Andrallus

Bergroth, 1905

Species Guides

Andrallus spinidens

Andrallus is a of predatory stink bugs in the Pentatomidae, established by Bergroth in 1905. The genus contains at least one described , A. spinidens, which has been documented as a of lepidopteran pest larvae in agricultural across Asia. Members of this genus are recognized for their role in of crop pests, particularly in rice and other field crop systems.

187023592 Andrallus spinidens by Licheng Shih. Used under a CC BY 4.0 license.

Andrallus spinidens01 by Merle Shepard, Gerald R.Carner, and P.A.C Ooi, Insects and their Natural Enemies Associated with Vegetables and Soybean in Southeast Asia, Bugwood.org. Used under a CC BY 3.0 us license.

Andrallus spinidens on yellow wall - 2 by KKPCW（Kyu3）. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Andrallus: /ænˈdræləs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Agricultural , particularly crop fields. Documented occurrences include rice-dominated cultivated areas, wheat fields, soybean, maize, pigeonpea, gram, beans, cowpea, cabbage, and okra plantings. Associated with agroecosystems in both the Kumaon region of Uttarakhand, India and northern Iran.

Distribution

Kumaon region of Uttarakhand, India (all six districts surveyed March 2018–February 2019); northern Iran (rice field systems).

Diet

of lepidopteran larvae. Documented prey includes: Mythimna separata (on wheat), Helicoverpa armigera (on wheat, pigeonpea, okra, gram), Spodoptera litura (on soybean, cabbage, beans), Cnaphalocrosis medinalis (on rice), Maruca vitrata (on pigeonpea, beans), Chilo partellus (on maize), Spodoptera mauritia (rice army worm), Galleria mellonella, and Ephestia kuehniella. Can develop and reproduce on both live and frozen prey.

Host Associations

Mythimna separata - preyon wheat
Helicoverpa armigera - preyon wheat, pigeonpea, okra, gram
Spodoptera litura - preyon soybean, cabbage, beans
Cnaphalocrosis medinalis - preyon rice
Maruca vitrata - preyon pigeonpea, beans
Chilo partellus - preyon maize
Spodoptera mauritia - preyrice army worm
Galleria mellonella - preylaboratory prey, live or frozen
Ephestia kuehniella - preylaboratory prey, live or frozen

Life Cycle

Developmental time and body weight vary depending on prey and whether prey is live or frozen. Specific details on , nymphal, and stages not documented in available sources.

Behavior

Exhibits on agricultural pest larvae. Has been observed to develop and reproduce on frozen prey when live prey are scarce, though with reduced hatchability depending on prey .

Ecological Role

of lepidopteran agricultural pests; agent in rice and other crop agroecosystems.

Human Relevance

Recognized as a agent for management of lepidopteran crop pests. Susceptible to fungi including bassiana isolates, which has implications for strategies.

Similar Taxa

other Pentatomidae predatorssimilar predatory habitus in same ; identification to level requires examination of specific morphological characters not detailed in available sources

More Details

Reproductive biology

and longevity are unaffected by prey or prey freezing, but hatchability is mainly reduced when frozen prey is used. This suggests potential for mass rearing using frozen prey when live prey availability is limited.