STATE OF CALIFORNIA

Volume XXVI Number 3

BULLETIN OF THE.

DEPARTMENT OF AGRICULTURE

Sacramento, California : : : July, August, Septemker, 1937

47627

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BULLETIN-DEPARTMENT OF AGRICULTURE 335

336 BULLETIN-DEPARTMENT OF AGRICULTURE

left ocelli. Fig. 8a. Larva, subdorsal view, thorax and first two abdominals. Fig. Sb. Larva, sublateral view a s in 8a. Fig. 9a. ;Larva, su~bdorsal view, last five abdominals. Fig. 9b. Larva, sublateral view as in 9a.. Fig. 10. larva, left side of last three abdominals. Fig. 11. Larva, rear view of three last abdominals. Fig. 12. Left propod, rear view. Fig. 13. Left central proleg. Big. 14 . Left anal proleg. Fig. 15. Venter of segment A9 showing small accessory setae in connection with seta VII.

Pupa 84-92 mm. long, brown, robust, somewhat flattened dorsoventrally ; anten- nal base with corrugated boss; labial palpi visible a s a small central triangular plate a t junction of maxillae bases; wings, antennae, and hindlegs ending on fifth ventral; fifth, sixth, and seventh abdominal segments articulate anteriorly with lateral condylic movement; ninth segment set with area of small hooked-setae on each side of genital aperture ; cremaster absent but small rounded point present with a few hooked hairs.

The presence of this Antaeotricha in California i s somewhat a t variance with the ideas expounded in California Microlepidoptera X. However, the principal parts of that philosophy remain intact and several more species would have to be discovered before we would abondon tha t stand. The new species is dearly distinct from all of the United States species heretofore named, a s shown by Busck's figures in Barmes Contributions, IVY p. 256, e t seq., 1920, with the possible exception of the species osseella Wlsm (Insect Life 2, p. 255, 1889). This is pre- cisely the one to be considered in this study. Unfortunately, osseella was unrepre- sented in North American collections in 1920. At the present time I know of no further published elucidation of the application of the name osseella. Eeference to Walsingham's description gives one the distinct impression tha t the foregoing coloration of osseella i s not the same a s manxamitae, although i t must be freely admtited that wing color may not be the most important factor in deciding the s ta tus of a species in the Stenomidae.

Of particular interest in this study are the larval and pupal structures a s compared to other Stenomids and other Micros. The similarity of this larva t o that of Xetiostoma i s a t once evident. Of note a r e the accessory setae in position VIIA49. This i s matched by species of the genus Eth.mia, and in both cases is l i k e i ~ cor- relaated wtih the peculiar seta development on each side of the genital opening of the pupa. I n Ethmia these setae a r e strong in the larva, and the pupa has a seti- ferous prolegs a t the comparable point. I n Antaeotricha manzanitas these setae are weak on the larva, often absent, and the pupa has no setiferous projections.

The four following species of Stenomidae have been found to have these larval characters in common: Head broad with frontal sutures confluent well before foramen apex ; mandibles gouge-shaped, the teeth usually reduced ; thoracic legs with equal scale-like setae behind the claw; part of dorsal thoracic tubercles large and flat ; inner lobes on contact surfaces of prdegs ; nine setae on anal prolegs.

Synopsis of larval differences Setiostoma fernaldella Riley: Head smooth; mandib,le with one or two separate

teeth ; hyi)ostomes not contiguous ; no ring tubercles on thoracic legs ; setae Ia-Ib on meso- and metathorax 011 l awe flate tubercles and a pair of cubercle- like sclerotinizations on dorsal rear lobe of metathorax; lobes on contact surfaces of prolegs breaking the central rings inwardly and the rear series centrally ; no accessory setae on VIIA9. (California)

Antaeotricha malzxanitae new species : Head rough reticulate ; mandiible with one inner tooth ; hypostomes not contiguous ; ring tubercles on prothosacic legs ; only setae Ia-Ib on mesothorax on large flat tubercle and no extra sclerotiniza- tions; lobes of prolegs not breaking crochet rings or series; usually minute accessorv setae on VIIA9. (California)

Antaeotricha -algidella Wllc.: very similar .to manxawitae but lacking pigmented tubercles behind thorax; no accessory setae on VIIA9. (Material meagre). ('Eastern States).

Alzadasmus sororia Zell. : Head roughly reticulate ; mandible with about six reduced teeth, the shape being roughly gouge-like; hypostomes broadly contiguous; no ring tubercles on prothoracic legs; lobes on contact surfaces of prolegs not breaking through crochets. (Central America).

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Plate I1 Choreutis n?ela?zif era

Fig. 1. Left side of adult head. Fig. 2. Male genitalia. Fig. 3. Female terminalia, left side to right. ~Fig. 4. Wings. Fig. 5. Anterior sternal plate. Fig. 6a. Pupa, sublateral and subdorsal views. Fig. 6b. ;Detail of punctures on dorsum of segment seven. Fig. 7a. Larval head, frontal view. Fig. 7b. Larval head, left side. Fig. 7c. Larval head, below. Fig. 7d. Larval mandible. Fig. 7e. Labrum Fig. 7f. Antenna. Fig. 8a. Larva, subdorsal view of thorax and first and second abdominals. Fig. 8b. Larva, sublateral view a s in 8a. Fig. 9a. Larva, sublateral view of last five abdominals. Fig. 9b. Larva, subdorsal view a s in 9a. Fig. 10. Larva, left side of last three abdominals. Fig. 11. Larva, rear view a s in 10. Fig. 12. Left metapod. Fig. 13. Left central proleg. Fig. 14 . Left anal proleg. Fig. 15. Skin spinules.

