Category: Pests & Disease

Pillbug, Roly-Poly, Woodlouse Armadillidium vulgare (Latreille) (Malacostraca: Isopoda: Armadillidiidae)

Figure 1. Pillbug, Armadillidium vulgare (Latreille), rolled into a ball.

The roly poly is an isopod, a type of non-insect arthropod also known as a terrestrial crustacean. It is called a roly-poly because it rolls into ball when disturbed. This defensive behavior also makes it look like a… Read More

Plant Diagnostic Clinic and HLB Lab

Figure 2. Southwest Florida Research and Education Center Credit: UF/IFAS

The Plant Pathology program at the UF/IFAS Southwest Research and Education Center is the state and local resource for plant diagnostic services, including HLB (Huanglongbing, or citrus greening) detection, and for insect identification. This brochure covers the center’s… Read More

A Sand Fly Lutzomyia longipalpis (Lutz and Neiva) (Insecta: Diptera: Psychodidae: Phlebotominae)

Figure 1. Adult (A) female and (B) male Lutzomyia longipalpis (Lutz and Neiva), a sand fly. Credit: Cristina Ferro, Instituto Nacional de Salud, Colombia

The true sand flies are densely covered with setae, have long slender legs, and broad and pointed wings that are held erect at rest. Several phlebotomine species are vectors of the protozoan parasites in the genus Leishmania, that… Read More

Vespiform Thrips Franklinothrips vespiformis Crawford (Insecta: Thysanoptera: Aeolothripidae)

Figure 1. Female vespiform thrips showing constricted waist and white band. Credit: Runqian Mao, University of Florida

Franklinothrips vespiformis Crawford is a predatory thrips with a pantropical distribution. The distinctive red, humped-back larvae and fast-moving ant-like adults are predaceous on small arthropods. In addition to being easily mistaken for an ant, this beneficial thrips is… Read More

Black Scale Saissetia oleae (Olivier, 1791) (Insecta: Hemiptera: Coccoidea: Coccidae)

Figure 1. Adult female black scales, Saissetia oleae (Olivier) on cultivated olive (Olea europaea L.). Credit: Lyle Buss, University of Florida

The black scale is an important pest of citrus and olive trees. Originally from South Africa, this scale is now distributed worldwide. In Florida, black scale is found on citrus, cultivated olive, avocado, and many popular landscape plants…. Read More

Black Turpentine Beetle, Dendroctonus terebrans (Olivier) (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Dorsal view of an adult black turpentine beetle, Dendroctonus terebrans (Olivier). Its large size, trapezoidal pronotum, and rounded declivity distinguish it from all other bark beetles infesting pines in the southern United States. Credit: Adam Black and Jiri Hulcr, University of Florida

Black turpentine beetles bore into the inner bark of stressed or injured pines, where they breed and feed on phloem tissue. Adults are strongly attracted to volatile pine odors and readily breed in fresh stumps. In typical forests,… Read More

An ambrosia beetle Xyleborus affinis Eichhoff, 1868 (Insecta: Coleoptera: Curculionidae: Scolytinae)

Figure 1. Adult female Xyleborus affinis. Credit: Jiri Hulcr, UF/IFAS

Xyleborus affinis is one of the most widespread and common ambrosia beetles in the world. It is also very common in Florida. Like other ambrosia beetles, it bores tunnels into the xylem of weakened, cut or injured trees… Read More

Dagger Nematode Xiphinema spp. (Cobb, 1913) Inglis, 1983 (Nematoda: Enoplea: Dorylaimia: Dorylaimina: Xiphinematinae)

Figure 9. Schematic diagram showing detailed morphological features of a dagger nematode, Xiphinema spp.

Dagger nematodes parasitize plants. They cause economic damage and death of host crops through feeding on the roots and by spreading viral mosaic and wilting diseases, but field studies have shown that some control measures targeting reduction in… Read More

Doveweed (Murdannia nudiflora) Control in Warm-Season Turfgrass Species

Doveweed is an aggressive, naturalized summer annual weed that rapidly invades warm-season turfgrass species, especially in residential lawns, and few herbicides can effectively control it. Because of these challenges, a well-designed management strategy is necessary for doveweed control…. Read More

Tawny Crazy Ant

As of 2012, tawny crazy ants have invaded several areas of the southeastern United States, including 24 counties in Florida and parts of southeast Texas. The tawny crazy ant is considered a serious pest. This species infests buildings… Read More