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ANNOTATED LIST OF FOREST OF BRITISH COLUMBIA PART X-NOTODONTIDAEl

D. A. Rosso AND D. EVANS3

The larvae of this family feed ex­ Ichthyuro albosigma Fitch. Populus clusively on broad -leaved h 0 s t s, tremuloides ( 4) , Salix sp. ( 1) , Alnus chiefly of Salicaceae and Betulaceae. s p . (1) . Squilax, Kersley, Mar guerite, Several species are commonly found Prince George, a nd southern V.I. One on mE:m bers of Rosaceae as well. f!"Om Mile 49 Dawson Rd., Y.T. DatanCl ministra and con­ LARVA : young insta l's prominen tly cinna occasionall y have been suffi­ humped, pale green with fine red lines ciently numerous to cause noteworthy and a bdominal segments 1, 3, and 8 clefoliation. also red. Lat e insta l's .s tippled mauve­ Notodontid larvae are quite similar grey and brown, with indistinct r.o th e cutworms, Noctuidae, but us­ brown lines pale edged; large black ually have more elongate h eads. The spiracles; shallow yellow tubercles, majority are strikingly marked ; most long silvery setae; the head la rge and ~ p ec i es h ave prominences. Setae on mottled . the upper body are prima ry, except­ ing Datana and Ichthyura which Ichthyura brucei Hy. Ed. Populus ha ve a light clothing of fine second­ tremuloides, Salix sp. (1) . Central In­ ary ha irs. There are ventral prolegs terior. LARVA: head black, excepting on A3-6 ; and the anal prolegs are unpigmented inverted Y a bove and more or less reduced or modified. The bordering frons; small transverse anal prolegs may be held u p a t rest, swellings on dorsum of Al and 8, lat­ Rnd are not used by Schizura or Cer ­ eral portions of pro thoracic shield, !lrCl fo r locomotion. The eversible ~ mall supraspiracular patches, and gland on the prothoracic venter is spiracles, black. Head and body branched on some species. Most noto­ Ji g'hUy clothed with fine, moderately dontids overwinter as larvae in co­ iong, white hairs. coons.

Ichthyuro opicolis Walker. Populus Datana ministra Dru. Yellow-neck­ fremuloides (1) . Mile 50 Big Bend ed cat erpillar. B etula spp., Amelan­ Highway. LARVA: h ead brown, ex­ r: hier sp ., spp., Prunus sp . cepting unpigmented configura tion ( 1), Salix sp . (1) . Central portion a bout the frons ; no swellings a ppar­ Southern Interior. LARVA : 1% ent; pronotal shield with pair of inches; head and body black (body brown patches; body dra b cream­ reddish-brown in earlier instars); brown; faint dorsal lines. Head and l'rothoracic shield yellowish-brown; body moderately clothed with fine yellow subdorsal, supraspiracular , short white ha irs. ~ ub s pir ac ul a r , subventral and ventral !ines; body sparsely clothed with long Ichthyuro strigoso Grote. Populus grey h airs. t r emuloides (1) . Wasa. LARVA : un­ known to writers. Odontosia elegons S t k r . , Southern Interior, a nd 1 Contribution No. 774 , For est. Ento mology a ncl Pathology Branc h. De partmen t. of For estry, 01· Cuisson Creek. LARVA : 13/4 inches; tawa. Canada. head and thorax reddish to yellowish 2 Fo rest. Entomoiog)· Laboratory, Vcrnon, B. C. brown, glossy; dorsum of body mot­ 3 Forest En tom o logy a nd Pathology Laborat o r ~ l : Victoria, R.C. tled brown, venter of a bdomen cream; PI:tll . j·: .\T()\H II .. Silt. I ~J :lT . t 'Ol. l · .\I I: I .\. "t il.. :)~ (l ~ lti l I. I)u . 1. !!II;1

