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Maize (Zea mays L.), which is considered an important cereal everywhere, is widely cultivated in different agroecological conditions. Throughout their phenological stages, maize crops are attacked by pests and diseases, and in Ecuador these phytosanitary problems are usually counteracted with applications of pesticides. However, knowledge of beneficial entomofauna is fundamental to guide pest management programs. As part of this objective, the Coccinellidae species present in maize fields in localities (Santa Ana, Colon, and Danzarin) in Manabí province were identified. In each zone, maize plants were sampled from 2018–2019. A total of 2,654 specimens belonging to 14 taxa were collected in this study, of which Cheilomenes sexmaculata, Cycloneda sanguinea, Hippodamia convergens, Hyperaspis arida, and Psyllobora confluens were found in all the studied areas. Hyperaspis arida and Diomus apollonia are reported for the first time in Ecuador.

A morphology-based illustrated taxonomic key is presented for the identification of the adult females of 59 scale insects that have been recorded associated with coffee roots in Colombia. Previously published doubtful records of species of Diaspididae, Pseudococcidae, and Rhizoecidae were reevaluated and a revised list of scale insects that can be found on coffee roots is presented. A discussion of the morphological variation of Dysmicoccus neobrevipes Beardsley, 1959, Dysmicoccus texensis (Tinsley, 1900) and Dysmicoccus joannesiae (Costa Lima, 1939) is included. The species Distichlicoccus takumasae is emended to Distichlicoccus takumasai. [ABSTRACT FROM AUTHOR]

Meloetyphlus Waterhouse is a monotypic genus of Meloidae ascribed to the tribe Tetraonycini, subfamily Meloinae. As for most blister beetles, its first-instar larvae (or triungulins) are parasites of bees, but M. fuscatus Waterhouse is the only species known to parasitize members of the tribe Euglossini (Hymenoptera: Apidae: Apinae). Despite being widely distributed in Central and South America, its presence in Colombia has never been confirmed. In this article, we document the occurrence of this genus in Colombia providing the first certain record for this country. In addition, some aspects of its parasitization of Eulaema nigrita Lepeletier are reported and illustrated with macrophotographs and a video. By the means of drawings and SEM micrographs, we provide the most detailed description of the first-instar larva of M. fuscatus to date and a comparison with the triungulin of the closely related Tetraonyx fulvus (LeConte). Finally, we investigated the phylogenetic position of Meloetyphlus using molecular data, to support its attribution to the tribe Tetraonycini. [ABSTRACT FROM AUTHOR]

The obscure mealybug Pseudococcus viburni (Signoret) (Hemiptera: Pseudococcidae) is recorded for the first time from Colombia based on specimens collected on Opuntia cylindrica (Lam.) DC., Mammillaria sp. (Cactaceae), Escallonia paniculata (Ruiz & Pav.), Roem. & Schult. (Escalloniaceae), Ficus carica L. (Moraceae), Coffea arabica L. (Rubiaceae), Citrus sp. (Rutaceae), Cestrum nocturnum L. and Solanum betaceum Cavanilles (Solanaceae). Multiple methods were used to identify P. viburni because it belongs to the "Pseudococcus maritimus" complex, a group composed of more than 60 species with high variation in morphological characteristics. The specimens were identified based on the morphology and morphometric analysis of third‐instar nymphs and adult females. This morphological identification was corroborated by data on geographical distribution, plant hosts and a molecular identification using two different loci, CO1 (mtDNA) and the 28S ribosomal gene (nuclear genome). An updated list of species of Pseudococcus Westwood recorded from Colombia and information on morphological variation found in the studied specimens from Brazil and Colombia are provided. [ABSTRACT FROM AUTHOR]

