(excerpt)
Apache degeerii (Kirby) ranges from Maine south to Florida and west to Iowa and Texas; it has also been recorded from British Columbia and Washington (Metcalf 1945. Wilson and McPherson 1980). This derbid has been recorded from oak, beech, maple, and hickory (Swezey 19(4); otherwise no information on its biology is available

Wilson, Stephen W

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Stephen W Wilson

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 (Homoptera: Fulgoroidea: Derbidae)

Valparaiso University

The Great Lakes Entomologist Volume 15 Number 1 - Spring 1982 Number 1 - Spring 1982 Article 4 April 1982 Description of the Fifth Instar of Apache Degeerii (Homoptera: Fulgoroidea: Derbidae) Stephen W. Wilson California State University Follow this and additional works at: https://scholar.valpo.edu/tgle  Part of the Entomology Commons Recommended Citation Wilson, Stephen W. 1982. "Description of the Fifth Instar of Apache Degeerii (Homoptera: Fulgoroidea: Derbidae)," The Great Lakes Entomologist, vol 15 (1) Available at: https://scholar.valpo.edu/tgle/vol15/iss1/4 This Peer-Review Article is brought to you for free and open access by the Department of Biology at ValpoScholar. It has been accepted for inclusion in The Great Lakes Entomologist by an authorized administrator of ValpoScholar. For more information, please contact a ValpoScholar staff member at scholar@valpo.edu. 1982 THE GREAT LAKES ENTOMOLOGIST 35 DESCRIPTION OF THE FIFTH INSTAR OF APACHE DEGEERII (HOMOPTERA: FULGOROIDEA: DERBIDAE) Stephen W. Wilson l Apache degeerii (Kirby) ranges from Maine south to Florida and west to Iowa and Texas; it has also been recorded from British Columbia and Washington (Metcalf 1945. Wilson and McPherson 1980). This derbid has been recorded from oak, beech, maple, and hickory (Swezey 19(4); otherwise no information on its biology i available. The immatures of degeerii have never been described. In fact, to my knowledge, neither descriptions nor illustrations of immature Derbidae have been published. Derbid nymphs have been collected in rotting wood or under bark and are believed to feed on fungi (0'Brien, pers. comm.). Recently, two degeerii specimens were loaned to me for description and illustration. One specimen was an adult male that had almost entirely emerged from its attached nymphal skin; the other was a fifth instar nymph. The fifth instar was identical to the molted skin attached to the adult. The collecting data for both specimens are: Florida, Wakulla Co., 2 mi. north Panacea, 6 April 1973, C. W. and L. B. O'Brien collectors, under bark of Quercus. DESCRIPTION OF FIFTH INSTAR Measurements of the pinned nymph were made with an ocular micrometer. Body length was measured from the tip of the vertex to the tip of the abdomen, width was measured across the widest part of the body, thoracic length was measured along the midline from the anterior margin of the pronotum to the posterior margin f the metanotum. Fifth instar (Fig. I). Length 4.25 mm; thoracic length 1.50 mm; width 2.25 mm. Form elongate, slightly dorsoventrally flattened, widest across metathorax. Body yellow­ish brown to dark brown. Head dark brown. Vertex subpentagonal, narrowing apically, deeply concave medially, lateral margins strongly carinate. Frons ovoid, narrowing apically and basally, slightly wider than long, broadest just be eath eyes (which re not visible in frontal view), lateral margins strongly convex, each lateral margin carinate (outer carina) and paralleled by a second carina (inner carina) ca. Y.z~ the distance from midline to outer carina; inner carinae meeting apically; notched medially at frontoclypealjuncture; with two irregular rows of pits between inner and outer carinae. Clypeus yellowish, dark brown laterally and apically; narrowing distally, consisting of a subconical, basal postclypeus and an elongate subconical distal anteclypeus. Beak apparently three-segmented, yellowish-brown with darker apex; extending to 2nd abdominal stemite; segment I covered by anteclypeus, segments 2 and 3 subequal. Eyes dark reddish