brown pro thoracic shield ; brown ern B.C. ancl V.!. LARVA: 11 2 inch es; shallow tra n sverse r id ges on A2 a nd cream and brown h ead and body; A8: brown blotch a bout spiracles a bdomen may be tinged with green : clown to prolegs on A3-6. brown M on head, X between arms; hump a t posterior margin of m eta­ Notodonta simplaria Graef. Sali:r. thorax; elongate forked protuber ance <; p. ( 3) , Populus tremuloides ( 1) . on Al bent forward ; forked hump on Golden, Ochiltree, La rdo, and Burns A5 and 8. White V on A6 a nd 7. Lake. LAR VA : l Y2 inches ; heacl tap­ ered to vertex, stippled with bla cl< ; body purplish, mottled; pale diagonal Schizura ipomoeae Doubleday. Bet­ lines; conical humps on A2, 3 and 8; ula papyri/era, Alnus spp. (3) , Salix faint pale subspiracular stripe run­ ~p . , A m elanchier sp. (1). Sou theast ­ n ing down to tip of ventral proleg on prn B.C. (J ones, 195 1, also records it AG. Black a bove bases of thoracic from southern V.I. ) . LARVA : 1% legs; black double dorsal stripe on inches; brown and green with mark­ thorax and on h umps of A2 and 3. in gs on dorsum of abdomen; a pair of black longitudina l lines on each Pheosia rimosa Pa ck. Salix spp., i' ide of the front of the head, with a Pop ulus tremuloides, P. trich ocarpa, reddish-brown X between; thoraX Betula sp. I nterior B.C. LARVA : about green, speckled with brown ; broken, 2 inches; green or yellowish-brown, rcddish-brown dorsal stripe with g"lossy; horn on A8 ; black tr ansverse white edge, split on thorax and div­ ba nd on T2 and A8 , may be broken ergin g on T1 ; pleura on T1 pa rtly on the former segment; thoracic legs brown; white dorsal patches on Al-4. r ed ; spiracles black, pale-ringed. sh ield -shaped on A2 and 3 and white broad-based V on A6-7; elongate Pheosia portlandia Hy. Ed . Va n­ short-forked tubercle on Al ; smaller couver Island. LARVA : u nknown to paired tubercles on A5 a nd 8. The writers. setae on this species a r e more prom­ inent than on the other three species. Nadata gibbosa A . & S. Betula spp., Sal i .1: spp., Alnus spp .. Quercus Schizura concinna S. and A. Red­ [Iarryana, Populus tl'ichocw'p(l ( 1). humped caterpillar. Salix spp., Betula Acer cir cinatum (1) , Prunus sp., Rosa spp., Prunus spp., Populus tremu­ spp. General throughout B.C. LARVA : loides, P. trichocarpa, Alnus spp .. 1% inches; head and body pale blu­ flcer glabrum and miscellaneo us ish -green, covered with a bloom ; other broad-leaved hosts. South­ [>ody flecked with yellow laterally; eastern B.C. Occasionally known to subdorsa l stripe, base of prolegs and completely denude single trees or posterior margin of suranal plate, c lump ~ of trees. LARVA : 1;:2 inches; pale yellow; no protuberances; setae head a nd transverse swelling on AI , min 1.1 te; spiracles small, reddish ­ a dull red ; body glossy, dull yellow brown. streaked with black or reddish­ brown ; subdorsal, supra - and sub­ Dicentria pallida Stkr. Vancouver spiracular stripes white, edged with Island. Hosts and larvae unknown to black; tubercles black, those on dor ­ writers. sum elongated . th e longest on AI. Schizura semirufescens Wlk. Alnus spp., Salix spp., B etula papyrijera (3) , Cerura occidentalis Lintner. Popu­ Quercus garryana ( 1) , Acer circinat­ lus trichocarpa, Salix spp. Kelowna. um (1) , Amelanchier sp. (1). South- HOllston, Vernon, Prince George, B.C. , and Ca r macks, Y.T . LARVA: Schizura unicornis A. & S. Alnus body 1 Y2 inches + Y4 inch stem apods; spp ., B etula spp., Salix spp., head brown, dark brown bar from spp., Prunus spp. (3) , A melanchier sp. (1) , Populus tremuloides. Southern ocelli to vertex; body green ; dorsal B.C. and V.l. LARVA : similar to stripe brown-edged with cream, ipomoeae. Head light brown with stripe broad a t front of TI, tapered darker brown longitudinal stripes to posterior mar gin of T2, the "ab­ from ocelli to vertices; thorax green, dominal saddle" broad est on A4 pleura of pro thorax partly brown, not wh ere it encompasses the spiracles; joined to dorsal stripe; abdomen light brown and olive green ; brown dorsal brown subventral patch es on prolegs stripe on thorax, split on prothorax of a bdominal segments; pair of ves­ but not diverging; whitish triangular, tigal subdorsal warts on TI ; small and truncated triangle-like markings slightly bilobed swelling on T2 . on dorsum of AI-3 ; narrow-based white dorsal V on A6 and 7; promin­ Cerura scolopendrina Boisd uval. ent forked tubercle on AI; paired Salix spp., Populus tremuloides. swelling on A5 with vestiges of tu­ bercles; pair of prominent tubercles Southern B.C. and V.l. and two rec­ on prominent swelling on A8. ords from Skeen a River Valley. LARV A: 1 Y2 inches + 1 '3 inch stema­ Gluphisia septentrionis Wlk. Popu­ pods; head brown, darkest near lus tremuloides, P . trichocarpa. Ver­ vertices; body yellow-green; dorsal non, Squilax, 70 Mile House, 83 Mile "stripe" purplish-brown, broad at House, Place Lake, Exchamsiks. front of TI, tapered to the posterior LARVA : Head yellow-green with or margin of T2, slightly interrupted at without black stripe on either side leading edge of T3. The "abdominal of front; body yellow-green; yellow saddle" broadest on A4 where it ex­ subdorsal stripe; reddish broken tends down behind the spiracles; a pa tches on dorsum of thoracic and pai!" of small subdorsal warts on T1 ; a bdominal segments - excepting Al "welling if present on T2, not bilobed . a nd sometimes A2.

The Ca lifornia Tortoise-Shell, Nymphalis Californica Bdv., on Vancouver Island

After an apparent absence of eight years not so noticeably as in 1952. this butterfly has again been seen in south­ At least some individuals hibernate here, ern Vancouver Island. It was first noticed for one was seen on the warm southern on September 8, 1960, and was last seen on £Iope of Mo unt Douglas on January 26, October 18. The butterflies frequented high­ 1961. ways, sheltered va lleys, and slopes, usually Following the immigration of 1952, this flying back and forth, settling occasionally butterfly was frequently seen up to April on roads, fences or bushes. While not 23, 1953, after which it disappeared. observed to visit fl owers, they so ught damp Wh ether the same pattern will eventuate places and over·ripe fruit such as black­ in 1961 remains to be seen. berries and apples. A slight tendency to (; pl)I"!I(' £1. .1-/ (11"(/.1/. P l"lI l"illf"i,t/ .I/IIS' ·1I111 drift E'astward was at tim es indicated but ( 1(/,/.). l"i"'''l"ili . 11.1 '.