1
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LEPIDOBARIS. —TRICHOBARIS.
shaped white scales; the under surface and legs also with intermixed minute and larger white scales, the latter condensed into spots on the sides of the third and fourth ventral segments and an annulus near the apex of one or more of the femora. Head finely punctate; rostrum (♂) stout, gibbous at the base, curved, about as long as the head and prothorax, rugosely punctate, ( ♀ ) more elongate and with the bare apical portion longer and much smoother Prothorax transverse, abruptly constricted in front, coarsely, closely punctate, and with indications of a smooth median line. Elytra moderately long, flattened on the disc, transversely depressed below the base, the subapical callosities not prominent ~ sharply, narrowly striate, the striae feebly punctate, the interstices flat, irregularly seriatepunctate, becoming rougher towards the sides. Pygidium densely punctate. Beneath coarsely and closely, the ventral segments more finely and sparsely, punctate, 1 and 2 with a depressed, ochreopilose space down the middle, and 5 with a truncated prominence in the 8entre at the apex, in the ♂. Prosternum as in L. acnisti.
Length 3 2/3, breadth 1 2/32 millim. (♀♂)
Hab. Mexico, Chilpancingo (H.H.Smith), Yolos and Juquila in Oaxaca (Salle).
Six specimens. Nearly related to L. opacipennis; theelytra shining, and clothed with intermixed very large scattered white and small blackish scales, the subapical callosities not prominent; the prothorax abruptly constricted in front, and with a densely squamose sinuous, marginal, whitish or ochreous stripe; the femora more or less annulate with white near the tip. The large fan-shaped scales on the elytra (fig. 20 b) are as broad as the interstices.
5. Lepidobaris nitidipennis, sp. n. (Tab. XX. figg. 21, 21 a, ♂.)
Very like L. latisquamis, but with the scattered subtriangular whitish scales on the elytra (fig. 21 a) much smaller (those on the disc not half the width of the interstices 29), the sinuous marginal stripe on the prothorax reduced to a narrow, oblique, interrupted streak, the median line represented by a short streak at the base, the rostrum and femora without dense patches of white scales; the rostrum less gibbous at the base, in the ♀ more slender, much longer, and with the apical half smooth; the elytra transversely depressed on the disc before and beyond the middle, finely striate, the interstices (the first excepted) confusedly punctate, the subapical callosities more prominent; the prosternal sulcus shallow or wanting; the ventral segments 1 and 2 with depressed, densely fulvo-pilose space down the middle, and 5 with a truncated prominence in the centre at the apex, in the ♂.
Length 3 1/24, breadth 1 3/42 millim. (♀♂)
Hab. Mexico (Mus. Brit.), Cordova, Toxpam (Sallé).
Two males and one female. This appears to be the Vera Cruz (or Atlantic slope) form of L. latisquamis, and one that requires a distinctive name.
TRICHOBARIS.
Trichobaris, Leconte, Proc. Am. Phil. Soc. xv. p. 287 (1876); Casey, Ann. N. York Acad. Sci. vi. pp 467, 561.
The species of this genus inhabit the Southern United States and Mexico, some of them being very destructive to potato and tobacco crops, as well as to various wild and cultivated Solanaceous plants. The true T. trinotata(Say), the "potato-stalk weevil"*, has recently reached as far north as Canada, but it has not yet been
*For an account of the habits and distribution of this species, see Chittenden, U.S. Dep. Agric., Div. Ent., Bull. no. 33, n. ser. pp. 9, l0 (1902).
3GG2
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RHYNCHOPHORA
seen south of Texas, and the Mexican insects standing, under that name in collections are referable to T. vestita or T. soror. The described forms are difficult to distinguish; those inhabiting Mexico may be separated thus—
a. Prothorax with a small denuded spot on each side at the base,
rarely obsolete.
a'. Prothorax usually with a large 1iartially denuded space on the
flanks; rostrum short and more or less curved in both sexes;
body flattened above.
a2. Ventral segments 3 and 4 bare at tile base, the vestiture of
the basal depression of ♂ different from that of the rest
of the surface ...... ……………………………. vestita, Boh.
b2. Ventral segments 3 and 4 with their median third bare, the
vestiture of the basal depression of ♂ similar to that of
the rest of the surface ...... ……………………….. . . . mucorea, Lec.
b'. Prothorax with at most one or two small bare spots on the
flanks, usually entirely albosqutmose.
c2. Rostrum short and curved in both sexes; body somewhat
convex above, with the vestiture denser and rather coarse.
d2. Rostrum short and feebly curved in ♂, much longer and
almost straight in ♀; body flattened above, with the
vestiture finer ...... …………………………… . soror, sp. n.
b3 Prothorax without denuded spots at the base; body narrow.
c3. Vestiture moderately coarse, above and beneath…………………………..pellicea, Boh. (texana, Lec.)
d3. Vestiture coarser, the scales on the under surface broader ………….…….cylindrica, Casey.
