Wikipedia
Malagueta pepper , a kind of Capsicum frutescens, is a type of chili widely used in Brazil, Portugal, and Mozambique but also used throughout the Caribbean, specially its Spanish speaking countries. It is heavily used in the Bahia state of Brazil. It apparently gets its name from the unrelated melegueta pepper from West Africa ( Zingiberaceae).
It is a small, tapered, green pepper that turns red as it matures at about 5 cm (2 in) in length. It has a range of 60,000 to 100,000 Scoville units. Two sizes are seen in markets, which sometimes have different names: the smaller ones are called malaguetinha in Brazil and piri piri in Portugal and Mozambique, and the larger ones are called malagueta in Brazil and Portugal. They are not different varieties, just peppers of different maturities from the same plant.