The corn leaf aphid is considered an important pest associated with maize. This study aimed to discover the trophic associations around Rhopalosiphum maidis in Manabí, Ecuador. Maize leaves were sampled to determine the numbers of parasitized aphids, and the identities of predators and parasitoids. Nine taxa of natural enemies were detected: the primary parasitoid was Lysiphlebus testaceipes Cresson, 1880 (Hymenoptera: Braconidae); the hyperparasitoid Syrphophagus aphidivorus (Mayr, 1876) (Hymenoptera: Encyrtidae); the predatory hoverfly Ocyptamus dimidiatus (Fabricius, 1781) (Diptera: Syrphidae), four species of coccinellids, Cheilomenes sexmaculata (Fabricius, 1781), Cycloneda sanguinea (Linnaeus, 1763), Hippodamia convergens Guerin-Meneville, 1842 and Paraneda pallidula guticollis (Coleoptera: Coccinellidae) and an assassin bug, Zelus sp. (Hemiptera: Reduviidae). A parasitoid, Pachyneuron formosum Walker, 1833 (Hymenoptera: Pteromalidae) emerged from hoverfly pupae. This study reports the presence of the parasitoids S. aphidivorus and P. formosum in Ecuador for the first time. These results increase the knowledge of a four-trophic level relationship (host plant – pest – parasitoids, predators – hyperparasitoids) in a maize agroecosystem as a fundamental basis for biological control programs. [ABSTRACT FROM AUTHOR]

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Asexual lineages provide a challenge to species delimitation because species concepts either have little biological meaning for them or are arbitrary, since every individual is monophyletic and reproductively isolated from all other individuals. However, recognition and naming of asexual species is important to conservation and economic applications. Some scale insects are widespread and polyphagous pests of plants, and several species have been found to comprise cryptic species complexes. Parasaissetia nigra (Nietner, 1861) (Hemiptera: Coccidae) is a parthenogenetic, cosmopolitan and polyphagous pest that feeds on plant species from more than 80 families. Here, we implement multiple approaches to assess the species status of P. nigra, including coalescence-based analyses of mitochondrial and nuclear genes, and ecological niche modelling. Our results indicate that the sampled specimens of P. nigra should be considered to comprise at least two ecotypes (or "species") that are ecologically differentiated, particularly in relation to temperature and moisture. The presence of more than one ecotype under the current concept of P. nigra has implications for biosecurity because the geographic extent of each type is not fully known: some countries may currently have only one of the biotypes. Introduction of additional lineages could expand the geographic extent of damage by the pest in some countries. [ABSTRACT FROM AUTHOR]

We present an updated list of 532 vascular plant species distributed in 375 genera and 110 families on the islands of San Andres and Old Providence, Colombia, based on a compilation of published literature and some additional observations. The following nine plant species are new plant records for the islands: Cycas circinalis L. (Cycadaceae), Clerodendrum trichotonum Wall., Mentha viridis (L.) L., Ocimum americanum L. var. americanum, O. basilicum var. purpurascens Benth., O. campechianum Mill. (Lamiaceae), Pandanus sp. (Pandanaceae), Duranta repens L. and Lantana involucrata L. (Verbenaceae). [ABSTRACT FROM AUTHOR]

We provide objective criteria for assessing the taxonomic status of genera, especially those that are monotypic, using the coccid genus Taiwansaissetia Tao, Wong & Chang. This genus contains only the type species, Lecanium formicarii Green [currently Taiwansaissetia formicarii (Green)], known from the Afrotropical and Oriental regions. Here, Taiwansaissetia is synonymised ( syn.nov.) with Coccus Linnaeus (Hemiptera: Coccidae) on the basis of phylogenetic analyses of DNA sequence data and morphological examination. All analyses (maximum parsimony, neighbour-joining and Bayesian inference) of four gene regions ( 18S, 28S, COI and EF-1α), and a concatenation of these regions, placed the clade including T. formicarii and three unidentified Coccus specimens as sister to the type species of Coccus, C. hesperidum Linnaeus, with high support. Taiwansaissetia formicarii is more closely related to C. hesperidum than C. hesperidum is to C. viridis (Green), which is considered to be a 'typical' species of Coccus, and several other current members of Coccus [ C. longulus (Douglas), C. penangensis Morrison and C. pseudomagnoliarum (Kuwana)]. Explicit criteria, including monophyly, diagnosability, sister taxa being of equal rank, and the level of genetic divergence between T. formicarii and C. hesperidum relative to within-genus divergence of other scale insects, were used to assess the taxonomic status of Taiwansaissetia. The autapomorphic features of Taiwansaissetia that differentiate it from typical species of Coccus might be due to its myrmecophilous habit and adaptation to living inside ant nests - most other species of Coccus live externally on their host plants. Since its description in 1896, T. formicarii has been placed in four different genera: here we transfer it back to Coccus as C. formicarii (Green) stat.rev. We rediagnose the genus Coccus to accommodate the features of C. formicarii. This study also found that Coccus might not be monophyletic, warranting further study of the group. [ABSTRACT FROM AUTHOR]

Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae), one of the most serious pests of cassava worldwide, has recently reached Asia, raising significant concern over its potential spread throughout the region. To support management decisions, this article reports recent distribution records, and estimates the climatic suitability for its regional spread using a CLIMEX distribution model. The article also presents a taxonomic key that separates P. manihoti from all other mealybug species associated with the genus Manihot. Model predictions suggest P. manihoti imposes an important, yet differential, threat to cassava production in Asia. Predicted risk is most acute in the southern end of Karnataka in India, the eastern end of the Ninh Thuan province in Vietnam, and in most of West Timor in Indonesia. The model also suggests P. manihoti is likely to be limited by cold stress across Vietnam's northern regions and in the entire Guangxi province in China, and by high rainfall across the wet tropics in Indonesia and the Philippines. Predictions should be particularly important to guide management decisions for high risk areas where P. manihoti is absent (e.g., India), or where it has established but populations remain small and localized (e.g., South Vietnam). Results from this article should help decision-makers assess site-specific risk of invasion, and develop proportional prevention and surveillance programs for early detection and rapid response. [ABSTRACT FROM AUTHOR]

Abstract: A new species of lac insect, Paratachardina javanensis Kondo and Gullan, sp. nov. (Hemiptera: Coccoidea: Kerriidae), is described and illustrated from a collection on Myrica rubra Siebold and Zucc. (also called Morella rubra Lour., Myricaceae) in West Java, Indonesia. This lac insect species is most similar morphologically to the pestiferous lobate lac scale, Paratachardina pseudolobata Kondo and Gullan. A comparison of the two species and an updated taxonomic key to all named Paratachardina species are provided. [Copyright &y& Elsevier]

The monophlebid scale insect Icerya aegyptiaca is reported for the first time in the Ryukyu Islands of Japan, where it was found in four islands: Kurima Island, Kuro Island, Miyako Island and Yonaguni Island. Icerya aegyptiaca was collected from 36 plant species belonging to 23 families. Information on the distribution and natural enemies of I. aegyptiaca and a key to separate known species of Icerya occurring in Japan are provided. [ABSTRACT FROM AUTHOR]

A new soft scale insect, Bombacoccus aguacatae Kondo, gen. n. and sp. n. (Hemiptera: Coccidae) collected on the branches and twigs of avocado, Persea americana Mill. (Lauraceae) in Colombia, is described and illustrated based on the adult female. An updated taxonomic key to closely related genera of the Toumeyella-group is provided. [ABSTRACT FROM AUTHOR]

The genus Etiennea Matile-Ferrero is synonymized with Hemilecanium Newstead (Hemiptera: Coccidae). We base this decision on a morphological comparative study of adult females, adult males and first-instar nymphs (crawlers), including a phylogenetic analysis. We recovered a sister group relationship between the type species of the two genera, Etiennea villiersi Matile-Ferrero and Hemilecanium theobromae Newstead; that is, each was more closely related to the other than either was to other species in their respective genera. All species hitherto included in Etiennea are transferred to Hemilecanium: H. bursera (Hodgson & Kondo) comb. nov., H. cacao (Hodgson) comb. nov., H. candelabra (Hodgson) comb. nov., H. capensis (Hodgson) comb. nov., H. carpenteri (Newstead) comb. nov., H. cephalomeatus (Hodgson) comb. nov., H. combreti (Hodgson) comb. nov., H. ferina (De Lotto) comb. nov., H. ferox (Newstead) comb. nov., H. gouligouli (Hodgson) comb. nov., H. halli (Hodgson) comb. nov., H. kellyi (Brain) comb. nov., H. madagascariensis (Hodgson) comb. nov., H. montrichardiae (Newstead) comb. nov., H. multituberculum (Hodgson) comb. nov., H. petasus (Hodgson) comb. nov., H. sinetuberculum (Hodgson) comb. nov., H. tafoensis (Hodgson) comb. nov., H. ulcusculum (Hodgson) comb. nov., and H. villiersi (Matile-Ferrero) comb. nov. Keys to the adult females of all 26 species and known adult males and first-instar nymphs are provided. The adult males and first-instar nymphs of H. theobromae Newstead and E. villiersi Matile-Ferrero are for the first time fully described and illustrated. One new potential pest species of Hemilecanium, H. uesatoi Kondo & Hardy sp. nov., which was collected on three islands of the Ryukyu Archipelago, Japan, is described and illustrated based on the adult female, adult male and first-instar nymph. We discuss evidence that H. uesatoi is a new introduction to the Ryukyu Archipelago. The first-instar nymphs of Hemilecanium can be divided into two distinct morphological groups, the petasus group and the theobromae group. [ABSTRACT FROM AUTHOR]