BULLETIN-DEPARTMENT O F AGRICULTURE

Glyphipterygidae Chol'eutis melanifera Keifer, new species

PLATE I1 Expanse 11-123 mm. Second joint of palpi white, a few indistinct dark dots

or bands on outer side and some black scales In brush; terminal joint with a dorso- rentrally projecting scale-pencil nearly a s long a s remainder of joint, the joint basally white but tips of both joint and pencil dark or mottled. Head dirty white, face centrally blackish ; antennae alternately white and black above. Thorax dirty white more or less blackened by heavy irroration centrally. Forewings with basal 2 dirty 'white, lightly but irregularly irrorated dark toward base especially on margins. An ochreous-fuscous-olivaceous band between 3 and almost 3 directly across wing, narrower on dorsum, with five associated shining leaden spots more or less black ringed: three moderate-sized spots in center of ban2 within costa, in center of wing near outer band margin, and just across fold on inner band margin respectively; two small bright leaden spots on outer margin of band within costa and on dorsum respectively. Outer half of wing basically white with black white-margined scales in a broad area along olivaceous band, along dorsal margin and well within apex; three shining black-rlnged leaden spots, a small one well within costa a t f$ and a large pair within tornus separated by a white line, the outer spot elongate trans- versely. A band of bright leaden scales within apex, followed by a n ochreous band extending from costal 4/5 to tornus, followed by an apical margin row of black white-rimmed scales, followed by narrowly white-tipped fuscous cilia. Hindwings dark fuscous, the cilia lined and tipped whitish. Wings somewhat irrorated white fuscous below. Abdomen with dark fuscous coloring above, the segments edged white posteriorly, the abdomen white below except for blackish terminal segment. Legs white irrorated and tipped black. Male genitalia with uncus and gnathos apparently represented by a pair of setiferous lobes, the tegumen little more than a r ing; harpes Broad, elongate, costa ending in a curved spine below which is a strong hair-tuft; vinculum a long triangular piece; aedoeagus moderately long, slender somewhat spined apically. Female ovipositor short, the apophyses short: the osium a t the apex of a triangular plate; ductus in part a sclerotinized tube; bursa scabinate.

Type, male, collected a s larva on Artemisia vulgaris i n the illissouri F l a t district, 3 miles west of Plaeerville on Webber Creek, May 17, 1936, by the writer, the adult appearing June 2, 1936. Allotype with the same data collected May 2, 1934, emerging May 16. Eighteen designated paratypes a r e from the same location and host, the larvae collected during May from 1934 to 1937, inclusive.

Larva 9-10 mm. long. Body cylindrical, tapering to both ends. Green. Tubercles moderate in size and somewhat conical. the dorsal tubercles, especially toward the front, fuscous a t the seta base. Setae moderately long. Central proleg crochets 15-16 in complete uniordinal circule; anal crochets 16-17 in unbroken uniordinal series. Larva longitudinally curling leaves and living within in a dense web of silk ; skeletonizing.

Larval structure: head small, the setae long and occupying space covering much of head; frons plus clypeus long and narrow, the frontal sutures almost reaching foramen ; setae F z opposite clypeus apex ; seta Oz well behind ocellus group ocellus VI weak; mandibles with eleven teeth ; spinerette long and slender; sub: mental setae rather close and moved posteriorly. Body skin set with moderately long spinules. Setae Ia , Ib, on meso- and metathorax closer than setae IIa, IIb. Thoracic legs slender, the tarsi spinuate. Prolegs rather long and slender with associated setae a t points of a triangle. Segment A9 with seta, I absent, setae I1 on compound dorsal tubercle, setae 111, IV, V, closely associated. Setae VII of abdomen: 2, 3, 3 ( 4 proleg segments), 2, 2, 1, 9 .

Pupa 6 mm. long, light brown, cylindrical, blunt on each end. Labial palpi, protrochanter and profemur visible. Antennae 3 length of wings, separated a t apex by maxillae that extend to wing apices. Wings, maxillae and hindlegs ending on or just over rear margin or fourth segment. Abdominal segments 4 to 8 inclusive movable; a transverse row of punctures across anterior dorsum of each segment from 2 to 8 inclusive, the puncture-rows edged anteriorly on segments 3 to 8 with a spine row. A pair of strong forward projecting setae on tubercles on venter of segments 6 and 7. No cremaster 'but a pair of hooked spines.

This moth was submitted last year to August Busck who has written that it i s similar to the eastern Tmcobnsis Fernald. The genitalia of the eastern and western forms a r e very similar, but the western type has a fuscous or blackish hindwing, while the eastern type has a reddish hindwing. W. Har ry Lange has reared melanifma from artichoke a t Half Moon Bay. There may be more than one annual brood.

The types and allotypes of the new species will be deposited in the California Academy of Sciences.