Limonia (Dicranomyia) guamicola Alexander, 1942, new species
Creators: name: Alexander, C. P.
Publisher: name: Zenodo
Year: 1942
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Limoniidae
Limonia
Limonia guamicola

description: 5. Limonia (Dicranomyia) guamicola, new species (fig. 1, <i>a, b).</i> Belongs to the <i>punctulata</i> group; size large; general coloration of thorax reddi5h brown, variegated with darker, including a narrow brownish black pleural stripe; male hypopygium with a single rostral spine that is placed far out at tip of prolongation; mesalapical lobe of gonapophysis slender, nearly straight, blackened. Male, length about 8 mm., wing, 9 mm. Rostrum and palpi black. Antennae black throughout; flagellar segments oval to longoval; terminal segment about one-fourth longer than the penultimate. Head blackish gray; anterior vertex reduced to a linear strip that is about as wide as a single ommatidium. Pronotum brown. Mesonotum reddish brown to huffy, with poorly differentiated, pale brown stripes, the intermediate pair darker and more conspicuous near the suture; scutal lobes more darkened; mecliotergite darkened on cephalic portion; pleurotergite dark brown, more or less pruinose. Pleura buffy, with a narrow brownish black longitudinal stripe from the cervical sclerites across the propleura, ventral anepisternum and ventral pteropleurite to the base of abdomen. Halteres yellow, the small knobs very weakly darkened. Legs with the coxae yellow, the fore and middle pairs narrowly infuscated at base; trochanters yellow; femora pale brown, the bases brightened, the tips vaguely darkened; tibiae and tarsi pale brown, the outer segments darker; claws elongate, simple. Wings (fig. 1, <i>a)</i> brownish yellow, sparsely patterned with brown as in the <i>punctulata</i> group, including the usual two spots along vein 2d <i>A;</i> cells <i>C</i> and <i>Sc</i> unpatternecl or the former with two or three pale brown clouds near outer encl; veins yellow, darker in the clouded portions. Venation Sc1 ending a short distance beyond origin of <i>Rs, Sc2</i> at its tip; <i>m-rn</i> shortly be~nd fork of <i>lvl.</i> Abdomen reddish brown, the basal segments somewhat darker; hypopygium obscure yellow. Male hypopygium (fig. 1, <i>b)</i> with the tergite extensive, the caudal margin gently emarginate, lateral lobes rounded. Dorsal clististyle, <i>dd,</i> a slender curved rod, the tip acute and very gently upcurved. Ventral clististyle, <i>vd,</i> large, more extensive than the basistyle; rostral prolongation conspicuous; a single powerful spine placed far out on the prolongation, without a basal tubercle. Gonapophyses, <i>g,</i> with mesal-apical lobe slender, nearly straight, blackened. Aecleagus, <i>a,</i> terminating in a simple narrow point. Piti, at light, June 12, Swezey, holotype male. In its large size and in the structure of the male hypopygium, the present fly is quite distinct from all species of the group so far made known. In the structure of the male hypopygium, it is closest to <i>L1'1nonia</i> <i>(Dicranoniyia) neopunctulata</i> Alexander, of the southern Philippine Islands and Borneo, differing especially in the structure of the dististyles and gonapophyses. The species belonging to the <i>punctulata</i> group are as follows: <i>L. (D.) fijiana</i> Alexander. Fiji. <i>L. (D.) fullawayi</i> Alexander. Laclrones, Carolines. <i>L. (D.) lwlin</i> Alexander. Southeastern Australia. <i>L. (D.))</i> <i>magnistyla</i> Alexander. New Britain. <i>L. (D.) 11-eopwictulata</i> Alexander. Mindanao, Borneo. <i>L. (D.))</i> <i>poli</i> Alexander. China, Japan. <i>L. (D.) punctipemzis</i> Skuse. Eastern Australia. <i>L. (D.) p. maoriensis</i> Alexander. New Zealand. <i>L. (D.)) p. occidentalis</i> Alexander. Western Australia. <i>L. (D.) pzmctulata</i> de Meijere. East Indies. <i>L. (D.) pzmctulatella</i>.Alexander. Northeastern Australia. <i>L. (D.) punctulatoides</i> Alexander. Mindanao. <i>L. (D.) rectide11</i> sAlexander. China. <i>L. (D.) subpwzctulata</i> Alexander. Formosa.
description: Published as part of <i>Alexander, C. P., 1942, Diptera, Tipulidae of Guam, pp. 195-198 in Insects of Guam I, Honolulu. Hawaii :Bernice P. Bishop Museum, Bulletin, 172</i> on pages 196-197, DOI: 10.5281/zenodo.5174000