Abstract Two new species of Brazilian mealybugs, Plotococcus capixaba Kondo sp. n. and Plotococcus hambletoni Kondo sp. n. (Pseudococcidae), are described and illustrated. Plotococcus capixaba is a newly recognized pest from the leaves of the jaboticaba tree, Myrciaria jaboticaba (Vell.) O. Berg (Myrtaceae), from Espírito Santo and from Leandra erinacea Cogn. (Melastomataceae) from São Paulo. Plotococcus hambletoni was collected in São Paulo on a myrtaceous plant. A revised key to the species of Plotococcus Miller & Denno, and a key to the different growth stages of P. capixaba are provided. All female instars are described for P. capixaba , but only the adult female is known for P. hambletoni . The biology of Plotococcus is discussed, with emphasis on P. capixaba . [ABSTRACT FROM AUTHOR]

The genusXenolecaniumTakahashi is reviewed and transferred from the subfamily Myzolecaniinae to the Coccinae (tribe Paralecaniini). The type speciesXenolecanium mangiferaeTakahashi is redescribed, andXenolecanium takahashiiKondo sp. nov. from Indonesia is described based on the adult female and first instar nymph. A taxonomic key is provided to separate adult females of the two species ofXenolecanium.Xenolecanium rotundumTakahashi is transferred to become the type species of a new monotypic genus,TakahashilecaniumKondo, which is also placed in the Paralecaniini. The morphological justification for placingXenolecaniumandTakahashilecaniumin the Paralecaniini is discussed, and we provide a taxonomic key for separating both genera from all other members of the Paralecaniini. [ABSTRACT FROM AUTHOR]

The guava cottony scale, Capulinia linarosae Kondo & Gullan (Hemiptera: Eriococcidae), is an important pest of guava, Psidium guajava L. (Myrtaceae) in northern Colombia and Venezuela. A species of Metaphycus (Hymenoptera: Encyrtidae) is the only known primary parasitoid associated with this insect pest. The parasitoid is herein described as M. marensis Chirinos & Kondo, sp. nov., based on morphological characteristics of the adult female and male. Biological studies on adult longevity, fecundity, host preference, and sex ratio were conducted. The maximum longevity of the female and the male were 8.0 and 6.5 days, respectively, when fed with diluted honey. On average, a fed mated female laid approximately 40 eggs. Adult females of M. marensis were shown to prefer to parasitize 11- to 15-day-old adult females of C. linarosae and do not parasitize first-instar nymphs of the host eriococcid. The female-to-male sex ratio of the parasitoid was 2.24: 1. When ovipositing females of M. marensis were given only small-sized individuals (second-instar nymphs) of C. linarosae, generally the resulting progeny was a single male wasp. This parasitoid species has arrhenotokous reproduction and is a facultative gregarious parasitoid. These results show a short adult longevity, as well as a relatively low fecundity of the female compared with studies conducted on other Metaphycus species. This study provides essential baseline information for future biological control programmes for C. linarosae. [ABSTRACT FROM AUTHOR]

A new neotropical genus and species of soft scale insect from Cuba, Hamonicoccus Mestre and Kondo gen. nov. is described and Hamonicoccus alayoi Mestre and Kondo sp. nov. (Hemiptera: Coccomorpha: Coccidae) is described and illustrated based on the adult female. The species was collected in Cayos de las Cinco Leguas, Matanzas Province, on Capparis cynophallophora (Capparaceae), and in Surgidero de Batabanó, Mayabeque Province, on Rhizophora mangle (Rhizophoraceae). The affinities of H alayoi sp. nov. with closely related species is discussed based on published literature. An updated list of soft scale insects (Hemiptera: Coccidae) known from Cuba is provided. [ABSTRACT FROM AUTHOR]

A new soft scale species, Cryptostigma cecropiaphilum Kondo & Roubik, sp. nov. (Hemiptera: Coccomorpha: Coccidae), is described from specimens collected from inside hollow branches (internodes) of Cecropia ficifolia Warb. ex Snethl and Cecropia sciadophylla Mart. (Urticaceae), in Orellana province, Ecuador. The new species was found in association with three mutualistic hymenopterans: two species of Plebeia Schwarz, subgenus Nanoplebeia Engel (Hymenoptera: Apidae: Meliponini), and Azteca sp. (Hymenoptera: Formicidae: Dolichoderinae). The new species of coccid is described based on the morphology of the adult female and first-instar nymph. Keys to the known adult females and first-instar nymphs of Cryptostigma Ferris are provided.

