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Homoptera: Coccoidea: Asterolecaniidae) University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida October 1986 Allotype description of the male scale Sclerococcus chilensis (Homoptera: Coccoidea: Asterolecaniidae) P. L. Lambdin University of Tennessee, Knoxville, TN Follow this and additional works at: https://digitalcommons.unl.edu/insectamundi Part of the Entomology Commons Lambdin, P. L., "Allotype description of the male scale Sclerococcus chilensis (Homoptera: Coccoidea: Asterolecaniidae)" (1986). Insecta Mundi. 515. https://digitalcommons.unl.edu/insectamundi/515 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. 146 INSECTA MUNDI Vol. 1, no. 3, October 1986 Allotype description of the male scale Sclerococcus chilensis (Hamptera: Coccoidea: Asterolecaniidae) Descriptions of species in the genus Sclerosococ- cular setae (ios) anterior to ventral simple eyes cus are primarily based on the female morphology and associated with last midcranial seta forming a (McKenzie 1958, Lambdin 1980). The lack of descript- curved sutmedial raw; a pair of postoccipital setae ions for males is attributed to their brief seasonal on or near postoccipital ridge near bification, and appearances (lasting only a few hours) and their a pair of genal setae (gs) on each side near fold. small size that makes collection of adult specinws Antennae 10-segment: 1x30, 11x48, 111160, IV=57, difficult. As a result, adequate descriptions for V=64, VI46, VII=45-60, VIII=31, IX=36,51, X=45,51 only a few males of Asterolecaniidae are available long respectively. for ccmparisons. Of those species where mles are Thorax: Prothorax with reduced sclerotization; known, mtdescriptions are of the tests or general pronotal ridge (prnr) not discernible and pronotal morphological aspects (Russell, 1941). The most sclerites absent; pleural ridge (plrl) well deve- anprehensive descriptions for adult mles in the loped, articulates with coxa; prosternum (stnl) family were provided for Asterolecanium proteae represented by narrow median ridge bifid posteriorly. (Giliomee 1968) and for two species of Mesothorax most developed region of thorax; Grammmmw (Miller and LamMin 1978). represented dorsally by 3 major areas: (1) prescutum The genus Sclerosoaxlrus wntains 4 species (prsc) heavily sclerotized, rectangular, delimited knam £ran the Neotropical Region where they feed on posteriorly by prescutal suture that extends ante- branelid hosts. Until now, no reference was made as riolaterally into the the cshaped prescutal ridges to the existence of males of the species. My objec- and fuses anteriorly with mesoprephragma, 70 long, tive was to prwide a description of the adult mle 82 wide; (2) scutum (sct) represented by narrow mem- of this rare species to better define the tam. branous strip between prescutum and scutellum (scl) Measurements and illustration were mde by micro- that extends laterad of these structures into sub- scopic examination of the allotype male. Terminol- margin where anteriolateral area joins the prealare ogy used to describe the external morphology, with (pra); (3) scutellum (scl) rectangular, connects few exceptions, was adapted fran Theron (1958). All with postalare by oblique rodlike structures, tri- measurements are presented in micrawters. angular membranous area between scutellum and postnotun (pn2). Triangular plate not distinguish- Sclerosoclwrus chilensis LamWin able, postnatal apophyses (pna) well developed on Adult Male (Fig. 1) mesopostphragma. Setal arrangement on each side: a Typebcality. Chile. snall medial seta near margin on prescutal ridge; a TypeMaterial. Allotype adult mle on slide with lateral seta on anteriolateral margin of scutum near encircled Holotype adult fdedeposited in U.S. prealar (pra), a seta on anteriolateral margin near National Museum of Natural History, Washington, D.C. scutellum, a subnedial seta on scutellum, and a pair Slide with following data: Chile (coll. at San Fran- on tegular bulge ( teg ) . cisco, c., No. 154511, 5 Jul. 1938, R. D. Clemens Basisternum (st112) heavily sclerotized with furca coll. ( f ) . Mesopleural ridge (plr2) extends from coxa ob- General body appearance (Fig. 1.): Elongate, taper- liquely to base of wing process. Mesothoracic ing toward posterior end; slide mounted specimen spiracle (sp) on suhnargin, 30 long, 14 wide, atrial 1560u long, 320u wide at mesothorax. opening 7 in diameter; no pores associated with Head: Triangular, midcranial (mcr), postoccipital spiracles. ( por ) , and postccular ( pocr ) ridges well developed. Metathoracic sclerotization lacking except for the Midcranial ridge barlike, restricted to venter and much reduced pleural ridge (p11-3). Basisternal area without lateral arms, 65 long. Median crest wide. difficult to distinguish, represented by weakly Postoccipital ridge bifid laterally, 86 long. Gena sclerotized, transverse marginal ridge (mr3) that (g) represented by bulging membranous area of margin. fades out medially. Spiracles similar to those on Preocular ridge (procr) heavily sclerotized, mesothorax. A pair of minute setae in submedial c-shaped, positioned anteriolateral to dorsal simple area. eye and articulated with scape (scp). Postocular Wings and hamulohalterae absent. Legs similar in ridge (pocr) originates behind dorsal simple eye shape, 5-segmented; legs increase in size anteriorly (dse) and extends ventrad to posterior region late- to posteriorly as foll&: prothoracic 511, mesotho-- rad of cranial apphysis (ca). Dorsal simple eyes racic 590, and metathoracic 723 lona resoectivelv. (dse) 30 in diameter and 68 apart. Ventral simple Tarsi apparently 2-segwnted. claw wellfdevelo&, eyes (vse) 28 in diameter and 16 apart; tubercular 18-21 long, without denticle. Legs with numberous ocelli (0) present. All setae on head row of 4 setae; 2 types present, hairlike predominant. ventral (mcr) and 4 dorsal (dhs) pairs of setae Tarsal and claw digitules (dgt) present, ca. 25 associated with midcranial ridge; 2 pairs of intero- long. Abdomen membranous, tapering posteriorly, with Department of rnt-l~gy and plant Pathology long sclerotized aedeagus tad). segmentation dis- ' tinct. Dorsally, segment I with a pair of sub- University of Tennessee, Knoxville, TN 37901 marginal and sulmedial setae, but s-t I1 through Vol. 1, no. 3, October 1986 INSECTA MUNDI 147 VII with 2 pairs in each area; segments V and VI with a marginal seta on each side, setae needlelike, 8 ( 5-12 long. Ventrally, fused segments 1-11 with a submedial seta, segments 111-VI with a pair of tacklike setae, 3 (3-5) long. Segment VII with ca. 12 pores (np)on submargin: 1 trilocular, 8 quadra- locular , and 3 quinquelocular . Pregenital segment VIII without setae. Anal orifice (an) on dorsum of IX segment, 18 in diameter. A pair of setae (gts) on venter ca. 23 long, and on dorsum 40 long. Ae- deagus (ad) 576 long, consists of penial sheath (ps) and style (st), latter 486 long; no setae or sensilla on the penial sheath. Discussion The general mrphology of the male is consistent with that for species of the lecanoid group. Although this ooccid has smprimitive traits (eg. the retention of ntultilocular pores in clusters on the 7th abdaninal segment), it is distinguished by many specialized features, notably the elongated aedeagus, lack of wings and hamuhalters, and well- developed thoracic region. The aedeagus of S. chilensis is longer and mre narrw (length/width ratio 6.4) than those recorded for species of Grammmmm (0.8-1.0). The head differs by having a distinct postoccipital ridge as opposed to dorsal sclerites and by having lateral ocelli. Setae are present on the thoracic segments of S. chilensis but absent on A. proteae, G. adetocoqrhs, and G. corymbus. In addition, S. chilensis is distinguished by segnmmtal setae on abdanen in eight longitudinal rows on dorsum and four longit~di~lraws on venter. REFHZENCES CITED Gilianee, J. H. 1968. Brphology and relationship of the male of an ~sterolecaniumspecies (Hanoptera: Coccoidea). J. Entaml. Soc. S. Mr. 31:297-308. Min,P. L. 1980. TWo new species of pit scales on braneliads fran South America (Hanoptera: Coccoidsa: Asterolecaniidae). Ann. Entamol. Scc. Amer. 73:468-471. McKenzie, H. L. 1958. A new asterolecaniid scale on succulents fran Mexico. Pan Pac. Entanol. 34:169-172. Miller, D. R. and P. L. Iambdin. 1978. A new genus Sclerocorrus chilensis: Dorsoventral view of the and two new species of asterolecaniid scale adult male. insects on palm £ran Colanbia and Trinidad (Hamptera: Coccoidea: Asterolecaniidae). Entamol. Scc. Wash. Proc. 80:240-263. Munting, J. and J. H. Giliaree. 1967. A new species of Lecaniodiaspis Targ. (Hcrraptera: Asterolecaniidae) £ran South Africa. J. html. Soc. S. Mr. 29:102-108. Russell, L. M. 1941. A classification of the scale insect genus Asterolecanium. Misc. Publs. U.S. Dept. Agric. 424:l-132. Theron, J. G. 1958. Canparative studies on the morphology of male scale insects (Hemiptera: Coccoidea) . Ann. Univ. Stellenbosch. 24: 106. .
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