cule.r triticniorhynchus, sp. u. ; 3 C. impellen's, Walk. ; 4, C. tigripes, de Grandpr6 et de Charmoy ; 5, C Vishnuii, Theob. ; 6, C. annulioris, Theob. ; 7, C. plumosus, Theob. ; 8 C. dissimilis, Theob. ; 9, C. hirsutipalpis, Theob. ; 10, C. vigilax, Sku.se 11, C. marinufi, Theob. ; 12, C. cantans, Meig. ; 13, C. vexans, Meig. 14, C. vagans, Wied. ; 15, C. occidentalis, Skuse ; 16, C. albitarsis, Theob. 17, C. confirviahis, Arribdl ; 18, C. serratus, Theob. FaceriateXVIT.,p.46S.
PLATE XVII.
jsatm 1, C. pulchriventer, sp. n. ; 2, C. lateralis, Meig. ; 3, C. nigrochctic, Theob. 4, C. metalicus, Theob. : 5, C. luteolateralis, Theob. ; 6, C. impudicus, Ficalbi ; 7, C ochraceus, Theob. ; 8, C. concolor, Desv. ; 9, C. Salisburiensis Theob. ; 10, C. alholineatus, sp. n. ; 11, C. virgultus, Theob. ; 12, C. viridi venter, sp. n. ; 13, C. Zombaensis, Theob. ; 14, C. nigritullus, Zetterstedt. FacePlateXVI.,p.46S.