' Candidatus Liberibacter asiaticus' ( C Las) is an unculturable phloem-restricted α-proteobacterium associated with huanglongbing (HLB). Here, we provide the genome sequence of C Las strain CoFLP1 from its insect vector Diaphorina citri (Hemiptera: Liviidae) collected in the department of La Guajira, Colombia. The CoFLP1 strain is composed of 1,231,639 bp with G+C 36.5% content. This study reports the first C Las genome sequence from Colombia, which will add to C Las genome resources and help to elucidate our understanding of the introduction pathway of HLB in South America.

The Neotropical scale insect genus Ripersiella Tinsley (Hemiptera: Coccomorpha: Rhizoecidae) was investigated, based on soil samples deposited at the Hungarian Natural History Museum. Description and illustration of a new species, Ripersiella incarum Kaydan Szita sp. n., and an identification key and new additional locality records for the currently known Ripersiella species in the Neotropical region, are provided and discussed.

Insects are indispensable actors within global agri-food systems and ensure the delivery of myriad ecosystem services. A progressive decline in insect numbers - as inflicted by habitat loss, pollution or intensive agriculture - can jeopardize a sustained provisioning of those services. Though we routinely disregard how insects help meet multiple sustainable development challenges, a gradual insect decline can have grave, long-lasting consequences. Here, we describe how insect-mediated biological control not only defuses invasive pests and can reconstitute crop productivity, but equally delivers other positive social-ecological outcomes. Drawing upon the pan-tropical invasion of the cassava mealybug and its ensuing suppression by the monophagous parasitoid Anagyrus lopezi, we illuminate how biological control contributes to food security, poverty alleviation, human wellbeing and environmental preservation. Trans-disciplinary research and 'systems thinking' are needed to maximize the potential of these biodiversity-driven interventions, and thus reap the net positive spin-offs insects provide for farmers, the environment and human society., (Copyright © 2020 Elsevier Inc. All rights reserved.)

The Southeast Asian soft scale insects (Hemiptera: Coccomorpha: Coccidae) associated with ants of the Crematogaster borneensis-group (Hymenoptera: Formicidae) and living in the hollow stems of Macaranga plants (Euphorbiaceae) are revised taxonomically. Ten species of the genus Coccus L. are recognised: seven were described previously and three new species are described herein. The species are: Coccus caviramicolus Morrison, C. circularis Morrison, C. heckrothi Gullan Kondo sp. n., C. lambirensis Gullan Kondo sp. n., C. macarangicolus Takahashi, C. macarangae Morrison, C. penangensis Morrison, C. pseudotumuliferus Gullan Kondo sp. n., C. secretus Morrison and C. tumuliferus Morrison. All of these species are described or redescribed and newly illustrated based on the adult females, and a key to distinguish the species is provided. We designate a lectotype for C. macarangicolus. The first-instar nymphs of all species are morphologically extremely similar and therefore only the first-instar nymph of C. macarangae is described and illustrated. Seven of these species currently are known only from Macaranga, but C. macarangae, C. secretus and perhaps C. pseudotumuliferus have been recorded from the hollow stems of several other ant-plants and a few non-myrmecophytes. The Coccus species from Macaranga are closely related to C. hesperidum L., the type species of the genus, and therefore are retained in the genus Coccus even though the adult females exhibit a few morphological differences from C. hesperidum. The species of Coccus from Macaranga appear to be parthenogenetic because no male nymphs or adults have been found, despite extensive collecting.