1.Trichobarisvestita. (Tab. XX. fig. 22, ♂)
Baridius vestitus, Boh. In Schönh. Gen.Curc. iii. p. 718' (part.) (nec op. Cit. Viii. p. 171, ♀2 )
Hab. Mexico' (Truqui, inMus. Brit.).Guanajuato, Toxpam, Etla(Sallé), Orizaba(H.H. Smith), Jalapa(M. Trujillo), Mexico city, Cerro de Plumas, Oaxaca(Höje), Cuernavaca, Cortova (U.S. Nat.Mus.), Puente de Ixtla(Wickham), Tehuantepec(Mus. Brit.).
The name vestita ishere applied to the form common in Vera Cruz and Oaxaca; the female subsequently described in Schonherr's work 2 is no doubt referable to, T. soror. The present species (sunk as synonymous with T trinotata, Say, by Leconte, and queried as possibly identical with T. mucorea, Lec., by Casey) has the rostrum short and abruptly bent downward from the base in both sexes (fig. 22), the prothorax usually with a large space on the flanks almost bare, and the depressed space on the basal half of the abdomen of the male thickly clothed with coarse, long, radiating scales. T.vestita is a little less elongate than T.mucorea, the rostrum is less curved (appearing more abruptly gibbous at the base), the median space on the ventral segments 3 and 4 is denuded at the base only, and the depression of the male is clothed
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TRICHOBARIS.
with modified scales. In the single specimen from Cuernavaca the vestiture of the upper surface is dark brown, except at the sides of the prothorax, where it is white, and one (♀) from Guanajuato wants the bare space on the propleura.
2. Trichobaris mucorea.
Baridius mucoreus Lec. Proc. Acad. Phil. 1858, p. 79'; 1868, p. 3642.
Trichobaris trinotata, var. mucorea, Lec. Proc. Am. Phil. Soc. xv. p. 2883.
Trichobaris mucorea, Casey, Ann. N. York Acad. Sci. xv. pp. 562, 5644.
Hab. North America, Southern California and Arizona4, Texas; Lower California4.—Mexico, Mexican boundary (Morrison), Ventanas (Forrer), San Blas (U.S. Nat. Mus.), Durango city (Höge).
Specimens of this species (♀♂) from San Blas and other localities in N.W. Mexico agree perfectly with those before me from California and Texas. The vestiture of the ventral depression of the male, as stated by Casey, is uniform with that of the rest of the under surface, and the median space on the segments 3 and 4 is almost entirely bare. The San Blas examples are labelled as having been found on tobacco. T. mucorea isknown in the United States under the name of the “Tobaccostalk weevil,” and it is also said to attack Solanum carolinense and Datura stramonium and D. tatula [cf. Bridwell, U.S. Dep. Agric., Div. Ent., Bull. no. 44, pp. 4446 (1904)].
3. Trichobaris compacta.
Trichobaris compacia, Casey, Ann. N. York Acad. Sci. vi. pp. 563, 566'.
Hab. North America, Southern California and Arizona', New Mexico.— Mexico, Mexican boundary (Morrison), Pinos Altos in Chihahua (BuchzanHepburn), Tres Marias Is., Presidio, Ventanas (Forrer), Durango city (Hoge).
Specimens from Durango differ from those from the other Mexican localities, as well as from the examples before me from California and Arizona, in having small partly denuded spots on the flanks of the prothorax and the vestiture of the upper surface brownishochreous or brownishcinereous. T. compacta is less elongate and more convex than T. mucorea, the vestiture is a little coarser, and the ventral depression of the male is deeper, and more sparsely and not so coarsely squamose. Cockerell has found it upon Datura meteloides in New Mexico and Bridwell records it as breeding in the seedpods of the jimson (Datura).
