Title: Bulletin
Identifier: bulletin7073sout (find matches)
Year: 1971- (1970s)
Authors: Southern California Academy of Sciences
Subjects: Science; Natural history; Natural history
Publisher: Los Angeles, Calif. : The Academy
Contributing Library: New York Botanical Garden, LuEsther T. Mertz Library
Digitizing Sponsor: The LuEsther T Mertz Library, the New York Botanical Garden

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Ill III. 11\ SOI' I ///â ."« .V CM NORMA ACADEMY OF SCIENCES VOLUME 73
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Figure 1. Euschoengastia hardyorum, new species: A, scutum; B, ventral aspect of gnathosoma; C, ventral aspect of palpal tibia and tarsus; D, posterodorsal body seta; E, leg setae, typical of distal segments; F. distal segments of leg I with bases of branched and specialized setae (measurements in microns); G, leg II, as above; H, leg III, as above. theses): Body, engorged, length 416, width 285, color in life white. Eyes 2/2, without ocular plate. Dorsal setae 2-10-10-2-8-6-2, total 40; measurements of humeral seta 39 (40.7, 38-43); anterodorsal 36; posterodorsal 30; shafts of setae in last three rows slightly flattened and expanded; all dorsal setae with large conspicuous ventrolateral setules and smaller dorsal setules. Ventral setae 2-2+34, total 38; mea- surements of first sternal seta 36; preanal 23; postero- ventral 29. Scutum.âWith flared anterolateral and postero- lateral margins, SBs posterior to PLs, prominent ridges anterior to SBs, few scattered inconspicuous puncta; sensilla clavate, anterior surface with long, slender setules becoming sparser distally, posterior aspect with short, blunt setules and a bare median strip becoming wider distally, pedicel with barbs on distal third. Scutal measurements of holotype: AW, 52 (50.8, 48-58); PW, 70 (71.9. 66-81); SB, 26 (26.3, 24-31): ASB, 20 (19.9, 19-21); PSB, 12 (16.6, 9-13): AP, 16 (14.1, 12-16); AM, 27 (25.6, 24-27, eight paratypes); AL. 28 (29.1. 27-32): PL, 37 (42.4, 41-45); SL. 36 (34. 32-36, eight paratypes); SW, 14 (14.6, 13-16. nine paratypes). Gnathosoma.âGaleala with four branches (3 to 4-branched). Palpal formula B B BBB; palpotibial claw pentafurcate; lateral palpotibial seta with three branches (2 to 3-branched). Cheliceral bases without puncta. Legs.âSubterminala I, parasubterminala I, genuala III and tibiala III absent; tarsi of legs I, II, and III with 23, 16, and 15 setae, respectively. Leg index of holotype: I. 244: II. 206; III, 241; total, 691. Mean and range of selected nude setae of 11 paratypes: tarsala I, 12.9, 12-14; tarsala II, 19.9, 19-21; proximal tibiala I, 7, 6-9; distal tibiala I, 7, 6-9; proximal tibiala II, 4.5, 4-5; distal tibiala II, 4.8, 4-6; dorsal genuala I. 6.3, 5-9; posteroventral genuala I, 6.4, 6-9; genuala III, 4.6, 4-6. Coxae and other leg segments not punctate. Specimens examined (74 larvae): CALIFORNIA. Inyo Co: Death Valley National Monument, 4 mi E Wildrose Ranger Station (5710 ft), 2 November 1962, 10 Dipodomys microps (41), two Perognathus formosus (8); 5 mi E Wildrose Ranger Station, 8 September 1962, P. formosus (3); Argus Mts., Home- wood Canyon, Ruth Mine (3860 ft), 8 November 1964, Thomomys umbrinus (1), Dipodomys merriami (3), three P. formosus (18). Taxonomic remarks: Euschoengastia hardyorum is similar to E. romola Brennan and Jones in lack- ing subterminala I, genuala III and tibiala III, and in overall size. It differs from E. romola in having a pentafurcate palpotibial claw, the posterior two or three rows of dorsal body setae are slightly expanded, and all dorsal body setae have large conspicuous ventrolateral setules (E. romola has a trifurcate palpotibial claw, all dorsal body setae, except the medial-most of the first posthumeral row, are flattened and appear leaf-like, with small ventrolateral setules similar to the dorsal setules). Euschoengastia hardyorum is named for Ross Hardy and his son, Alan Hardy, formerly of California State University, Long Beach, in recognition for their many contributions of mam- mals which were examined for ectoparasites. Ecological notes: The type locality in Wildrose Valley was on an alluvial fan which extended from the mouth of Upper Wildrose Canyon. The area was covered by a desert pavement of coarse gravel between larger rocks. The most common plant was blackbrush, Coleogyne ramosissima Torrey. The whitish-colored larvae were in pits on the venter (belly, legs, and genital area) of heteromyid

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