Cryptes utzoni Lin, Kondo Cook sp. n. (Hemiptera: Coccidae) is described based on adult female morphology and DNA sequences from mitochondrial and nuclear loci. This Australian endemic species was found on the stem of Acacia aneura (Fabaceae) in Western Australia. All phylogenetic analyses of three independent DNA loci show that C. utzoni is closely related to C. baccatus (Maskell), the type and only species of Cryptes Maskell, 1892. The adult female of C. utzoni is described and illustrated and a table is provided of the characters that differ among adult females of the two species of Cryptes now recognised (C. baccatus and C. utzoni) and a morphologically similar Western Australian species, Austrolichtensia hakearum (Fuller). There is deep genetic divergence in COI among samples of C. baccatus, suggesting the possibility of a species complex in this taxon.

In this study, two new species of soft scale (Hemiptera: Coccomorpha: Coccidae) associated with rosemary, Rosmarinus officinalis L. (Lamiaceae) from Colombia, Cryptinglisia corpoica Kondo Montes sp. nov. and Cryptinglisia ica Montes Kondo sp. nov. are described and illustrated based on the adult female. Two other coccid species, namely Parasaissetia nigra (Nietner) and Saissetia coffeae (Walker), are newly recorded on rosemary. An identification key is presented to all species of soft scale that have been reported on Rosmarinus spp. An updated key to soft scale insects of the genus Cryptinglisia Cockerell is provided also.

Herein we describe a new species, Tillancoccus koreguajae Caballero & Ramos, sp. n. (Hemiptera: Coccidae) from Colombia collected on sugarcane. Pinnaspis strachani (Cooley) is also recorded on sugarcane for the first time worldwide. An updated list of seven species of Coccomorpha on sugarcane in Colombia is provided, including information on its distribution, biology, and mutualistic ants for each species. Seven species of scale insects (Hemiptera: Coccomorpha) have been recorded previously on sugarcane, Saccharum officinarum L. (Poaceae) in Colombia: Pseudococcidae: Dysmicoccus boninsis (Kuwana), D. brevipes (Cockerell), Pseudococcus calceolariae (Maskell), Saccharicoccus sacchari (Cockerell); Coccidae: Pulvinaria elongata Newstead; Diaspididae: Duplachionaspis divergens (Green) and Serenaspis minima (Maskell). However, the record of S. minima in Colombia is considered doubtful as there are no voucher specimens from Colombia and because the distribution of this species is currently limited to the Australasian region. Pseudococcus calceolariae is present in Colombia but its record on sugarcane is also doubtful. A taxonomic key for the identification of scale insects on sugarcane in Colombia is provided.

A new soft scale (Hemiptera: Coccoidea: Coccidae) species, Pulvinariacaballeroramosae Tanaka & Kondo, sp. n., is described from specimens collected on twigs of Ficussoatensis Dugand (Moraceae) in Bogota, Colombia. The new species resembles Pulvinariadrymiswinteri Kondo & Gullan, described from Chile on Drimyswinteri J.R. Forst. & G. Forst. (Winteraceae), but differs in the distribution of preopercular pores on the dorsum, the presence of dorsal tubular ducts, dorsal microducts, and reticulation on the anal plates; and in its feeding habits, i.e., Pulvinariacaballeroramosae feeds on the twigs whereas Pulvinariadrymiswinteri feeds on the leaves of its host. A key to the Colombian species of Pulvinaria Targioni Tozzetti is provided.

The adult female and first-instar nymph of a new species of iceryine scale insect, Crypticerya multicicatrices Kondo & Unruh sp. n., are described and illustrated. The new scale insect is polyphagous and was collected on 13 plant species distributed in seven botanical families, including fruit trees of economic importance such as mango and soursop. A taxonomic key to the species of the tribe Iceryini known from South America is provided. Previous records of C. brasiliensis (Hempel) from Colombia are confirmed to be misidentifications of this new species.

Plotococcus Miller & Denno is synonymized with Leptococcus Reyne (Coccoidea: Pseudococcidae). The genus is redescribed and the adult female of the type species, L. metroxyli Reyne, is redescribed and illustrated. All species hitherto included in Plotococcus are transferred to Leptococcus as L. capixaba (Kondo) comb. nov., L. eugeniae (Miller & Denno) comb. nov., L. hambletoni (Kondo) comb. nov., L. minutus (Hempel) comb. nov., and L. neotropicus (Williams & Granara de Willink) comb. nov. A new species of Leptococcus, L. rodmani Kondo sp. n., from leaves of Guarea guidonia (Meliaceae) from Colombia, is described and illustrated based on the adult female. A revised key to adult females of all species in the genus is provided.