4. Trichobaris soror, sp. n. (Tab. XX. figg. 23, 23 a, ~ .)
Baridius vestitus, Boh. in Schönh. Gen. Curc. viii. 1, p. 171 (♀, nec ♂) '.
Oblong, flattened above, black, rather dull; thickly clothed with narrow cinereous or pale brown scales, which are transversely arranged on the prothorax and obliquely so on the elytral interstices, the vestiture of the under surface and legs sparser, denser, and wholly white, that of the antennal club in great part brown, the prothorax with a small spot on each side at the base, the scutellum, and sometimes a spot on each shoulder, almost bare, the ventral segments 3 and 4 with a narrow bare transverse space
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RHYNCHOPHORA
in the middle at the base. Head glabrous, finely punctate, transversely grooved between the eyes; rostrum gibbous at the base, (♂) short, stout, and feebly curved, (♀♂) longer than the head and prothorax, more slender, and almost straight, in both sexes closely punctate and squamose, the antennae, inserted at (♀) or beyond (♂) the middle, the antennal club acuminateovate and moderately large. Prothorax transverse, constricted in front and slightly sinuate at the sides at about the middle; densely confluently punctate, and sometimes with indications of a faint median carina. Elytra flattened on the disc, rather broad, parallelsided, separately rounded at the apex, and with rather prominent subapical callosities; finely punctatestriate, the interstices densely punctate. Beneath densely punctate. Prosternum slightly depressed along the middle. Ventral segments 1 and 2 broadly and shallowly excavate, and clothed with rather narrow scales, in the ♂, the vestiture of the corresponding space in the ♀ similar to, that of the rest of the surface.
Length 4 4/5 – 6 ½, breadth 22 7/8 millim. (♀♂)
Hab. Mexico11 (Truqui, inMus. Brit.; Herrera, in U.S. Nat. Mus.), Durango (Dr. Palmer, in U.S. Nat. Mus.), Guanajuato, Parada (Sallé), Matamoros Izucar (Höge),Tehuantepec (Mus. Brit.).
Numerous examples, the selected types (♀♂) being from Guanajuato. Very like T. mucorea, Lec., but with the rostrum less curved in the male, and elongated and almost straight in the female, the propleura with, at most, one or two small partially denuded spots on the flanks, the ventral segments 3 and 4 with a narrower bare space at the base. The long and almost straight rostrum of the female separates T. soror from all the other species described by Casey.
5. Trichobaris pellicea. (Tab. XN. figg. 24 *, 24 a, ♂)
Baridius pelliceus, Boh. in Schönh. Gen. Curc. viii. 1, p. 160 1.
Trichobaris texana, Lec. Proc. Am. Phil. Soc. xv. p. 2882 ; Casey, Ann. N. York Acad. Sci. vi. pp. 563, 566 3.
Hab. North America, New Mexico, Colorado 3 Texas 2,3. – Mexico1 (Truqui, in Mus Brit.), Durango city (Hoge), Matamoros Izucar (Sallé), Mexico city (U.S. Nat. Mus ), Puente de Ixtla (Wickham).
The "type" of this species, communicated by Dr. Sjöstedt, is labelled " Calif.," and it does not differ from the N. American T. texana, Lec. This insect may be known by the dense uniform vestiture of the upper and under surfaces, the scutellum only being partially denuded, and its narrow, rather convex shape. The ventral depression of the male is clothed with narrower setiform scaJes. In some of the Mexican specimens the vestiture of' the upper surface is brown with a few white scales intermixed, the sides of the prothorax being, also white. T. texana, according to Bridwell, attacks the bull nettle (Solanum rostratum). The length varies from 3 1/56, and the breadth from 1 1/3 – 2 1/3 mm.
6. Trichobaris cylindrica.
Trichobaris cylindrica, Casey, Ann. .N. York. Acad. Sci. vi. pp. 563, 567'.
Hab. North America, Arizona'.— Mexico, Monclova in Coahuila (Dr. Palmer).
* Foreshortened in our figure.
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TRICHOBARIS.—ANOPSILUS.
A single specimen (♂) from Coahuila seems to belong to this species. It differs from T. pellicea (texana) in having larger scales, on both the upper and under surfaces.
CYANOBARIS, gen. nov.