brown, somewhat reduced. Antennae encased in sockets, apparently reduced to knoblike protrusions. Thoracic nota dark brown with yellowish markings; divided by mid-dorsal line into three pairs of plates. Pronotum with anterior margin extending to level of posterior margin of eyes; each plate subrectangular, median and posterior areas highly elevated and bordered by strong carinae, median area subpentagonal and bearing a row of three pits. posterolateral area leaf-shaped and bearing a row of three pits; anterior margin broadly curved laterally, with a row f indistinct pits near margin; posterior margin highly sinuate. Mesonotum with median length ca. 1.5 times that of pronotum; each plate with a longitudinal oblique carina near midline. a longitudinal carina in median n, a longitudinal pustule-bearing partial carina extending onto wingpad ca. Y.z distan e from midline to lateral margin, and an oblique longitudinal pustUle-bearing carina extending almost to apex of wingpad in lateral Y4; wing­pad extending to tip of m sonotal wingpad and almost to posterior margin of fourth abdominal tergite; w h indistinct pits just lateral to carina in median n and bordering lateral IDepartment of Biological Sciences, California State University, Chico, CA 95929. 1Wilson: Description of the Fifth Instar of <i>Apache Degeerii</i> (HomoptPublished by ValpoScholar, 198236 THE GREAT LAKES ENTOMOLOGIST Vol. 15, No. I Fig. I. Fifth ins tar of A. degeerii. Vertical bar = 1.0 mm. margin of wingpad. Metanotum with median length ca. % that of mesonotum; each plate with a longitudinal carina near midline and a slightly concave longitudinal carina in median Y3. Pro-and mesocoxae elongate, posteromedially directed, procoxae somewhat dorso­ventrally flattened; metacoxae smaller, hidden behind enlarged cuplike trochanters;remain­ing segments of legs bearing short setae. Metatibiae lacking lateral and apical spines. Pro­and mesotarsi two-segmented, segment 1 wedge-shaped, segment 2 subconical and curved with a pair of slender brown claws and pale pulvillus apically. Metatarsi \three-segmented, seg­ments 1 and 2 subcylindrical and lacking spines, segment 3 similar to segment 2 of other legs. Abdomen nine-segmented, widest across segments 4 and 5, tergites brown, sternites yellowish. Tergites 1-7 each divided by a middorsal longitudinal membrane into right and left tergal plates; each side oftergal plates with the following features: tergites 1-7 each with a longitudinal carina near midline, tergites 2-3 each with one knoblike pit-bearing protru­sion, tergites 4-7 each with 3-4 knoblike pit-bearing protrusions (only three are prominent) and 2-3 additional pits near lateral margin. Segment 8 with tergite reduced, with a longi­tudinal median carina; segment 9 with tergite curving around lateral margins to ventral side, ventral surface with seven pits on each side; segment 9 surrounding a pair of ventral sclerotized paddle-like structures and a dorsal peg-like structure. Abdomen lacking enlargd wax glands. ACKNOWLEDGMENT I would like to thank Dr. L. B. O'Brien, Department of Entomology, Florida A & M University, Tallahassee, for the loan of specimens. LITERATURE CITED Metcalf, Z. P. 1945. General catalogue of the Hemiptera. Fasc. IV. Fulgoroidea, Parts 4. Derbidae, 5. Achilixiidae, 6. Meenoplidae, and 7. Kinnaridae, 256 p. Swezey, O. H. 1904. A preliminary catalogue of the described species of the family Fulgoridae of North America north of Mexico. Ohio Dept. Agric. Div. Nurs. Orch. Inspec., Bull. 3: 1-48. Wilson, S. W. and J. E. McPherson. 1980. The distribution of the Fulgoroidea of the eastern United States (Homoptera). Trans. lllinois Acad. Sci. 73(4):7-20. 2The Great Lakes Entomologist, Vol. 15, No. 1 [1982], Art. 4https://scholar.valpo.edu/tgle/vol15/iss1/4

Description of the Fifth Instar of \u3ci\u3eApache Degeerii\u3c/i\u3e (Homoptera: Fulgoroidea: Derbidae)

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Description of the Fifth Instar of \u3ci\u3eApache Degeerii\u3c/i\u3e (Homoptera: Fulgoroidea: Derbidae)

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