Mandibles short, decussate; rostrum (fig. 25 a) very short and stout, almost straight, abruptly, transversely gibbous at the base, widening outwards, the scrobes rapidly descending, the antennae inserted towards the apex, the antenna! club ovate; prothorax shortly tubulate at the apex and broadly subtruncate at the base; scutellum transverse, free, prominent; elytra a little wider than the prothorax, very elongate; pygidium very large, exposed, declivous; prosternum unimpressed behind the transverse subapical groove, the basal portion short; mesosternum long and depressed, the mesometasternal suture in a line with the posterior margin of the middle coxae; anterior coxa, exserted, narrowly separated; femora linear, sharply dentate, the posterior pair nearly reaching the third ventral suture; tibiae unguiculate; tarsal claws subconnate at the base; body very elongate, narrow, depressed, linear, metallic.
Type, C. rufiventris.
This genus seems to be related to Lichnus, Lacordaire, but it is best placed in the section "Baridiides vrais" of that author. The general shape is that of a Cossonid.
l. Cyanobaris rufiventris, sp. n. (Tab. XX. figg 25, 25 a.)
Opaque, alutaceous, cyaneous, the abdomen rufous and moderately shining; almost glabrous above, the punctures on the under surface and legs each bearing a smallhairlike scale. Head densely punctate: rostrum scarcely longer than the head as seen in profile, rugosely punctate. Prothorax very little broader than long, gradually narrowing from the base to the tubulate apical portion, the base feebly sinuate on each side; closely impressed with coarse rounded punctures, except along the median line. Elytra parallel for about threefourths of their length, hastened down their inner half the humeri rounded; shallowly punctatestriate, the interstices flat, rather coarsely and closely uniseriatepunctate, the puncturing becoming coarser and denser towards the base. Pygidium densely, rugulosely punctate. Beneath very coarsely and closely, the ventral segments 25 more sparsely and finely, punctate. Legs rugosely punctate, rather slender.
Length 6½, breadth 2 millim. (♀ ?)
Hab. MEXICO, Santecomapan* in Vera Cruz (Sallé),
One specimen.
ANOPSILUS.
Anopsilus, Kirsch, Berl. ent. Zeitschr. 1X69, p. 218.
Balbus, Pascoe, Ann. & Mag. Nat. Hist. (6) iv. pp. 322, 323 (1889).
The type of Anopsilus is A. bonvouloiri, Kirsch, and that of Balbus, Centrinus conicollis, Boh. The species of this genus have large, prominent, subcontiguous anterior coxae, and the male of A. conicollis, like that of various other S. -American forms, has two short prosternal spines. Centrinus suberbificus, suspensus obniger, asphaltinus, capreolus, and oblongus, Boh., probably belong here. They are all oblong, polished, black, almost glabrous insects, with a more or less conical prothorax, &c.
* Sometimes written "Santa Maria Comapa” or "Santa Maria Acomapan."
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Trichobaris LeConte 1876287
Trichobaris LeConte 1876287
Gender: F
Type species: Baridius trinotatusSay,1831; Subsequent designation (Barber, 1935-8)
Distribution: Mexico, Canada, USA (NE, NC, NW, SE, SW)
Revisions: Champion 1909 (BCA); Barber 1935
Systematic position: Curculionidae: Baridinae: Baridini: Baridina (Alonso-Zarazaga & Lyal, 1999)
Central American species included in most recent catalogue (O’Brien & Wibmer, 1982):
championi Barber 193519
compacta Casey 1892566
brevipennis Casey 1920379
densata Casey 1920381
retrusa Casey 1920380
utensis Casey 1920380
page 189:cylindrica Casey 1892567.
major Barber 193514
mucorea (LeConte) 185879 (Baridius)
apicata Casey 1920376
arida Casey 1920377
latipennis Casey 1920376
nanella Casey 1920375
rugulicollis Casey 1920378
striatula Casey 1920374
pellicea (Boheman) 1844160 (Baridius)
pueblana Casey 1920382
soror Champion 1909413.
vestitus: (Boheman) 1844171 (Baridius) [misidentification, not Boheman 1836]
texana LeConte 1876288
amplicollis Casey 1920383
trinotata (Say) 183117 (Baridius)
insolita: Hayes 193528 [misidentification, not Casey 1892]
jejumosa: Hustache 193832 [error]
jejuniosa Casey 1920377
plumbeus (LeConte) 1868364 [in key] (Baridius)
vestitus (Boheman) 1836718 (Baridius)
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Trichobaris championiBarber 193519
Distribution: Mexico
Most recent placement and synonymy used: O’Brien & Wibmer, 1982
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